HD74HCT245FPEL Просмотр технического описания (PDF) - Renesas Electronics

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HD74HCT245FPEL

Octal Bus Transceivers (with 3-state outputs)

Renesas Electronics 

HD74HCT245

Waveforms

• Waveform – 1

Input A

Output Y

tr

10 %

90 %

1.3 V

tPLH

tf

90 %

1.3 V

10 %

tPHL

1.3 V

10 %

90 %

90 %

1.3 V

10 %

tTLH

tTHL

VCC

0V

VOH

VOL

• Waveform – 2

tf

90 %

Input G

1.3 V

10 %

tZL

tr

10 %

90 %

1.3 V

tLZ

Waveform – A

Waveform – B

1.3 V

tZH

1.3 V

10 %

tHZ

90 %

VCC

0V

VOH

VOL

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 4 of 6

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