HD74BC244A Datasheet, PDF (6/8 Pages) Hitachi Semiconductor – Octal Buffers/Line Drivers With 3 State Outputs

HD74BC244A
Waveforms-1
t_r
t_f
3V
90%
90%
Input A
1.5 V
1.5 V
10%
t_PLH
10%
0V
t _PHL
V_OH
Output Y
1.5 V
Notes:
1. t_r = 2.5 ns, t_f = 2.5 ns
2. Input waveform: PRR =1 MHz, duty cycle 50%
1.5 V
V_OL
Waveforms-2
Input G
Waveform–A
t_f
90%
1.5 V
10%
t _ZL
1.5 V
t _ZH
t_r
90%
1.5 V
10%
t _LZ
V_OL + 0.3 V
t _HZ
3V
0V
3.5 V
V_OL
Waveform–B
1.5 V
V_OH – 0.3 V
V_OH
Notes:
0V
1. t_r = 2.5 ns, t_f = 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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