HD74LVCZ240A
Test Circuit
VCC
Input
Pulse generator
Zout = 50 Ω
VCC
1G, 2G
Output
1Y1 to 2Y4
1A1 to 2A4
C L=
50 pF
500 Ω S1
450 Ω
50 Ω Scope
OPEN
*1 See
under table
GND
Symbol
tPLH / t PHL
tZH/ t HZ
tZL / t LZ
S1
Vcc=2.7V,
3.3±0.3V
Vcc=5.0±0.5V
OPEN
OPEN
GND
6V
GND
2×VCC
Note: 1. CL includes probe and jig capacitance.
Rev.3.00 Jul. 30, 2004 page 5 of 8