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LTC4300A-2CMS8

Name: LTC4300A-2CMS8
Rating: 4.7 (12 reviews)

IC ACCELERATOR I2C HOTSWAP 8MSOP

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Mfr。パート #LTC4300A-2CMS8
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仕様

Part Status	Discontinued at DigiKey
Base Product Number	LTC4300A
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

概要

Description

The LTC4300A-2CMS8 is a dual, I2C-controlled hot‑swap/power‑switch controller from Linear Technology (Analog Devices). It manages two high‑side switches to safely power up/down two rails, with programmable inrush/soft‑start and current limit per channel. Features typically include fault/status reporting over I2C, open-load and overcurrent protection, and reverse-current protection. The -CMS8 suffix denotes an 8‑pin compact package (CMS8). It’s commonly used for hot‑plug capable boards in servers, telecom, and embedded systems, where you need controlled power sequencing, protection, and visibility of two rails. For exact electrical specs (voltage/current ranges, I2C address options, timing), refer to the official datasheet.

Features

Here are the key features of the LTC4300A-2CMS8 (8‑lead MSOP, industrial temp):
- Dual bidirectional I2C/SMBus level translators (two bus channels)
- Independent supply rails for each side (VCCA and VCCB) with wide operating range
- Automatic direction sensing for seamless data flow between buses
- I2C speeds up to 1 MHz supported (standard/fast-mode formats)
- Voltage level translation between different bus voltages
- Isolation when one side is unpowered to prevent back-powering
- Robust protection: overvoltage/short-circuit protection on both sides
- Low quiescent current and fast transients for efficiency
- EsD protection and suitable for harsh/industrial environments
- Simple, compact 8-pin CMS8 package for easy integration
- Typical applications: I2C level shifting, bus isolation, and safe hot-swap-style interfacing
Note: For exact electrical characteristics (voltage ranges, maximum speeds, current limits, timing, and temp range), please consult the LTC4300A-2 datasheet.

Package

Package type: 8-pin MSOP (MSOP-8) plastic package. The CMS8 suffix denotes the MSOP-8 package.

Pinout

- Pin count: 8 pins (CMS8 package)
- Function: I2C/SMBus bus buffer and level shifter (I2C repeater) that isolates and buffers two I2C buses, enabling bidirectional communication with level translation and protection between sides.

Manufacturer

Manufacturer: Analog Devices, Inc. (ADI). ADI is a multinational American semiconductor company that designs and manufactures analog, mixed-signal and DSP integrated circuits; it acquired Linear Technology (the original maker of LTC parts) in 2017.

Application

Application areas: Dual-port I2C/SMBus bus isolation and protection for hot-swappable or multi-supply systems; level shifting between different rails; current limiting and fault protection on I2C lines; power-fault tolerant interfaces in backplanes, servers, automotive and industrial equipment; battery-powered devices with low quiescent current; I2C bus expansion/isolation for mixed-domain designs.