HD74BC245A Datasheet, PDF (6/9 Pages) Hitachi Semiconductor – Octal Bus Transceivers With 3 State Outputs

HD74BC245A
Waveforms-1
Input
Output
t_r
tf
90%
90%
3V
1.5 V
1.5 V
10%
t_PLH
10%
0V
t_PHL
V_OH
1.5 V
1.5 V
V_OL
Waveforms-2
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.
Rev.4.00, Jul.16.2004, page 6 of 8