TCA9554PWR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TCA9554PWR is an 8-bit I2C GPIO expander from Texas Instruments supporting up to 400 kHz Fast-mode I2C. Features 8 individually configurable I/O lines with interrupt output, operating at 2.3–5.5 V. From $0.40 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- TCA9554PWR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4039(MOQ 25)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TCA9554PWR?
- 8-bit I/O expansion via I2C bus at up to 400 kHz Fast-mode operation
- 8 individually programmable I/O pins with open-drain interrupt output for event-driven designs
- Wide supply voltage range of 2.3 V to 5.5 V for compatibility with 3.3 V and 5 V systems
- 3 hardware address pins allow up to 8 devices on the same I2C bus
- 16-pin TSSOP (PWR) package enables compact PCB layout in space-constrained applications
What is TCA9554PWR used for?
The TCA9554PWR is widely used in embedded systems to expand the GPIO count of microcontrollers and SoCs, enabling control of LEDs, relays, buttons, and status indicators without consuming additional MCU pins. It is commonly deployed in industrial I/O modules, smart home controllers, and server management boards where multiple devices share a single I2C bus. Its low quiescent current and wide voltage range also make it well suited for battery-powered IoT nodes and portable consumer electronics.
What are the specifications of TCA9554PWR?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Address Bus Width | 8 |
| Clock Frequency-Max | 0.4MHz |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Bits | 8 |
| Number of I/O Lines | 8 |
| Number of Ports | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.034mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 1.65V |
| Supply Voltage-Nom | 1.8V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| uPs/uCs/Peripheral ICs Type | PARALLEL IO PORT, GENERAL PURPOSE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mainland China, Malaysia, Taiwan |
Where can I find the TCA9554PWR datasheet?
TCA9554PWR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TCA9554PWR?
Compatible alternatives and drop-in replacements for TCA9554PWR:
Frequently Asked Questions
What is the maximum I2C clock frequency supported by the TCA9554PWR?
The TCA9554PWR supports Fast-mode I2C communication at up to 400 kHz, making it compatible with both Standard-mode (100 kHz) and Fast-mode (400 kHz) I2C masters. This allows reliable GPIO expansion in high-speed embedded designs.
How many TCA9554PWR devices can share the same I2C bus?
The TCA9554PWR provides 3 hardware address pins (A0, A1, A2), allowing up to 8 unique I2C addresses (0x20–0x27) on a single bus. This means up to 8 devices — providing 64 additional I/O lines — can coexist on the same two-wire I2C interface.
What is the operating voltage range of the TCA9554PWR?
The TCA9554PWR operates from 2.3 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic systems. This wide supply range simplifies integration into mixed-voltage designs without requiring level-shifting circuitry.
What package does the TCA9554PWR come in, and what are typical alternatives?
The TCA9554PWR is packaged in a 16-pin TSSOP (TSSOP-16, PWR suffix) with a 4.4 mm body width, suitable for compact PCB designs. Functional alternatives include the TCA9554APWR (with open-drain outputs), PCA9554PWR (NXP), and MCP23008 (Microchip), all offering similar 8-bit I2C GPIO expansion.
Does the TCA9554PWR support interrupt functionality?
Yes, the TCA9554PWR features an active-low open-drain interrupt output (INT) that asserts whenever any input pin changes state. This enables the host microcontroller to respond to GPIO events without continuously polling the device over I2C, reducing bus overhead and power consumption.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.9730 | $24.32 |
| 100+ | $0.8630 | $86.30 |
| 250+ | $0.7800 | $195.00 |
| 460+ | $0.4368 | $200.93 |
| 595+ | $0.4203 | $250.08 |
| 745+ | $0.4039 | $300.91 |
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