PCA9539DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The PCA9539DWG4 is a 16-bit I2C/SMBus GPIO expander operating up to 5.5 V with a 400 kHz bus speed and 16 configurable I/O lines across 2 ports. Housed in a 24-pin SOIC package, it is available in tube packaging with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- PCA9539DWG4 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
What are the key features of PCA9539DWG4?
- 16 configurable I/O pins across 2 independent 8-bit ports for flexible GPIO expansion
- 400 kHz I2C/SMBus compatible interface supporting fast-mode communication up to 5.5 V
- Hardware interrupt output enables host notification without polling, reducing CPU load
- 24-pin SOIC package with address pins supporting up to 4 devices on a single bus
What is PCA9539DWG4 used for?
The PCA9539DWG4 is commonly deployed in industrial control panels, server backplanes, and embedded computing platforms where the host microcontroller lacks sufficient GPIO pins. Its dual 8-bit port structure simplifies parallel control of LED arrays, relay banks, and button matrices over a simple 2-wire I2C bus. Designers also use it in display systems and hot-swap management circuits that require interrupt-driven status monitoring at 400 kHz.
What are the specifications of PCA9539DWG4?
| YTEOL | 0 |
| Clock Frequency-Max | 0.4MHz |
| JESD-30 Code | R-PDSO-G24 |
| JESD-609 Code | e4 |
| Number of Bits | 16 |
| Number of I/O Lines | 16 |
| Number of Ports | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP24,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.2mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.3V |
| Supply Voltage-Nom | 3V |
| 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 |
Where can I find the PCA9539DWG4 datasheet?
PCA9539DWG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PCA9539DWG4?
Compatible alternatives and drop-in replacements for PCA9539DWG4:
Frequently Asked Questions
Which verified specification should I match for PCA9539DWG4?
The available product data identifies 16-bit; use this verified value with manufacturer documentation when checking circuit compatibility, tolerances, and design margins.
How should PCA9539DWG4 be evaluated in a new Integrated Circuit design?
PCA9539DWG4 is categorized as a Integrated Circuit, and its available data includes 16-bit; confirm every operating limit before production use.
What should be compared before substituting PCA9539DWG4?
Any substitute should match the electrical function, Small Outline Packages footprint, and 16-bit; also compare pinout, environmental ratings, lifecycle, and qualification requirements.
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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.
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