MAX3160E

Single Supply Operation from +3V to +5.5V
ESD Protection ±15kV Human Body Model
Pin-Selectable as 2Tx/2Rx RS-232 or Single RS-485/RS-422 (MAX3160E/MAX3161E)
2Tx/2Rx RS-232 and Single RS-485/RS-422(MAX3162E)
Pin-Selectable RS-232/RS-485 Transmitter Slew Rates Reduce EMI
10Mbps RS-485 and 1Mbps RS-232 Data Rates
Pin-Selectable Half-Duplex or Full-Duplex
    RS-485/RS-422 Operation (MAX3160E/MAX3161E)
    RS-485/RS-422 True Fail-Safe Receivers
10nA Shutdown Supply Current
1/8-Unit Load Allows up to 256 Transceivers on the Bus

The MAX3160E/MAX3161E/MAX3162E are programma-ble RS-232/RS-485/RS-422 multiprotocol transceivers.The MAX3160E/MAX3161E are pin programmable as a 2Tx/2Rx RS-232 interface or a single RS-485/RS-422 transceiver. The MAX3162E is configured as a 2Tx/2RxRS-232 interface, and a single RS-485/RS-422 trans-ceiver simultaneously.

The MAX3160E/MAX3161E/MAX3162E feature enhanced electrostatic discharge (ESD) protection. All of the trans-
mitter outputs and receiver inputs are protected to ±15kV using the Human Body Model.All devices incorporate a proprietary low-dropout trans-
mitter output stage, and an on-board dual charge pumpto allow RS-232- and RS-485-/RS-422-compliant perfor-mance from a +3V to +5.5V supply. The receivers feature true fail-safe circuitry that guarantees a logic-high receiver output when the receiver inputs are open or shorted.
These devices also feature pin-selectable transmitter slew rates for RS-232 and RS-485/RS-422 modes. Slewrate limiting minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. Disabling slew-rate limiting allows these devices to transmit at data rates up to 10Mbps in RS-485/RS-422 mode and up to 1Mbps in RS-232 mode. The MAX3160E/MAX3161E/MAX3162E
feature a 10nA shutdown mode, short-circuit limiting, and thermal shutdown circuitry to protect against excessive power dissipation.

The MAX3160E/MAX3162E offer a flow-through pin-out that facilitates board layout. The MAX3160E/MAX3161E/MAX3162E are available in tiny SSOP pack-ages and operate over the commercial and extendedtemperature ranges.