PCA9544AD,112 NXP Semiconductors, PCA9544AD,112 Datasheet - Page 11

• Manufacturer Part Number: PCA9544AD,112
• Description: IC I2C MUX 4CH 20SOIC
• Manufacturer: NXP Semiconductors

Specifications of PCA9544AD,112

• Applications: 4-Channel I²C Multiplexer
• Interface: I²C
• Voltage - Supply: 2.3 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Package / Case: 20-SOIC (7.5mm Width)
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935275899112; PCA9544AD; PCA9544AD

NXP Semiconductors
PCA9544A_4
Product data sheet
7.5 Bus transactions
Fig 12. Write control register
Fig 13. Read control register
SDA
SDA
START condition
START condition
S
S
1
1
1
1
slave address
slave address
1
1
Rev. 04 — 15 June 2009
0
0
A2
A2
A1
A1
A0
A0
4-channel I
R/W
R/W
0
1
A
A
acknowledge
from slave
acknowledge
from slave
INT
X
3
2
C-bus multiplexer with interrupt logic
INT
X
2
INT
X
1
control register
control register
INT
X
0
X
X
PCA9544A
B2
B2
no acknowledge
B1
acknowledge
B1
© NXP B.V. 2009. All rights reserved.
from master
from slave
STOP condition
STOP condition
B0
B0
last byte
002aae299
002aae300
NA
A
11 of 26
P
P