Datasheet

74AVCH2T45 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6 — 2 April 2013 15 of 27
NXP Semiconductors
74AVCH2T45
Dual-bit, dual-supply voltage level translator/transceiver; 3-state
13. Application information
13.1 Unidirectional logic level-shifting application
The circuit given in Figure 9 is an example of the 74AVCH2T45 being used in an
unidirectional logic level-shifting application.
Fig 9. Unidirectional logic level-shifting application
Table 16. Unidirectional logic level-shifting application
Pin Name Function Description
1V
CC(A)
V
CC1
supply voltage of system-1 (0.8 V to 3.6 V)
2 1A OUT1 output level depends on V
CC1
voltage
3 2A OUT2 output level depends on V
CC1
voltage
4 GND GND device GND
5 DIR DIR the GND (LOW level) determines B port to A port direction
6 2B IN2 input threshold value depends on V
CC2
voltage
7 1B IN1 input threshold value depends on V
CC2
voltage
8V
CC(B)
V
CC2
supply voltage of system-2 (0.8 V to 3.6 V)
74AVCH2T45
V
CC(A)
V
CC1
V
CC1
V
CC1
V
CC2
V
CC(B)
1A
system-1
1B
2A 2B
GND DIR
001aag585
1
2
3
4
6
5
8
7
system-2
V
CC2
V
CC2