LTC4311IDC#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4311IDC#TRPBF is a dual I2C active pull-up accelerator designed to enhance data transmission speed and reliability for bus loading conditions exceeding the standard 400pF specification limit. It operates at supply voltages from 1.6V to 5.5V and is compatible with SMBus. The device provides slew-limited pull-up currents during positive transitions to quickly slew lines, while disabling currents during negative transitions to improve noise margins. It features an auto-detect standby mode reducing current when both SCL and SDA are high, and a low (<5μA) shutdown mode. Maximum operating frequency is 400kHz.

Signal Buffers, Repeaters, Splitters Feature Summary

• Improves I2C bus rise time transition
• Ensures data integrity with multiple devices on the I2C bus
• Provides strong slew limited pull-up current
• Features ±8kV human body model ESD ruggedness

Signal Buffers, Repeaters, Splitters Applications

• Notebook and Palmtop Computers
• Portable Instruments
• Battery Chargers
• Industrial Controls
• TV/Video Products
• ACPI SMBus Interface

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific package type and temperature grade against the datasheet before procurement. Confirm that the ordering suffix matches the required tape and reel quantity and lead-free finish specifications. Ensure the component meets the necessary RoHS compliance standards for the intended application environment.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when bus capacitance exceeds standard limits or when multiple devices require reliable signal integrity. Consider the wide supply voltage range and low power consumption features for battery-operated systems. Evaluate the need for active pull-up acceleration versus passive resistor solutions based on rise time requirements.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4311 family of low voltage I2C/SMBus accelerators. It is manufactured by Analog Devices Inc. (formerly Linear Technology). The IDC suffix indicates a 6-lead plastic DFN package with dimensions of 2mm x 2mm. The TRPBF suffix denotes tape and reel packaging with a lead-free finish.

Signal Buffers, Repeaters, Splitters Replacement Considerations

LTC1694/LTC1694-1: Functionally similar but lacks enable pin and has higher standby current. LTC4300A series: Hot-swappable buffers with different interface capabilities. LTC4301: Supply independent hot swappable buffer.