(Hong Kong)
Product Summary
The SP336EEY-LTR is a programmable RS-232/RS-485/RS-422 serial transceiver. The SP336EEY-LTR 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 SP336EEY-LTR 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 SP336EEY-LTR requires only four 0.1μF 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.
Parametrics
SP336EEY-LTR absolute maximum ratings: (1)Supply Voltage VCC : +6.0V; (2)Receiver Input VIN (DC Input Voltage) : -15V to +15V; (3)Input Voltage at TTL input Pin : -0.3V to Vcc + 0.5V; (4)Driver Output Voltage (from Ground) : -7.5V to +12.5V; (5)Short Circuit Duration, TXout to GND : Continuous; (6)Storage Temperature Range : -65℃ to + 150℃; (7)Lead Temperature (soldering, 10s) : +300℃; (8)Power Dissipation 28-pin SOIC-W(derate 17mW/℃ above +70℃) : 938mW; (9)Power Dissipation 28-pin TSSOP (derate 12mW/℃ above +70℃) : 657mW.
Features
SP336EEY-LTR features: (1)3.3V or 5V Single Supply Operation; (2)Robust +/-15kV ESD Protection (IEC 61000-4-2 Air Gap); (3)Software Selectable Mode Selection; (4)Up to 4 Drivers, 4 Receivers RS-232/V.28; (5)Mixed RS-232/RS-485 modes; (6)Pin Programmable Slew Rate for Reduced EMI; (7)RS-485 Advanced Failsafe on Open, Short or Terminated Lines; (8)Diagnostic Loop-Back Function; (9)28 Pin SOIC or TSSOP Packaging.
Diagrams
