1. General description
The 74AHC574; 74AHCT574 are high-speed Si-gate CMOS devices and are pin
compatible with Low Power Schottky TTL (LSTTL). They are specified in compliance with
JEDEC standard no. 7A.
The 74AHC574; 74AHCT574 are octal D-type flip-flops featuring separate D-type inputs
for each flip-flop and 3-state outputs for bus oriented applications. A clock (CP) and an
output enable (OE) input are common to all flip-flops.
The 8 flip-flops will store the state of their individual D-inputs that meet the set-up and hold
times requirements on the LOW-to-HIGH CP transition.
When OE is LOW the contents of the 8 flip-flops are available at the outputs. When OE is
HIGH, the outputs go to the high-impedance OFF-state. Operation of the OE input does
not affect the state of the flip-flops.
The 74AHC574; 74AHCT574 is functionally identical to the 74AHC564; 74AHCT564, but
has non-inverting outputs. The 74AHC574; 74AHCT574 is functionally identical to
the 74AHC374; 74AHCT374, but has a different pinning.
2. Features
nBalanced propagation delays
nAll inputs have a Schmitt-trigger action
n3-state non-inverting outputs for bus orientated applications
n8-bit positive, edge-triggered register
nIndependent register and 3-state buffer operation
nCommon 3-state output enable input
nFor 74AHC574 only: operates with CMOS input levels
nFor 74AHCT574 only: operates with TTL input levels
nESD protection:
uHBM JESD22-A114E exceeds 2000 V
uMM JESD22-A115-A exceeds 200 V
uCDM JESD22-C101C exceeds 1000 V
nMultiple package options
nSpecified from −40 °C to +85 °C and from −40 °C to +125 °C
74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Rev. 02 — 24 January 2008 Product data sheet
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 2 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
3. Ordering information
4. Functional diagram
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74AHC574D −40 °C to +125 °C SO20 plastic small outline package; 20 leads;
body width 7.5 mm SOT163-1
74AHCT574D
74AHC574PW −40 °C to +125 °C TSSOP20 plastic thin shrink small outline package; 20 leads;
body width 4.4 mm SOT360-1
74AHCT574PW
74AHC574BQ −40 °C to +125 °C DHVQFN20 plastic dual in-line compatible thermal enhanced
very thin quad flat package; no leads; 20 terminals;
body 2.5 ×4.5 ×0.85 mm
SOT764-1
74AHCT574BQ
Fig 1. Functional diagram
mna800
3-STATE
OUTPUTS
FF1
to
FF8
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7 12
13
14
15
16
17
18
19
D0
D1
D2
D3
D4
D5
D6
D7
CP
OE
9
11
1
8
7
6
5
4
3
2
Fig 2. Logic diagram
001aah077
D0
CP
OE
Q0
D
CP
Q
FF1
D1
Q1
D
CP
Q
FF2
D2
Q2
D
CP
Q
FF3
D3
Q3
D
CP
Q
FF4
D4
Q4
D
CP
Q
FF5
D5
Q5
D
CP
Q
FF6
D6
Q6
D
CP
Q
FF7
D7
Q7
D
CP
Q
FF8
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 3 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Fig 3. Logic symbol Fig 4. IEC logic symbol
mna798
D0
D1
D2
D3
D4
D5
D6
D7 OE
CP Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
11
1
12
13
14
15
16
17
18
19
9
8
7
6
5
4
3
2
mna446
12
13
14
15
16
17
18
11 C1
1EN
1D 19
9
8
7
6
5
4
3
2
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 4 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
5. Pinning information
5.1 Pinning
5.2 Pin description
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as a
supply pin or input.
