Datasheet

 
  
  
SCLS423F − JUNE 1998 − REVISED SEPTEMBER 2003
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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.
ORDERING INFORMATION
T
A
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N Tube SN74AHC594N SN74AHC594N
SOIC − D
Tube SN74AHC594D
AHC594
SOIC − D
Tape and reel SN74AHC594DR
AHC594
−40°C to 85°C
SOP − NS Tape and reel SN74AHC594NSR AHC594
−40 C to 85 C
SSOP − DB Tape and reel SN74AHC594DBR HA594
TSSOP − PW
Tube SN74AHC594PW
HA594
TSSOP − PW
Tape and reel SN74AHC594PWR
HA594
CDIP − J Tube SNJ54AHC594J SNJ54AHC594J
−55°C to 125°C
CFP − W Tube SNJ54AHC594W SNJ54AHC594W
−55 C to 125 C
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.
    !"#$% !%&% 
 %'(#&% !"(($% & ' )"*+!&% &$, ("! !%'(# 
)$!'!&% )$( $ $(# ' $-& %("#$% &%&( .&((&%/,
("!% )(!$%0 $ % %$!$&(+/ %!+"$ $%0 ' &++
)&(&#$$(,
Copyright 2003, Texas Instruments Incorporated
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.
SN54AHC594 ...J OR W PACKAGE
SN74AHC594 . . . D, DB, N, NS, OR PW PACKAGE
(TOP VIEW)
SN54AHC594 . . . 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
RCLR
RCLK
SRCLK
SRCLR
Q
H
3212019
91011 1213
4
5
6
7
8
18
17
16
15
14
SER
RCLR
NC
RCLK
SRCLK
Q
D
Q
E
NC
Q
F
Q
G
Q
NC
SRCLR
H
GND
NC
C
Q
B
V
CC
Q
A
Q
H
Q

Summary of content (21 pages)