±15kV ESD-Protected, Quad, Low-Power RS-232 Line Driver


The MAX1488E quad, low-power line driver is designed for EIA/TIA-232, EIA/TIA-562, and CCITT V.28 communications in harsh environments. Each transmitter output is protected against ±15kV electrostatic discharge (ESD) shocks. The inputs are TTL and CMOS compatible with minimal loading. The outputs feature internally controlled slew-rate limiting and current limiting. This device has a guaranteed 120kbps data rate. Power-supply current is less than 180µA over a ±4.5V to ±13.2V supply voltage range.

The MAX1488E is pin compatible with the MC1488, MC14C88, SN75188, SN75C188, DS1488, and DS14C88. It is available in 14-pin plastic DIP and SO packages.
MAX1488E: Typical Operating Circuit MAX1488E: Typical Operating Circuit Enlarge+

Key Features

  • ESD Protection:
    • ±15kV—Human Body Model
    • ±6kV—IEC801-2, Contact Discharge
    • ±15kV—IEC801-2, Air-Gap Discharge
  • Latchup Free, Even During an ESD Event
  • Low 85µA Supply Current from IEE or ICC
  • Guaranteed 120kbps Data Rate
  • No External Capacitors Required for Slew-Rate Limiting
  • Pin Compatible with MC1488, MC14C88, SN75188, SN75C188, DS1488, and DS14C88


  • Equipment Meeting IEC 1000-4-2 (Formerly IEC 801-2) or ±15kV ESD Protection
  • Interfacing Data Terminal Equipment (DTE) with Data Circuit-Terminating Equipment (DCE)
  • Modems
  • PC Motherboards
Part Number VSUPPLY (Dual)
Tx Rx Data Rate
Internal Charge Pump Ext. Caps ESD Protect.
Dual min typ See Notes
MAX1488E  12 4 0 120 0.085 No 0 15 $1.33 @1k
See All RS-232 Line Driver/Receivers (147)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


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