LT LTC4307IDD-1#PBF

Буфер, ускоритель2-проводная шина2-проводная шина400 кГц2

Overview

The LTC4307IDD hot swappable, 2-wire bus buffer allows I/O card insertion into a live backplane without corruption of the data and clock busses. The LTC4307IDD provides bidirectional buffering, keeping the backplane and card capacitances isolated. Low offset and high VOL tolerance allows multiple devices to be cascaded on the clock and data busses. If SDAOUT or SCLOUT are low for 30ms, the LTC4307IDD will automatically break the bus connection. At this time the LTC4307IDD automatically generates up to 16 clock pulses on SCLOUT in an attempt to free the bus. A connection will resume if the stuck bus is cleared.

During insertion, the SDA and SCL lines are pre-charged to 1V to minimize bus disturbances. When driven high, the ENABLE input allows the LTC4307IDD to connect after a stop bit or bus idle. Driving ENABLE low breaks the connection between SDAIN and SDAOUT, SCLIN and SCLOUT. READY is an open-drain output which indicates that the backplane and card sides are connected.

Features

Applications

• Clock Distribution
• Protection Switching
• Loopback
• Clock Distribution
• Servers
• Industrial PCs
• Test Equipment
• Desktop Computers
• Laptop Computers (for External Video Cards)
• Communications Switchers