HD74HCT623 Просмотр технического описания (PDF) - Renesas Electronics

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HD74HCT623

Octal Bus Transceivers

Renesas Electronics 

HD74HCT620, HD74HCT623

HD74HCT620, HD74HCT623

• Waveform – 2

tf

tr

Enable Input

90 %

1.3 V

90 %

VCC

1.3 V

GBA

10 %

10 %

0V

tZL

tLZ

Waveform - A

1.3 V

tZH

10 %

tHZ

VOH

VOL

Waveform - B

1.3 V

90 %

VOH

VOL

• Waveform – 3

tr

tf

Enable Input

90 %

1.3 V

90 %

1.3 V

VCC

GAB

10 %

10 %

0V

tZL

tLZ

Waveform - A

1.3 V

tZH

10 %

tHZ

VOH

VOL

Waveform - B

1.3 V

90 %

VOH

VOL

Notes : 1. Input waveform : PRR ≤ 1 MHz, duty cycle 50%, tr ≤ 6 ns, tf ≤ 6 ns

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.

Rev.2.00 Mar 30, 2006 page 7 of 8

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