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MC74LCX240 Datasheet(PDF) 5 Page - ON Semiconductor

Part No. MC74LCX240
Description  Low−Voltage CMOS Octal Buffer With 5 V−Tolerant Inputs and Outputs (3−State, Inverting)
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

MC74LCX240 Datasheet(HTML) 5 Page - ON Semiconductor

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MC74LCX240
http://onsemi.com
5
WAVEFORM 1 − PROPAGATION DELAYS
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
2.7 V
0 V
VOH
VOL
1Dn, 2Dn
1On, 2On
tPLH
tPHL
WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
2.7 V
0 V
≈ 0 V
1OE, 2OE
1On, 2On
tPZH
≈ 3.0 V
tPHZ
tPZL
tPLZ
1On, 2On
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
Figure 3. Waveforms
1.5 V
VCC
VOH − 0.3 V
VOL + 0.3 V
GND
OPEN
PULSE
GENERATOR
RT
DUT
VCC
RL
R1
CL
6V
GND
TEST
SWITCH
tPLH, tPHL
Open
tPZL, tPLZ
6V
Open Collector/Drain tPLH and tPHL
6V
tPZH, tPHZ
GND
CL = 50pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 500W or equivalent
RT = ZOUT of pulse generator (typically 50W)
Figure 4. Test Circuit


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