HD74HC620 Просмотр технического описания (PDF) - Renesas Electronics

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Компоненты Описание

производитель

HD74HC620

Octal Bus Transceivers

Renesas Electronics 

HD74HC620, HD74HC623

HD74HC623

• Waveform – 2

tf

tr

Enable Input

90 %

50 %

90 %

VCC

50 %

GBA

10 %

10 %

0V

tZL

tLZ

Waveform - A

50 %

tZH

10 %

tHZ

VOH

VOL

Waveform - B

50 %

90 %

VOH

VOL

• Waveform – 3

tr

tf

Enable Input

90 %

50 %

90 %

50 %

VCC

GAB

10 %

10 %

0V

tZL

tLZ

Waveform - A

50 %

tZH

10 %

tHZ

VOH

VOL

Waveform - B

50 %

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 8 of 11

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