1. General description
The 74HC595; 74HCT 595 are hig h- speed Si-g ate CMOS d evices and ar e pin co mpatible
with Low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC
standard No. 7A.
The 74HC595; 74HCT595 are 8-stage serial shift registers with a storage register and
3-state outputs. The registers have separate clocks.
Data is shifted on the positive-going transitions of the shift register clock input (SHCP).
The data in each register is transferred to the storage register on a positive-going
transition of the storage register clo ck input (STCP). If both clocks are connected together,
the shift register will always be one clock pulse ahead of the storage register.
The shift register has a serial input (DS) and a serial standard output (Q7S) for cascading.
It is also provided with asynchronous reset (active LOW) for all 8 shift register stages. Th e
storage register has 8 parallel 3-state bus driver outputs. Data in the storage register
appears at the output whenever the output enable input (OE) is LOW.
2. Features and benefits
8-bit serial input
8-bit serial or parallel output
Storage register with 3-state outputs
Shift register with direct clear
100 MHz (typical) shift out frequency
ESD protection:
HBM J ESD22-A114F exceeds 2000 V
MM JESD22-A115-A exce ed s 200 V
Multiple package options
Specified from 40 C to +85 C and from 40 C to +125 C
3. Applications
Serial-to-parallel data conversion
Remote control holding register
74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output
latches; 3-state
Rev. 7 — 26 January 2015 Product data sheet
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 2 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
4. Ordering information
5. Functional diagram
Table 1. Ordering information
Type number Package
Temperature ra nge Name Description Version
74HC595N 40 C to +125 C DIP16 plastic dual in-line package; 16 leads (300 mil) SOT38-4
74HCT595N
74HC595D 40 C to +125 C SO16 plastic small outline package; 16 leads;
body width 3.9 mm SOT109-1
74HCT595D
74HC595DB 40 C to +125 C SSOP16 plastic shrink small outline package; 16 leads;
body width 5.3 mm SOT338-1
74HCT595DB
74HC595PW 40 C to +125 C TSSOP16 plastic thin shrink small outline package; 16 leads;
body width 4.4 mm SOT403-1
74HCT595PW
74HC595BQ 40 C to +125 C DHVQFN16 plastic dual in-line compatible thermal enhanced
very thin quad flat package; no leads; 16 terminals;
body 2.5 3.5 0.85 mm
SOT763-1
74HCT595BQ
Fig 1. Functional di agram
PQD
67$7(2873876
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74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 3 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
Fig 2. Logic symbol Fig 3. IEC logic symbol
2(05
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74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 4 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
6. Pinning information
6.1 Pinning
Fig 5. Pin configuration DIP16, SO16 Fig 6. Pin configuration SSOP16, TSSOP16
+&
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(1) This is not a supply pin. The substrate is attached to this pad using conductive die attach material. There is no electrical or
mechanical requirement to solder this pad. However, if it is soldered, the solder land should remain floating or be connected to
GND.
Fig 7. Pin configuration for DHVQFN16
+&7
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74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 5 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
6.2 Pin description
7. Functional description
[1] H = HIGH voltage state;
L = LOW voltage state;
= LOW-to-HIGH transition;
X = don’t care;
NC = no change;
Z = high-impedance OFF-state.
Table 2. Pin description
Symbol Pin Description
Q1 1 parallel data output 1
Q2 2 parallel data output 2
Q3 3 parallel data output 3
Q4 4 parallel data output 4
Q5 5 parallel data output 5
Q6 6 parallel data output 6
Q7 7 parallel data output 7
GND 8 ground (0 V)
Q7S 9 serial data output
MR 10 master reset (active LOW)
SHCP 11 shift register clock input
STCP 12 storage register clock input
OE 13 output enable input (active LOW)
DS 14 serial data input
Q0 15 parallel data output 0
VCC 16 supply voltage
Table 3. Function table[1]
Control Input Output Function
SHCP STCP OE MR DS Q7S Qn
X X L L X L NC a LOW-level on MR only affects the shift registers
XL L X L L empty shift register loaded into storage register
X X H L X L Z shift register clear; parallel outputs in high-impedance OFF-state
X L H H Q6S NC logic HIGH-level shifted into shift register stage 0. Contents of all
shift register stages shifted through, e.g. previous state of stage 6
(internal Q6S) appears on the serial output (Q7S).
XL H X NC QnS contents of shift register stages (internal QnS) are transferred to
the storage register and parallel output stages
L H X Q6S QnS contents of shift regist er sh ifted through ; pre vi o us contents of the
shift register is transferred to the storage register and the parallel
output stages
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 6 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
8. Limiting values
[1] For DIP16 package: Ptot derates linearly with 12 mW/K above 70 C.
[2] For SO16 package: Ptot derates linearly with 8 mW/K above 70 C.
