Overview
The PCA9519PW,118 is a 4-channel level translating I2C-bus/SMBus repeater produced by NXP USA Inc. This component is designed to enable the interface between a processor's low-voltage 2-wire serial bus and standard I2C-bus or SMBus I/O, facilitating voltage level translation and signal buffering. It is particularly useful in systems where different voltage levels need to be accommodated without compromising the performance of the I2C-bus system.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | - |
| Operating Supply Voltage Range (Port A) | 1.0 V to VCC(B) - 1.5 V | V |
| Operating Supply Voltage Range (Port B) | 3.0 V to 5.5 V | V |
| Maximum Capacitance on Higher Voltage Side | 400 pF | pF |
| Input/Output Capacitance | 6 - 7 pF | pF |
| LOW-level Output Voltage (IOL = 6 mA) | 0.1 - 0.2 V | V |
| HIGH-level Output Leakage Current (VO = 3.6 V) | -10 μA | μA |
| Package Type | 20-TSSOP | - |
Key Features
- Voltage level translation from port A (1 V to VCC(B) - 1.5 V) to port B (3.0 V to 5.5 V)
- No external pull-up resistors required on lower voltage port A
- Active HIGH repeater enable input
- Open-drain inputs/outputs
- Lock-up free operation
- Supports arbitration and clock stretching across the repeater
- Accommodates Standard-mode and Fast-mode I2C-bus devices and multiple masters
- Powered-off high-impedance I2C-bus pins
- 5 V tolerant B-side SCL and SDA and enable pins
- 50 ns glitch filter on B-side input
Applications
The PCA9519PW,118 is suitable for various applications where level translation between different voltage domains is necessary. This includes:
- Embedded systems requiring interface between low-voltage processors and higher voltage I2C or SMBus devices
- Industrial control systems where multiple voltage levels are present
- Automotive systems that require robust and reliable communication across different voltage domains
- Consumer electronics where compatibility with various voltage levels is essential
Q & A
- What is the primary function of the PCA9519PW,118?
The PCA9519PW,118 is a 4-channel level translating I2C-bus/SMBus repeater that enables voltage level translation and signal buffering between different voltage domains.
- What are the operating supply voltage ranges for Port A and Port B?
Port A operates from 1.0 V to VCC(B) - 1.5 V, and Port B operates from 3.0 V to 5.5 V.
- Does the PCA9519PW,118 require external pull-up resistors on Port A?
No, the PCA9519PW,118 does not require external pull-up resistors on the lower voltage Port A.
- What is the maximum capacitance supported on the higher voltage side?
The maximum capacitance supported on the higher voltage side is 400 pF.
- Is the PCA9519PW,118 compatible with Standard-mode and Fast-mode I2C-bus devices?
- What is the package type of the PCA9519PW,118?
The PCA9519PW,118 comes in a 20-TSSOP package.
- Does the PCA9519PW,118 support arbitration and clock stretching?
- Are the B-side SCL and SDA pins 5 V tolerant?
- What is the purpose of the 50 ns glitch filter on the B-side input?
The 50 ns glitch filter on the B-side input helps to filter out short-duration voltage spikes or glitches.
- Is the PCA9519PW,118 RoHS compliant?
