LTC4315IMS#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4315IMS#PBF is a hot-swappable 2-wire bus buffer manufactured by Analog Devices Inc. in a 12-lead MSOP package. It operates with VCC supply voltages between 2.9V and 5.5V, supporting I2C and SMBus protocols up to 400kHz. The device provides bidirectional buffering with high noise margin (VIL = 0.3 • VCC) and level translation capabilities for 1.5V, 1.8V, 2.5V, 3.3V, and 5V busses. Input capacitance is typically 10pF, while input supply current ranges from 6mA to 10mA at 5.5V. It features precharge circuitry to minimize bus disturbances during insertion.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides bidirectional buffering with high noise margin for interoperability with non-compliant devices
• Supports live board insertion via SDA/SCL precharge to 1V and staggered pin timing
• Includes automatic stuck bus disconnect and recovery generating up to sixteen clock pulses
• Features selectable rise time accelerator strength via the ACC pin

Signal Buffers, Repeaters, Splitters Applications

• Bidirectional buffering to increase fanout on I2C buses
• Live board insertion and removal from backplanes without corruption
• Telecommunications systems including ATCA architectures
• Level translation between 1.5V, 1.8V, 2.5V, 3.3V, and 5V busses

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the IMS suffix indicates the MSOP package and the #PBF suffix denotes lead-free finish when sourcing. Confirm the operating temperature range corresponds to the 'I' grade (-40°C to 85°C). Ensure the specific distributor or manufacturer source matches the required RoHS compliance standards before finalizing procurement orders.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when high noise margin is required to interface with devices driving high VOL levels. Use it for applications requiring capacitance buffering to isolate backplane loads from sensitive peripherals. Consider the LTC4315 for systems needing automatic stuck bus recovery and level translation across multiple standard voltage domains simultaneously.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4315 family of 2-wire bus buffers. It shares functional similarities with the LTC4312 but offers distinct advantages in noise margin and specific hot-swap capabilities. The IMS variant specifically utilizes the MSOP package format, distinguishing it from the DFN package options available within the same product series.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.