Analog Devices Inc./Maxim Integrated

The LTC1385 is an ultra-low power, 2-driver/2-receiver EIA / TIA-562 transceiver which operates from a single 3.3V supply. The charge pump requires only four spacesaving 0.1µF capacitors.The transceiver operates in one of three modes: Normal, Driver Disable or Shutdown. In the Normal mode, ICCis only 200µA in the unloaded condition. In the Driver Disable mode, the charge pump is turned off, the driver outputs are forced into three-state, both receivers are kept active, and ICCdrops to 35µA. In the Shutdown mode, everything is turned off and ICCdrops to 0.2µA.The LTC1385 is fully compliant with all data rate and overvoltage EIA/ TIA-562 specifications. The transceiver can operate up to 120kbaud with a 1000pF, 3kΩ load. Both driver outputs and receiver inputs can be forced to ±25V without damage, and can survive multiple ±10kV ESD strikes.ApplicationsNotebook ComputersPalmtop Computers

The LTC1391 is a high performance CMOS 8-to-1 analog multiplexer. It features a serial digital interface that allows several LTC1391s to be daisy-chained together, increasing the number of MUX channels available using a single digital port.The LTC1391 features a typical RONof 45Ω, a typical switch leakage of 50pA and guaranteed break-beforemake operation. Charge injection is ±10pC maximum. All digital inputs are TTL and CMOS compatible when operated from single or dual supplies. The inputs can withstand 100mA fault current.The LTC1391 is available in 16-pin PDIP, SSOP and narrow SO packages. For applications requiring 2-way serial data transmission, see the LTC1390 data sheet.ApplicationsData Acquisition SystemsCommunication SystemsSignal Multiplexing/Demultiplexing