LTC4315IMS#TRPBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4315IMS#TRPBF is a hot-swappable 2-wire bus buffer manufactured by Analog Devices Inc. in a 12-lead MSOP package. It supports input supply voltages (VCC) from 2.9V to 5.5V and output accelerator supplies (VCC2) from 2.25V to 5.5V. The device operates at frequencies up to 400kHz with an input leakage current of ±10μA and input capacitance of 10pF. It provides rise time accelerators with pull-up currents ranging from 1.5mA to 40mA depending on the ACC pin state. The component ensures high noise margin with VIL = 0.3 • VMIN and includes stuck bus disconnect and recovery logic triggered after a 45ms timeout.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides bidirectional buffering for I2C, SMBus, and PMBus protocols while isolating backplane capacitance from card loads.
• Features high noise margin compatibility allowing interoperability with non-compliant devices driving high VOL levels.
• Includes automatic stuck bus detection and recovery mechanisms that generate clock pulses to free locked buses.
• Supports live board insertion via precharge circuits that minimize bus disturbances during connection.

Signal Buffers, Repeaters, Splitters Applications

• Capacitance buffering and bus extending in telecommunications systems including ATCA
• Level translation between 1.5V, 1.8V, 2.5V, 3.3V, and 5V busses
• Preventing SDA and SCL corruption during live board insertion and removal from backplanes

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing this component. Confirm the IMS designation corresponds to the 12-lead plastic MSOP package variant. Ensure the temperature grade matches the required operational range for your specific application environment before finalizing procurement orders.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring isolation between high-capacitance backplanes and lower-capacitance peripheral cards. Consider the VCC and VCC2 supply requirements if level translation between different voltage domains is necessary. Evaluate the need for stuck bus recovery features based on the reliability requirements of the target communication bus infrastructure.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4315 series of 2-wire bus buffers. It shares functional similarities with other hot-swap interface ICs but is distinct in its specific high noise margin specifications and integrated stuck bus recovery logic. The MSOP package offers a compact footprint suitable for dense PCB layouts compared to larger DFN alternatives.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by comparing pin configurations, electrical characteristics, and thermal performance against alternative bus buffer solutions.