LTC4300-2CMS8

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LTC4300-2CMS8

IC ACCELERATOR I2C HOTSWAP 8MSOP

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  • Mfr. Parte #LTC4300-2CMS8
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Especificaciones

Part Status Discontinued at DigiKey
Base Product Number LTC4300-2
Type Buffer, Accelerator
Applications I2C - Hotswap
Input 2-Wire Bus
Output 2-Wire Bus
Data Rate (Max) 400kHz
Number of Channels 2
Capacitance - Input 10 pF
Voltage - Supply 2.7V ~ 5.5V
Current - Supply 5.1mA
Operating Temperature 0°C ~ 70°C
Mounting Type Surface Mount
Package 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package 8-MSOP
Packaging Tube

Descripción general

Description

The LTC4300-2CMS8 is a dual bidirectional I2C/SMBus buffer and level translator with power-down isolation from Linear Technology (now Analog Devices). It sits between two I2C buses (side A and side B), each potentially on a different supply, and translates/buffers signals so devices on different voltage rails can communicate. It uses automatic direction sensing, provides isolation when one side is unpowered, and typically requires pullups on both sides. The -2 denotes two channels/buses. The CMS8 package is an 8-pin surface-mount package. It’s useful for interfacing, for example, a 3.3V microcontroller with 5V I2C peripherals, extending a bus across voltage domains, or isolating bus segments during power-down. For exact electrical specs and timing, refer to the LTC4300-2 datasheet.

Features

Key features of LTC4300-2CMS8 (dual I2C bus buffer/isolation, 8-pin CMS8):
- Dual, bidirectional I2C bus channels with automatic direction sensing
- Level translation between two voltage domains (independent sides)
- Hot-swap/isolation to prevent back-powering during power sequencing
- Fault protection: current limiting and ESD protection on SCL/SDA
- I2C speeds up to 400 kHz (Fast-mode) supported
- Operating over a wide temperature range (-40°C to 125°C)
- Small 8-pin CMS8 package with RoHS-compliant construction
- Low quiescent current for power-sensitive applications
Note: For exact electrical specs (voltage ranges, acceptable I/O levels, current limits, etc.), please refer to the LTC4300-2 datasheet.

Package

Package type: CMS8 is an 8-pin small-outline package (MSOP-style).

Pinout

- Pin count: 8 pins (CMS8, MSOP-8 package)
- Function: I2C/SMBus bus protector and buffer. It isolates and protects an I2C bus (enabling hot-swap operation and fault protection on the bus lines).

Manufacturer

Manufacturer: Analog Devices, Inc. (ADI).
Company type: A US-based multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits. The LTC4300-2 originated from Linear Technology, which ADI acquired in 2017.

Application

Application areas: Hot‑swap/power‑path control for I2C/PMBus devices; protection and sequencing of I2C peripherals during card insertion/removal; current limiting and fault protection with controlled turn‑on. Typical uses include servers and telecom backplanes, industrial control and instrumentation, data acquisition systems, and automotive electronics requiring reliable I2C bus protection and power sequencing.

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