IC Phoenix logo

Home ›  P  › P13 > PCA9544ABS

PCA9544ABS from PHILIS,Philips

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

PCA9544ABS

Manufacturer: PHILIS, PHILIP, NXP

4-channel I2C-bus multiplexer with interrupt logic

Partnumber Manufacturer Quantity Availability
PCA9544ABS PHILIS, PHILIP, NXP 572 In Stock

Description and Introduction

4-channel I2C-bus multiplexer with interrupt logic **Introduction to the PCA9544ABS from Philips**  

The PCA9544ABS is a versatile I²C bus multiplexer designed by Philips (now NXP Semiconductors) to enable communication between a single master device and multiple I²C slave devices. This component is particularly useful in systems where multiple I²C devices share the same address, allowing seamless switching between different bus segments without address conflicts.  

Featuring four bidirectional channels, the PCA9544ABS provides a reliable solution for expanding I²C bus capacity while maintaining signal integrity. Each channel can be individually selected via I²C commands, ensuring efficient control over connected peripherals. The device supports standard (100 kHz) and fast (400 kHz) I²C modes, making it compatible with a wide range of applications.  

With low standby current and 5V-tolerant I/O pins, the PCA9544ABS is suitable for mixed-voltage environments. Its compact TSSOP-20 package ensures space-efficient integration into modern electronic designs. Common applications include industrial automation, embedded systems, and consumer electronics where multiple I²C devices must coexist on a single bus.  

The PCA9544ABS simplifies complex I²C architectures, offering a robust and cost-effective solution for bus management. Its reliability and ease of use make it a preferred choice for engineers working with multi-device I²C systems.

Application Scenarios & Design Considerations

4-channel I2C-bus multiplexer with interrupt logic

Alternative Part Number

  • TCA9544APWR --: Pin-compatible 4-channel I2C multiplexer from TI with similar function and voltage range, widely available and often used as a direct substitute.
  • PCA9544APW --: Original NXP 4-channel I2C switch in TSSOP package, functionally identical to the PCA9544ABS and a reliable drop-in replacement.
  • PCA9544AD --: Same 4-channel I2C multiplexer family in SOIC package, offering equivalent electrical characteristics when package footprint allows.
  • TCA9544APWR --: Pin-compatible 4-channel I2C switch with interrupt logic, direct functional equivalent to the PCA9544A in a TSSOP package.
  • PCA9544APW --: Same 4-channel I2C multiplexer from the original NXP (formerly Philips) family, matching function and register set.
  • TCA9544ADWR --: 4-channel I2C switch with interrupt output in SOIC package, drop-in functional replacement for the PCA9544A.
  • TCA9544APWR --: Pin-compatible 4-channel I2C/SMBus switch with interrupt logic, direct functional equivalent to the PCA9544A in a TSSOP package.
  • PCA9544APW --: Same 4-channel I2C multiplexer with interrupt from NXP in TSSOP-20, differing only in package from the HVQFN version.
  • TCA9544ADWR --: 4-channel I2C switch with interrupt output in SOIC-20, electrically compatible alternative when a wider package is acceptable.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips