Nexperia

74LVC257A

Quad 2-input multiplexer with 5 V tolerant inputs/outputs; 3-state

10.1. Waveforms and test circuit

mna869

S, nl0, nl1 input

nY output

tPHL

tPLH

GND

VCC

VM

VM

VOH

VOL

Measurement points are given in Table 8.

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

Fig. 7. Input (S, nI0 and nI1) to output (nY) propagation delays

mna870

tPLZ

tPHZ

output

disabled

output

enabled

VY

VX

output

enabled

output

LOW-to-OFF

OFF-to-LOW

output

HIGH-to-OFF

OFF-to-HIGH

OE input

VOL

VOH

VCC

VI

VM

GND

GND

tPZL

tPZH

VM

VM

Measurement points are given in Table 8.

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

Fig. 8. 3-state enable and disable times

Table 8. Measurement points

Supply voltage

Input

Output

VCC

VI

VM

VM

VX

VY

1.2 V

VCC

0.5 × VCC

0.5 × VCC

VOL + 0.15 V

VOH - 0.15 V

1.65 V to 1.95 V

VCC

0.5 × VCC

0.5 × VCC

VOL + 0.15 V

VOH - 0.15 V

2.3 V to 2.7 V

VCC

0.5 × VCC

0.5 × VCC

VOL + 0.15 V

VOH - 0.15 V

2.7 V

2.7 V

1.5 V

1.5 V

VOL + 0.3 V

VOH - 0.3 V

3.0 V to 3.6 V

2.7 V

1.5 V

1.5 V

VOL + 0.3 V

VOH - 0.3 V

74LVC257A

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© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 8 — 31 August 2021

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