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SP336ECT-L Datasheet(PDF) 1 Page - Exar Corporation |
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SP336ECT-L Datasheet(HTML) 1 Page - Exar Corporation |
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1 / 30 page  Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com SP336E 3.3V - 5V PROGRAMMABLE RS-232/RS-485/RS-422 SERIAL TRANSCEIVER MARCH 2010 REV. 1.0.0 GENERAL DESCRIPTION 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 Exar 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 μF 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. All RS- 485 receivers or transceivers feature high impedance which allow up to 256 transceivers on a shared bus. When configured in RS-485/RS-422 mode, each driver may be individually enabled or put into tri-state, simplifying use on shared buses or bidirectional communication. All receivers have advanced failsafe protection to prevent oscillation when inputs are un- connected. In RS-232 mode each receiver input has a 5k ohm pull-down to ground. Differential Receivers will default to output logic 1 if inputs are floating, shorted or open but terminated. All driver outputs and receiver inputs are protected against ESD strikes up to +/-15,000 volts. FEATURES • 3.3V or 5V Single Supply Operation • Robust +/-15kV ESD Protection (IEC 61000-4-2 Air Gap) • Software Selectable Mode Selection • Up to 4 Drivers, 4 Receivers RS-232/V.28 • Up to 2 Drivers, 2 Receivers RS-485/RS-422 ■ Full or Half Duplex Configurations ■ 1/8th Unit Load, up to 256 receivers on bus • Mixed RS-232/RS-485 modes • Pin Programmable Slew Rate for Reduced EMI • RS-485 Advanced Failsafe on Open, Short or Terminated Lines • Diagnostic Loop-Back Function • 28 Pin SOIC or TSSOP Packaging TYPICAL APPLICATIONS • Factory Automation Equipment • Security Networks • Industrial/Process Control Networks • Point-Of-Sales Equipment • Gaming Machines • Serial Protocol Translators (ex. RS-232 to RS-485/ RS-422) • Embedded Industrial PC’s • Building Environmental Control Systems (ex. HVAC) • Cable Repeaters / Port Extenders / Hubs |
Similar Part No. - SP336ECT-L |
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Similar Description - SP336ECT-L |
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