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5-V Multichannel RS-232 Line Driver/Receiver with +/-15-kV ESD Protection


Package | PIN: DB | 28
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.07
10-24 $1.86
25-99 $1.73
100-249 $1.50
250-499 $1.39
500-749 $1.16
750-999 $0.96
1000+ $0.88


  • RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)
  • Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards
  • Operates at 5-V VCC Supply
  • Four Drivers and Five Receivers
  • Operates Up To 120 kbit/s
  • Low Supply Current in Shutdown Mode... 1 µA Typical
  • External Capacitors... 4 × 0.1 µF
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • Applications
    • Battery-Powered Systems, PDAs, Notebooks, Laptops, Palmtop PCs, and Hand-Held Equipment

Texas Instruments  MAX211IDBR

The MAX211 device consists of four line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). 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. The charge pump and four small external capacitors allow operation from a single 5-V supply. The devices operate at data signaling rates up to 120 kbit/s and a maximum of 30-V/µs driver output slew rate.

The MAX211 has both shutdown (SHDN) and enable control (EN)\. In shutdown mode, the charge pumps are turned off, V+ is pulled down to VCC, V– is pulled to GND, and the transmitter outputs are disabled. This reduces supply current typically to 1 µA. EN\ is used to put the receiver outputs into the high-impedance state to allow wired-OR connection of two RS-232 ports. It has no effect on the RS-232 drivers or the charge pumps.