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| 型號(hào)： | SN54HC165WR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 計(jì)數(shù)移位寄存器 |
| 英文描述： | HC/UH SERIES, 8-BIT RIGHT PARALLEL IN SERIAL OUT SHIFT REGISTER, COMPLEMENTARY OUTPUT, CDFP16 |
| 封裝： | CERAMIC, FP-16 |
| 文件頁(yè)數(shù)： | 1/11頁(yè) |
| 文件大小： | 223K |
| 代理商： | SN54HC165WR |
SN54HC165, SN74HC165
8-BIT PARALLEL-LOAD SHIFT REGISTERS
SCLS116C – DECEMBER 1982 – REVISED MAY 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Complementary Outputs
D Direct Overriding Load (Data) Inputs
D Gated Clock Inputs
D Parallel-to-Serial Data Conversion
D Package Options Include Plastic
Small-Outline (D), Thin Shrink
Small-Outline (PW), and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J)
300-mil DIPs
description
The ’HC165 are 8-bit parallel-load shift registers
that, when clocked, shift the data toward a serial
(QH) output. 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 ’HC165 also feature
a
clock-inhibit
(CLK
INH)
function
and
a
complementary serial (QH) output.
Clocking is accomplished by a low-to-high
transition of the clock (CLK) input while SH/LD is
held high and CLK INH 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 accomplish 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. While SH/LD is low, the parallel inputs to the
register are enabled independently of the levels of
the CLK, CLK INH, or serial (SER) inputs.
The SN54HC165 is characterized for operation over the full military temperature range of –55
°C to 125°C. The
SN74HC165 is characterized for operation from –40
°C to 85°C.
FUNCTION TABLE
INPUTS
FUNCTION
SH/LD
CLK
CLK INH
FUNCTION
L
X
Parallel load
H
X
No change
H
X
H
No change
H
L
↑
Shift
H
↑
L
Shift
Shift = content of each internal register shifts
toward serial output QH. Data at SER is
shifted into the first register.
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.
SN54HC165 ...J OR W PACKAGE
SN74HC165 . . . D, N, OR PW 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
SN54HC165 . . . FK PACKAGE
(TOP VIEW)
CLK
SH/LD
NC
SER
CLK
INH
H
GND
NC
V
CC
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
Q
H
Q
NC – No internal connection
Copyright
1997, Texas Instruments Incorporated
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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