Shift Registers. SN74LS165A Datasheet

SN74LS165A Registers. Datasheet pdf. Equivalent

SN74LS165A Datasheet
Recommendation SN74LS165A Datasheet
Part SN74LS165A
Description Parallel-Load 8-Bit Shift Registers
Feature SN74LS165A; The SN54165 and SN74165 devices are obsolete and are no longer supplied. SN54165, SN54LS165A, SN741.
Manufacture etcTI
Datasheet
Download SN74LS165A Datasheet




Texas Instruments SN74LS165A
The SN54165 and SN74165 devices
are obsolete and are no longer supplied.
SN54165, SN54LS165A, SN74165, SN74LS165A
PARALLEL-LOAD 8-BIT SHIFT REGISTERS
SDLS062D – OCTOBER 1976 – REVISED FEBRUARY 2002
D Complementary Outputs
D Direct Overriding Load (Data) Inputs
D Gated Clock Inputs
D Parallel-to-Serial Data Conversion
TYPE
’165
’LS165A
TYPICAL MAXIMUM
CLOCK FREQUENCY
26 MHz
35 MHz
TYPICAL
POWER DISSIPATION
210 mW
90 mW
description
The ’165 and ’LS165A are 8-bit serial shift
registers that shift the data in the direction of QA
toward QH when clocked. Parallel-in access to
each stage is made available by eight individual,
direct data inputs that are enabled by a low level
at the shift/load (SH/LD) input. These registers
also feature gated clock (CLK) inputs and
complementary outputs from the eighth bit. All
inputs are diode-clamped to minimize
transmission-line effects, thereby simplifying
system design.
Clocking is accomplished through a two-input
positive-NOR gate, permitting one input to be
used as a clock-inhibit function. Holding either of
the clock inputs high inhibits clocking, and holding
either clock input low with SH/LD high enables the
other clock input. Clock inhibit (CLK INH) should
be changed to the high level only while CLK is
high. Parallel loading is inhibited as long as SH/LD
is high. Data at the parallel inputs are loaded
directly into the register while SH/LD is low,
independently of the levels of CLK, CLK INH, or
serial (SER) inputs.
SN54165, SN54LS165A . . . J OR W PACKAGE
SN74165 . . . N PACKAGE
SN74LS165A . . . D, N, OR NS PACKAGE
(TOP VIEW)
SH/LD
CLK
E
F
G
H
QH
GND
1
2
3
4
5
6
7
8
16 VCC
15 CLK INH
14 D
13 C
12 B
11 A
10 SER
9 QH
SN54LS165A . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
E4
18 D
F5
17 C
NC 6
16 NC
G7
15 B
H8
14 A
9 10 11 12 13
NC – No internal connection
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.
PRODUCTION DATA information is 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 DALLAS, TEXAS 75265
Copyright 2002, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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Texas Instruments SN74LS165A
SN54165, SN54LS165A, SN74165, SN74LS165A
PARALLEL-LOAD 8-BIT SHIFT REGISTERS
SDLS062D OCTOBER 1976 REVISED FEBRUARY 2002
The SN54165 and SN74165 devices
are obsolete and are no longer supplied.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N Tube
SN74LS165AN
SN74LS165AN
0°C to 70°C
SOIC D
Tube
Tape and reel
SN74LS165AD
SN74LS165ADR
LS165A
SOP NS Tape and reel SN74LS165ANSR
74LS165A
CDIP J
55°C to 125°C
CFP W
Tube
Tube
Tube
SN54LS165AJ
SNJ54LS165AJ
SNJ54LS165AW
SN54LS165AJ
SNJ54LS165AJ
SNJ54LS165AW
LCCC FK Tube
SNJ54LS165AFK
SNJ54LS165AFK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
FUNCTION TABLE
INPUTS
SH/LD CLK INH CLK
L XX
H LL
H L
H L
H HX
SER
X
X
H
L
X
PARALLEL
A...H
a...h
X
X
X
X
INTERNAL
OUTPUTS
QA
a
QA0
H
L
QA0
QB
b
QB0
QAn
QAn
QB0
OUTPUT
QH
h
QH0
QGn
QGn
QH0
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265



Texas Instruments SN74LS165A
The SN54165 and SN74165 devices
are obsolete and are no longer supplied.
schematics of inputs and outputs
EQUIVALENT OF EACH INPUT
VCC
Req
SN54165, SN54LS165A, SN74165, SN74LS165A
PARALLEL-LOAD 8-BIT SHIFT REGISTERS
SDLS062D OCTOBER 1976 REVISED FEBRUARY 2002
165
TYPICAL OF BOTH OUTPUTS
VCC
100 NOM
Input
Output
SH/LD: Req = 3 kNOM
Other Inputs: Req = 6 kNOM
EQUIVALENT OF PARALLEL
INPUTS AND SERIAL INPUT
VCC
24 kNOM
Input
LS165A
EQUIVALENT OF ALL
OTHER INPUTS
Req
Input
TYPICAL OF BOTH OUTPUTS
VCC
120 NOM
Output
CLK, CLK INH: Req = 10 kNOM
SH/LD: Req = 13 kNOM
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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