SN74LVC2T45-Q1 Datasheet, PDF (15/23 Pages) Texas Instruments – DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SN74LVC2T45-Q1
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APPLICATION INFORMATION
SCES818 – SEPTEMBER 2010
The following shows an example of the SN74LVC2T45-Q1 being used in a unidirectional logic level-shifting
application.
V_CC1
V_CC2
V_CC1
V_CC1
1
8
2
7
3
6
4
5
V_CC2
V_CC2
SYSTEM-1
SYSTEM-2
PIN
NAME
FUNCTION
DESCRIPTION
1
V_CCA
2
A1
3
A2
4
GND
V_CC1
OUT1
OUT2
GND
SYSTEM-1 supply voltage (1.65 V to 5.5 V)
Output level depends on V_CC1 voltage.
Output level depends on V_CC1 voltage.
Device GND
5
DIR
DIR
GND (low level) determines B-port to A-port direction.
6
B2
7
B1
8
V_CCB
IN2
IN1
V_CC2
Input threshold value depends on V_CC2 voltage.
Input threshold value depends on V_CC2 voltage.
SYSTEM-2 supply voltage (1.65 V to 5.5 V)
Figure 2. Unidirectional Logic Level-Shifting Application
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