CD74HC597数据手册集成电路（IC）的移位寄存器规格书PDF

描述 Description

The ’HC597 and CD74HCT597 are high-speed silicon gate CMOS devices that are pin compatible with the LSTTL 597 devices. Each device consists of an 8-flip-flop input register and an 8-bit parallel-in/serial-in, serial-out shift register. Each register is controlled by its own clock. A \"low\" on the parallel load input (PL\\) shifts parallel stored data asynchronously into the shift register. A \"low\" master input (MR\\) clears the shift register. Serial input data can also be synchronously shifted through the shift register when PL\\ is high.

特性 Features

• Buffered Inputs
• Asynchronous Parallel Load
• 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
Data sheet acquired from Harris Semiconductor