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SCLS374L MAY 1997 REVISED FEBRUARY 2004
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Inputs Are TTL-Voltage Compatible
8-Bit Serial-In, Parallel-Out Shift
Shift Register Has Direct Clear
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection Exceeds JESD 22
2000-V Human-Body Model (A114-A)
200-V Machine Model (A115-A)
1000-V Charged-Device Model (C101)
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.
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.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N
Tube
SN74AHCT595N
SN74AHCT595N
SOIC D
Tube
SN74AHCT595D
AHCT595
Tape and reel
SN74AHCT595DR
°
C to 85
°
C
40
SOP NS
Tape and reel
SN74AHCT595NSR
AHCT595
SSOP DB
Tape and reel
SN74AHCT595DBR
HB595
TSSOP PW
Tube
SN74AHCT595PW
HB595
Tape and reel
SN74AHCT595PWR
CDIP J
Tube
SNJ54AHCT595J
SNJ54AHCT595J
55 C to 125 C
CFP W
Tube
SNJ54AHCT595W
SNJ54AHCT595W
LCCC FK
Tube
SNJ54AHCT595FK
SNJ54AHCT595FK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
Copyright
2004, Texas Instruments Incorporated
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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.
SN54AHCT595 . . . J OR W PACKAGE
SN74AHCT595 . . . D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
SN54AHCT595 . . . FK PACKAGE
(TOP VIEW)
NC No internal connection
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Q
B
Q
C
Q
D
Q
E
Q
F
Q
G
Q
H
GND
V
CC
Q
A
SER
OE
RCLK
SRCLK
SRCLR
Q
H
′
4
5
6
7
8
18
17
16
15
14
SER
OE
NC
RCLK
SRCLK
Q
D
Q
E
NC
Q
F
Q
G
Q
N
S
H
Q
G
N
C
Q
B
V
C
Q
A
H
Q
′
9 10 11 12 13
3
2
1 20 19