PCAL6408AHKX NXP Semiconductors, PCAL6408AHKX Datasheet - Page 7

• Manufacturer Part Number: PCAL6408AHKX
• Description: Interface - I/O Expanders 8bit I2C/SMBus IO Expander w/Interrupt
• Manufacturer: NXP Semiconductors

Specifications of PCAL6408AHKX

• Maximum Operating Frequency: 100 kHz
• Operating Supply Voltage: 1.65 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: XQFN-16
• Operating Current: 200 mA
• Output Current: 25 mA
• Product Type: I/O Expanders

NXP Semiconductors
6. Voltage translation
7. Functional description
PCAL6408A
Product data sheet
7.1 Device address
Table 4
I
Table 4.
Refer to
The address of the PCAL6408A is shown in
ADDR is the hardware address package pin and is held to either HIGH (logic 1) or LOW
(logic 0) to assign one of the two possible slave addresses. The last bit of the slave
address defines the operation (read or write) to be performed. A HIGH (logic 1) selects a
read operation, while a LOW (logic 0) selects a write operation.
V
1.8 V
1.8 V
1.8 V
1.8 V
2.5 V
2.5 V
2.5 V
2.5 V
3.3 V
3.3 V
3.3 V
3.3 V
5 V
5 V
5 V
5 V
2
Fig 5.
C-bus and the PCAL6408A.
DD(I2C-bus)
shows how to set up V
Figure 1 “Block diagram (positive
PCAL6408A address
Voltage translation
(SDA and SCL of I
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 6 December 2012
Low-voltage translating, 8-bit I
2
0
C master)
DD
1
levels for the necessary voltage translation between the
slave address
0
fixed
0
logic)”.
0
Figure
V
1.8 V
2.5 V
3.3 V
5 V
1.8 V
2.5 V
3.3 V
5 V
1.8 V
2.5 V
3.3 V
5 V
1.8 V
2.5 V
3.3 V
5 V
DD(P)
0
(Port P)
AD
DR
5.
programmable
R/W
002aaf539
2
C-bus/SMBus I/O expander
PCAL6408A
© NXP B.V. 2012. All rights reserved.
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