PCA9546APW,112 NXP Semiconductors, PCA9546APW,112 Datasheet - Page 8

• Manufacturer Part Number: PCA9546APW,112
• Description: IC I2C SWITCH 4CH 16TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9546APW,112

• Package / Case: 16-TSSOP
• Applications: 4-Channel I²C Switcher
• Interface: I²C, SMBus
• Voltage - Supply: 2.3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Product: Multiplexer
• Number Of Lines (input / Output): 4.0 / 1.0
• Propagation Delay Time: 0.3 ns
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Input Lines: 4.0
• Number Of Output Lines: 1.0
• Power Dissipation: 400 mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-5026; 935275813112; PCA9546APW; PCA9546APW,112; PCA9546APW

NXP Semiconductors
7. Characteristics of the I
PCA9546A_5
Product data sheet
7.1 Bit transfer
7.2 START and STOP conditions
7.3 System configuration
More Information can be found in Application Note AN262: PCA954X family of I
multiplexers and switches .
The I
lines are a serial data line (SDA) and a serial clock line (SCL). Both lines must be
connected to a positive supply via a pull-up resistor when connected to the output stages
of a device. Data transfer may be initiated only when the bus is not busy.
One data bit is transferred during each clock pulse. The data on the SDA line must remain
stable during the HIGH period of the clock pulse as changes in the data line at this time
will be interpreted as control signals (see
Both data and clock lines remain HIGH when the bus is not busy. A HIGH-to-LOW
transition of the data line while the clock is HIGH is defined as the START condition (S).
A LOW-to-HIGH transition of the data line while the clock is HIGH is defined as the STOP
condition (P) (see
A device generating a message is a ‘transmitter’, a device receiving is the ‘receiver’. The
device that controls the message is the ‘master’ and the devices which are controlled by
the master are the ‘slaves’ (see
Fig 8.
Fig 9.
2
C-bus is for 2-way, 2-line communication between different ICs or modules. The two
SDA
SCL
Bit transfer
Definition of START and STOP conditions
START condition
2
SDA
SCL
Figure
C-bus
S
Rev. 05 — 2 July 2009
9).
Figure
data valid
data line
stable;
10).
Figure
allowed
change
of data
8).
4-channel I
2
C-bus switch with reset
STOP condition
PCA9546A
mba607
P
© NXP B.V. 2009. All rights reserved.
mba608
2
C/SMBus
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