
Allicdata Part #: | PCA9546APWTG4-ND |
Manufacturer Part#: |
PCA9546APWTG4 |
Price: | $ 0.94 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC I2C SMBUS SWITCH 4CH 16-TSSOP |
More Detail: | Translating Switch Interface 16-TSSOP |
DataSheet: | ![]() |
Quantity: | 1000 |
500 +: | $ 0.85334 |
Series: | -- |
Packaging: | Tape & Reel (TR) |
Part Status: | Active |
Applications: | Translating Switch |
Interface: | I²C, SMBus |
Voltage - Supply: | 2.3 V ~ 5.5 V |
Package / Case: | 16-TSSOP (0.173", 4.40mm Width) |
Supplier Device Package: | 16-TSSOP |
Mounting Type: | Surface Mount |
Base Part Number: | PCA9546 |
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The PCA9546APWTG4 chip is a specialized interface that supports all of the latest I2C, SPI, SMB and SMBus protocols. Its primary use is to enable communication between multiple peripherals and a host CPU, though it can also be used to connect analog and digital peripherals to one another. It provides two I2C masters, two SPI slaves, and two SMBus masters and up to eight slave devices.
The PCA9546APWTG4 chip is flexible and designed with a wide range of applications in mind. It is compatible with a number of different microcontrollers and can be used in a variety of applications, including automotive, industrial, communication, and consumer electronics. Some of the most popular applications for the PCA9546APWTG4 chip include wireless communication, such as Bluetooth and Wi-Fi, as well as touchscreens and sensors.
The PCA9546APWTG4 chip stands out from other interfaces due to its ability to support long-distance I2C, SPI, and SMBus communication between multiple peripherals. This allows for a much wider range of applications than conventional communication protocols. It also provides eight dedicated pins for communication with peripherals, which eliminates the need for additional external wiring and reduces power consumption.
The PCA9546APWTG4 chip also features programmable pull-up and pull-down resistors to ensure low energy usage. This feature allows the chip to save power by automatically entering sleep mode when it is not being used. This feature also allows peripherals to communicate with the host over long distances without using additional external power.
To understand how the PCA9546APWTG4 works, it’s necessary to first take a look at the way I2C, SPI, and SMBus protocols operate. The I2C protocol allows two devices to communicate by transmitting electrical data over a two-wire system. The two lines, SDA (data) and SCL (clock), carry the data in the form of electrical pulses. The master device (typically a microcontroller) transmits data to the slave (peripheral device) over the I2C protocol. The master also defines the frequency and timing as well as the number of bytes (or bits) to be transmitted.
The SPI protocol is a three-wire system that allows data to be transferred between up to four devices. The SCK (clock) wire transmits timing information along with the data. It is typically used for single master transfers which require clock synchronization. The bus master drives the SCK to define the data rate and shift direction. The MOSI (master out slave in) wire carries data from the master to the slave. The MISO (master in slave out) wire carries data from the slave to the master.
The SMBus protocol is similar to the I2C protocol in that it allows two devices to communicate through two wires, but it also adds additional features, such as the ability to read and write data to multiple addresses. This protocol was designed to provide a greater degree of flexibility and is commonly used to control and power peripherals on embedded systems. The SMBus protocol is based on the I2C protocol but with added functionality and also provides protection against short and overloads.
The PCA9546APWTG4 chip is designed to interface with all of these protocols. It is capable of supporting up to eight peripherals simultaneously, making it ideal for connecting multiple devices to a single host. The chip also features programmable pull-up and pull-down resistors to reduce power consumption and provide extra flexibility. With its wide range of applications and features, the PCA9546APWTG4 is an ideal choice for many embedded applications.
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