CD74HCT4024EE4

高速CMOS逻辑7级二进制纹波计数器 High-Speed CMOS Logic 7-Stage Binary Ripple Counter

Description

The ’HC4024 and ’HCT4024 are 7-stage ripple-carry binary counters. All counter stages are master-slave flip-flops. The state of the stage advances one count on the negative transition of each input pulse; a high voltage level on the MR line resets all counters to their zero state. All inputs and outputs are buffered.

Features

• Fully Static Operation

• Buffered Inputs

• Common Reset

• Negative Edge Clocking

• 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