74LVC245AD Просмотр технического описания (PDF) - NXP Semiconductors.

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производитель

74LVC245AD

Octal bus transceiver; 3-state

NXP Semiconductors. 

Nexperia

11. AC waveforms

74LVC245A; 74LVCH245A

Octal bus transceiver; 3-state

VI

An, Bn input

GND

VOH

tPLH

Bn, An output

VOL

VM

VM

VM

tPHL

VM

mna176

Fig 5.

See Table 8 for measurement points

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

Input (An, Bn) to output (Bn, An) propagation delays and output transition times

VI

OE input

GND

VCC

output

LOW-to-OFF

OFF-to-LOW

VOL

VOH

output

HIGH-to-OFF

OFF-to-HIGH

GND

VM

t PLZ

t PZL

t PHZ

VX

VY

VM

t PZH

VM

outputs

enabled

outputs

disabled

outputs

enabled

mna367

Fig 6.

See Table 8 for measurement points

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

Enable and disable times

Table 8. Measurement points

Supply voltage

VCC

1.2 V

1.65 V to 1.95 V

2.3 V to 2.7 V

2.7 V

VM

0.5  VCC

0.5  VCC

0.5  VCC

1.5 V

3.0 V to 3.6 V

1.5 V

Input

VI

VCC

VCC

VCC

2.7 V

2.7 V

tr = tf

 2.5 ns

 2.5 ns

 2.5 ns

 2.5 ns

 2.5 ns

VX

VOL + 0.15 V

VOL + 0.15 V

VOL + 0.15 V

VOL + 0.3 V

VOL + 0.3 V

VY

VOH  0.15 V

VOH  0.15 V

VOH  0.15 V

VOH  0.3 V

VOH  0.3 V

74LVC_LVCH245A

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 8 — 28 June 2013

© Nexperia B.V. 2017. All rights reserved

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