SN74LVC2T45 Datasheet, PDF (15/22 Pages) Texas Instruments – DUAL BIT DUAL SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SN74LVC2T45
DUALĆBIT DUALĆSUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3ĆSTATE OUTPUTS
SCES516E − DECEMBER 2003 − REVISED MAY 2004
APPLICATION INFORMATION
The following circuit is an example of the SN74LVC2T45 being used in a unidirectional logic level-shifting application.
VCC1
VCC2
VCC1
VCC1
1
8
2
7
3
6
4
5
VCC2
VCC2
SYSTEM-1
SYSTEM-2
PIN
NAME
FUNCTION
DESCRIPTION
1
VCCA
2
A1
VCC1
OUT1
SYSTEM-1 supply voltage (1.65 V to 5.5 V)
Output level depends on VCC1 voltage.
3
A2
OUT2
Output level depends on VCC1 voltage.
4
GND
GND
Device GND
5
DIR
DIR
The GND (low-level) determines B port to A port direction.
6
B2
IN2
Input threshold value depends on VCC2 voltage.
7
B1
8
VCCB
IN1
VCC2
Input threshold value depends on VCC2 voltage.
SYSTEM-2 supply voltage (1.65 V to 5.5 V)
Figure 3. Unidirectional Logic Level-Shifting Application
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