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APPLICATION INFORMATION

SYSTEM-1

SYSTEM-2

1

2

3

4

8

7

6

5

SN74LVC2T45

DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER

WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SCES516I – DECEMBER 2003 – REVISED MARCH 2007

The following shows an example of the SN74LVC2T45 being used in a unidirectional logic level-shifting

application.

PIN

NAME

FUNCTION

DESCRIPTION

1

SYSTEM-1 supply voltage (1.65 V to 5.5 V)

2

A1

OUT1

3

A2

OUT2

4

GND

GND

Device GND

5

DIR

DIR

GND (low level) determines B-port to A-port direction.

6

B2

IN2

7

B1

IN1

8

SYSTEM-2 supply voltage (1.65 V to 5.5 V)

Figure 2. Unidirectional Logic Level-Shifting Application

15

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