74lcx646 STMicroelectronics, 74lcx646 Datasheet - Page 8

• Manufacturer Part Number: 74lcx646
• Description: Low Volt. Cmos Octal Bus Transceiver/register With 5 Volt Tolerant Inputs And Outputs 3-state
• Manufacturer: STMicroelectronics

M74LCX646
Figure 5: Test Circuit
C
R
R
Figure 6: Waveform - Propagation Delays, SAB, SBA, An, Bn, Times (f=1MHz; 50% duty cycle)
8/16
t
t
t
PLH
PZL
PZH
L
L
T
= 50 pF or equivalent (includes jig and probe capacitance)
= R1 = 500 or equivalent
= Z
, t
, t
, t
OUT
PLZ
PHL
PHZ
of pulse generator (typically 50 )
TEST
SWITCH
Open
GND
6V