English
Language : 

HD74LV244A Datasheet, PDF (10/15 Pages) Hitachi Semiconductor – Octal Buffers / Drivers with 3-state Outputs
HD74LV244A
Test Circuit
VCC
Input
Pulse generator
Zout = 50 Ω
VCC
1OE, 2OE
Output
1Y1 to 2Y4
1A1 to 2A4
1 kΩ S1
CL =
15 or 50 pF
OPEN
GND
VCC
TEST
tPLH /tPHL
t ZH/tHZ
tZL /tLZ
S1
OPEN
GND
VCC
Note: CL includes the probe and jig capacitance.
10