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XR32431EBER-F Datasheet(PDF) 1 Page - Exar Corporation |
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XR32431EBER-F Datasheet(HTML) 1 Page - Exar Corporation |
1 / 14 page © 2014 Exar Corporation XR32430/XR32431 3-Driver/5-Receiver Intelligent RS-232 Transceiver with 1.65V-5.5V Interface exar.comXR32430_XR32431 Rev 1A 1 / 13 General Description The XR32430 and XR32431 products are 3 driver/ 5 receiver RS-232 transceivers. The XR32431 features a variable low volt- age logic interface, down to 1.65V. These products are intended for portable or hand-held applications such as notebook and palmtop computers. The XR32430EB and XR32431EB devices feature slew-rate limited outputs for reduced crosstalk and EMI. The XR32430EH and XR32431EH devices are optimized for mid speed applications, with data rates up to 460Kbps. The XR32430EU and XR32431EU devices are optimized for high speed designs with data rates up to 1Mbps, easily meeting the demands of high speed RS-232 applications. The XR32430/31 uses an internal high-efficiency charge-pump power supply that requires only four 0.1μF capacitors in 3.3V operation. This charge pump combined with Exar's driver archi- tecture allow the XR32430/31 to deliver compliant RS-232 perfor- mance from a single power supply ranging from +3.0V to +5.5V. The AUTO ON-LINE® feature allows the device to automatically "wake-up" during a shutdown state when an RS-232 cable is con- nected and a connected peripheral is turned on. Otherwise, the device automatically shuts itself down drawing less than 1μA. FEATURES • Meets true EIA/TIA-232-F Standards from a +3.0V to 5.5V power supply • Interoperable with EIA/TIA-232 and adheres to EIA/TIA-562 down to a +2.7V power source •1.65V to 5.5V Logic Interface VL pin (XR32431) • AUTO ON-LINE circuitry automatically wakes up from a 1 A shutdown • Regulated Charge Pump yields stable RS-232 Outputs regardless of VCC variations • Enhanced ESD Specifications • ±15kV Human Body Model • ±15kV IEC61000-4-2 Air Discharge • ±8kV IEC61000-4-2 Contact Discharge • 250Kbps/460Kbps/1Mbps min transmission rates (speed grades B/H/U) • -40°C to 85°C ambient operating temperature • Lead-free (RoHS 6) package APPLICATIONS • Industrial and Single Board Computers • Industrial and Process Control Equipment • Point-Of-Sales Equipment • Building Security and Automation Ordering Information – page 13 Typical XR32431 Application and Package Pinout T3OUT T2OUT T2IN T3IN R2IN R2OUT R2OUT Shutdown OnLine Status Charge Pump C1+ C1- C2+ C2- V+ V- RS-232 Outputs RS-232 Inputs TTL/CMOS Inputs TTL/CMOS Outputs Auto On-line / Control 5K T1OUT T1IN R1IN R1OUT 5K R4IN R5IN R4OUT R5OUT 5K 5K R3IN R3OUT 5K 0.1 F VCC VCC VL VL 0.1 F 25 26 0.1 F 0.1 F 0.1 F 0.1 F To -P Supervisor Circuit VCC 23 28 29 30 30 26 22 21 20 1 2 3 4 5 6 7 8 12 11 10 18 17 19 15 14 13 24 1 2 3 4 5 17 6 18 R1IN R2IN T1OUT T2OUT R1OUT C1- GND 25 26 27 29 30 31 32 28 R3IN R4IN R5IN T3OUT R2OUT R2OUT XR32431 32 pin QFN (5x5mm) |
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