Maxim Integrated MAX3313EUB+ Line Transceiver, 10-Pin μMAX

The MAX3311/MAX3313 are low-power, +5V transceivers. Both devices have one transmitter and one receiver. The transceivers have a proprietary low-dropout transmitter output stage. These devices require only three 0.1μF capacitors.
The MAX3311 features a 1μA shutdown mode. In shutdown the device turns off the charge pump, pulls V- to ground, and the transmitter output is disabled. The MAX3313 features an active-low INVALID output that asserts high when an active RS-232 cable signal is connected, signaling to the host that a peripheral is connected to the communication port.

1μA Low-Power Shutdown (MAX3311)
Active-low INVALID Output (MAX3313)
Receiver Active in Shutdown (MAX3311)
Single Transceiver (1Tx/1Rx) in 10-Pin μMAX
Applications
Cell Phones
Digital Still Cameras
Digital Television (Receivers, Set-Top Boxes)
Global Positioning Systems (GPS)
Modems
Pagers
Pen Entry Palmtops
Point-of-Sale Terminals