CD74HC194 - 高速 CMOS 逻辑 4 位双向通用移位寄存器

CD74HC194是TI德州仪器公司的一款移位寄存器产品，CD74HC194是高速 CMOS 逻辑 4 位双向通用移位寄存器，本站介绍了CD74HC194的封装应用图解、特点和优点、功能等，并给出了与CD74HC194相关的TI元器件型号供参考。

CD74HC194 - 高速 CMOS 逻辑 4 位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

The ’HC194 and CD74HCT194 are 4-bit shift registers with Asynchronous Master Reset (MR)\. In the parallel mode (S0 and S1 are high), data is loaded into the associated flip-flop and appears at the output after the positive transition of the clock input (CP). During parallel loading serial data flow is inhibited. Shift left and shift right are accomplished synchronously on the positive clock edge with serial data entered at the shift left (DSL) serial input for the shift right mode, and at the shift right (DSR) serial input for the shift left mode. Clearing the register is accomplished by a Low applied to the Master Reset (MR)\ pin.

产品特性

Four Operating Modes
- Shift Right, Shift Left, Hold and Reset
Synchronous Parallel or Serial Operation
Typical fMAX = 60MHz at VCC = 5V, CL = 15pF, TA = 25°C
Asynchronous Master Reset
Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
Wide Operating Temperature Range . . . –55°C to 125°C
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL Logic ICs
HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il 1µA at VOL, VOH

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