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HD74BC564A

Octal D Type Flip Flops With 3 State Outputs

Hitachi -> Renesas Electronics 

HD74BC564A

Waveforms-3

Output

Control

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.

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