PCA9543A Datasheet, PDF (1/20 Pages) Texas Instruments – TWO-CHANNEL I2C-BUS SWITCH WITH INTERRUPT LOGIC AND RESET

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FEATURES
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• 1-of-2 Bidirectional Translating Switches
• I²C Bus and SMBus Compatible
• Two Active-Low Interrupt Inputs
• Active-Low Interrupt Output
• Active-Low Reset Input
• Two Address Pins Allowing up to Four
Devices on the I²C Bus
• Channel Selection Via I²C Bus, in Any
Combination
• Power Up With All Switch Channels
Deselected
• Low r_on Switches
• Allows Voltage-Level Translation Between
1.8-V, 2.5-V, 3.3-V, and 5-V Buses
• No Glitch on Power Up
D PACKAGE
(TOP VIEW)
A0 1
A1 2
RESET 3
INT0 4
SD0 5
SC0 6
GND 7
14
V
CC
13 SDA
12 SCL
11 _INT
10 SC1
9 SD1
8 INT1
PCA9543A
TWO-CHANNEL I²C-BUS SWITCH
WITH INTERRUPT LOGIC AND RESET
SCPS169 – SEPTEMBER 2007
• Supports Hot Insertion
• Low Standby Current
• Operating Power-Supply Voltage Range of
2.3 V to 5.5 V
• 5-V Tolerant Inputs
• 0 to 400-kHz Clock Frequency
• Latch-Up Performance Exceeds 100 mA Per
JESD78
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
A0 1
A1 2
RESET 3
INT0 4
SD0 5
SC0 6
GND 7
PW PACKAGE
(TOP VIEW)
14
V
CC
13 SDA
12 SCL
11 _INT
10 SC1
9 SD1
8 INT1
DESCRIPTION/ORDERING INFORMATION
The PCA9543A is a bidirectional translating switch controlled by the I²C bus. The SCL/SDA upstream pair fans
out to two downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can be
selected, determined by the contents of the programmable control register. Two interrupt inputs (INT0–INT1),
one for each of the downstream pairs, are provided. One interrupt output (INT) acts as an AND of the two
interrupt inputs.
T_A
–40°C to 85°C
ORDERING INFORMATION
PACKAGE ^{(1) (2)}
ORDERABLE PART NUMBER
SOIC – D
Tube of 50
Reel of 2500
PCA9543AD
PCA9543ADR
TSSOP – PW
Tube of 90
Reel of 2000
PCA9543APW
PCA9543APWR
TOP-SIDE MARKING
PCA9543A
PD543A
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated