Overview
The PCA9500BSHP, produced by NXP USA Inc., is an 8-bit I/O expander integrated with a 2-kbit EEPROM. This device is designed to expand the I/O capabilities of a microcontroller via an I2C or SMBus interface. It features eight quasi-bidirectional data pins that can be independently configured as inputs or outputs, making it versatile for monitoring board-level status or controlling indicator devices such as LEDs.
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 | |||
| Operating Temperature | -40°C | 85°C | °C | ||
| Package Types | SO16, TSSOP16, HVQFN16 |
Key Features
- 8-bit I/O expander with quasi-bidirectional data pins that can be independently configured as inputs or outputs.
- On-board 2-kbit EEPROM for storing error codes, board manufacturing data, or other configuration information.
- I2C and SMBus compatibility with clock frequencies up to 400 kHz.
- 5 V tolerant inputs/outputs.
- ESD protection exceeding 2000 V HBM, 200 V MM, and 1000 V CDM.
- Latch-up testing compliant with JEDEC Standard JESD78, exceeding 100 mA.
- Three address pins with internal pull-up resistors, allowing up to eight devices to share the same I2C/SMBus bus.
Applications
- Board version tracking and configuration.
- Board health monitoring and status reporting.
- Multi-card systems in telecommunications, networking, and base station infrastructure equipment.
- General-purpose I/O expansion in various embedded systems.
Q & A
- What is the PCA9500BSHP?
The PCA9500BSHP is an 8-bit I/O expander with a 2-kbit EEPROM, designed for expanding the I/O capabilities of a microcontroller via an I2C or SMBus interface.
- What are the key features of the PCA9500BSHP?
Key features include 8-bit quasi-bidirectional I/O, on-board 2-kbit EEPROM, I2C and SMBus compatibility, 5 V tolerant inputs/outputs, and robust ESD protection.
- What are the operating voltage and temperature ranges for the PCA9500BSHP?
The operating voltage range is 2.5 V to 3.6 V, and the operating temperature range is -40°C to 85°C.
- What types of packages are available for the PCA9500BSHP?
The PCA9500BSHP is available in SO16, TSSOP16, and HVQFN16 packages.
- How many devices can share the same I2C/SMBus bus?
Up to eight devices can share the same I2C/SMBus 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 be used to store error codes, board manufacturing data, or other configuration information for diagnostic purposes.
- What are some common applications of the PCA9500BSHP?
- Does the PCA9500BSHP have ESD protection?
- What is the clock frequency range for the I2C/SMBus interface?
- Is the PCA9500BSHP compliant with any specific standards for latch-up testing?