[3] For SSOP16 and TSSOP16 packages: Ptot derates linearly with 5.5 mW/K above 60 C.
[4] For DHVQFN16 package: Ptot derates linearly with 4.5 mW/K above 60 C.
Fig 8. Timing diagram
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67&3
05
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4
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=VWDWH
=VWDWH
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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 V
IIK input clamping current VI < 0.5 V or VI>V
CC + 0.5 V - 20 mA
IOK output clamping current VO<0.5 V or VO > VCC + 0.5 V - 20 mA
IOoutput current VO=0.5 V to (VCC +0.5V)
pin Q7S - 25 mA
pins Qn - 35 mA
ICC supply current - 70 mA
IGND ground current 70 - mA
Tstg storage temperature 65 +150 C
Ptot total power dissipation DIP16 package [1] - 750 mW
SO16 package [2] - 500 mW
SSOP16 package [3] - 500 mW
TSSOP16 package [3] - 500 mW
DHVQFN16 package [4] - 500 mW
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 7 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
9. Recommended operating conditions
10. Static characteristics
Table 5. Recommended operating con ditions
Symbol Parameter Conditions 74HC595 74HCT595 Unit
Min Typ Max Min Typ Max
VCC supply voltage 2.0 5.0 6.0 4.5 5.0 5.5 V
VIinput voltage 0 - VCC 0-V
CC V
VOoutput voltage 0 - VCC 0-V
CC V
t/V input transition rise and
fall rate VCC = 2.0 V - - 625 - - - ns/V
VCC = 4.5 V - 1.67 139 - 1.67 139 ns/V
VCC =6.0V - - 83 - - - ns/V
Tamb ambient temperature 40 +25 +125 40 +25 +125 C
Table 6. Static ch aracteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 40 C to +85 C40 C to +125 CUnit
Min Typ Max Min Max
74HC595
VIH HIGH-level
input voltage VCC = 2.0 V 1.5 1.2 - 1.5 - V
VCC = 4.5 V 3.15 2.4 - 3.15 - V
VCC = 6.0 V 4.2 3.2 - 4.2 - V
VIL LOW-level
input voltage VCC = 2.0 V - 0.8 0.5 - 0.5 V
VCC = 4.5 V - 2.1 1.35 - 1.35 V
VCC = 6.0 V - 2.8 1.8 - 1.8 V
VOH HIGH-level
output voltage VI=V
IH or VIL
all outputs
IO=20 A; VCC = 2.0 V 1.9 2.0 - 1.9 - V
IO=20 A; VCC = 4.5 V 4.4 4.5 - 4.4 - V
IO=20 A; VCC = 6.0 V 5.9 6.0 - 5.9 - V
Q7S output
IO=4mA; V
CC = 4.5 V 3.84 4.32 - 3.7 - V
IO=5.2 mA; VCC = 6.0 V 5.34 5.81 - 5.2 - V
Qn bus driver outputs
IO=6mA; V
CC = 4.5 V 3.84 4.32 - 3.7 - V
IO=7.8 mA; VCC = 6.0 V 5.34 5.81 - 5.2 - V
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 8 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
VOL LOW-level
output voltage VI=V
IH or VIL
all outputs
IO=20A; VCC = 2.0 V - 0 0.1 - 0.1 V
IO=20A; VCC = 4.5 V - 0 0.1 - 0.1 V
IO=20A; VCC = 6.0 V - 0 0.1 - 0.1 V
Q7S output
IO=4mA; V
CC = 4.5 V - 0.15 0.33 - 0.4 V
IO=5.2mA; V
CC = 6.0 V - 0.16 0.33 - 0.4 V
Qn bus driver outputs
IO=6mA; V
CC = 4.5 V - 0.15 0.33 - 0.4 V
IO=7.8mA; V
CC = 6.0 V - 0.16 0.33 - 0.4 V
IIinput leakage
current VI=V
CC or GND; VCC =6.0V - - 1.0 - 1.0 A
IOZ OFF-state
output current VI=V
IH or VIL; VCC =6.0V;
VO=V
CC or GND --5.0 - 10 A
ICC supply current VI=V
CC or GND; IO=0A;
VCC =6.0V - - 80 - 160 A
CIinput
capacitance -3.5- - -pF
74HCT595
VIH HIGH-level
input voltage VCC = 4.5 V to 5.5 V 2.0 1.6 - 2.0 - V
VIL LOW-level
input voltage VCC = 4.5 V to 5.5 V - 1.2 0.8 - 0.8 V
VOH HIGH-level
output voltage VI=V
IH or VIL; VCC =4.5V
all outputs
IO=20 A 4.4 4.5 - 4.4 - V
Q7S output
IO=4 mA 3.84 4.32 - 3.7 - V
Qn bus driver outputs
IO=6 mA 3.7 4.32 - 3.7 - V
VOL LOW-level
output voltage VI=V
IH or VIL; VCC =4.5V
all outputs
IO=20A - 0 0.1 - 0.1 V
Q7S output
IO= 4.0 mA - 0.15 0.33 - 0.4 V
Qn bus driver outputs
IO= 6.0 mA - 0.16 0.33 - 0.4 V
IIinput leakage
current VI=V
CC or GND; VCC =5.5V - - 1.0 - 1.0 A
Table 6. Static ch aracteristics …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 40 C to +85 C40 C to +125 CUnit
Min Typ Max Min Max
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 9 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
11. Dynamic characteristics
IOZ OFF-state
output current VI=V
IH or VIL; VCC =5.5 V;
VO=V
CC or GND --5.0 - 10 A
ICC supply current VI=V
CC or GND; IO=0A;
VCC =5.5V - - 80 - 160 A
ICC additional
supply current per input pin; IO=0A; V
I=V
CC
2.1 V; other inputs at
VCC or GND; VCC = 4.5 V to 5.5 V
pins MR, SHCP, STCP, OE - 150 675 - 735 A
pin DS - 25 113 - 123 A
CIinput
capacitance -3.5- - -pF
Table 6. Static ch aracteristics …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 40 C to +85 C40 C to +125 CUnit
Min Typ Max Min Max
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 14.
