TCA4311D Texas Instruments Integrated Circuit (Other) In Stock
The TCA4311D is a dual I2C bus buffer IC from Texas Instruments in an 8-pin SOIC package, operating from 2.7V to 5.5V supply voltage with 3mA drive capability. It supports hot-swap bus connection and capacitance isolation for extending I2C bus reach in multi-master systems. Available from authorized distributors with in-stock inventory and worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TCA4311D 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
- Dual I2C bus buffer with 2.7V to 5.5V wide supply range enabling mixed-voltage I2C system integration
- 3mA drive strength with capacitance buffering to extend I2C bus length beyond standard 400pF limit
- Hot-swap capable 8-pin SOIC (R-PDSO-G8) with RoHS-compliant plastic packaging for easy PCB integration
Applications
The TCA4311D is designed for I2C bus extension and isolation in systems where multiple devices share a common bus with accumulated capacitance exceeding standard limits. It is commonly used in server management controllers, industrial automation systems, and embedded computing platforms to buffer and isolate I2C segments, enabling reliable communication over longer traces. Its wide 2.7V to 5.5V supply range makes it compatible with both 3.3V and 5V I2C bus environments.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Interface IC Type | BUS BUFFERS |
| JESD-30 Code | R-PDSO-G8 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.7V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | BICMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TCA4311D:
Frequently Asked Questions
What is the supply voltage range of the TCA4311D?
The TCA4311D operates from 2.7V to 5.5V supply voltage, making it compatible with both 3.3V and 5V I2C bus systems. This wide voltage range allows it to interface between different voltage domains in mixed-supply embedded systems.
What is the drive current capability of the TCA4311D?
The TCA4311D provides 3mA bus drive current per channel. This current capability allows it to buffer I2C buses with high capacitive loads, extending the bus beyond the standard 400pF capacitance limit defined by the I2C specification for reliable communication.
What package is the TCA4311D available in?
The TCA4311D is available in an 8-pin Small Outline SOIC package (JESD-30 code R-PDSO-G8) with a plastic/epoxy body. It is RoHS-compliant (Pb-free) and suitable for standard surface-mount PCB assembly in commercial and industrial applications.
Can the TCA4311D be used for hot-swap applications?
Yes, the TCA4311D supports hot-swap bus connection, allowing boards to be inserted and removed from a live I2C bus without disturbing communication on other bus segments. This feature is especially valuable in server and telecom systems requiring hot-pluggable module architectures.
Related Guides
TPS54160DGQR Selection Guide: How to Choose a 60V Step-Down Buck Converter
Complete selection guide for the TPS54160DGQR 60V/1.5A step-down converter. Compare specs, alternatives, and sourcing options for industrial and automotive designs.
May 20, 2026
LMV932MM Dual Low-Voltage CMOS Op-Amp: Application Design Guide
Complete application design guide for the LMV932MM dual rail-to-rail CMOS op-amp: supply decoupling, RRIO design rules, stability, and recommended circuits for 1.8V–5.5V battery-powered systems.
May 20, 2026
TL084CN Equivalent and Replacements: JFET-Input Quad Op-Amp Comparison Guide
Compare TL084CN with TL074, LF347, and LM324 quad op-amps. Pin-compatible equivalents, key specs, and when to choose each for your analog design.
May 20, 2026
TPS386000RGPR Quad Voltage Supervisor: Selection and Sourcing Guide (2025)
Compare TPS386000RGPR with TPS386040RGPR, TPS3700, and TPS3823 voltage supervisors. Key specs, threshold programming, watchdog options, and sourcing tips.
May 20, 2026
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
OPA875IDGKR
Small Outline Packages
Integrated Circuit
SN74HC595NSR
Small Outline Packages
Integrated Circuit
BQ24702PWG4
Small Outline Packages
Integrated Circuit
MSP430FR5723IRHAT
Quad Flat No-Lead
Integrated Circuit
CD74ACT244M96G4
Small Outline Packages
Integrated Circuit
MSP430FR5736IRGET
Quad Flat No-Lead
Integrated Circuit
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”