LTC4311ISC6#TRMPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4311ISC6#TRMPBF 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 supports SMBus protocols. The device provides slew-limited pull-up currents during positive transitions to quickly charge capacitive loads, while disabling currents during negative transitions to improve noise margins. It features an auto-detect standby mode reducing current to 26μA when both lines are high, and a low (<5μA) shutdown mode when disabled. Operating temperature range is -40°C to 85°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Dual active pull-ups with slew-limited current to accelerate rise times on highly capacitive buses
• Auto-detect standby mode reduces supply current when bus lines remain high
• Low power shutdown mode consumes less than 5μA when ENABLE pin is grounded
• High ESD ruggedness rated at ±8kV Human Body Model

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 suffix TRMPBF indicates tape and reel packaging containing 500 pieces per manufacturer documentation. Confirm the ISC6 package designation corresponds to the 6-lead plastic SC70 form factor. Ensure the 'I' grade matches the required industrial operating temperature range of -40°C to 85°C for your application environment.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when bus capacitance exceeds 400pF or when multiple devices degrade signal integrity. Ensure the system voltage falls within the 1.6V to 5.5V range. Verify that the external pull-up resistor values allow the initial slew rate to exceed the detector threshold to activate the boost current. Consider the SC70 package dimensions if board space is constrained.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4311 family of I2C/SMBus accelerators. The 'I' suffix denotes the industrial temperature grade (-40°C to 85°C), while 'C' denotes commercial grade (0°C to 70°C). The 'SC6' indicates the 6-lead SC70 package, whereas 'DC' indicates the 6-lead DFN package. The '#TRMPBF' suffix specifies the mini tape and reel packaging format.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The LTC1694 is a functionally similar SMBus accelerator but operates at higher voltages (2.7V–6V) and has lower performance metrics. When replacing LTC1694 with LTC4311, account for the lower supply voltage range, different enable pin threshold, and stronger pull-up current capabilities.