Fig 5. Pin configuration SO20, TSSOP20 Fig 6. Pin configuration DHVQFN20
74AHC574
74AHCT574
OE VCC
D0 Q0
D1 Q1
D2 Q2
D3 Q3
D4 Q4
D5 Q5
D6 Q6
D7 Q7
GND CP
001aah037
1
2
3
4
5
6
7
8
9
10
12
11
14
13
16
15
18
17
20
19
001aah666
74AHC574
74AHCT574
Transparent top view
Q7
D6
D7
Q6
D5 Q5
D4 Q4
D3 Q3
D2 Q2
GND(1)
D1 Q1
D0 Q0
GND
CP
OE
VCC
912
8 13
7 14
6 15
5 16
4 17
3 18
2 19
10
11
1
20
terminal 1
index area
Table 2. Pin description
Symbol Pin Description
OE 1 3-state output enable input (active LOW)
D[0:7] 2, 3, 4, 5, 6, 7, 8, 9 data input
GND 10 ground (0 V)
CP 11 clock input (LOW-to-HIGH, edge triggered)
Q[0:7] 19, 18, 17, 16, 15, 14, 13, 12 3-state flip-flop output
VCC 20 supply voltage
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 5 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
6. Functional description
[1] H = HIGH voltage level;
h = HIGH voltage level one setup time prior to the HIGH-to-LOW CP transition;
L = LOW voltage level;
l = LOW voltage level one setup time prior to the HIGH-to-LOW CP transition;
Z = high-impedance OFF-state;
↑= LOW-to-HIGH clock transition.
7. Limiting values
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] Ptot derates linearly with 8 mW/K above 70 °C.
[3] Ptot derates linearly with 5.5 mW/K above 60 °C.
[4] Ptot derates linearly with 4.5 mW/K above 60 °C.
Table 3. Function table[1]
Operating mode Input Internal
flip-flop Output
OE CP Dn Qn
Load and read register L ↑lL L
L↑hH H
Load register and disable output H ↑lL Z
H↑hH Z
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
VCC supply voltage −0.5 +7.0 V
VIinput voltage −0.5 +7.0 V
IIK input clamping current VI < −0.5 V [1] −20 - mA
IOK output clamping current VO<−0.5 V or VO>V
CC + 0.5 V [1] -±20 mA
IOoutput current VO = −0.5 V to (VCC + 0.5 V) - ±25 mA
ICC supply current - 75 mA
IGND ground current −75 - mA
Tstg storage temperature −65 +150 °C
Ptot total power dissipation Tamb = −40 °C to +125 °C
SO20 package [2] - 500 mW
TSSOP20 package [3] - 500 mW
DHVQFN20 package [4] - 500 mW
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 6 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
8. Recommended operating conditions
9. Static characteristics
Table 5. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 74AHC574 74AHCT574 Unit
Min Typ Max Min Typ Max
VCC supply voltage 2.0 5.0 5.5 4.5 5.0 5.5 V
VIinput voltage 0 - 5.5 0 - 5.5 V
VOoutput voltage 0 - VCC 0-V
CC V
Tamb ambient temperature −40 +25 +125 −40 +25 +125 °C
∆t/∆V input transition rise
and fall rate VCC = 3.3 V ± 0.3 V - - 100 - - - ns/V
VCC = 5.0 V ± 0.5 V - - 20 - - 20 ns/V
Table 6. Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 °C−40 °C to +85 °C−40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
