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SCLS374L − MAY 1997 − REVISED FEBRUARY 2004
SN54AHCT595 . . . J OR W PACKAGE
SN74AHCT595 . . . D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
D
D
D
D
Inputs Are TTL-Voltage Compatible
8-Bit Serial-In, Parallel-Out Shift
Shift Register Has Direct Clear
Q
Q
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
B
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
Q
C
D
A
Q
SER
OE
D
ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
Q
E
Q
12 RCLK
F
11
10
9
Q
SRCLK
SRCLR
G
− 1000-V Charged-Device Model (C101)
Q
H
GND
Q
H′
description/ordering information
The ’AHCT595 devices contain an 8-bit serial-in,
parallel-out shift register that feeds an 8-bit D-type
storage register. The storage register has parallel
3-state outputs. Separate clocks are provided for
the shift and storage registers. The shift register
has a direct overriding clear (SRCLR) input, serial
(SER) input, and serial outputs for cascading.
When the output-enable (OE) input is high, the
outputs are in the high-impedance state.
SN54AHCT595 . . . FK PACKAGE
(TOP VIEW)
3
2
1 20 19
18
SER
OE
Q
4
5
6
7
8
D
Q
17
16
E
NC
NC
15 RCLK
14
9 10 11 12 13
Q
F
Both the shift register clock (SRCLK) and storage
register clock (RCLK) are positive-edge triggered.
If both clocks are connected together, the shift
register always is one clock pulse ahead of the
storage register.
SRCLK
Q
G
NC − No internal connection
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP − N
SOIC − D
Tube
SN74AHCT595N
SN74AHCT595N
Tube
SN74AHCT595D
AHCT595
Tape and reel
Tape and reel
Tape and reel
Tube
SN74AHCT595DR
SN74AHCT595NSR
SN74AHCT595DBR
SN74AHCT595PW
SN74AHCT595PWR
SNJ54AHCT595J
SNJ54AHCT595W
SNJ54AHCT595FK
SOP − NS
AHCT595
HB595
−40°C to 85°C
SSOP − DB
TSSOP − PW
HB595
Tape and reel
Tube
CDIP − J
CFP − W
LCCC − FK
SNJ54AHCT595J
SNJ54AHCT595W
SNJ54AHCT595FK
Tube
−55°C to 125°C
Tube
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2004, Texas Instruments Incorporated
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1
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