The LTC4311 is a low-voltage I²C/SMBus accelerator designed to boost data transmission speed and reliability for bus loads exceeding the 400pF I²C specification limit
Specifications
Manufacturer:
Analog Devices Inc.
Product Number:
LTC4311IDC#TRMPBF
Description:
IC ACCELERATOR I2C 1CH 6DFN
Highlight:
LTC4311 I²C accelerator IC
,low-voltage SMBus booster IC
,I²C bus speed enhancer IC
Introduction
LTC4311 Low-Voltage I²C/SMBus Accelerator
The LTC4311 is a low-voltage I²C/SMBus accelerator engineered to enhance data transmission speed and reliability for bus loads exceeding the 400pF I²C specification limit. Operating from 1.6V to 5.5V, this device supports up to 400kHz operation and maintains full SMBus compatibility.
This accelerator employs slew-limited pull-up currents to accelerate rising bus transitions while disabling current sources during falling edges and steady low states, significantly improving low-state noise margins and overall system reliability.
Key Features
- Accelerates I²C/SMBus rise times for capacitive loads beyond 400pF
- Supports up to 400kHz bus operation
- Wide supply voltage range: 1.6V to 5.5V
- Auto-detect low-power standby mode
- Ultra-low shutdown current: <5μA
- Slew-limited 5mA pull-up current for fast rising edges
- Improves low-state noise margins
- ±8kV human-body-model ESD ruggedness
- No bus loading when disabled or powered down
- Compact 6-pin DFN (2mm * 2mm) package
Technical Specifications
| Operating Voltage Range | 1.6V to 5.5V |
| Maximum Bus Frequency | 400kHz |
| Shutdown Current | <5μA |
| ESD Protection | ±8kV human-body-model |
| Package | 6-pin DFN (2mm * 2mm) |
| Operating Temperature | -40°C to +85°C |
Primary Applications
- High-capacitance I²C/SMBus systems with multiple devices
- Long-cable I²C/SMBus interconnects
- Portable electronics (cameras, notebooks, smartphones)
- Industrial control and automation systems
- Consumer electronics with extended I²C buses
- Battery-powered devices requiring low power consumption
- Embedded systems with heavy I²C bus loading
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