HD74BC240ATELL Просмотр технического описания (PDF) - Renesas Electronics

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HD74BC240ATELL

Octal Buffers/Line Drivers With 3 State Outputs

Renesas Electronics 

HD74BC240A

Waveforms-1

tf

tr

Input A

90%

1.5 V

90%

3V

1.5 V

10%

10%

0V

tPLH

t PHL

VOH

Output Y

1.5 V

1.5 V

VOL

Notes: 1. tr = 2.5 ns, tf = 2.5 ns

2. Input waveform: PRR =1 MHz, duty cycle 50%

Waveforms-2

Input G

Waveform–A

tf

90%

1.5 V

10%

t ZL

1.5 V

t ZH

tr

90%

1.5 V

10%

t LZ

VOL + 0.3 V

t HZ

3V

0V

3.5 V

VOL

Waveform–B

1.5 V

VOH – 0.3 V

VOH

Notes:

0V

1. tr = 2.5 ns, tf = 2.5 ns

2. Input waveform: PRR = 1 MHz, duty cycle 50%

3. Waveform-A shows input conditions such that the output is “L” level when enable by the

output control.

4. Waveform-B shows input conditions such that the output is “H” level when enable by the

output control.

Rev.3.00, Jul.16.2004, page 6 of 8

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