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Product Detailed Parameters
- Description：IC XPNDR 400KHZ I2C 16SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of I/O：8
- Interface：I2C
- Interrupt Output：Yes
- Features：-
- Output Type：Push-Pull
- Current - Output Source/Sink：-
- Clock Frequency：400 kHz
- Voltage - Supply：1.65V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
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Overview
The TCA9534ADWR is an 8-bit I/O expander manufactured by Texas Instruments, designed for remote I/O expansion via I2C and SMBus interfaces. It operates within a supply voltage range of 1.65 V to 5.5 V and supports clock frequencies up to 400 kHz. The device features open-drain and push-pull output types with a maximum output current of 25 mA. It includes configuration registers and an interrupt output pin. Operating temperatures range from -40°C to +85°C. The component is housed in a 16-pin SOIC package and provides 2 kV ESD protection.
Feature Summary
- Supports I2C and SMBus serial communication protocols for system integration.
- Includes dedicated configuration registers for flexible input/output direction control.
- Features an interrupt output pin to signal state changes to the host processor.
Applications
- Remote I/O expansion in embedded systems
- Consumer electronics requiring additional GPIO pins
- Industrial control interfaces
Procurement Notes
Verify the specific suffix 'ADWR' against the manufacturer's official datasheet to confirm the package type (SOIC-16) and tape-and-reel packaging details. Ensure compatibility with the target I2C address configuration and voltage levels before procurement. Cross-reference the RoHS compliance status with the latest environmental declarations provided by Texas Instruments.
Selection Notes
Select this component when an 8-bit I/O expansion solution is required with low power consumption and wide voltage tolerance. The SOIC-16 package suits surface-mount applications with moderate pin density needs. Verify that the system's I2C bus speed does not exceed 400 kHz and that the operating temperature range aligns with the -40°C to +85°C specification.
Part Context
This part belongs to the TCA9534A series of I/O expanders from Texas Instruments. It shares core functionality with variants like TCA9534DWR and TCA9534ADWT, differing primarily in packaging and reel specifications. The series is designed for general-purpose I/O expansion in space-constrained designs.
Replacement Considerations
The MAX7329AWE+ is listed as a similar alternative by distributors. Verify pinout compatibility and register mapping before substitution. No direct pin-to-pin replacements are explicitly confirmed in the provided source material beyond this general similarity.
