DM74LS164N

更新时间： 2024-09-09 23:00:43

品牌	Logo	应用领域
美国国家半导体 - NSC		移位寄存器触发器逻辑集成电路光电二极管
页数	文件大小	规格书
6页	144K
描述
8-Bit Serial In/Parallel Out Shift Registers

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数据手册

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DM74LS164N 数据手册

June 1989

54LS164/DM54LS164/DM74LS164

8-Bit Serial In/Parallel Out Shift Registers

General Description

Features

Gated (enable/disable) serial inputs

These 8-bit shift registers feature gated serial inputs and an

asynchronous clear. A low logic level at either input inhibits

entry of the new data, and resets the first flip-flop to the low

level at the next clock pulse, thus providing complete con-

trol over incoming data. A high logic level on either input

enables the other input, which will then determine the state

of the first flip-flop. Data at the serial inputs may be changed

while the clock is high or low, but only information meeting

the setup and hold time requirements will be entered. Clock-

ing occurs on the low-to-high level transition of the clock

input. All inputs are diode-clamped to minimize transmis-

sion-line effects.

Fully buffered clock and serial inputs

Asynchronous clear

Typical clock frequency 36 MHz

Typical power dissipation 80 mW

Alternate Military/Aerospace device (54LS164) is avail-

able. Contact a National Semiconductor Sales Office/

Distributor for specifications.

Connection Diagram

Function Table

Dual-In-Line Package

Inputs

Clock

Outputs

Clear

...

High Level (steady state), L

Low Level (steady state)

Don’t Care (any input, including transitions)

Transition from low to high level

indicated steady-state input conditions were established.

The level of

Q , Q , or Q , respectively, before the

A B H

the clock; indicates a one-bit shift.

, Q

The level of Q or Q before the most recent

transition of

TL/F/6398–1

Order Number 54LS164DMQB, 54LS164FMQB,

54LS164LMQB, DM54LS164J, DM54LS164W,

DM74LS164M or DM74LS164N

See NS Package Number E20A,

J14A, M14A, N14A or W14B

Logic Diagram

TL/F/6398–2

1995 National Semiconductor Corporation

TL/F/6398

RRD-B30M105/Printed in U. S. A.

12 3 4 5 6

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