74LS194

更新时间： 2024-11-17 22:53:15

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		移位寄存器
页数	文件大小	规格书
6页	71K
描述
4-Bit Bidirectional Universal Shift Register

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数据手册

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74LS194 数据手册

August 1986

Revised March 2000

DM74LS194A

4-Bit Bidirectional Universal Shift Register

General Description

Features

This bidirectional shift register is designed to incorporate

virtually all of the features a system designer may want in a

shift register; they feature parallel inputs, parallel outputs,

right-shift and left-shift serial inputs, operating-mode-con-

trol inputs, and a direct overriding clear line. The register

has four distinct modes of operation, namely:

■ Parallel inputs and outputs

■ Four operating modes:

Synchronous parallel load

Right shift

Left shift

Do nothing

Parallel (broadside) load

■ Positive edge-triggered clocking

■ Direct overriding clear

Shift right (in the direction Q_Atoward Q_D)

Shift left (in the direction Q_Dtoward Q_A)

Inhibit clock (do nothing)

Synchronous parallel loading is accomplished by applying

the four bits of data and taking both mode control inputs,

S0 and S1, HIGH. The data is loaded into the associated

flip-flops and appear at the outputs after the positive transi-

tion of the clock input. During loading, serial data flow is

inhibited.

Shift right is accomplished synchronously with the rising

edge of the clock pulse when S0 is HIGH and S1 is LOW.

Serial data for this mode is entered at the shift-right data

input. When S0 is LOW and S1 is HIGH, data shifts left

synchronously and new data is entered at the shift-left

serial input.

Clocking of the flip-flop is inhibited when both mode control

inputs are LOW.

Ordering Code:

Order Number Package Number

Package Description

DM74LS194AM

DM74LS194AN

M16A

N16E

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

DS006407

www.fairchildsemi.com

12 3 4 5 6

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与74LS194相关器件

型号	品牌	获取价格	描述	数据表
74LS194A	NSC	获取价格	4-Bit Bidirectional Universal Shift Register
74LS194ADCQM	ROCHESTER	获取价格	Parallel In Parallel Out
74LS194AFC	FAIRCHILD	获取价格	Shift Register, 4-Bit, TTL, CDFP16,
74LS194AFCQM	FAIRCHILD	获取价格	Shift Register, 4-Bit, TTL, CDFP16,
74LS194AFCQR	ROCHESTER	获取价格	Parallel In Parallel Out
74LS195	ONSEMI	获取价格	LOW POWER SCHOTTKY
74LS195	HITACHI	获取价格	4-bit Parallel-Access Shift Registers
74LS195	TI	获取价格	4-BIT PARALLEL-ACCESS SHIFT REGISTERS
74LS195	MOTOROLA	获取价格	UNIVERSAL 4-BIT SHIFT REGISTER
74LS195A	NSC	获取价格	UNIVERSAL 4-BIT SHIFT REGISTER