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RFQ ListingInterface ICs
The TCA9539QPWRQ1 is a Texas Instruments 16-bit I2C-bus I/O expander offering two 8-bit ports for driving LEDs, reading switches and extending MCU GPIO, qualified to AEC-Q100 for automotive use. Operating from a 1.65 V to 5.5 V supply at up to 1 MHz bus speed with an open-drain interrupt, it fits body and infotainment control nodes.
ManufacturerTexas Instruments
Package24-TSSOP (PW), 7.8×4.4 mm
SeriesTCA9539
Interface IC Specifications
| Parameter | Value / Specification |
|---|---|
| Function / Topology | 16-bit I2C-bus I/O expander |
| Bus Interface / Data Rate | I2C, up to 1 MHz (Fast-mode Plus) |
| Supply Voltage | 1.65 V to 5.5 V |
| Package / Case | 24-TSSOP (PW), 7.8×4.4 mm |
| Channels / Ports | 16 (two 8-bit ports) |
| Interrupt | Open-drain interrupt output |
| Automotive Qualification | AEC-Q100 qualified (Q1) |
| Operating Temperature | -40°C to +125°C (AEC-Q100 Grade 1) |
| Features | 100 kHz / 400 kHz / 1 MHz speed, active-low reset |
Interface Features & Applications
- 16-bit GPIO extension over a single I2C bus
- AEC-Q100 qualified for automotive applications
- 1.65 V to 5.5 V supply spans logic families
- Up to 1 MHz Fast-mode Plus I2C bus speed
- Open-drain interrupt flags input changes to the MCU
- 24-TSSOP (PW), 7.8×4.4 mm, defines the board footprint
- Two 8-bit ports suit LED, switch and sensor fan-out
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Frequently Asked Questions
Is TCA9539QPWRQ1 available from LimChip?
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What should buyers check before ordering TCA9539QPWRQ1?
Buyers should check interface standard, package, isolation, temperature grade and exact suffix for TCA9539QPWRQ1, together with live stock and traceable supply.
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