HD74HC299

Rev.2.00 Jan 31, 2006 page 7 of 8

0 V

A to H

Note : 1. Input pulse : PRR

50 %

0 V

Clock

50 %

90 %

10 %

50 %

50 %

50 %

50 %

50 %

90 %

10 %

90 %

10 %

90 %

10 %

A to H enabled

A to H disabled

A to H enabled

A to H disabled

50 %

50 %

90 %

10 %

Waveform - A

Waveform - B

0 V

50 %

tf

10 %

90 %

50 %

tr

10 %

90 %

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.