LTC4311IDC#TRMPBF, Interface - Specialized s V I2C/SMBus Accelerator

LTC®4311 is a low voltage I2C/SMBus accelerator designed to enhance data transmission speed and reliability for bus loading conditions well beyond the 400pF I2C specification limit. This operates at supply voltages from 1.6V to 5.5V and is also compatible with SMBus. It allows multiple device connections or a longer, more capacitive interconnect, without compromising slew rates or bus performance, by using two slew limited pull-up currents. During positive bus transitions, this provides slew limited pull-up currents to quickly slew the I2C or SMBus lines to the bus pull-up voltage. During negative transitions or steady DC levels, the currents are disabled to improve negative slew rate, and improve low state noise margins. An auto detect standby mode reduces supply current if both SCL and SDA are high. Typical applications are notebook and palmtop computers, portable instruments, battery chargers, industrial controls, TV/Video products, ACPI SMBus interface.

• Improves I2C bus rise time transition
• Ensures data integrity with multiple devices on the I2C bus
• Improves low state noise margin
• Auto detect low power standby mode, low (<5µA) supply current shutdown
• Does not load bus when disabled or powered down
• Strong slew limited pull-up current
• ±8kV human body model ESD ruggedness
• 6-lead (2mm × 2mm) plastic DFN package
• Temperature rating range from -40°C to 85°C