Nexperia

74HC138; 74HCT138

3-to-8 line decoder/demultiplexer; inverting

8. Recommended operating conditions

Table 5. Recommended operating conditions

Voltages are referenced to GND (ground = 0 V)

74HC138

74HCT138

Symbol Parameter

Conditions

Min

Typ

Max

Min

Typ

Max

Unit

VCC

supply voltage

2.0

5.0

6.0

4.5

5.0

5.5

V

VI

input voltage

0

-

VCC

0

-

VCC V

VO

output voltage

0

-

VCC

0

-

VCC V

Tamb

ambient temperature

-40

+25

+125

-40

+25

+125 °C

VCC = 2.0 V

-

-

625

-

-

-

ns/V

VCC = 4.5 V

-

1.67

139

-

1.67

139

ns/V

Δt/ΔV

input transition rise and fall rate

VCC = 6.0 V

-

-

83

-

-

-

ns/V

9. Static characteristics

Table 6. Static characteristics

At recommended operating conditions; voltages are referenced to GND (ground = 0 V).

Tamb = 25 °C

Tamb = -40 °C

to +85 °C

Tamb = -40 °C

to +125 °C

Symbol Parameter

Conditions

Min

Typ Max

Min

Max

Min

Max

Unit

74HC138

VCC = 2.0 V

1.5

1.2

-

1.5

-

1.5

-

V

VCC = 4.5 V

3.15

2.4

-

3.15

-

3.15

-

V

VIH

HIGH-level

input voltage

VCC = 6.0 V

4.2

3.2

-

4.2

-

4.2

-

V

VCC = 2.0 V

-

0.8

0.5

-

0.5

-

0.5

V

VCC = 4.5 V

-

2.1

1.35

-

1.35

-

1.35 V

VIL

LOW-level

input voltage

VCC = 6.0 V

-

2.8

1.8

-

1.8

-

1.8

V

VI = VIH or VIL

IO = -20 μA; VCC = 2.0 V

1.9

2.0

-

1.9

-

1.9

-

V

IO = -20 μA; VCC = 4.5 V

4.4

4.5

-

4.4

-

4.4

-

V

IO = -20 μA; VCC = 6.0 V

5.9

6.0

-

5.9

-

5.9

-

V

IO = -4.0 mA; VCC = 4.5 V

3.98 4.32

-

3.84

-

3.7

-

V

VOH

HIGH-level

output voltage

IO = -5.2 mA; VCC = 6.0 V

5.48 5.81

-

5.34

-

5.2

-

V

VI = VIH or VIL

IO = 20 μA; VCC = 2.0 V

-

0

0.1

-

0.1

-

0.1

V

IO = 20 μA; VCC = 4.5 V

-

0

0.1

-

0.1

-

0.1

V

IO = 20 μA; VCC = 6.0 V

-

0

0.1

-

0.1

-

0.1

V

IO = 4.0 mA; VCC = 4.5 V

-

0.15 0.26

-

0.33

-

0.4

V

VOL

LOW-level

output voltage

IO = 5.2 mA; VCC = 6.0 V

-

0.16 0.26

-

0.33

-

0.4

V

II

input leakage

current

VI = VCC or GND; VCC = 6.0 V

-

-

±0.1

-

±1.0

-

±1.0 μA

ICC

supply current VI = VCC or GND; IO = 0 A;

VCC = 6.0 V

-

-

8.0

-

80

-

160

μA

CI

input

capacitance

-

3.5

-

pF

74HC_HCT138

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© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 9 — 13 August 2021

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