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MC74HC238A_13 Datasheet, PDF (4/9 Pages) ON Semiconductor – 1-of-8 Decoder/ Demultiplexer
MC74HC238A
DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)
Symbol
Parameter
Test Conditions
VCC
Guaranteed Limit
V −55°C to 25°C v 85°C v 125°C Unit
VIH Minimum High−Level Input
Vout = 0.1 V or VCC – 0.1 V
2.0
Voltage
|Iout| v 20 mA
3.0
4.5
6.0
1.5
2.1
3.15
4.2
1.5
1.5
V
2.1
2.1
3.15
3.15
4.2
4.2
VIL Maximum Low−Level Input
Vout = 0.1 V or VCC – 0.1 V
2.0
Voltage
|Iout| v 20 mA
3.0
4.5
6.0
0.5
0.9
1.35
1.8
0.5
0.5
V
0.9
0.9
1.35
1.35
1.8
1.8
VOH Minimum High−Level Output Vin = VIH or VIL
Voltage
|Iout| v 20 mA
2.0
1.9
4.5
4.4
6.0
5.9
1.9
1.9
V
4.4
4.4
5.9
5.9
Vin = VIH or VIL |Iout| v 2.4 mA 3.0
2.48
2.34
2.20
|Iout| v 4.0 mA 4.5
3.98
3.84
3.70
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ |Iout|v5.2mA 6.0
5.48
5.34
5.20
VOL Maximum Low−Level Output Vin = VIH or VIL
2.0
Voltage
|Iout| v 20 mA
4.5
6.0
Iin
Maximum Input Leakage
Current
Vin = VIH or VIL |Iout| v 2.4 mA 3.0
|Iout| v 4.0 mA 4.5
|Iout| v 5.2 mA 6.0
Vin = VCC or GND
6.0
ICC Maximum Quiescent Supply Vin = VCC or GND
6.0
Current (per Package)
Iout = 0 mA
0.1
0.1
0.1
0.26
0.26
0.26
± 0.1
4
0.1
0.1
V
0.1
0.1
0.1
0.1
0.33
0.40
0.33
0.40
0.33
0.40
± 1.0
± 1.0
mA
40
160
mA
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6.0 ns)
Symbol
Parameter
VCC
Guaranteed Limit
V −55°C to 25°C v 85°C v 125°C Unit
tPLH,
tPHL
Maximum Propagation Delay, Input A to Output Y
(Figures 3 and 6)
2.0
135
3.0
90
4.5
27
6.0
23
170
205
ns
125
165
34
41
29
35
tPLH,
tPHL
Maximum Propagation Delay, CS1 to Output Y
(Figures 4 and 6)
2.0
110
3.0
85
4.5
22
6.0
19
140
165
ns
100
125
28
33
24
28
tPLH,
tPHL
Maximum Propagation Delay, CS2 or CS3 to Output Y
(Figures 5 and 6)
2.0
120
3.0
90
4.5
24
6.0
20
150
180
ns
120
150
30
36
26
31
tTLH,
tTHL
Maximum Output Transition Time, Any Output
(Figures 4 and 6)
2.0
75
3.0
30
4.5
15
6.0
13
95
110
ns
40
55
19
22
16
19
Cin Maximum Input Capacitance
−
10
10
10
pF
Typical @ 25°C, VCC = 5.0 V
CPD Power Dissipation Capacitance (Per Package)*
55
pF
* Used to determine the no−load dynamic power consumption: PD = CPD VCC2f + ICC VCC.
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