1.8V to 4.25V-Powered / True RS-232 Dual Transceiver - Maxim
Description
19-0246; Rev 1; 7/95
1.
8V to 4.
25V-Powered, True RS-232 Dual Transceiver
_______________General Description
The MAX218 RS-232 transceiver is intended for batterypowered 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 RS-232 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, extending battery life in portable systems.
While shut down, all receivers can remain active or can be disabled under logic control, permitting a system incorporating the CMOS MAX218 to monitor external devices while in low-power shutdown mode.
A guaranteed 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.
The MAX218 is available in 20-pin DIP, SO, and SSOP packages.
____________________________Features
BETTER THAN BIPOLAR! o Operates Directly from Two Alkaline, NiCd, or NiMH Cells o +1.
8V to +4.
25V Supply Voltage Range o 120kbps Data Rate o Low-Cost Surface-Mount Components o Meets EIA/TIA-232E Specifications o 1µA Low-Power Shutdown Mode o Both Receivers Active During Low-Power Shutdown o Three-State Receiver Outputs o Flow-Through Pinout o On-Board DC-DC Converters o 20-Pin SSOP, Wide SO, or DIP Packages
MAX218
______________Ordering Information
PART MAX218CPP MAX218CWP MAX218CAP MAX218C/D MAX218EPP MAX218EWP MAX218EAP TEMP.
RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 20 Plastic DIP 20 Wide SO 20 SSOP Dice* 20 Plastic DIP 20 Wide SO 20 SSOP
________________________Applications
Battery-Powered Equipment Computers Printers Periph...
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