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DESCRIPTION/ORDERING INFORMATION

PCA9544A

WITH INTERRUPT LOGIC

SCPS146C – OCTOBER 2005 – REVISED OCTOBER 2006

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1-of-4 Bidirectional Translating Switches

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Low Standby Current

•

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Operating Power-Supply Voltage Range of

2.3 V to 5.5 V

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Four Active-Low Interrupt Inputs

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5.5-V Tolerant Inputs

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Active-Low Interrupt Output

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0 to 400-kHz Clock Frequency

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Three Address Pins, Allowing up to Eight

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Latch-Up Performance Exceeds 100 mA Per

JESD 78

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ESD Protection Exceeds JESD 22

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Power Up With All Switch Channels

Deselected

– 2000-V Human-Body Model (A114-A)

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Low R

– 200-V Machine Model (A115-A)

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Allows Voltage-Level Translation Between

– 1000-V Charged-Device Model (C101)

1.8-V, 2.5-V, 3.3-V, and 5-V Buses

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No Glitch on Power Up

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Supports Hot Insertion

fans out to four downstream pairs, or channels. One SCL/SDA pair can be selected at a time, and this is

determined by the contents of the programmable control register. Four interrupt inputs (INT3–INT0), one for

each of the downstream pairs, are provided. One interrupt output (INT) acts as an AND of the four interrupt

inputs.

channel selected.

voltage, which will be passed by the PCA9544A. This allows the use of different bus voltages on each pair, so

that 1.8-V, 2.5-V, or 3.3-V parts can communicate with 5-V parts, without any additional protection. External

pullup resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5-V tolerant.

ORDERING INFORMATION

ORDERABLE PART NUMBER

TOP-SIDE MARKING

QFN – RGW

Reel of 3000

PCA9544ARGWR

PREVIEW

QFN – RGY

Reel of 1000

PCA9544ARGYR

PD544A

Tube of 25

PCA9544ADW

PCA9544A

SOIC – DW

Reel of 2000

PCA9544ADWR

Reel of 250

PCA9544ADWT

PREVIEW

Tube of 70

PCA9544APW

–40

°C to 85°C

TSSOP – PW

Reel of 2000

PCA9544APWR

PD544A

Reel of 250

PCA9544APWT

Reel of 2000

PCA9544ADGVR

PD544A

TVSOP – DGV

Reel of 250

PCA9544ADGVT

PREVIEW

VFBGA – GQN

Reel of 1000

PCA9544AGQNR

PD544A

VFBGA – ZQN (Pb-free)

Reel of 1000

PCA9544AZQNR

PD544A

(1)

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

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.

Copyright © 2005–2006, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.