HD74LS194A

更新时间： 2024-09-23 05:35:15

品牌	Logo	应用领域
瑞萨 - RENESAS		移位寄存器
页数	文件大小	规格书
8页	192K
描述
4-bit Bidirectional Universal Shift Register

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HD74LS194A 数据手册

HD74LS194A

4-bit Bidirectional Universal Shift Register

REJ03D0456–0300

Rev.3.00

Jul.15.2005

The bidirectional shift register is designed to incorporate virtually all of the features a system designer may want in a

shift register. The circuit contains 46 equivalent gates and features parallel inputs, parallel outputs, right-shift and left-

shift serial inputs. Operating-mode-control inputs, and a direct overriding clear line. The register has four distinct

modes of operation, namely;

•

Parallel (broadside) load

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 are loaded into the associated flip-flops and appear at the outputs after the positive transition 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 S₀is high and S₁is low. Serial data for this mode is entered at the shift-right data input.

When S₀is low and S₁is 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 Information

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

Part Name

Package Type

DILP-16 pin

PRDP0016AE-B

(DP-16FV)

HD74LS194AP

HD74LS194AFPEL

—

PRSP0016DH-B

(FP-16DAV)

SOP-16 pin (JEITA)

EL (2,000 pcs/reel)

Note: Please consult the sales office for the above package availability.

Pin Arrangement

Clear

V_CC

Q_A

CLR

Shift Right

Serial Input

Q_A

Q_B

Q_C

Q_D

Q_B

Parallel

Outputs

Q_C

Parallel

Inputs

12 Q_D

S₁

Clock

Shift Left

Serial Input

S₁

S₀

Mode

Control

S₀

GND

(Top view)

Rev.3.00, Jul.15.2005, page 1 of 7

12 3 4 5 6 7 8

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与HD74LS194A相关器件

型号	品牌	获取价格	描述	数据表
HD74LS194AFP	HITACHI	获取价格	Parallel In Parallel Out, LS Series, 4-Bit, Bidirectional, True Output, TTL, PDSO16, FP-16
HD74LS194AFPEL	RENESAS	获取价格	4-bit Bidirectional Universal Shift Register
HD74LS194AFP-EL	HITACHI	获取价格	Parallel In Parallel Out, LS Series, 4-Bit, Bidirectional, True Output, TTL, PDSO16, EIAJ,
HD74LS194AP	RENESAS	获取价格	4-bit Bidirectional Universal Shift Register
HD74LS194AP-E	RENESAS	获取价格	LS SERIES, 4-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, PDIP1
HD74LS194ARP	HITACHI	获取价格	Parallel In Parallel Out, LS Series, 4-Bit, Bidirectional, True Output, TTL, PDSO16, FP-16
HD74LS195A	HITACHI	获取价格	4-bit Parallel-Access Shift Registers
HD74LS195A	RENESAS	获取价格	4-bit Parallel-Access Shift Register
HD74LS195AFP	HITACHI	获取价格	Parallel In Parallel Out, LS Series, 4-Bit, Right Direction, True Output, TTL, PDSO16, FP-
HD74LS195AFP-E	RENESAS	获取价格	LS SERIES, 4-BIT RIGHT PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, PDSO16, FP-16

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