HD74BC573A Datasheet, PDF (6/9 Pages) Hitachi Semiconductor – Octal D Type Transparent Latches With 3 State Outputs

HD74BC573A
Waveforms-3
t_r
t_f
3V
90% 90%
Input
1.5 V
1.5 V
LE
10%
t_w
10%
0V
t_s
t_h
3V
Input
D
1.5 V
1.5 V
0V
Notes: 1. t_r = 2.5 ns, t_f = 2.5 ns
2. Input waveform: PRR =1 MHz, duty cycle 50%
Waveforms-4
Output
Control
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.3.00, Jul.16.2004, page 6 of 8