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| MC74LCX244_12 Datasheet, PDF (5/9 Pages) ON Semiconductor – Low-Voltage CMOS Octal Buffer | |||
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MC74LCX244
DYNAMIC SWITCHING CHARACTERISTICS
Symbol
Characteristic
Condition
TA = +25°C
Min Typ Max
Units
VOLP Dynamic LOW Peak Voltage (Note 4) VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V
0.8
V
VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V
0.6
VOLV Dynamic LOW Valley Voltage (Note 4) VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V
â0.8
V
VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V
â0.6
4. Number of outputs defined as ânâ. Measured with ânâ1â outputs switching from HIGHâtoâLOW or LOWâtoâHIGH. The remaining output is
measured in the LOW state.
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
CIN
COUT
CPD
Input Capacitance
Output Capacitance
Power Dissipation Capacitance
Condition
VCC = 3.3 V, VI = 0 V or VCC
VCC = 3.3 V, VI = 0 V or VCC
10 MHz, VCC = 3.3 V, VI = 0 V or VCC
Typical
7
8
25
Units
pF
pF
pF
1Dn, 2Dn
1On, 2On
VCC
Vmi
Vmi
tPLH
Vmo
0V
tPHL
VOH
Vmo
VOL
WAVEFORM 1 â PROPAGATION DELAYS
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
1OE, 2OE
1On, 2On
1On, 2On
Vmi
Vmi
tPZH
tPHZ
Vmo
VCC
0V
VCC
VOH - 0.3 V
â0V
tPZL
tPLZ
â 3.0 V
Vmo
VOL + 0.3 V
GND
WAVEFORM 2 â OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
Figure 3. AC Waveforms
Symbol
Vmi
Vmo
VHZ
VLZ
3.3 V ± 0.3 V
1.5 V
1.5 V
VOL + 0.3 V
VOH â 0.3 V
VCC
2.7 V
1.5 V
1.5 V
VOL + 0.3 V
VOH â 0.3 V
2.5 V ± 0.2 V
VCC/2
VCC/2
VOL + 0.15 V
VOH â 015 V
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