TCA9554APWR
Interface ICs
Technical Specifications
| Type | Description |
|---|---|
| Interface | I2C;SMBus |
| Number of I/O | 8 |
| Quiescent Current | 1.9 µA |
| Interrupt Output | Interrupt Output |
| Number of Supporting Devices | 8 |
| Current - Output High(IOH) | 10mA |
| Type | Description |
|---|---|
| Operating Temperature | -40°C~+85°C |
| Output Type | Push-Pull |
| Features | Reset function;Built-in LED driver;Cascade and address expansion |
| Supply Voltage | 1.65V~5.5V |
| Package / Case | TSSOP-16 |
Product Introduction
The TCA9554A is a 16-pin device that provides 8-bit general-purpose parallel input/output (I/O) expansion for the two-wire bidirectional I²C bus (or SMBus) protocol. The device operates with a supply voltage ranging from 1.65V to 5.5V. It supports two clock frequencies: 100kHz (Standard Mode) and 400kHz (Fast Mode). When additional I/O is required for switches, sensors, buttons, LEDs, fans, and other similar devices, an I/O expander like the TCA9554A offers a simple solution. The TCA9554A can generate an interrupt on the INT pin when the input state changes. The hardware-selectable address pins A0, A1, and A2 allow up to eight TCA9554A devices to be on the same I²C bus. The device can also be powered through a power cycle to generate a power-on reset, resetting it to the default state.
Features
- I²C to parallel port expander
- Active-low interrupt output with open-drain
- Operating supply voltage range: 1.65 V to 5.5 V
- 5V-tolerant I/O ports
- 400kHz Fast-mode I²C bus
- 3 hardware address pins supporting up to 8 devices on I2C/SMBus
- Input and output configuration registers
- Polarity inversion register
- Internal power-on reset
- Low standby current consumption
- All channels configured as inputs at power-on
- No glitch pulses at power-on
- Noise filter on SCL/SDA inputs
- Latched outputs with maximum high-current drive capability for direct LED driving
- Latch-up performance exceeding 100mA (compliant with JESD 78 Class II)
- ESD protection exceeding JESD 22 specification requirements
- 2000V Human Body Model (A114-A)
- 1000V Charged Device Model (C101)
Applications
- Servers
- Routers (telecom switching equipment)
- Personal computers
- Personal electronics (e.g., gaming consoles)
- Industrial automation
- Products using GPIO-constrained processors
Datasheet
Alternative Parts
Common TCA9554APWR alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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