PCA9554ADWRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The PCA9554ADWRG4 is an 8-bit I2C and SMBus I/O expander IC by Texas Instruments in a 16-pin SOIC package. Key specs: 8 bidirectional I/O lines, 400 kHz fast-mode I2C, RoHS-compliant Pb-free construction. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- PCA9554ADWRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8 bidirectional I/O lines configurable as inputs or outputs via I2C registers, expanding microcontroller GPIO without additional bus wiring
- 400 kHz fast-mode I2C and SMBus compatibility enabling high-speed communication with modern microcontrollers and SoCs
- Programmable address pins allowing up to 8 devices on a single I2C bus for scalable multi-device GPIO expansion
- RoHS-compliant Pb-free 16-pin SOIC package (JESD-609 code e4) suitable for automated SMT assembly
Applications
The PCA9554ADWRG4 is used in embedded systems and single-board computers where microcontroller GPIO pins are limited and additional digital I/O lines are needed for LEDs, relays, buttons, or status indicators via a two-wire I2C bus. It is widely adopted in industrial HMI panels, IoT gateway boards, and server management controllers for remote GPIO control and monitoring. Consumer electronics products such as smart home devices and display modules also use this expander to add configurable I/O without increasing CPU package complexity.
Specifications
| YTEOL | 0 |
| 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 | SOP16,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.175mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.3V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| 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 | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many I/O lines does the PCA9554ADWRG4 provide and how are they configured?
The PCA9554ADWRG4 provides 8 bidirectional I/O lines organized as a single 8-bit port. Each line can be individually configured as an input or output by writing to the device's configuration register over the I2C bus, giving designers flexible per-pin direction control.
What communication interface does the PCA9554ADWRG4 use and at what speed?
The PCA9554ADWRG4 uses a standard I2C and SMBus interface supporting up to 400 kHz in fast mode. This allows it to communicate with virtually any modern microcontroller or SoC that includes an I2C peripheral, with only two wires (SDA and SCL) required regardless of how many I/O pins are needed.
How many PCA9554ADWRG4 devices can share a single I2C bus?
The PCA9554ADWRG4 has three hardware address select pins (A0, A1, A2), allowing up to 8 individual devices to coexist on the same I2C bus simultaneously. This enables up to 64 additional GPIO lines from a single I2C bus pair without any address conflicts.
What package does the PCA9554ADWRG4 use and is it RoHS compliant?
The PCA9554ADWRG4 comes in a 16-pin SOIC (JESD-30 code R-PDSO-G16, 0.4 inch body) surface-mount package made of plastic/epoxy. JESD-609 code e4 confirms Pb-free, RoHS-compliant terminal finish, making it suitable for environmentally regulated production lines.
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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.
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