MC74HC238ADG datasheet(4/9 Pages) ONSEMI

Part #	MC74HC238ADG

Description	1-of-8 Decoder/ Demultiplexer

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MC74HC238A

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4

DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)

Symbol

Parameter

Test Conditions

VCC

V

Guaranteed Limit

Unit

−55°C to 25°C

v 85°C

v 125°C

VIH

Minimum High−Level Input

Voltage

Vout = 0.1 V or VCC – 0.1 V

|Iout| v 20 mA

2.0

3.0

4.5

6.0

1.5

2.1

3.15

4.2

1.5

2.1

3.15

4.2

1.5

2.1

3.15

4.2

V

VIL

Maximum Low−Level Input

Voltage

Vout = 0.1 V or VCC – 0.1 V

|Iout| v 20 mA

2.0

3.0

4.5

6.0

0.5

0.9

1.35

1.8

0.5

0.9

1.35

1.8

0.5

0.9

1.35

1.8

V

VOH

Minimum High−Level Output

Voltage

Vin = VIH or VIL

|Iout| v 20 mA

2.0

4.5

6.0

1.9

4.4

5.9

1.9

4.4

5.9

1.9

4.4

5.9

V

Vin = VIH or VIL |Iout| v 2.4 mA

|Iout| v 4.0 mA

|Iout| v 5.2 mA

3.0

4.5

6.0

2.48

3.98

5.48

2.34

3.84

5.34

2.20

3.70

5.20

VOL

Maximum Low−Level Output

Voltage

Vin = VIH or VIL

|Iout| v 20 mA

2.0

4.5

6.0

0.1

V

Vin = VIH or VIL |Iout| v 2.4 mA

|Iout| v 4.0 mA

|Iout| v 5.2 mA

3.0

4.5

6.0

0.26

0.33

0.40

Iin

Maximum Input Leakage

Current

Vin = VCC or GND

6.0

± 0.1

± 1.0

mA

ICC

Maximum Quiescent Supply

Current (per Package)

Vin = VCC or GND

Iout = 0 mA

6.0

4

40

160

mA

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6.0 ns)

Symbol

Parameter

VCC

V

Guaranteed Limit

Unit

−55°C to 25°C

v 85°C

v 125°C

tPLH,

tPHL

Maximum Propagation Delay, Input A to Output Y

(Figures 3 and 6)

2.0

3.0

4.5

6.0

135

90

27

23

170

125

34

29

205

165

41

35

ns

tPLH,

tPHL

Maximum Propagation Delay, CS1 to Output Y

(Figures 4 and 6)

2.0

3.0

4.5

6.0

110

85

22

19

140

100

28

24

165

125

33

28

ns

tPLH,

tPHL

Maximum Propagation Delay, CS2 or CS3 to Output Y

(Figures 5 and 6)

2.0

3.0

4.5

6.0

120

90

24

20

150

120

30

26

180

150

36

31

ns

tTLH,

tTHL

Maximum Output Transition Time, Any Output

(Figures 4 and 6)

2.0

3.0

4.5

6.0

75

30

15

13

95

40

19

16

110

55

22

19

ns

Cin

Maximum Input Capacitance

−

10

pF

CPD

Power Dissipation Capacitance (Per Package)*

Typical @ 25°C, VCC = 5.0 V

pF

55

* Used to determine the no−load dynamic power consumption: PD = CPD VCC2f + ICC VCC.

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