MC74LVX4245 Motorola, MC74LVX4245 Datasheet - Page 7

• Manufacturer Part Number: MC74LVX4245
• Description: LOW-VOLTAGE CMOS
• Manufacturer: Motorola

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LVX Data — Low–Voltage CMOS Logic
BR1492 — Rev 0
4
GENERATOR
PULSE
OE, T/R
An, Bn
Bn, An
An, Bn
An, Bn
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 PZH , t PHZ
t PZL , t PLZ
50% V CC
WAVEFORM 2 – OUTPUT ENABLE AND DISABLE TIMES
t PZH
t PZL
t PLH
t R = t F = 2.5ns, 10% to 90%; f = 1MHz; t W = 500ns
t R = t F = 2.5ns, 10% to 90%; f = 1MHz; t W = 500ns
WAVEFORM 1 – PROPAGATION DELAYS
Figure 6. AC Waveforms
50% V CC
R T
Figure 7. Test Circuit
TEST
50% V CC
50% V CC
V CC
DUT
50% V CC
7
t PHZ
t PLZ
50% V CC
50% V CC
C L
50% V CC
t PHL
SWITCH
2
Open
R L
V CC
R 1
V OL + 0.3V
GND
V CC
0V
V OH
V OL
V CCA
0V
V CC
V OH – 0.3V
V CC
0V
2 V CC
OPEN
MC74LVX4245
MOTOROLA