Symbol Parameter Conditions 25 C40 C to +85 C40 C to +125 CUnit
Min Typ[1] Max Min Max Min Max
74HC595
tpd propagation
delay SHCP to Q7S; see Figure 9 [2]
VCC = 2 V - 52 160 - 200 - 240 ns
VCC = 4.5 V - 19 32 - 40 - 48 ns
VCC = 6 V - 15 27 - 34 - 41 ns
STCP to Qn; see Figure 10 [2]
VCC = 2 V - 55 175 - 220 - 265 ns
VCC = 4.5 V - 20 35 - 44 - 53 ns
VCC = 6 V - 16 30 - 37 - 45 ns
MR to Q7S; see Figure 12 [3]
VCC = 2 V - 47 175 - 220 - 265 ns
VCC = 4.5 V - 17 35 - 44 - 53 ns
VCC = 6 V - 14 30 - 37 - 45 ns
ten enable time OE to Qn; see Figure 13 [4]
VCC = 2 V - 47 150 - 190 - 225 ns
VCC = 4.5 V - 17 30 - 38 - 45 ns
VCC = 6 V - 14 26 - 33 - 38 ns
tdis disable time OE to Qn; see Figure 13 [5]
VCC = 2 V - 41 150 - 190 - 225 ns
VCC = 4.5 V - 15 30 - 38 - 45 ns
VCC = 6 V - 12 27 - 33 - 38 ns
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 10 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
tWpulse width SHCP HIGH or LOW;
see Figure 9
VCC = 2 V 75 17 - 95 - 110 - ns
VCC = 4.5 V 15 6 - 19 - 22 - ns
VCC = 6 V 13 5 - 16 - 19 - ns
STCP HIGH or LOW;
see Figure 10
VCC = 2 V 75 11 - 95 - 110 - ns
VCC = 4.5 V 15 4 - 19 - 22 - ns
VCC = 6 V 13 3 - 16 - 19 - ns
MR LOW; see Figure 12
VCC = 2 V 75 17 - 95 - 110 - ns
VCC = 4.5 V 15 6 - 19 - 22 - ns
VCC = 6 V 13 5 - 16 - 19 - ns
tsu set-up time DS to SHCP; see Figure 10
VCC = 2 V 50 11 - 65 - 75 - ns
VCC = 4.5 V 10 4 - 13 - 15 - ns
VCC = 6 V 9 3 - 11 - 13 - ns
SHCP to STCP;
see Figure 11
VCC = 2 V 75 22 - 95 - 110 - ns
VCC = 4.5 V 15 8 - 19 - 22 - ns
VCC = 6 V 13 7 - 16 - 19 - ns
thhold time DS to SHCP; see Figure 11
VCC = 2 V 3 6- 3 - 3 - ns
VCC = 4.5 V 3 2- 3 - 3 - ns
VCC = 6 V 3 2- 3 - 3 - ns
trec recovery
time MR to SHCP; see Figure 12
VCC = 2 V 50 19 - 65 - 75 - ns
VCC = 4.5 V 10 7- 13 - 15 - ns
VCC = 6 V 9 6- 11 - 13 - ns
fmax maximum
frequency SHCP or STCP;
see Figure 9 and 10
VCC = 2 V 9 30 - 4.8 - 4 - MHz
VCC = 4.5 V 30 91 - 24 - 20 - MHz
VCC = 6 V 35 108 - 28 - 24 - MHz
CPD power
dissipation
capacitance
fi = 1 MHz; VI=GNDtoV
CC [6][7] -115- - - - - pF
Table 7. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 14.
