SN74LVC1T45-Q1
www.ti.com .......................................................................................................................................... SCES677A –SEPTEMBER 2006–REVISED AUGUST 2009
APPLICATION INFORMATION
Figure 2 shows an example of the SN74LVC1T45 being used in a unidirectional logic level-shifting application.
VCC1
VCC1
VCC2
VCC2
1
2
3
6
5
4
SYSTEM-1
SYSTEM-2
PIN
1
NAME
VCCA
GND
A
FUNCTION
VCC1
GND
OUT
DESCRIPTION
SYSTEM-1 supply voltage (1.65 V to 5.5 V)
Device GND
2
3
Output level depends on VCC1 voltage.
Input threshold value depends on VCC2 voltage.
GND (low level) determines B-port to A-port direction.
SYSTEM-2 supply voltage (1.65 V to 5.5 V)
4
B
IN
5
DIR
VCCB
DIR
6
VCC2
Figure 2. Unidirectional Logic Level-Shifting Application
Copyright © 2006–2009, Texas Instruments Incorporated
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Product Folder Link(s): SN74LVC1T45-Q1
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