MC74LCX646 Datasheet, PDF (6/10 Pages) Motorola, Inc – LOW-VOLTAGE CMOS OCTAL TRANSCEIVER/ REGISTERED TRANSCEIVER

MC74LCX646
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
CIN
CI/O
CPD
Input Capacitance
Input/Output Capacitance
Power Dissipation Capacitance
Condition
Typical
Unit
VCC = 3.3V, VI = 0V or VCC
7
pF
VCC = 3.3V, VI = 0V or VCC
8
pF
10MHz, VCC = 3.3V, VI = 0V or VCC
25
pF
2.7V
An, Bn,
1.5V
SBA, SAB
0V
tPLH, tPHL
VOH
Bn, An
1.5V
VOL
WAVEFORM 1 – SAB to B and SBA to A, An to Bn PROPAGATION DELAYS
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
OE
1.5V
DIR
tPZH
An, Bn
1.5V
tPHZ
1.5V
2.7V
0V
VOH – 0.3V
≈ 0V
tPZL
tPLZ
≈ 3.0V
An, Bn
1.5V
VOL + 0.3V
WAVEFORM 2 – OE/DIR to An/Bn OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5ns, 10% to 90%; f = 1MHz; tW = 500ns
Figure 1. AC Waveforms
MOTOROLA
6
LCX DATA
BR1339 — REV 3