For type 74AHC574
VIH HIGH-level
input voltage VCC = 2.0 V 1.5 - - 1.5 - 1.5 - V
VCC = 3.0 V 2.1 - - 2.1 - 2.1 - V
VCC = 5.5 V 3.85 - - 3.85 - 3.85 - V
VIL LOW-level
input voltage VCC = 2.0 V - - 0.5 - 0.5 - 0.5 V
VCC = 3.0 V - - 0.9 - 0.9 - 0.9 V
VCC = 5.5 V - - 1.65 - 1.65 - 1.65 V
VOH HIGH-level
output voltage VI= VIH or VIL
IO=−50 µA; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V
IO=−50 µA; VCC = 3.0 V 2.9 3.0 - 2.9 - 2.9 - V
IO=−50 µA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V
IO=−4.0 mA; VCC = 3.0 V 2.58 - - 2.48 - 2.40 - V
IO=−8.0 mA; VCC = 4.5 V 3.94 - - 3.8 - 3.70 - V
VOL LOW-level
output voltage VI= VIH or VIL
IO= 50 µA; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V
IO= 50 µA; VCC = 3.0 V - 0 0.1 - 0.1 - 0.1 V
IO= 50 µA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V
IO= 4.0 mA; VCC = 3.0 V - - 0.36 - 0.44 - 0.55 V
IO= 8.0 mA; VCC = 4.5 V - - 0.36 - 0.44 - 0.55 V
IOZ OFF-state
output current VI =V
IH or VIL;
VO=V
CC or GND;
VCC = 5.5 V
--±0.25 - ±2.5 - ±10.0 µA
IIinput leakage
current VI= 5.5 Vor GND;
VCC = 0 V to 5.5 V - - 0.1 - 1.0 - 2.0 µA
ICC supply current VI=V
CC or GND; IO = 0 A;
VCC = 5.5 V - - 4.0 - 40 - 80 µA
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 7 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
CIinput
capacitance - 3.0 10 - 10 - 10 pF
COoutput
capacitance - 4.0 - - - - - pF
For type 74AHCT574
VIH HIGH-level
input voltage VCC = 4.5 V to 5.5 V 2.0 - - 2.0 - 2.0 - V
VIL LOW-level
input voltage VCC = 4.5 V to 5.5 V - - 0.8 - 0.8 - 0.8 V
VOH HIGH-level
output voltage VI= VIH or VIL; VCC = 4.5 V
IO=−50 µA 4.4 4.5 - 4.4 - 4.4 - V
IO=−8.0 mA 3.94 - - 3.8 - 3.70 - V
VOL LOW-level
output voltage VI= VIH or VIL; VCC = 4.5 V
IO= 50 µA - 0 0.1 - 0.1 - 0.1 V
IO= 8.0 mA - - 0.36 - 0.44 - 0.55 V
IOZ OFF-state
output current per input pin; VI =V
IH or VIL;
VCC = 5.5 V; IO= 0 A;
VO=V
CC or GND;
other pins at VCC or GND
--±0.25 - ±2.5 - ±10.0 µA
IIinput leakage
current VI= 5.5 Vor GND;
VCC = 0 V to 5.5 V - - 0.1 - 1.0 - 2.0 µA
ICC supply current VI=V
CC or GND; IO = 0 A;
VCC = 5.5 V - - 4.0 - 40 - 80 µA
∆ICC additional
supply current per input pin;
VI=V
CC −2.1 V; IO= 0 A;
other pins at VCC or GND;
VCC = 4.5 V to 5.5 V
- - 1.35 - 1.5 - 1.5 mA
CIinput
capacitance - 3 10 - 10 - 10 pF
COoutput
capacitance - 4.0 - - - - - pF
Table 6. Static characteristics
…continued
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 °C−40 °C to +85 °C−40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 8 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics
GND = 0 V. For test circuit see Figure 10.
