MAX3243EIPWR

Product Summary

The MAX3243EIPWR consists of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD (HBM and IEC61000-4-2, Air-Gap Discharge) and ±8-kV ESD (IEC61000-4-2, Contact Discharge) protection on serial-port connection pins. The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. This combination of drivers and receivers matches that needed for the typical serial port used in an IBM PC/AT, or compatible. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. In addition, the device includes an always-active noninverting output (ROUT2B), which allows applications using the ring indicator to transmit data while the MAX3243EIPWR is powered down. The MAX3243EIPWR operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/ms driver output slew rate.

Parametrics

MAX3243EIPWR absolute maximum ratings: (1)VCC Supply voltage range: –0.3 to 6 V; (2)V+ Positive output supply voltage range: –0.3 to 7 V; (3)V– Negative output supply voltage range: 0.3 to –7 V; (4)V+ – V– Output supply voltage difference: 13 V; (5)Tstg Storage temperature range: –65 to 150 °C; (6)II Input leakage current FORCEOFF, FORCEON: ±0.01 to ±1 mA; (7)tsk(p)Pulse skew(3)CL = 150 pF to 2500 pF, RL = 3 kW to 7 kW: 100 ns.

Features

MAX3243EIPWR features: (1)Meets or Exceeds Requirements of TIA/EIA-232-F and ITU v.28 Standards; (2)Operates With 3-V to 5.5-V VCC Supply; (3)Always-Active Noninverting Receiver Output (ROUT2B); (4)Designed to Transmit at a Data Rate up to 500 kbit/s; (5)Low Standby Current . . . 1 mA Typ; (6)External Capacitors . . . 4 ´ 0.1 mF; (7)Accepts 5-V Logic Input With 3.3-V Supply; (8)Designed to Be Interchangeable With Maxim MAX3243E; (9)Serial-Mouse Driveability; (10)Auto-Powerdown Feature to Disable Driver Outputs When No Valid RS-232 Signal Is Sensed.

Diagrams