ANALOG DEVICES MAX218CAP+

The MAX218CAP+ is a 1.8V to 4.25V powered, true RS232 dual transceiver in 20 pin SSOP package. This transceiver is intended for battery powered EIA/TIA-232E and V.28/V.24 communications interfaces that need two drivers and two receivers with minimum power consumption. It provides a wide 1.8V to 4.25V operating voltage range while maintaining true RS232 and EIA/TIA-562 voltage levels. The MAX218 runs from two alkaline, NiCd or NiMH cells without any form of voltage regulator. A shutdown mode reduces current consumption to 1µA. While shut down, both receivers can remain active or can be disabled under logic control, permitting a system that incorporates the CMOS MAX218 to monitor external devices. The 120Kbps data rate provides compatibility with popular software for communicating with personal computers. Three state drivers are provided on all receiver outputs so that multiple receivers generally of different interface standards can be wire-ORed at the UART.