SN54AHC594_07 Datasheet, PDF (1/18 Pages) Texas Instruments – 8-BIT SHIFT REGISTERS WITH OUTPUT REGISTERS

D Inputs Are TTL-Voltage Compatible
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 Both 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 ’AHCT594 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 both the shift and storage registers.
A serial (Q_H′) output is provided for cascading
purposes.
Both the shift register (SRCLK) and storage
register (RCLK) clocks are positive edge
triggered. If both clocks are connected together,
the shift register always is one count pulse ahead
of the storage register.
SN54AHCT594, SN74AHCT594
8ĆBIT SHIFT REGISTERS
WITH OUTPUT REGISTERS
SCLS417H − JUNE 1998 − REVISED SEPTEMBER 2003
SN54AHCT594 . . . J OR W PACKAGE
SN74AHCT594 . . . 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′
SN54AHCT594 . . . 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
SN74AHCT594N
SN74AHCT594N
SOIC − D
Tube
Tape and reel
SN74AHCT594D
SN74AHCT594DR
AHCT594
−40°C to 85°C
SOP − NS
SSOP − DB
Tape and reel
Tape and reel
SN74AHCT594NSR
SN74AHCT594DBR
AHCT594
HB594
TSSOP − PW
Tube
Tape and reel
SN74AHCT594PW
SN74AHCT594PWR
HB594
CDIP − J
Tube
SNJ54AHCT594J
SNJ54AHCT594J
−55°C to 125°C CFP − W
Tube
SNJ54AHCT594W
SNJ54AHCT594W
LCCC − FK
Tube
SNJ54AHCT594FK SNJ54AHCT594FK
† _{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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