Symbol Parameter Conditions 25 °C−40 °C to +85 °C−40 °C to +125 °C Unit
Min Typ[1] Max Min Max Min Max
For type 74AHC574
tpd propagation
delay CP to Qn; see Figure 7 [2]
VCC = 3.0 V to 3.6 V
CL= 15 pF - 6.5 13.2 1.0 15.5 1.0 16.5 ns
CL= 50 pF - 9.3 16.7 1.0 19.0 1.0 21.0 ns
VCC = 4.5 V to 5.5 V
CL= 15 pF - 4.4 8.6 1.0 10.0 1.0 11.0 ns
CL= 50 pF 6.2 10.6 1.0 12.0 1.0 13.5 ns
ten enable time OE to Qn; see Figure 9 [1]
VCC = 3.0 V to 3.6 V
CL= 15 pF - 5.7 12.8 1.0 15.0 1.0 16.0 ns
CL= 50 pF - 8.2 16.3 1.0 18.5 1.0 20.5 ns
VCC = 4.5 V to 5.5 V
CL= 15 pF - 4.2 9.0 1.0 10.5 1.0 11.5 ns
CL= 50 pF - 5.9 11.0 1.0 12.5 1.0 14.0 ns
tdis disable time OE to Qn; see Figure 9 [2]
VCC = 3.0 V to 3.6 V
CL= 15 pF - 6.3 13.0 1.0 15.0 1.0 16.5 ns
CL= 50 pF - 9.1 15.0 1.0 17.0 1.0 19.0 ns
VCC = 4.5 V to 5.5 V
CL= 15 pF - 4.3 9.0 1.0 10.5 1.0 11.5 ns
CL= 50 pF - 6.9 10.1 1.0 11.5 1.0 13.0 ns
fmax maximum
frequency CP; see Figure 7
VCC = 3.0 V to 3.6 V
CL= 15 pF 80 125 - 65 - 65 - MHz
CL= 50 pF 50 75 - 45 - 45 - MHz
VCC = 4.5 V to 5.5 V
CL= 15 pF 130 180 - 110 - 110 - MHz
CL= 50 pF 85 115 - 75 - 75 - MHz
tWpulse width CP; HIGH or LOW;
see Figure 7
VCC = 3.0 V to 3.6 V;
CL=50pF 5.0 - - 5.0 - 5.0 - ns
VCC = 4.5 V to 5.5 V;
CL=50pF 5.0 - - 5.0 - 5.0 - ns
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 9 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
tsu set-up time Dn to CP; see Figure 8
VCC = 3.0 V to 3.6 V;
CL=50pF 3.5 - - 3.5 - 3.5 - ns
VCC = 4.5 V to 5.5 V;
CL=50pF 3.0 - - 3.0 - 3.0 - ns
thhold time Dn to CP; see Figure 8
VCC = 3.0 V to 3.6 V;
CL=50pF 1.5 - - 1.5 - 1.5 - ns
VCC = 4.5 V to 5.5 V;
CL=50pF 1.5 - - 1.5 - 1.5 - ns
CPD power
dissipation
capacitance
CL= 50 pF; fi = 1 MHz;
VI= GND to VCC
[3] -10- - - - -pF
For type 74AHCT574
tpd propagation
delay CP to Qn; see Figure 7 [2]
VCC = 4.5 V to 5.5 V
CL= 15 pF - 4.4 8.6 1.0 10.0 1.0 11.0 ns
CL= 50 pF - 6.3 10.6 1.0 12.0 1.0 13.5 ns
ten enable time OE to Qn; see Figure 9
VCC = 4.5 V to 5.5 V
CL= 15 pF - 4.3 9.0 1.0 10.5 1.0 11.5 ns
CL= 50 pF - 6.1 11.0 1.0 12.5 1.0 14.0 ns
tdis disable time OE to Qn; see Figure 9 [2]
VCC = 4.5 V to 5.5 V
CL= 15 pF - 4.3 9.0 1.0 10.5 1.0 11.5 ns
CL= 50 pF - 6.2 10.1 1.0 11.5 1.0 13.0 ns
fmax maximum
frequency CP; see Figure 7
VCC = 4.5 V to 5.5 V
CL= 15 pF 130 180 - 110 - 110 - MHz
CL= 50 pF 85 115 - 75 - 75 - MHz
tWpulse width CP; HIGH or LOW;
see Figure 7
VCC = 4.5 V to 5.5 V;
CL=50pF 5.0 - - 5.5 - 5.5 - ns
tsu set-up time Dn to CP; see Figure 8
VCC = 4.5 V to 5.5 V;
CL=50pF 3.0 - - 3.5 - 3.5 - ns
Table 7. Dynamic characteristics
…continued
GND = 0 V. For test circuit see Figure 10.
Symbol Parameter Conditions 25 °C−40 °C to +85 °C−40 °C to +125 °C Unit
Min Typ[1] Max Min Max Min Max
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 10 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
[1] Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).
[2] tpd is the same as tPLH and tPHL.
ten is the same as tPZL and tPZH.
tdis is the same as tPLZ and tPHZ.
[3] CPD is used to determine the dynamic power dissipation PD(µW).
