TCA9539QPWRQ1
The TCA9539 is a 16-bit general-purpose I/O expander for I2C/SMBus that adds remote I/O ports to a host with limited pins. It operates from 1.65 V to 5.5 V, supports up to 400 kHz bus speed, four programmable addresses, and includes an interrupt-output and reset pin with configuration registers, rated -40 C to 85 C. It is used in automotive and industrial systems to expand MCU GPIO.
- Package
- TSSOP-24
Product overview
The TCA9539 is a 16-bit general-purpose I/O expander for I2C/SMBus that adds remote I/O ports to a host with limited pins. It operates from 1.65 V to 5.5 V, supports up to 400 kHz bus speed, four programmable addresses, and includes an interrupt-output and reset pin with configuration registers, rated -40 C to 85 C. It is used in automotive and industrial systems to expand MCU GPIO.
- Manufacturer
- TI
- Part number
- TCA9539QPWRQ1
- Category
- Interface
- Package
- TSSOP-24
- Packaging
- Tape & Reel
- Condition
- New & Original
- Compliance
- RoHS & REACH Compliant
- Lifecycle
- Confirm with manufacturer
- Lead time / MOQ
- Confirm with quotation
Technical parameters
35 parametersConstruction
- Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001
- ±2000
- A0, A1, RESET, P07–P00, P10–P17 0.7 ×
- 5.5
- Tj ≤ 65°C
- 25
- fscl I2C clock frequency
- 100 kHz
- tsch I2C clock high time
- 4 µs
- tscl I C clock low time
- 4.7 µs
- tsp I2C spike time
- 50 ns
- tsds I2C serial-data setup time
- 250 ns
- tsdh I C serial-data hold time
- 0 ns
- ticr I2C input rise time
- 1000 ns
- ticf I2C input fall time
- 300 ns
- tocf I2C output fall time 10-pF to 400-pF bus
- 300 ns
- tbuf I C bus free time between stop and start
- 4.7 µs
- tsts I2C start or repeated start condition setup
- 4.7 µs
- tsth I2C start or repeated start condition hold
- 4 µs
- tsps I C stop condition setup
- 4 µs
- tvd(data) Valid data time SCL low to SDA output valid
- 3.45 µs
- tvd(ack) Valid data time of ACK condition
- 3.45 µs
- Cb I2C bus capacitive load
- 400 pF
- tscl I2C clock low time
- 1.3 µs
- tsp I C spike time
- 50 ns
- tsdh I2C serial-data hold time
- 0 ns
- tW Reset pulse duration
- 6 ns
- tREC Reset recovery time
- 0 ns
- Time to reset; for VCC = 2.3 V - 5.5
- 400 ns
- Time to reset; for VCC = 1.65 V - 2.3
- 550 ns
- tiv Interrupt valid time P port
- 4 μs
- tir Interrupt reset delay time SCL
- 4 μs
- Output data valid; For VCC = 2.3 V - 5.5
- 200 ns
- Output data valid; For VCC = 1.65 V - 2.3
- 300 ns
- tps Input data setup time P port
- 150 ns
- tph Input data hold time P port
- 1 μs
Performance
- VCC Supply voltage
- 6 V
- IOH High-level output current P07–P00, P17–P10
- 10 mA
- VIK Input diode clamp voltage II = –18 mA 1.65 V to 5.5
- 1.2 V
Specifications & documentation
Use the official manufacturer documentation to verify electrical characteristics, package dimensions and operating limits before design approval.
Request confirmation of current stock, date code, packaging, price and delivery terms. Product information does not constitute a binding offer; final specifications are confirmed with your quotation.