MC74LCX543 Motorola, MC74LCX543 Datasheet - Page 6

• Manufacturer Part Number: MC74LCX543
• Description: LOW-VOLTAGE CMOS OCTAL LATCHING TRANSCEIVER
• Manufacturer: Motorola

MC74LCX543
MOTOROLA
NEGATIVE
PULSE
POSITIVE
PULSE
WAVEFORM 3 – INPUT PULSE DEFINITION
t R = t F = 2.5ns, 10% to 90% of 0V to 2.7V
1.5V
1.5V
GENERATOR
PULSE
t w
t w
C L = 50pF or equivalent (Includes jig and probe capacitance)
R L = R 1 = 500 or equivalent
R T = Z OUT of pulse generator (typically 50 )
t PLH , t PHL
t PZL , t PLZ
Open Collector/Drain t PLH and t PHL
t PZH , t PHZ
Figure 2. AC Waveforms
1.5V
1.5V
R T
Figure 3. Test Circuit
TEST
V CC
DUT
6
or Bn
or Bn
or LExx
WAVEFORM 4 – Enable to A or B PROPAGATION DELAYS, Enable MINIMUM
An
An
Exx
t R = t F = 2.5ns, 10% to 90%; f = 1MHz; t W = 500ns except when noted
(continued)
PULSE WIDTH, A or B to Enable SETUP AND HOLD TIMES
1.5V
C L
SWITCH
Open
GND
6V
6V
R L
R 1
t PLH , t PHL
1.5V
t w
t s
6V
OPEN
GND
1.5V
BR1339 — REV 3
t h
LCX DATA
1.5V
2.7V
0V
2.7V
0V
V OH
V OL