I²C multiplexers for more consistant system management

16 Feb 2000 Telecoms, Datacoms, Wireless, IoT

Philips Semiconductors is offering a family of I2C multiplexers designed to provide more reliable, consistent switching for multiple system management buses and multiple I2C devices. Philips Semiconductors continues its leadership in I2C technology, offering a wide range of I2C devices to address all levels of the computing market, including desktop PCs, workstations, and servers.

The PCA954x family is designed for multiple system management buses or multiple I2C devices with the same address, different voltage levels, or loads too large for the I2C master to handle. The devices provide multiplexing and interrupt controlling to eliminate the need for glue logic and general purpose I/Os. In addition, the devices provide diodes to enable shifting between 5,0 and 3,3 V buses and bus isolation to prevent system hang-ups.

The PCA9540 is a two-channel I2C multiplexer without interrupts that switches between two I2C devices or buses. The PCA9542 is a two-channel multiplexer that contains three address pins, allowing a bus to use eight PCA9542s to switch up to 16 I2C devices or buses. The PCA9544 is a four-channel multiplexer that can be used for switching up to 32 I2C devices or buses. Both devices include an interrupt controller to prevent system hang-ups if a bus generates interrupts.

For further information see www.philipslogic.com/i2c or contact local distributors Arrow Altech Distributiion (011) 923 9600, Avnet Kopp (011) 444 2333 and Electrocomp (011) 458 9000.

Further reading:

Simplifying system design
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
The FGMC63N tri-band MCU Wi-Fi 6E module from Quectel addresses offers integrated connectivity across 2,4 GHz, 5 GHz, and 6 GHz bands in a compact, highly optimised design.

Read more...

---

Dragino’s connectivity catalogue
Otto Wireless Solutions Telecoms, Datacoms, Wireless, IoT
Where Wi-Fi demands frequent charging and covers tens of meters, and traditional cellular consumes too much power for battery-operated nodes, LoRaWAN threads the needle.

Read more...

---

RF filters explained
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
As RF environments become increasingly crowded, RF filters play a critical role in maintaining signal quality, improving system performance, and ensuring reliable operation.

Read more...

---

Practical design strategies for 5G
RF Design Telecoms, Datacoms, Wireless, IoT
The Cavli CQM211 aims to provide a platform that combines strong 5G connectivity with onboard compute capability, as well as interface flexibility that suits both new designs and rapid migrations from earlier products.

Read more...

---

GigaDevice expands optical communication portfolio
NuVision Electronics Telecoms, Datacoms, Wireless, IoT
GigaDevice has introduced the new GD32E512 and GD32E252 series MCUs specifically designed for optical module applications.

Read more...

---

An industry-first Android 16 smart module solution
RF Design Computer/Embedded Technology Telecoms, Datacoms, Wireless, IoT
The MeiG Smart SLM580 4G Smart Module features native support for Android 16 and covers core frequency bands in major countries and regions worldwide.

Read more...

---

High performance RF signal conditioning
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
The AM3269 from Mercury Systems is a high-performance RF preselector module designed to improve receiver sensitivity and signal integrity in demanding electronic warfare, signals intelligence, test, and communications applications.

Read more...

---

RF filters explained
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
As RF environments become increasingly crowded, RF filters play a critical role in maintaining signal quality, improving system performance, and ensuring reliable operation.

Read more...

---

GigaDevice expands optical communication portfolio
NuVision Electronics Telecoms, Datacoms, Wireless, IoT
GigaDevice has introduced the new GD32E512 and GD32E252 series MCUs specifically designed for optical module applications.

Read more...

---

Industrial connectivity without compromise
Telecoms, Datacoms, Wireless, IoT
The IR315 combines 4G LTE, Wi-Fi, Ethernet, and VPN technologies into a rugged, industrial-grade platform that enables seamless connectivity across a wide range of applications.

Read more...

---