Overview
The PCA9500PW,112 is an 8-bit I/O expander produced by NXP Semiconductors, which was previously part of Freescale Semiconductor. This component integrates an 8-bit I2C-bus and SMBus I/O port along with a 2-kbit EEPROM. The I/O expander features eight quasi-bidirectional data pins that can be independently assigned as inputs or outputs, allowing for monitoring board level status or activating indicator devices such as LEDs. The on-board EEPROM can store error codes or board manufacturing data for diagnostic purposes.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.5 | 3.3 | 3.6 | V | |
| Standby Current (IDDQ) | A0, A1, A2, WC = HIGH | - | - | 60 μA | A |
| Supply Current (IDD1) - Read | - | - | 1 mA | A | |
| Supply Current (IDD2) - Write | - | - | 2 mA | A | |
| Power-on Reset Voltage (VPOR) | - | - | 2.4 V | V | |
| LOW-level Input Voltage (VIL) | -0.5 | - | 0.3VDD | V | |
| HIGH-level Input Voltage (VIH) | 0.7VDD | - | 5.5 V | V | |
| LOW-level Output Current (IOL) | VOL = 0.4 V | 3 | - | - | mA |
| Input Leakage Current (ILI) | VI = VDD or VSS | -1 | - | - | μA |
| Clock Frequency | 0 Hz | - | 400 kHz | Hz | |
| Operating Temperature (Tamb) | -40 | - | 85 | °C | |
| Package | - | - | 16-TSSOP | - |
Key Features
- 8-bit I2C-bus and SMBus I/O port with 2-kbit EEPROM
- Eight quasi-bidirectional data pins that can be independently assigned as inputs or outputs
- Operating power supply voltage range of 2.5 V to 3.6 V
- 5 V tolerant inputs/outputs
- Clock frequency range of 0 Hz to 400 kHz
- ESD protection exceeds 2000 V HBM, 200 V MM, and 1000 V CDM
- Latch-up testing exceeds 100 mA according to JEDEC Standard JESD78
- Three address pins with internal pull-up resistors, allowing up to eight devices on the same I2C-bus
Applications
- Board version tracking and configuration
- Board health monitoring and status reporting
- Multi-card systems in telecommunications, networking, and base station infrastructure equipment
Q & A
- What is the PCA9500PW,112?
The PCA9500PW,112 is an 8-bit I/O expander with an on-board 2-kbit EEPROM, produced by NXP Semiconductors.
- What is the voltage range for the PCA9500PW,112?
The operating power supply voltage range is from 2.5 V to 3.6 V.
- What is the clock frequency range of the PCA9500PW,112?
The clock frequency range is from 0 Hz to 400 kHz.
- How many devices can share the same I2C-bus?
Up to eight devices can share the same I2C-bus due to the three address pins with internal pull-up resistors.
- What is the purpose of the on-board EEPROM?
The on-board EEPROM can store error codes or board manufacturing data for diagnostic purposes.
- What are the package options for the PCA9500PW,112?
The PCA9500PW,112 is available in a 16-TSSOP package.
- What is the operating temperature range for the PCA9500PW,112?
The operating temperature range is from -40°C to +85°C.
- Does the PCA9500PW,112 have ESD protection?
Yes, the PCA9500PW,112 has ESD protection that exceeds 2000 V HBM, 200 V MM, and 1000 V CDM.
- What are some common applications of the PCA9500PW,112?
Common applications include board version tracking, board health monitoring, and multi-card systems in telecommunications and networking equipment.
- Can the I/O pins be configured as inputs or outputs?
Yes, the eight quasi-bidirectional data pins can be independently assigned as inputs or outputs.
