CD74HC393 Datasheet PDF - Harris

●Description

●The Harris CD74HC393 and CD74HCT393 are 4-stage ripple-carry binary counters. Al counter stages are master slave flip-flops. The state of the stage advances one count on the negative transition of each clock 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