Philips Semiconductors

Product specification

74F579

8-bit bidirectional binary counter (3-State)

1992 May 04

9

AC WAVEFORMS

The shaded areas indicate when the input is permitted to change for predictable output performance.

CP

TC

SF01089

Waveform 1. Propagation Delay, Clock Input to Output,

Clock Pulse Width and Maximum Clock Frequency

MR

CP

SF01090

Waveform 2. Master Reset Pulse Width, Master Reset to

Output Delay and Master Reset to Clock Recovery Time

CET

TC

SF01091

Waveform 3. Propagation Delay, CET Input to

Terminal Count Output

MR, U/D

TC

SF01092

Waveform 4. Propagation Delay, U/D and MR Inputs to

Terminal Count Output

CP

PE, CS,

U/D, SR,

CET

SF01093

Waveform 5. Setup and Hold Times

PE, OE,

CS

SF01094

Waveform 6. 3-State Output Enable Time to High Level and

Output Disable Time from High Level

PE, OE,

CS

SF01095

Waveform 7. 3-State Output Enable Time to Low Level and

Output Disable Time from Low Level