74LVC_LVCH8T245

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Product data sheet

Rev. 3 — 12 December 2011

21 of 28

Nexperia

74LVC8T245; 74LVCH8T245

8-bit dual supply translating transceiver; 3-state

13. Application information

13.1 Unidirectional logic level-shifting application

The circuit given in Figure 14 is an example of the 74LVC8T245; 74LVCH8T245 being

used in an unidirectional logic level-shifting application.

Schematic given for one channel.

Fig 14. Unidirectional logic level-shifting application

Table 15.

Description unidirectional logic level-shifting application

Name

Function

Description

supply voltage of system-1 (1.2 V to 5.5 V)

GND

GND

device GND

A

OUT

B

IN

DIR

DIR

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

supply voltage of system-2 (1.2 V to 5.5 V)

OE

OE

The GND (LOW level) enables the output ports

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74LVC8T245

74LVCH8T245

system-1

system-2

GND

DIR

Bn

OE

An