ANALOG DEVICES LTC1694-1CS5#TRPBF Specialized Interface, I2C, SMBus

LTC1694-1 is a SMBus/I²C accelerator. It is a dual SMBus active pull-up designed to enhance data transmission speed and reliability under all specified SMBus loading conditions. It is also compatible with the Philips I²C bus. It allows multiple device connections or a longer, more capacitive interconnect, without compromising slew rates or bus performance, by supplying a high pull-up current of 2.2mA to slew the SMBus or I²C lines during positive bus transitions. During negative transitions or steady DC levels, the device sources zero current. External resistors, one on each bus line, trigger the device during positive bus transitions and set the pull-down current level. These resistors determine the slew rate during negative bus transitions and the logic low DC level. It is widely used in application such as notebook and palmtop computers, portable instruments, battery chargers, industrial control application, TV/video products, ACPI SMBus interface etc.

• Ensures data integrity with multiple devices on the SMBus/I²C
• Improves low state noise margin
• Wide supply voltage range is 2.7V to 6V
• Parallel multiple devices for increased drive
• Supply current is 45µA typical
• Input threshold voltage is 0.65V typical
• SMBus maximum operating frequency is 100KHz maximum
• Slew rate detector threshold is 0.2V/µs typical
• Operating temperature is 0°C to 70°C
• Package style is 5-lead plastic TSOT-23

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party