Datasheet

PCAL6416A All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 6 — 9 October 2014 8 of 61
NXP Semiconductors
PCAL6416A
Low-voltage translating 16-bit I
2
C-bus/SMBus I/O expander
6. Voltage translation
Table 4 shows how to set up V
DD
levels for the necessary voltage translation between the
I
2
C-bus and the PCAL6416A.
Table 4. Voltage translation
V
DD(I2C-bus)
(SDA and SCL of I
2
C master) V
DD(P)
(Port P)
1.8V 1.8V
1.8V 2.5V
1.8V 3.3V
1.8V 5V
2.5V 1.8V
2.5V 2.5V
2.5V 3.3V
2.5V 5V
3.3V 1.8V
3.3V 2.5V
3.3V 3.3V
3.3V 5V
5V 1.8V
5V 2.5V
5V 3.3V
5V 5V