SN74LS194A - 双向通用移位寄存器

SN74LS194A是TI德州仪器公司的一款移位寄存器产品，SN74LS194A是双向通用移位寄存器，本站介绍了SN74LS194A的封装应用图解、特点和优点、功能等，并给出了与SN74LS194A相关的TI元器件型号供参考。

SN74LS194A - 双向通用移位寄存器 - 移位寄存器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

These bidirectional shift registers are 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: Inhibit clock (do nothing) Shift right (in the direction QA toward QD) Shift left (in the direction QD toward QA) Parallel (broadside) load

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 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 shift register is inhibited when both mode control inputs are low. The mode controls of the SN54194/SN74194 should be changed only while the clock input is high.

产品特性

Parallel Inputs and Outputs
Four Operating Modes:
- Synchronous Parallel Load
- Right Shift
- Left Shift
- Do Nothing
Positive Edge-Triggered Clocking
Direct Overriding Clear

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