MAX3430CSA+

The MAX3430CSA+ is one member of the MAX3430 series.The MAX3430 fault-protected RS-485 transceiver features ±80V protection from overvoltage signal faults on communication bus lines. Each device contains one driver and one receiver, and the output pins can withstand faults,with respect to ground, of up to ±80V. Even if the faults occur when the transceiver is active, shut down, or powered off, the device will not be damaged.

Features of the MAX3430CSA+ are:(1)±80V fault protection; (2)±12kV ESD protection; (3)+3.3V operation; (4)internal slew-rate limiting; (5)250kbps data rate; (6)allows Up to 128 transceivers on the bus; (7)-7V to +12V common-mode input voltage range; (8)true fail-safe inputs; (9)hot-swap input structure on DE; (10)available in 8-pin SO and PDIP packages.The MAX3430 operates from a 3.3V supply and features a slew-rate-limited driver that minimizes EMI and reduces reflections caused by improperly terminated cables, allowing errorfree data transmission at data rates up to 250kbps. The MAX3430 has a 1/4-unit-load receiver input impedance allowing up to 128 transceivers on a single bus and features fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open

The absolute maximum ratings of the MAX3430CSA+ can be summarized as:(1)storage temperature range:-65 to 150;(2)lead temperature range:300;(3)Vcc:5V;(4)RO:-0.3 to Vcc+0.3V;(5)power dissipation:471W.Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.The MAX3430 transceiver provides bidirectional data communications on multipoint bus transmission lines. Figure 10 shows a typical network applications circuit.The RS-485 standard covers line lengths up to 4000ft.The signal line must be terminated at both ends in its characteristic impedance, and stub lengths off the main line kept as short as possible.