SN54AHC594 Datasheet, PDF (1/17 Pages) Texas Instruments – 8-BIT SHIFT REGISTERS WITH OUTPUT REGISTERS

D Operating Range 2-V to 5.5-V V_CC
D 8-Bit Serial-In, Parallel-Out Shift
Registers With Storage
D Independent Direct Overriding Clears
on Shift and Storage Registers
D Independent Clocks for Shift and
Storage Registers
D Latch-Up Performance Exceeds 100 mA
Per JESD 78, Class II
D 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 ’AHC594 devices contain an 8-bit serial-in,
parallel-out shift register that feeds an 8-bit D-type
storage register. Separate clocks and direct
overriding clear (SRCLR, RCLR) inputs are
provided on the shift and storage registers. A
serial (Q_H′) output is provided for cascading
purposes.
The shift register (SRCLK) and storage register
(RCLK) clocks are positive-edge triggered. If the
clocks are tied together, the shift register always
is one clock pulse ahead of the storage register.
SN54AHC594, SN74AHC594
8ĆBIT SHIFT REGISTERS
WITH OUTPUT REGISTERS
SCLS423F − JUNE 1998 − REVISED SEPTEMBER 2003
SN54AHC594 . . . J OR W PACKAGE
SN74AHC594 . . . D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
Q_{B 1}
Q_C 2
Q_D 3
Q_E 4
Q_F 5
Q_G 6
Q_H 7
GND 8
16 ^V_CC
15 Q_A
14 SER
13 RCLR
12 RCLK
11 SRCLK
10 SRCLR
9 Q_H′
SN54AHC594 . . . FK PACKAGE
(TOP VIEW)
Q_D
3 2 1 20 19
4
18
SER
Q_E 5
17 RCLR
NC 6
16 NC
Q_F 7
15 RCLK
Q_G 8
14 SRCLK
9 10 11 12 13
NC − No internal connection
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube
SN74AHC594N
SN74AHC594N
SOIC − D
Tube
Tape and reel
SN74AHC594D
SN74AHC594DR
AHC594
−40°C to 85°C
SOP − NS
Tape and reel SN74AHC594NSR
AHC594
SSOP − DB
Tape and reel SN74AHC594DBR
HA594
TSSOP − PW
Tube
Tape and reel
SN74AHC594PW
SN74AHC594PWR
HA594
CDIP − J
Tube
SNJ54AHC594J
SNJ54AHC594J
−55°C to 125°C CFP − W
Tube
SNJ54AHC594W
SNJ54AHC594W
LCCC − FK
Tube
SNJ54AHC594FK
SNJ54AHC594FK
† _{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.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
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Copyright  2003, Texas Instruments Incorporated
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