LTC1345 Datasheet | Linear Technology

LTC1345 Single Supply V.35 Transceiver Features s s s s DESCRIPTIO s s s s s 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 ± 10k V 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 The LTC®1345 is a single chip transceiver that provides the differential clock and data signals for a V.35 interface from a single 5V supply. bined with an external resistor termination network and an LT ®1134A RS232 transceiver for the control signals, the LTC1345 forms a plete 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 ± 10k V ESD protection. The charge pump Features a regulated VEE output using three external 1µF capacitors. , LTC and LT are registered trademarks of Linear Technology Corporation. U APPLICATIO S s s s Modems Telemunications Data Routers TYPICAL APPLICATIO 1µF VCC1 5V 3 1µF 6 LTC1345 1µF 4 2 1 28 Clock and Data Signals for V.35 Interface DTE 27 1µF 26 1 2 3 4 14 13 12 11 10 9 7 8 GND (102) 8 T T RXD (104) T T RXC (115) T T TXC (114) T T SCTE (113) T BI 627T500/1250 TXD (103) T BI 627T500/1250 12 11 10 9 1 2 3 4 5 6 7 28 27 1µF 18 17 16 15 26 25 24 23 22 21 5 9 VCC2 10 14 DX 8 DX 7 DX 6 RX...