HD74HC251

Rev.2.00 Jan 31, 2006 page 6 of 8

Waveforms

50 %

50 %

0 V

10 %

10 %

90 %

90 %

50 %

50 %

Input G

Waveform – A

Waveform – B

90 %

10 %

Notes : 1. Input waveform : PRR

2. Waveform– A is for an output with internal conditions such that the

output is low except when disabled by the output control.

3. Waveform– B is for an output with internal conditions such that the

output is high except when disabled by the output control.

4. The output are measured one at a time with one transition per measurement.

0 V

10 %

90 %

50 %

50 %

50 %

50 %

10 %

90 %

10 %

90 %

10 %

90 %

50 %

50 %

10 %

90 %

10 %

90 %

Input

Same-phase

output

Inverse-phase

output