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Product Detailed Parameters
- Description：IC XPNDR 1MHZ I2C SMBUS 8X2SON
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of I/O：4
- Interface：I2C, SMBus
- Interrupt Output：Yes
- Features：POR
- Output Type：Open Drain
- Current - Output Source/Sink：10mA, 25mA
- Clock Frequency：1 MHz
- Voltage - Supply：1.65V ~ 5.5V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-XFDFN Exposed Pad
- Supplier Device Package：8-X2SON (1.35x0.8)
- Grade：-
- Qualification：-
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Overview
The TCA9536BDTMR is a remote 4-bit I2C and SMBus I/O expander manufactured by Texas Instruments. It operates within a supply voltage range of 1.65 V to 5.5 V, supporting 5-V tolerant I/O ports. The device features a 1-MHz Fast mode plus I2C bus interface and includes configuration registers for input/output selection and polarity inversion. It provides an open-drain interrupt output capability via the P3 pin and offers software-reset functionality through the I2C general call command. The component is housed in an X2SON-8 package with dimensions of 1.35 mm × 0.80 mm.
Feature Summary
- Supports 1-MHz Fast mode plus I2C communication with noise filters on SCL and SDA inputs
- Features latched outputs with high-current drive capability suitable for directly driving LEDs
- Includes internal power-on reset and software-enabled integrated pull-up resistors on P ports
- Allows P3 pin repurposing as an open-drain INT output triggered by input state changes
Applications
- Wearable electronics
- Mobile phones
- Gaming consoles
- Servers
- Routers
Procurement Notes
Verify the specific ordering suffix 'DTMR' corresponds to the X2SON-8 package and reel packaging format required for your assembly process. Confirm that the 1.65 V to 5.5 V operating voltage range aligns with your system's power rails. Ensure ESD protection ratings meet your manufacturing handling standards.
Selection Notes
Select this component when a compact 4-bit expansion solution is needed for low-voltage microcontroller systems. The wide supply voltage range allows compatibility with both 1.8 V and 5 V logic domains. Consider the X2SON-8 package size constraints and the requirement for I2C bus connectivity when integrating into the design.
Part Context
The TCA9536BDTMR belongs to the TCA9536 series of I/O expanders from Texas Instruments. This series is designed for general-purpose remote I/O expansion across various microcontroller families. The device complements other interface ICs by providing additional GPIO capabilities over standard serial buses.
Replacement Considerations
The PCA9536DR serves as a functional substitute within the same family. Note that the PCA9536 variant typically lacks the interrupt output feature and operates with a minimum voltage of 2.3 V rather than 1.65 V.