Symbol Parameter Conditions 25 C40 C to +85 C40 C to +125 CUnit
Min Typ[1] Max Min Max Min Max
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 11 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
[1] Typical values are measured at nominal supply voltage.
[2] tpd is the same as tPHL and tPLH.
[3] tpd is the same as tPHL only.
[4] ten is the same as tPZL and tPZH.
[5] tdis is the same as tPLZ and tPHZ.
[6] CPD is used to determine the dynamic power dissipation (PDin W).
PD=C
PD VCC2fi+(CLVCC2fo) where:
fi= input frequency in MHz;
fo= output frequency in MHz;
(CLVCC2fo) = sum of outputs;
CL= output load capacitance in pF;
VCC = supply voltage in V.
[7] All 9 outputs switching.
74HCT595; VCC = 4.5 V to 5.5 V
tpd propagation
delay SHCP to Q7S; see Figure 9 [2] -2542- 53 - 63ns
STCP to Qn; see Figure 10 [2] -2440- 50 - 60ns
MR to Q7S; see Figure 12 [3] -2340- 50 - 60ns
ten enable time OE to Qn; see Figure 13 [4] -2135- 44 - 53ns
tdis disable time OE to Qn; see Figure 13 [5] -1830- 38 - 45ns
tWpulse width SHCP HIGH or LOW;
see Figure 9 16 6 - 20 - 24 - ns
STCP HIGH or LOW;
see Figure 10 16 5 - 20 - 24 - ns
MR LOW; see Figure 12 20 8 - 25 - 30 - ns
tsu set-up time DS to SHCP; see Figure 10 16 5 - 20 - 24 - ns
SHCP to STCP;
see Figure 11 16 8 - 20 - 24 - ns
thhold time DS to SHCP; see Figure 11 32- 3 - 3 - ns
trec recovery
time MR to SHCP; see Figure 12 10 7- 13 - 15 - ns
fmax maximum
frequency SHCP and STCP;
see Figure 9 and 10 30 52 - 24 - 20 - MHz
CPD power
dissipation
capacitance
fi = 1 MHz;
VI=GNDtoV
CC 1.5 V [6]
[7] - 130 - - - - - pF
Table 7. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 14.
Symbol Parameter Conditions 25 C40 C to +85 C40 C to +125 CUnit
Min Typ[1] Max Min Max Min Max
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 12 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
12. Waveforms
Measurement points are given in Table 8.
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 9. Shift clock pulse, maximum frequency and inp ut to ou tput propagation delays
PQD
6+&3LQSXW
46RXWSXW
W3/+ W3+/
W:
IPD[
90
92+
9,
*1'
92/
90
Measurement points are given in Table 8.
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 10. Storage clock to output propagation delays
PQD
67&3LQSXW
4QRXWSXW
W3/+ W3+/
W:
WVX IPD[
90
92+
9,
*1'
92/
90
6+&3LQSXW
9,
*1'
90
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 13 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
Measurement points are given in Table 8.
The shaded areas indicate when the input is permitted to change for predictable output performance.
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 11. Dat a s et-u p and hold times
PQD
*1'
*1'
WK
WVX
WK
WVX
90
90
90
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9,
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6+&3LQSXW
'6LQSXW
Measurement points are given in Table 8.
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 12. Master reset to output prop agation delays
PQD
05LQSXW
6+&3LQSXW
46RXWSXW
W
3+/
W
:
W
UHF
9
0
9
2+
9
2/
9
,
*1'
9
,
*1'
9
0
9
0
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 14 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
Measurement points are given in Table 8.
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 13. Enable and disa ble times
PVD
W3/=
W3+=
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Table 8. Measurement points
Type Input Output
VMVM
74HC595 0.5VCC 0.5VCC
74HCT595 1.3 V 1.3 V
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 15 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
Test data is given in Table 9.
Definitions for test circuit:
CL = load capacitance including jig and probe capacitance.
RL = load resistance.
RT = termination resistance should be equal to the output impedance Zo of the pulse generator.
S1 = test selection switch.
Fig 14. Test circuit for measuring switching times
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Type Input Load S1 position
VItr, tfCLRLtPHL, tPLH tPZH, tPHZ tPZL, tPLZ
74HC595 VCC 6 ns 50 pF 1 kopen GND VCC
74HCT595 3 V 6 ns 50 pF 1 kopen GND VCC
74HC_HCT595 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 7 — 26 January 2015 16 of 24
NXP Semiconductors 74HC595; 74HCT595
8-bit serial-in, serial or parallel-out shift register with output latches; 3-state
13. Package outline
Fig 15. Package outline SOT38-4 (DIP16)
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