LTC4313CMS8-2#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4313CMS8-2#PBF is a hot swappable 2-wire bus buffer manufactured by Analog Devices Inc. It supports bidirectional buffering for I2C and SMBus interfaces with a maximum clock frequency of 400 kHz. The device operates within a supply voltage range of 2.9 V to 5.5 V and features a propagation delay of 130 ns. It includes rise time accelerators configured as 2.5 mA current sources to meet rise time specifications in heavily loaded systems. The component is housed in an 8-lead MSOP package, supports two channels, and has an input capacitance of 10 pF. It functions within an operating temperature range of 0°C to +70°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides high noise margin buffering compatible with non-compliant I2C devices driving high VOL levels
• Includes automatic stuck bus disconnect and recovery logic generating up to sixteen clock pulses
• Features precharge circuitry on SDA and SCL pins to minimize bus disturbances during live board insertion

Signal Buffers, Repeaters, Splitters Applications

• Bidirectional buffering to increase fanout in I2C networks
• Live board insertion and removal from backplanes in telecommunications systems
• Level translation between 3.3V and 5V busses
• Capacitance buffering and bus extension in ATCA systems

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix CMS8-2 corresponds to the MSOP-8 package and C-grade temperature range when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the ordering information matches the required lead-free finish and packaging format for production integration.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this variant over the LTC4313-1 if a fixed 2.5 mA rise time accelerator current is preferred over the variable slew-limited switch mode. Verify that the 0°C to 70°C commercial temperature range meets system requirements. Ensure the 8-lead MSOP footprint is available in the PCB layout design.

Signal Buffers, Repeaters, Splitters Part Context

This component belongs to the LTC4313 family of 2-wire bus buffers. It shares core functionality with the LTC4313-1 and LTC4313-3 but differs in its rise time accelerator configuration and supported voltage levels. The CMS8-2 designation specifically identifies the commercial grade version in the MSOP-8 package.

Signal Buffers, Repeaters, Splitters Replacement Considerations

LTC4313CMS8-1#PBF offers similar buffering with a different RTA configuration. LTC4313IMS8-2#PBF provides the same electrical characteristics but extends the operating temperature range to -40°C to 85°C.