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SN74ALS165N Folha de dados(PDF) 1 Page - Texas Instruments

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Nome de Peças SN74ALS165N
Descrição Electrónicos  PARALLEL-LOAD 8-BIT REGISTERS
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

SN74ALS165N Folha de dados(HTML) 1 Page - Texas Instruments

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SN54ALS165, SN74ALS165
PARALLEL-LOAD 8-BIT REGISTERS
SDAS157B – JUNE 1982 – REVISED DECEMBER 1994
Copyright
© 1994, Texas Instruments Incorporated
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Complementary Outputs
Direct Overriding Load (Data) Inputs
Gated Clock Inputs
Parallel-to-Serial Data Conversion
Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
description
The
′ALS165 are parallel-load 8-bit serial shift
registers that, when clocked, shift the data toward
serial (QH and QH) outputs. Parallel-in access to
each stage is provided by eight individual direct
data (A– H) inputs that are enabled by a low level
at the shift/load (SH/LD) input. The
′ALS165 have
a clock-inhibit function and complemented serial
outputs.
Clocking is accomplished by a low-to-high
transition of the clock (CLK) input while SH/LD is
held high and the clock inhibit (CLK INH) input is
held low. The functions of CLK and CLK INH are
interchangeable. Since a low CLK and a
low-to-high
transition
of
CLK
INH
also
accomplishes clocking, CLK INH should be
changed to the high level only while CLK is high.
Parallel loading is inhibited when SH/LD is held
high. The parallel inputs to the register are
enabled while SH/LD is low independently of the
levels of the CLK, CLK INH, or serial (SER) inputs.
The SN54ALS165 is characterized for operation over the full military temperature range of – 55
°C to 125°C. The
SN74ALS165 is characterized for operation from 0
°C to 70°C.
FUNCTION TABLE
INPUTS
FUNCTION
SH/LD
CLK
CLK INH
FUNCTION
L
X
X
Parallel load
H
H
X
No change
H
X
H
No change
H
L
Shift†
H
L
Shift†
† Shift = content of each internal register shifts
toward serial outputs. Data at SER is shifted
into first register.
SN54ALS165 ...J PACKAGE
SN74ALS165 ...D OR N PACKAGE
(TOP VIEW)
32
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
D
C
NC
B
A
E
F
NC
G
H
SN54ALS165 . . . FK PACKAGE
(TOP VIEW)
NC – No internal connection
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SH/LD
CLK
E
F
G
H
QH
GND
VCC
CLK INH
D
C
B
A
SER
QH
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.


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