PD=C
PD ×VCC2×fi+∑(CL×VCC2×fo) where:
fi= input frequency in MHz;
fo= output frequency in MHz;
CL= output load capacitance in pF;
VCC = supply voltage in V.
10.1 Waveforms
thhold time Dn to CP; see Figure 8
VCC = 4.5 V to 5.5 V;
CL=50pF 1.5 - - 1.5 - 1.5 - ns
CPD power
dissipation
capacitance
per buffer;
CL=50pF;f=1 MHz;
VI= GND to VCC
[3] -12- - - - -pF
Table 7. Dynamic characteristics
…continued
GND = 0 V. For test circuit see Figure 10.
Symbol Parameter Conditions 25 °C−40 °C to +85 °C−40 °C to +125 °C Unit
Min Typ[1] Max Min Max Min Max
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 7. Propagation delay input (CP) to output (Qn), clock input (CP) pulse width and the maximum frequency
(CP)
mna802
CP input
Qn output
tPHL tPLH
tW
1/fmax
VM
VOH
VI
GND
VOL
VM
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 11 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
The shaded areas indicate when the input is permitted to change for predicable output performance.
Fig 8. The data input (D) to clock input (CP) set-up times and clock input (CP) to data input (D) hold times
mna803
GND
GND
th
tsu th
tsu
VM
VM
VM
VI
VOH
VOL
VI
Qn output
CP input
Dn input
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 9. Enable and disable times
001aah078
tPLZ
tPHZ
outputs
disabled outputs
enabled
VY
VX
outputs
enabled
Qn output
LOW-to-OFF
OFF-to-LOW
Qn output
HIGH-to-OFF
OFF-to-HIGH
OE input
VI
VOL
VOH
VCC
VM
GND
GND
tPZL
tPZH
VM
VM
Table 8. Measurement points
Type Input Output
VMVMVXVY
74AHC574 0.5VCC 0.5VCC VOL + 0.3 V VOH − 0.3 V
74AHCT574 1.5 V 0.5VCC VOL + 0.3 V VOH − 0.3 V
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 12 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch.
Fig 10. Load circuitry for switching times
VMVM
tW
tW
10 %
90 %
0 V
VI
VI
negative
pulse
positive
pulse
0 V
VMVM
90 %
10 %
tf
tr
tr
tf
001aad983
DUT
VCC VCC
VIVO
RT
RLS1
CL
open
PULSE
GENERATOR
Table 9. Test data
Type Input Load S1 position
VItr, tfCLRLtPHL, tPLH tPZH, tPHZ tPZL, tPLZ
74AHC574 VCC 3.0 ns 15 pF, 50 pF 1 kΩopen GND VCC
74AHCT574 3.0 V 3.0 ns 15 pF, 50 pF 1 kΩopen GND VCC
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 13 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
11. Package outline
Fig 11. Package outline SOT163-1 (SO20)
UNIT A
max. A1A2A3bpcD
(1) E(1) (1)
eH
ELL
pQZ
ywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm
inches
2.65 0.3
0.1 2.45
2.25 0.49
0.36 0.32
0.23 13.0
12.6 7.6
7.4 1.27 10.65
10.00 1.1
1.0 0.9
0.4 8
0
o
o
0.25 0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
1.1
0.4
SOT163-1
10
20
wM
bp
detail X
Z
e
11
1
D
y
0.25
075E04 MS-013
pin 1 index
0.1 0.012
0.004 0.096
0.089 0.019
0.014 0.013
0.009 0.51
0.49 0.30
0.29 0.05
1.4
0.055
0.419
0.394 0.043
0.039 0.035
0.016
0.01
0.25
0.01 0.004
0.043
0.016
0.01
0 5 10 mm
scale
X
θ
A
A1
A2
HE
Lp
Q
E
c
L
vMA
(A )
3
A
SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
99-12-27
03-02-19
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 14 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Fig 12. Package outline SOT360-1 (TSSOP20)
UNIT A1A2A3bpcD
(1) E(2) (1)
eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 0.15
0.05 0.95
0.80 0.30
0.19 0.2
0.1 6.6
6.4 4.5
4.3 0.65 6.6
6.2 0.4
0.3 0.5
0.2 8
0
o
o
0.13 0.10.21
DIMENSIONS (mm are the original dimensions)
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
0.75
0.50
SOT360-1 MO-153 99-12-27
03-02-19
wM
bp
D
Z
e
0.25
110
20 11
pin 1 index
θ
A
A1
A2
Lp
Q
detail X
L
(A )
3
HE
E
c
vMA
X
A
y
0 2.5 5 mm
scale
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1
A
max.
