LTC1345 Single Supply V.35 Transceiver

Product Details

The LTC1345 is a single chip transceiver that provides the differential clock and data signals for a V.35 interface from a single 5V supply. Combined with an external resistor termination network and an LT1134A RS232 transceiver for the control signals, the LTC1345 forms a complete low power DTE or DCE V.35 interface port operating from a single 5V supply.

The LTC1345 features three current output differential transmitters, three differential receivers, and a charge pump. The transceiver can be configured for DTE or DCE operation or shut down using two Select pins. In the Shutdown mode, the supply current is reduced to 1µA.

The transceiver operates up to 10Mbaud. All transmitters feature short-circuit protection and a Receiver Output Enable pin allows the receiver outputs to be forced into a high impedance state. Both transmitter outputs and receiver inputs feature ±10kV ESD protection. The charge pump features a regulated V_EE output using three external 1µF capacitors.

Applications

Modems
Telecommunications
Data Routers

Features and Benefits

Single Chip Provides All V.35 Differential Clock and Data Signals
Operates From Single 5V Supply
Software Selectable DTE or DCE Configuration
Transmitters and Receivers Will Withstand Repeated ±10kV ESD Pulses
Shutdown Mode Reduces Icc to 1µA Typ
10MBaud Transmission Rate
Transmitter Maintains High Impedance When Disabled, Shut Down, or with Power Off
Meets CCITT V.35 Specification
Transmitters are Short-Circuit Protected