Nexperia

74AXP1T45

1-bit dual supply translating transceiver; 3-state

12. Application information

12.1. Unidirectional logic level-shifting application

The circuit given in Fig. 15 is an example of the 74AXP1T45 being used in an unidirectional logic

level-shifting application.

aaa-029969

74AXP1T45

VCC(A)

VCC1

VCC2

1

6

VCC(B)

VCC1

GND

system-1

2

5 DIR

A

3

4

B

VCC2

system-2

Fig. 15. Unidirectional logic level-shifting application

Table 17. Description unidirectional logic level-shifting application

Pin

Name

Function

Description

1

VCC(A)

VCC1

supply voltage of system-1 (0.9 V to 5.5 V)

2

GND

GND

device GND

3

A

OUT

output level depends on VCC1 voltage

4

B

IN

input threshold value depends on VCC2 voltage

5

DIR

DIR

the GND (LOW level) determines B port to A port direction

6

VCC(B)

VCC2

supply voltage of system-2 (0.9 V to 5.5 V)

74AXP1T45

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© Nexperia B.V. 2022. All rights reserved

Product data sheet

Rev. 2 — 3 February 2022

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