1.1
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 15 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
Fig 13. Package outline SOT764-1 (DHVQFN20)
terminal 1
index area
0.51
A1Eh
b
UNIT ye
0.2
c
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 4.6
4.4
Dh
3.15
2.85
y1
2.6
2.4 1.15
0.85
e1
3.5
0.30
0.18
0.05
0.00 0.05 0.1
DIMENSIONS (mm are the original dimensions)
SOT764-1 MO-241 - - -- - -
0.5
0.3
L
0.1
v
0.05
w
0 2.5 5 mm
scale
SOT764-1
DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
20 terminals; body 2.5 x 4.5 x 0.85 mm
A(1)
max.
AA1c
detail X
y
y1C
e
L
Eh
Dh
e
e1
b
29
19 12
11
10
1
20
X
D
E
C
BA
terminal 1
index area
AC
CB
vM
wM
E(1)
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
D(1)
02-10-17
03-01-27
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 16 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
12. Abbreviations
13. Revision history
Table 10. Abbreviations
Acronym Description
CDM Charged-Device Model
CMOS Complementary Metal Oxide Semiconductor
DUT Device Under Test
ESD ElectroStatic Discharge
HBM Human Body Model
MM Machine Model
TTL Transistor-Transistor Logic
Table 11. Revision history
Document ID Release date Data sheet status Change notice Supersedes
74AHC_AHCT574_2 20080124 Product data sheet - 74AHC_AHCT574_1
Modifications: •The format of this data sheet has been redesigned to comply with the new identity guidelines of
NXP Semiconductors.
•Legal texts have been adapted to the new company name where appropriate.
•Section 3: DHVQFN20 package added.
•Section 7: derating values added for DHVQFN20 package.
•Section 11: outline drawing added for DHVQFN20 package.
74AHC_AHCT574_1 19990616 Product specification - -
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT574_2
Product data sheet Rev. 02 — 24 January 2008 17 of 18
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
14. Legal information
14.1 Data sheet status
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nexperia.com.
14.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
14.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable.However,Nexperiadoesnotgiveanyrepresentationsor
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
Right to make changes — Nexperiareservestherighttomake
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — Nexperia products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of a Nexperia product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. Nexperia accepts no liability for inclusion and/or use of
Nexperia products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — Nexperia products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.nexperia.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by Nexperia. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
14.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
15. Contact information
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Document status[1][2] Product status[3] Definition
Objective [short] data sheet Development This document contains data from the objective specification for product development.
Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.
Product [short] data sheet Production This document contains the product specification.
© Nexperia B.V. 2017. All rights reserved
Nexperia 74AHC574; 74AHCT574
Octal D-type flip-flop; positive edge-trigger; 3-state
16. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 2
4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5 Pinning information. . . . . . . . . . . . . . . . . . . . . . 4
5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
6 Functional description . . . . . . . . . . . . . . . . . . . 5
7 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
8 Recommended operating conditions. . . . . . . . 6
9 Static characteristics. . . . . . . . . . . . . . . . . . . . . 6
10 Dynamic characteristics . . . . . . . . . . . . . . . . . . 8
10.1 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
11 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 13
12 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 16
13 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 16
14 Legal information. . . . . . . . . . . . . . . . . . . . . . . 17
14.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 17
14.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
14.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
14.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
15 Contact information. . . . . . . . . . . . . . . . . . . . . 17
16 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
© Nexperia B.V. 2017. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release:
24 January 2008
