1. General description
The 74AHC245; 74AHCT245 is a high-speed Si-gate CMOS device.
The 74AHC245; 74AHCT245 is an octal transceiver featuring non-inverting 3-state bus
compatible outputs in both send and receive directions.
The 74AHC245; 74AHCT245 features an output enable input (OE), for easy cascading,
and a send and receive direction control input (DIR).
OE controls the outputs so that the buses are effectively isolated.
2. Features
nBalanced propagation delays
nAll inputs have Schmitt-trigger actions
nInputs accept voltages higher than VCC
nInput levels:
uFor 74AHC245: CMOS level
uFor 74AHCT245: TTL level
nESD protection:
uHBM EIA/JESD22-A114E exceeds 2000 V
uMM EIA/JESD22-A115-A exceeds 200 V
uCDM EIA/JESD22-C101C exceeds 1000 V
nMultiple package options
nSpecified from −40 °C to +85 °C and from −40 °C to +125 °C
3. Ordering information
74AHC245; 74AHCT245
Octal bus transceiver; 3-state
Rev. 05 — 28 April 2009 Product data sheet
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74AHC245D −40 °C to +125 °C SO20 plastic small outline package; 20 leads;
body width 7.5 mm SOT163-1
74AHCT245D
74AHC245PW −40 °C to +125 °C TSSOP20 plastic thin shrink small outline package; 20 leads;
body width 4.4 mm SOT360-1
74AHCT245PW
74AHC245BQ −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
74AHCT245BQ
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 2 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
4. Functional diagram
Fig 1. Logic symbol Fig 2. IEC logic symbol
2
1DIR
18
19
B0
B1
B2
B3
B4
B5
B6
B7
3
17
4
16
5
15
6
14
7
13
8
12
9
A0
A1
A2
A3
A4
A5
A6
A7
11
OE
mna174
173
1
19
2
1
16
4
15
5
14
6
13
7
12
8
119
18
G3
3EN1
3EN2
2
mna175
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 3 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 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 3. Pin configuration SO20, TSSOP20 Fig 4. Pin configuration DHVQFN20
74AHC245
74AHCT245
DIR VCC
A0 OE
A1 B0
A2 B1
A3 B2
A4 B3
A5 B4
A6 B5
A7 B6
GND B7
001aak037
1
2
3
4
5
6
7
8
9
10
12
11
14
13
16
15
18
17
20
19
001aak038
74AHC245
74AHCT245
Transparent top view
B6
A6
A7
B5
A5 B4
A4 B3
A3 B2
A2 B1
A1 B0
A0 OE
GND
B7
DIR
VCC
912
8 13
7 14
6 15
5 16
4 17
3 18
2 19
10
11
1
20
terminal 1
index area
GND(1)
Table 2. Pin description
Symbol Pin Description
DIR 1 direction control input
A0 2 data input/output
A1 3 data input/output
A2 4 data input/output
A3 5 data input/output
A4 6 data input/output
A5 7 data input/output
A6 8 data input/output
A7 9 data input/output
GND 10 ground (0 V)
B7 11 data input/output
B6 12 data input/output
B5 13 data input/output
B4 14 data input/output
B3 15 data input/output
B2 16 data input/output
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 4 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
6. Functional description
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
7. Limiting values
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO20 packages: above 70 °C the value of Ptot derates linearly at 8 mW/K.
For TSSOP20 packages: above 60 °C the value of Ptot derates linearly at 5.5 mW/K.
For DHVQFN20 packages: above 60 °C the value of Ptot derates linearly at 4.5 mW/K.
