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Details, datasheet, quote on part number:SN74AHCT594PWR
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Datasheet text preview:
SCLS417H - JUNE 1998 - REVISED SEPTEMBER 2003
SN54AHCT594, SN74AHCT594 8 BIT SHIFT REGISTERS WITH OUTPUT REGISTERS
D Inputs Are TTL-Voltage Compatible D 8-Bit Serial-In, Parallel-Out Shift
Registers With Storage
SN54AHCT594 . . . J OR W PACKAGE SN74AHCT594 . . . D, DB, N, NS, OR PW PACKAGE (TOP VIEW)
D Independent Direct Overriding Clears D D D
on Shift and Storage Registers Independent Clocks for Both Shift and Storage Registers 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)
QB QC QD QE QF QG QH GND
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VCC QA SER RCLR RCLK SRCLK SRCLR Q H
SN54AHCT594 . . . FK PACKAGE (TOP VIEW)
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 (QH) 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. ORDERING INFORMATION
TA PDIP - N SOIC - D -40°C to 85 C 85°C SOP - NS SSOP - DB TSSOP - PW CDIP - J -55°C to 125 C 125°C CFP - W LCCC - FK PACKAGE Tube Tube Tape and reel Tape and reel Tape and reel Tube Tape and reel Tube Tube Tube
QD QE NC QF QG
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
NC VCC QA SER RCLR NC RCLK SRCLK
TOP-SIDE MARKING
QH
GND NC Q H
QC QB
description/ordering information
NC - No internal connection
ORDERABLE PART NUMBER SN74AHCT594N SN74AHCT594D SN74AHCT594DR SN74AHCT594NSR SN74AHCT594DBR SN74AHCT594PW SN74AHCT594PWR SNJ54AHCT594J SNJ54AHCT594W SNJ54AHCT594FK
SN74AHCT594N AHCT594 AHCT594 HB594 HB594 SNJ54AHCT594J SNJ54AHCT594W 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. POST OFFICE BOX 655303
Copyright 2003, Texas Instruments Incorporated
· DALLAS, TEXAS 75265
SRCLR
1
SCLS417H - JUNE 1998 - REVISED SEPTEMBER 2003
SN54AHCT594, SN74AHCT594 8 BIT SHIFT REGISTERS WITH OUTPUT REGISTERS
INPUTS SER X L H L X X X SRCLK X X X X SRCLR L H H H X X X
FUNCTION TABLE FUNCTION Shift register is cleared. First stage of shift register goes low. Other stages store the data of previous stage, respectively. First stage of shift register goes high. Other stages store the data of previous stage, respectively. Shift-register state is not changed. Storage register is cleared. Shift-register data is stored in the storage register. Storage-register state is not changed.
RCLK X X X X X
RCLR X X X X L H H
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SCLS417H - JUNE 1998 - REVISED SEPTEMBER 2003
SN54AHCT594, SN74AHCT594 8 BIT SHIFT REGISTERS WITH OUTPUT REGISTERS
logic diagram (positive logic)
13 RCLR 12 RCLK 10 SRCLR SRCLK SER 11 14 1D Q C1 R R 3D Q C3 15 QA
2D Q C2 R
R 3D Q C3
1 QB
2D Q C2 R
R 3D Q C3
2 QC
2D Q C2 R
R 3D Q C3
3
QD
2D Q C2 R
R 3D Q C3
4 QE
2D Q C2 R
R 3D Q C3
5 QF
2D Q C2 R
R 3D Q C3
6 QG
2D Q C2 R
R 3D Q C3
7 QH 9 Q H
Pin numbers shown are for the D, DB, J, N, NS, PW, and W packages.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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