特性 Features

? Hysteresis on Clock Inputs for Improved Noise Immunity

and Increased Input Rise and Fall Times

? Asynchronous Reset

? Complementary Outputs

? Buffered Inputs

? Typical fMAX = 60MHz at VCC = 5V, CL = 15pF,

TA = 25oC

? Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

? Wide Operating Temperature Range . . . -55oC to 125oC

? 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

描述 Description

The ’HC107 and CD74HCT107 utilize silicon gate CMOS

technology to achieve operating speeds equivalent to LSTTL

parts. They exhibit the low power consumption of standard

CMOS integrated circuits, together with the ability to drive 10

LSTTL loads.

These flip-flops have independent J, K, Reset and Clock

inputs and Q and Q outputs. They change state on the

negative-going transition of the clock pulse. Reset is

accomplished asynchronously by a low level input.

This device is functionally identical to the HC/HCT73 but

differs in terminal assignment and in some parametric limits.

The HCT logic family is functionally as well as pin compatible

with the standard LS family.