B1 17 data input/output
B0 18 data input/output
OE 19 output enable input (active LOW)
VCC 20 supply voltage
Table 2. Pin description
…continued
Symbol Pin Description
Table 3. Function table[1]
Control Input/output
OE DIR An Bn
L L A = B inputs
L H inputs B = A
HXZ 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 +20 mA
IOoutput current VO = −0.5 V to (VCC + 0.5 V) −25 +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[2] - 500 mW
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 5 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
8. Recommended operating conditions
9. Static characteristics
Table 5. Operating conditions
Symbol Parameter Conditions Min Typ Max Unit
74AHC245
VCC supply voltage 2.0 5.0 5.5 V
VIinput voltage 0 - 5.5 V
VOoutput voltage 0 - VCC V
Tamb ambient temperature −40 +25 +125 °C
∆t/∆V input transition rise and fall rate VCC = 3.0 V to 3.6 V - - 100 ns/V
VCC = 4.5 V to 5.5 V - - 20 ns/V
74AHCT245
VCC supply voltage 4.5 5.0 5.5 V
VIinput voltage 0 - 5.5 V
VOoutput voltage 0 - VCC V
Tamb ambient temperature −40 +25 +125 °C
∆t/∆V input transition rise and fall rate VCC = 4.5 V to 5.5 V - - 20 ns/V
Table 6. Static characteristics
At recommended operating conditions; 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
74AHC245
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 - - 3.80 - 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
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 6 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
IIinput leakage
current VI= 5.5 Vor GND;
VCC = 0 V to 5.5 V - - 0.1 - 1.0 - 2.0 µA
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
ICC supply current VI=V
CC or GND; IO = 0 A;
VCC = 5.5 V - - 4.0 - 40 - 80 µA
CIinput
capacitance VI=V
CC or GND - 3 10 - 10 - 10 pF
COoutput
capacitance -4- - - - -pF
74AHCT245
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 - - 3.80 - 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
IIinput leakage
current VI= 5.5 Vor GND;
VCC = 0 V to 5.5 V - - 0.1 - 1.0 - 2.0 µA
IOZ OFF-state
output current VI=V
IH or VIL;
VO=V
CC or GND per input
pin; other inputs at
VCC or GND; IO= 0 A;
VCC = 5.5 V
--±0.25 - ±2.5 - ±10.0 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;
other pins at VCC or GND;
IO= 0 A; VCC = 4.5 V to 5.5 V
- - 1.35 - 1.5 - 1.5 mA
CIinput
capacitance VI=V
CC or GND - 3 10 - 10 - 10 pF
COoutput
capacitance -4- - - - -pF
Table 6. Static characteristics
…continued
At recommended operating conditions; 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_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 7 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol Parameter Conditions 25 °C−40 °C to +85 °C−40 °C to +125 °C Unit
Min Typ[1] Max Min Max Min Max
74AHC245
tpd propagation
delay An to Bn; Bn to An;
see Figure 5 [2]
VCC = 3.0 V to 3.6 V
CL= 15 pF - 5.0 8.4 1.0 10.0 1.0 10.5 ns
CL= 50 pF - 6.5 11.9 1.0 13.5 1.0 15.0 ns
VCC = 4.5 V to 5.5 V
CL= 15 pF - 3.5 5.5 1.0 6.5 1.0 7.0 ns
CL= 50 pF 5.0 7.5 1.0 8.5 1.0 9.5 ns
ten enable time OE to An; OE to Bn;
signal name DIR;
see Figure 6
[3]
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 - 9.0 16.7 1.0 19.0 1.0 21.0 ns
VCC = 4.5 V to 5.5 V
CL= 15 pF - 4.0 8.5 1.0 10.0 1.0 11.0 ns
CL= 50 pF - 5.0 10.6 1.0 12.0 1.0 13.5 ns
tdis disable time OE to An; OE to Bn;
signal name DIR;
see Figure 6
[4]
VCC = 3.0 V to 3.6 V
CL= 15 pF - 7.5 12.5 1.0 15.5 1.0 16.0 ns
CL= 50 pF - 10.0 15.8 1.0 18.0 1.0 20.0 ns
VCC = 4.5 V to 5.5 V
CL= 15 pF - 4.5 7.8 1.0 9.2 1.0 10.0 ns
CL= 50 pF - 6.0 9.7 1.0 11.0 1.0 12.5 ns
CPD power
dissipation
capacitance
fi = 1 MHz;
VI= GND to VCC
[5] -12- - - - -pF
74AHCT245; VCC = 4.5 V to 5.5 V
tpd propagation
delay An to Bn; Bn to An;
see Figure 5 [2]
CL= 15 pF - 3.5 7.7 1.0 8.5 1.0 10.0 ns
CL= 50 pF - 4.5 8.7 1.0 9.5 1.0 11.0 ns
ten enable time OE to An; OE to Bn;
signal name DIR;
see Figure 6
[3]
CL= 15 pF - 5.0 13.8 1.0 15.0 1.0 17.5 ns
CL= 50 pF - 6.0 14.8 1.0 16.0 1.0 18.5 ns
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 8 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 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.
