TCA9555RGER Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock
Texas Instruments TCA9555RGER is a 16-bit I2C and SMBus I/O expander with interrupt output operating from 1.65V to 5.5V in a 24-pin VQFN package. Provides two 8-bit I/O ports with configurable direction registers and 400kHz fast-mode I2C interface. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 25
- Lifecycle
- ACTIVE
- Datasheet
- TCA9555RGER Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7532(MOQ 250)
- 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 TCA9555RGER?
- 16 independently configurable I/O lines across two 8-bit ports expand microcontroller GPIO without additional address decoding logic
- Wide supply voltage range of 1.65V to 5.5V enables use across 1.8V, 3.3V, and 5V system designs without level shifting
- Hardware interrupt output signals the host when any input pin changes state, eliminating the need for continuous I2C polling
- SMBus and I2C compatibility with 400kHz fast-mode operation supports multi-device shared bus architectures with simple two-wire interface
What is TCA9555RGER used for?
The TCA9555RGER is widely used in microcontroller and FPGA designs that require additional GPIO lines for LED driving, button scanning, relay control, and peripheral interfacing via a simple I2C bus connection. It is well-suited for industrial control panels, consumer electronics, and embedded systems where the host MCU lacks sufficient I/O pins to manage multiple devices directly. The interrupt output enables efficient event-driven designs, reducing CPU overhead in multi-peripheral embedded applications.
What are the specifications of TCA9555RGER?
| Pbfree Code | Yes |
| Date Of Intro | 2016-06-03 |
| YTEOL | 15 |
| Address Bus Width | 8 |
| Clock Frequency-Max | 0.4MHz |
| JESD-30 Code | S-PQCC-N24 |
| 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 | LCC24,.16SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Supply Current-Max | 0.04mA |
| 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 | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| uPs/uCs/Peripheral ICs Type | PARALLEL IO PORT, GENERAL PURPOSE |
| Package | Quad Flat No-Lead |
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 | Philippines |
Where can I find the TCA9555RGER datasheet?
TCA9555RGER Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TCA9555RGER?
Compatible alternatives and drop-in replacements for TCA9555RGER:
Frequently Asked Questions
How many I/O lines does the TCA9555RGER provide?
The TCA9555RGER provides 16 I/O lines organized as two 8-bit ports, each independently configurable as input or output through software registers via the I2C or SMBus interface operating at up to 400kHz.
What supply voltage range does the TCA9555RGER support?
The TCA9555RGER operates from 1.65V to 5.5V supply voltage, making it compatible with 1.8V, 2.5V, 3.3V, and 5V logic systems, which simplifies I/O expansion across different microcontroller and FPGA voltage domains without external level translators.
Does the TCA9555RGER have an interrupt output and how does it work?
Yes, the TCA9555RGER has an active-low interrupt output that asserts whenever an input pin changes state, notifying the host processor without requiring continuous I2C bus polling. This reduces communication overhead and enables efficient event-driven embedded system design.
What package does the TCA9555RGER come in and when was it introduced?
The TCA9555RGER comes in a 24-pin VQFN (Very thin Quad Flat No-lead) package with JEDEC code S-PQCC-N24, providing a compact and thermally efficient surface-mount footprint. It was introduced in June 2016 and remains an active product with a YTEOL rating of 15 years.
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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 |
|---|---|---|
| 250+ | $0.9777 | $244.42 |
| 500+ | $0.8500 | $425.00 |
| 1000+ | $0.8100 | $810.00 |
| 3000+ | $0.7898 | $2369.40 |
| 6000+ | $0.7532 | $4519.20 |
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