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• The SN75LV4737A consists of three line drivers, five line receivers, and a charge-pump circuit.　It provides the electrical interface between an asynchronous communication controller and the serial-port connector, and meets the requirements of TIA/EIA-232-F.　This combination of drivers and receivers matches those needed for the typical serial port used in an IBM PC/AT or compatibles.　The charge pump and five small external capacitors allow operation from a single 3.3-V supply, and four capacitors allow operation from a 5-V supply.　The device has flexible control options for power management when the serial port is inactive.　A common disable for all of the drivers and receivers is provided with the active-high STBY input.　The active-low EN ¥input is an enable for one receiver to implement a wake-up feature for the serial port.　All the logic inputs can accept signals from controllers operating from a 5-V supply, even though the SN75LV4737A is operating from 3.3 V.　The SN75LV4737A is characterized for operation over the temperature range of 0°C to 70°C.　Single-Chip and Single-Supply Interface for IBM PC/ATTM Serial PortMeets or Exceeds the Requirements of TIA/EIA-232-F and ITU v. 11 StandardsOperates With 3.3-V or 5-V SuppliesOne Receiver Remains Active During Standby (Wake-up Mode) Designed to Operate at 128 kbit/s Over a 3-m CableLow Standby Current...5 uA MaxESD Protection on RS-232 Pins Meets or Exceeds 4 kV (HBM) and 1.5 kV (HBM) on All Pins Per MIL-STD-883, Method 3015External Capacitors...0.1 uF(VCC = 3.3 V...Five External Capacitors) (VCC = 5 V...Four External Capacitors) Accepts 5-V Logic Input With 3.3-V SupplyApplicationsRS-232 InterfaceBattery-Powered Systems PDAsNotebook, Laptop, and Palmtop PCsExternal Modems and Hand-Held TerminalsPackaged in Shrink Small-Outline Package
• Drivers Per Package3
• Receivers Per Package5
• Logic Voltage(Min)(V)3.3
• Data Rate(Max)(kbps)128
• Main Supply Voltage(Nom)(V)3.3
• 5
• ESD HBM(kV)4
• Operating Temperature Range(C)0 to 70
• Pin/Package28SSOP
• RoHS Compliance
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