[3] ten is the same as tPZL and tPZH.
[4] tdis is the same as tPLZ and tPHZ.
[5] CPD is used to determine the dynamic power dissipation (PD in µW).
PD=C
PD ×VCC2×fi×N+Σ(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;
N = number of inputs switching;
Σ(CL×VCC2×fo) = sum of the outputs.
10.1 Waveforms
tdis disable time OE to An; OE to Bn;
signal name DIR;
see Figure 6
[4]
CL= 15 pF - 5.0 14.4 1.0 15.5 1.0 18.0 ns
CL= 50 pF - 6.0 15.4 1.0 16.5 1.0 19.5 ns
CPD power
dissipation
capacitance
fi = 1 MHz;
VI= GND to VCC
[5] -15- - - - -pF
Table 7. Dynamic characteristics
…continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
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 5. Input to output propagation delays
mna176
An, Bn input
Bn, An output
tPLH tPHL
GND
VI
VM
VM
VM
VM
VOH
VOL
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 9 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 6. Enable and disable times
mna367
tPLZ
tPHZ
outputs
disabled outputs
enabled
VY
VX
outputs
enabled
output
LOW-to-OFF
OFF-to-LOW
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
74AHC245 0.5 ×VCC 0.5 ×VCC VOL + 0.3 V VOH − 0.3 V
74AHCT245 1.5 V 0.5 ×VCC VOL + 0.3 V VOH − 0.3 V
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 10 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 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 7. Load circuitry for measuring 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
G
Table 9. Test data
Type Input Load S1 position
VItr, tfCLRLtPHL, tPLH tPZH, tPHZ tPZL, tPLZ
74AHC245 VCC ≤3.0 ns 15 pF, 50 pF 1 kΩopen GND VCC
74AHCT245 3.0 V ≤3.0 ns 15 pF, 50 pF 1 kΩopen GND VCC
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 11 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
11. Package outline
Fig 8. 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_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 12 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
Fig 9. 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_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 13 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
Fig 10. 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_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 14 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 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_AHCT245_5 20090428 Product data sheet - 74AHC_AHCT245_4
Modifications: •Section 3: DHVQFN20 package added.
•Section 7: derating values added for DHVQFN20 package.
•Section 11: outline drawing added for DHVQFN20 package.
74AHC_AHCT245_4 20080425 Product data sheet - 74AHC_AHCT245_N_3
74AHC_AHCT245_N_3 20070925 Product data sheet - 74AHC_AHCT245_2
74AHC_AHCT245_2 19990928 Product specification - 74AHC_AHCT245_1
74AHC_AHCT245_1 19980921 Product specification - -
© Nexperia B.V. 2017. All rights reserved
74AHC_AHCT245_5
Product data sheet Rev. 05 — 28 April 2009 15 of 16
Nexperia 74AHC245; 74AHCT245
Octal bus transceiver; 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.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from national authorities.
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 74AHC245; 74AHCT245
Octal bus transceiver; 3-state
16. Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . 1
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 1
4 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5 Pinning information. . . . . . . . . . . . . . . . . . . . . . 3
5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
6 Functional description . . . . . . . . . . . . . . . . . . . 4
7 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4
8 Recommended operating conditions. . . . . . . . 5
9 Static characteristics. . . . . . . . . . . . . . . . . . . . . 5
10 Dynamic characteristics . . . . . . . . . . . . . . . . . . 7
10.1 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
11 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 11
12 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 14
13 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 14
14 Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
14.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
14.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
14.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
14.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15 Contact information. . . . . . . . . . . . . . . . . . . . . 15
16 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
© 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:
28 April 2009
