SP336E

SP336E 3.3V / 5V PROGRAMMABLE RS-232/RS-485/RS-422 SERIAL TRANSCEIVER

GENERAL DESCRIPTION

FEATURES

3.3V or 5V Single Supply Operation Robust ±15kV ESD Protection (IEC 61000-4-2 Air

The SP336E is a monolithic serial multi-transceiver device that contains both RS-232 and RS-485/RS- 422 line drivers and receivers. The configuration of the SP336E can be reconfigured into eight operating modes including RS-232 only (4TX/4RX), RS-485/ RS-422 only (2TX/2RX) full or half duplex, two RS- 232/RS-485 mixed modes. two shutdown modes and a diagnostic loop-back mode. Modes may be selected at any time by changing the logic state of the three MODE pins. The device can implement a dual- mode serial port, mixed mode ports or as an interface signal translator. The MaxLinear charge pumps deliver true RS-232 driver output voltages from a single power supply at either 3.3V or 5V. The SP336E requires only four 0.1F capacitors for charge pump. A slew rate control pin configures driver outputs for either high data rate or slew-controlled data rates. Slew-controlled outputs minimize problems with reflections and ringing on long or un-terminated cables.