LTC4314IGN#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4314IGN#PBF is a hot-swappable, pin-selectable 4-channel 2-wire bus multiplexer with integrated bidirectional buffers. It supports level translation between 1.5V, 1.8V, 2.5V, 3.3V, and 5V busses while isolating upstream capacitance from downstream loads. The device operates on a VCC supply of 2.9V to 5.5V and a VCC2 supply of 2.25V to 5.5V. It features selectable rise time accelerators controlled by the ACC pin, stuck bus disconnect and recovery logic, and ±4kV HBM ESD protection. Packaged in a 20-lead plastic SSOP, it functions within an ambient temperature range of –40°C to +85°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Bidirectional buffering for SDA and SCL lines that isolates upstream bus capacitance from downstream channel capacitances.
• Pin-selectable 1:4 multiplexing capability allowing independent connection control via dedicated ENABLE pins.
• Integrated stuck bus disconnect and recovery mechanism that generates clock pulses to clear faults.
• Configurable rise time accelerators with selectable current strength and activation voltage via the ACC pin.

Signal Buffers, Repeaters, Splitters Applications

• Telecommunications systems including Advanced Telecommunications Computing Architecture (ATCA).
• Live board insertion and removal from backplanes without data or clock bus corruption.
• I2C address expansion and capacitance buffering for bus extension.
• Level translation between different bus voltage domains such as 3.3V and 5V.

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix IGN#PBF corresponds to the 20-lead plastic SSOP package and the industrial temperature grade of –40°C to +85°C. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the component matches the exact part marking LTC4314GN for identification purposes.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring hot-swappable I2C or SMBus connectivity across multiple channels. Consider the VCC2 supply requirement if output-side rise time acceleration is necessary for heavy capacitive loads. Evaluate the total bus current limits against the number of simultaneously enabled channels to ensure signal integrity.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the LTC4314 family of 2-wire bus multiplexers manufactured by Analog Devices Inc. It shares functional similarities with other devices in the series but is distinguished by its specific package type and operating temperature range. The IGN suffix denotes the commercial/industrial grade variant housed in a standard SSOP footprint.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices marketing for alternative components with wider operating temperature ranges or different package configurations.