Overview
The PCA9547PW,118 is an 8-channel I2C-bus multiplexer manufactured by NXP USA Inc. This device is designed to control and manage multiple I2C-bus channels, making it an essential component in various electronic systems. The PCA9547PW,118 allows for bidirectional translation between different voltage levels, supporting communication between devices operating at 1.8 V, 2.5 V, 3.3 V, and 5 V. It features an active LOW reset input, which helps recover from bus fault conditions, and supports hot insertion, making it versatile and reliable in different applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 24-TSSOP (0.173, 4.40mm Width) |
| Number of Channels | 8 |
| Interface | I2C, SMBus |
| Supply Voltage Range | 2.3 V to 5.5 V |
| Operating Temperature Range | -40°C to +85°C |
| Clock Frequency Range | 0 Hz to 400 kHz |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 |
| Latch-up Testing | Exceeds 100 mA per JEDEC Standard JESD78 |
| Input Tolerance | 5 V tolerant inputs |
Key Features
- 1-of-8 bidirectional translating multiplexer
- I2C-bus interface logic; compatible with SMBus standards
- Active LOW RESET input for recovering from bus fault conditions
- Three address pins allowing up to 8 devices on the I2C-bus
- Channel selection via I2C-bus, one channel at a time
- Power-up with all channels deselected except Channel 0 which is connected
- Low Ron multiplexers
- Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses
- No glitch on power-up
- Supports hot insertion
- Low standby current
Applications
The PCA9547PW,118 is suitable for a variety of applications where multiple I2C-bus devices need to be managed. These include:
- Industrial automation systems
- Consumer electronics
- Automotive systems
- Medical devices
- Embedded systems requiring multiple I2C-bus interfaces
Q & A
- What is the PCA9547PW,118 used for?
The PCA9547PW,118 is an 8-channel I2C-bus multiplexer used to manage and control multiple I2C-bus channels in electronic systems.
- What is the package type of the PCA9547PW,118?
The PCA9547PW,118 comes in a 24-TSSOP package with dimensions of 0.173 inches by 4.40 mm width.
- What is the operating voltage range of the PCA9547PW,118?
The operating voltage range is from 2.3 V to 5.5 V.
- Does the PCA9547PW,118 support voltage level translation?
Yes, it supports voltage level translation between 1.8 V, 2.5 V, 3.3 V, and 5 V buses.
- What is the purpose of the active LOW RESET input?
The active LOW RESET input is used to recover from bus fault conditions by resetting the I2C-bus state machine and deselecting all channels except Channel 0.
- Is the PCA9547PW,118 compatible with SMBus standards?
Yes, it is compatible with SMBus standards.
- What is the clock frequency range of the PCA9547PW,118?
The clock frequency range is from 0 Hz to 400 kHz.
- Does the PCA9547PW,118 support hot insertion?
Yes, it supports hot insertion.
- What is the ESD protection level of the PCA9547PW,118?
The ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101.
- What are the typical applications of the PCA9547PW,118?
Typical applications include industrial automation systems, consumer electronics, automotive systems, medical devices, and embedded systems requiring multiple I2C-bus interfaces.
