Overview
The PCA9500BS,118 is an 8-bit I/O expander produced by NXP USA Inc., featuring an on-board 2-kbit EEPROM. This device is designed to expand the I/O capabilities of a system through an I²C or SMBus interface. The eight quasi-bidirectional data pins can be independently configured as inputs or outputs, allowing for the monitoring of board-level status or the activation of indicator devices such as LEDs. The integrated EEPROM can store error codes or board manufacturing data, which can be read back by application software for diagnostic purposes.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.5 | 3.3 | 3.6 | V | |
| Operating Temperature | -40 | 85 | °C | ||
| Input/Output Voltage Tolerance | 5 | V | |||
| Clock Frequency | 0 | 400 | kHz | ||
| ESD Protection | 2000 | V HBM | |||
| Output Current (Source/Sink) | 100µA | 25mA | |||
| Package Type | 16-HVQFN |
Key Features
- 8-bit I/O expander with on-board 2-kbit EEPROM for storing error codes or board manufacturing data.
- Eight quasi-bidirectional data pins that can be independently assigned as inputs or outputs.
- Supports I²C and SMBus interfaces with a clock frequency up to 400 kHz.
- Operating power supply voltage range of 2.5 V to 3.6 V and 5 V tolerant inputs/outputs.
- ESD protection exceeding 2000 V HBM, 200 V MM, and 1000 V CDM.
- Hot insertion capability for use in removable cards on backplane systems.
- Three address pins with internal pull-up resistors, allowing up to eight devices to share 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.
- Industrial automation and control systems.
- Home and building automation.
- Consumer electronics.
- Embedded systems.
- IoT (Internet of Things) devices.
Q & A
- What is the PCA9500BS,118?
The PCA9500BS,118 is an 8-bit I/O expander with an on-board 2-kbit EEPROM, produced by NXP USA Inc.
- What interfaces does the PCA9500BS support?
The PCA9500BS supports I²C and SMBus interfaces.
- What is the operating voltage range of the PCA9500BS?
The operating voltage range is from 2.5 V to 3.6 V.
- 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 integrated EEPROM?
The integrated EEPROM can store error codes or board manufacturing data for diagnostic purposes.
- What are the package types available for the PCA9500BS?
The PCA9500BS is available in a 16-HVQFN package.
- Does the PCA9500BS support hot insertion?
Yes, the PCA9500BS supports hot insertion, making it suitable for use in removable cards on backplane systems.
- What are some common applications of the PCA9500BS?
Common applications include board version tracking, board health monitoring, telecommunications, networking, industrial automation, and IoT devices.
- What is the maximum clock frequency supported by the PCA9500BS?
The maximum clock frequency supported is 400 kHz.
- What level of ESD protection does the PCA9500BS offer?
The PCA9500BS offers ESD protection exceeding 2000 V HBM, 200 V MM, and 1000 V CDM.
