RS-232 Transceiver Integrates ±70-V Fault Protection

Integrated fault protection is critical for applications in which power and data are transmitted along the same cable, as it prevents user errors and keeps damaged cables from being shorted directly to the interface pins. The MAX13223E is a ±70-V fault-protected, dual-channel RS-232 transceiver. Maxim claims it is the first overvoltage-protected RS-232 transceiver on the market. The integrated fault protection eliminates the need for external fault-protection circuitry, such as polyswitch limiters and zener diodes. The MAX13223E is designed for automotive applications, telematics, base stations, utility meters, industrial equipment, point-of-sale (POS) terminals, and telecom equipment. It operates from +3.0 V to +5.5 V and provides an EIA/TIA-232 and V.28/V.24 communications interface with automatic shutdown and enhanced ESD protection. Fully specified over the -40°C to +85°C extended temperature range, the MAX13223E is available in a 20-pin TSSOP package. Pricing starts at $2.70 in 1000-piece quantities. MAXIM INTEGRATED PRODUCTS, Sunnyvale, CA. (800) 998-8800.