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MC74VHC138 Datasheet, PDF (5/8 Pages) Motorola, Inc – 3-to-8 Line Decoder
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MC74VHC138
DC ELECTRICAL CHARACTERISTICS
Symbol
Parameter
VCC
Test Conditions (V)
VIH Minimum High--Level
2.0
Input Voltage
3.0
4.5
5.5
VIL Maximum
2.0
Low--Level Input
3.0
Voltage
4.5
5.5
VOH Minimum High--Level VIN = VIH or VIL
2.0
Output Voltage
IOH = -- 50 μA
3.0
VIN = VIH or VIL
4.5
VIN = VIH or VIL
IOH = --4 mA
3.0
IOH = --8 mA
4.5
VOL Maximum
VIN = VIH or VIL
2.0
Low--Level Output IOL = 50 μA
3.0
Voltage
4.5
VIN = VIH or VIL
VIN = VIH or VIL
IOL = 4 mA
3.0
IOL = 8 mA
4.5
IIN Maximum Input
VIN = 5.5 V or
0 to
Leakage Current
GND
5.5
ICC Maximum Quiescent VIN = VCC or GND 5.5
Supply Current
TA = 25°C
Min
Typ Max
1.5
2.1
3.15
3.85
0.5
0.9
1.35
1.65
1.9
2.0
2.9
3.0
4.4
4.5
2.58
3.94
0.0
0.1
0.0
0.1
0.0
0.1
0.36
0.36
± 0.1
4.0
TA = ≤ 85°C
Min Max
1.5
2.1
3.15
3.85
0.5
0.9
1.35
1.65
1.9
2.9
4.4
2.48
3.80
0.1
0.1
0.1
0.44
0.44
± 1.0
40.0
TA = ≤ 125°C
Min Max Unit
1.5
V
2.1
3.15
3.85
0.5
V
0.9
1.35
1.65
1.9
V
2.9
4.4
2.34
3.66
0.1
V
0.1
0.1
0.52
0.52
± 1.0 μA
40.0 μA
AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0ns)
Symbo
l
tPLH,
tPHL
Parameter
Maximum
Propagation Delay,
A to Y
tPLH,
tPHL
Maximum
Propagation Delay,
E3 to Y
tPLH,
tPHL
Maximum
Propagation Delay,
E2 or E1 to Y
CIN Maximum Input
Capacitance
Test Conditions
VCC = 3.3 ± 0.3V CL = 15pF
CL = 50pF
VCC = 5.0 ± 0.5V CL = 15pF
CL = 50pF
VCC = 3.3 ± 0.3V CL = 15pF
CL = 50pF
VCC = 5.0 ± 0.5V CL = 15pF
CL = 50pF
VCC = 3.3 ± 0.3V CL = 15pF
CL = 50pF
VCC = 5.0 ± 0.5V CL = 15pF
CL = 50pF
TA = 25°C
Min Typ Max
8.2 11.4
10.0 15.8
5.7
8.1
7.2 10.1
8.1 12.8
10.6 16.3
5.6
8.1
7.1 10.1
8.2 11.4
10.7 14.9
5.8
8.1
7.3 10.1
4
10
TA = -- 40 to
85°C
Min Max
1.0 13.5
1.0 18.0
1.0
9.5
1.0 11.5
1.0 15.0
1.0 18.5
1.0
9.5
1.0 11.5
1.0 13.5
1.0 17.0
1.0
9.5
1.0 11.5
10
TA = -- 55 to
125°C
Min Max Unit
1.0 13.5 ns
1.0 18.0
1.0
9.5
1.0 11.5
1.0 15.0 ns
1.0 18.5
1.0
9.5
1.0 11.5
1.0 13.5 ns
1.0 17.0
1.0
9.5
1.0 11.5
10 pF
Typical @ 25°C, VCC = 5.0V
CPD
Power Dissipation Capacitance (Note 1)
34
pF
1. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
Average operating current can be obtained by the equation: ICC(OPR) = CPD ¯ VCC ¯ fin + ICC. CPD is used to determine the no--load dynamic
power consumption; PD = CPD ¯ VCC2 ¯ fin + ICC ¯ VCC.
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