HD74AC HITACHI [Hitachi Semiconductor], HD74AC Datasheet - Page 41

• Manufacturer Part Number: HD74AC
• Description: HD74AC Series Common Information
• Manufacturer: HITACHI [Hitachi Semiconductor]

Design Considerations
40
0.0 V
Key
This figure shows traces taken on a test fixture designed to
exaggerate the amplitude of crosstalk pulses.
Figure 12 Reverse Crosstalk on PCB Traces
V
Active Driver
Forward Crosstalk
Active Receiver
CC
Figure 13 High Noise Margin
30%
Gnd
Time (ns) (5.0 ns/div)
Vertical Scale
4
3
2
1
0
1.0 V/Div
0.2 V/Div
1.0 V/Div
0 5 10 15 20 25
Volts from V
Pulse Width (ns)
CC
Horizontal Scale
HAZARD
5.0 ns/Div
5.0 ns/Div
50 ns/Div
SAFE
30 35 40 45 50
V
CC
= 5.0 V