Nexperia

74LVC138A

3-to-8 line decoder/demultiplexer; inverting

10.1. Waveforms and test circuit

mna373

An, E3

input

Yn

output

tPHL

tTHL

tPLH

GND

VCC

VM

VM

VOH

VOL

tTLH

Measurement points are given in Table 8

VOL and VOH are typical output voltage levels that occur with the output load.

Fig. 7. The inputs An, E3 to outputs Yn propagation delays

mna374

E1, E2

input

Yn

output

tPHL

tPLH

GND

VCC

VM

VM

VOH

VOL

tTHL

tTLH

Measurement points are given in Table 8

VOL and VOH are typical output voltage levels that occur with the output load.

Fig. 8. The inputs En to outputs Yn propagation delays

Table 8. Measurement points

Supply voltage

Input

Output

VCC

VI

VM

VM

1.2 V

VCC

0.5 × VCC

0.5 × VCC

1.65 V to 1.95 V

VCC

0.5 × VCC

0.5 × VCC

2.3 V to 2.7 V

VCC

0.5 × VCC

0.5 × VCC

2.7 V

2.7 V

1.5 V

1.5 V

3.0 V to 3.6 V

2.7 V

1.5 V

1.5 V

74LVC138A

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Product data sheet

Rev. 8 — 20 September 2021

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