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HD74CBT1G125
Rev.1.00 Apr 07, 2006 page 5 of 6
Waveforms – 1
Input
10 %
1.5 V 1.5 V
90 %
t
r
90 %
3 V
GND
10 %
t
f
Output
1.5 V 1.5 V
t
PLH
V
t
PHL
OH
V
OL
Waveforms – 2
Waveform - B
Notes: 1. All input pulses are supplied by generators having the following characteristics :
PRR ≤ 10 MHz, Z
O
= 50 Ω, t
r
≤ 2.5 ns, t
f
≤ 2.5 ns.
2. Waveform - A is for an output with internal conditions such that the output is low except
when disabled by the output control.
3. Waveform - B is for an output with internal conditions such that the output is high except
when disabled by the output control.
4. The output are measured one at a time with one transition per measurement.
Waveform - A
V
OH
V
OL
V + 0.3 V
OL
V - 0.3 V
OH
Output
Control
10 % 10 %
1.5 V 1.5 V
90 %
t
f
90 %
3 V
3.5
V
GND
GND
t
r
1.5 V
1.5 V
t
HZ
t
LZ
t
ZH
t
ZL