MAX3387E

3V, ±15kV ESD-Protected, AutoShutdown Plus RS-232 Transceiver for PDAs and Cell Phones

Separate Logic Supplies Ensure Compatibility with Mixed ASIC Logic Levels

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Status Explanations for product status codes

Active: In Production.

Description

The MAX3387E 3V powered EIA/TIA-232 and V.28/V.24 is a communications interface with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. The MAX3387E has three receivers and three transmitters. All RS-232 inputs and outputs are protected to ±15kV using the IEC 1000-4-2 Air-Gap Discharge method, ±8kV using the IEC 1000-4-2 Contact Discharge method, and ±15kV using the Human Body Model.

A proprietary low-dropout transmitter output stage enables true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. The MAX3387E is capable of running at data rates up to 250kbps while maintaining RS-232 compliant output levels.

The MAX3387E has a unique VL pin that allows interoperation in mixed-logic voltage systems. Both input and output logic levels are pin programmable through the VL pin. The MAX3387E is available in a space-saving TSSOP package.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 3 (PDF, 172kB)
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Key Features

  • VL Pin for Compatibility with Mixed-Voltage Systems
  • ±15kV ESD Protection on Rx Inputs and Tx Outputs
  • Low 300µA Supply Current
  • Guaranteed 250kbps Data Rate
  • 1µA AutoShutdown Plus™ with Receivers Active
  • Meets EIA/TIA-232 Specifications Down to 3.0V
 

Applications/Uses

  • Battery-Powered Applications
  • Cellular Data Cables
  • Handheld Equipment
  • PDAs and PDA Cradles
  • Peripherals
  • Subnotebook and Palmtop Computers
   

Key Specifications:

RS-232 Line Driver/Receivers
Part Number VSUPPLY
(V)
Tx Rx Data Rate
(kbps)
ICC
(mA)
Internal Charge Pump Ext. Caps Cap. Value
(µF)
ESD Protect.
(±kV)
Rx Active in Shutdn Package/Pins Budgetary Price
min typ nom See Notes
MAX3387E 
3.3
5
3 3 250 0.3 Yes 4 0.1 15 3
TSSOP/24
$3.25 @1k
See All RS-232 Line Driver/Receivers (152)
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 prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

MAX3387E: Typical Operating Circuit
Typical Operating Circuit

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Information Index

Document Ref.: 19-1561 Rev 3; 2010-06-25
This page last modified: 2010-12-07




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