MAX3243CDBR MAX3243CPWR MAX3243ECDBR MAX3243ECPWR MAX3243ECRHBR MAX3243EIRHBR MAX3243IPWR MAX3243EIPWR UART Interface IC

1 Features

• Operates With 3-V to 5.5-V VCC Supply

• Single-Chip and Single-Supply Interface

  for IBMTM PC/ATTM Serial Port

• RS-232 Bus-Pin ESD Protection of
  ±15 kV Using Human-Body Model (HBM)

• Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU V.28 Standards

• Three Drivers and Five Receivers

• Operates Up To 250 kbit/s

• Low Active Current: 300 μA Typical

• Low Standby Current: 1 μA Typical

• External Capacitors: 4 × 0.1 μF

• Accepts 5-V Logic Input With 3.3-V Supply

• Always-Active Noninverting Receiver Output (ROUT2B)

• Operating Temperature

  • – MAX3243C: 0°C to 70°C

  • – MAX3243I: –40°C to 85°C

• Serial-Mouse Driveability

• Auto-Powerdown Feature to Disable Driver Outputs When No Valid RS-232 Signal Is Sensed

2 Applications

• Battery-Powered Systems

• Tablets
• Notebooks
• Laptops

• Hand-Held Equipment

3 Description

The MAX3243 device consists of three line drivers, five line receivers which is ideal for DE-9 DTE interface. ±15-kV ESD (HBM) protection pin to pin (serial- port connection pins, including GND). Flexible power features saves power automatically. Special outputs ROUT2B and INVALID are always enabled to allow checking for ring indicator and valid RS232 input.

Device Information