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Maxim > Products > [Interface, Interconnect, and Signal Integrity] 
MAX3388E, MAX3389E
2.5V, ±15kV ESD-Protected RS-232 Transceivers for PDAs and Cell Phones

+2.5V RS-232 Transceivers for PDA HotSync


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 284kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX3388E/MAX3389E are 2.5V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. The MAX3388E/MAX3389E have two 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.

In addition to the traditional RS-232 I/O, these devices have dedicated logic-level I/O pins for additional device-to-device handshaking. During shutdown the logic-level I/O pins are active for the MAX3389E. An internal 62Ω switch is provided to switch power to external circuitry or modules.

A proprietary low-dropout transmitter output stage enables RS-232 compatible performance from a +2.35V to +3.0V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +2.5V supply. The MAX3388E/MAX3389E are capable of running at data rates up to 460kbps while maintaining RS-232-compatible output levels.

The MAX3388E/MAX3389E have 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 MAX3388E/MAX3389E are available in a space-saving TSSOP package.

Key Features   Applications/Uses
  • VL Pin for Compatibility with Mixed-Voltage Systems
  • Additional I/O for Hot-Sync Applications
  • ±15kV ESD Protection on Rx Inputs, Tx Outputs, LIN, and SWIN
  • Low 300µA Supply Current
  • Guaranteed 460kbps Data Rate
  • 1µA Low-Power Shutdown
  • Integrated Switch for Powering Remote Circuitry
  • Flow-Through Pinout
  • LOUT Active During Shutdown (MAX3389E)

 

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)		 Package/Pins Price
min typ nom See Notes
MAX3388E 
2.5
3
 3 2 460 0.3 Yes 4 0.1 15
TSSOP/24
 $2.79 @1k
MAX3389E 
TSSOP/24
 $2.79 @1k
See All RS-232 Line Driver/Receivers (152)

Diagram
MAX3388E, MAX3389E: Typical Operating Circuit
Typical Operating Circuit

Application Notes
  		• Application Note 639: Maxim Leads the Way in ESD Protection - MAX3388E
  		• Application Note 651: ESD Protection for I/O Ports - MAX3388E
  		• Application Note 1834: Lower the Supply Current in Your RS-232 System - MAX3388E

    Design Guides
  		• Interface (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-14 of 14

    MAX3388E Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX3388ECUG+  
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX3388ECUG+T    
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX3388ECUG    
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3388ECUG-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX3388EEUG    
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3388EEUG-T    
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3388EEUG+  
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX3388EEUG+T    
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX3389E Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX3389ECUG+  
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX3389ECUG+T    
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX3389EEUG-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX3389EEUG    
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3389ECUG    
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3389ECUG-T    
    		Active TSSOP;24 pin;52.4 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0118 (PDF)
    Use pkgcode/variation: U24-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis

    Notes and Comments
    Covered by U.S Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761.

    More Information
  		• New Product Press Release 2001-10-16 

    Related Products
    MAX3386E 3.0V, ±15kV ESD-Protected RS-232 Transceivers for PDAs and Cell Phones

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    Document Ref.: 19-1845; Rev 1; 2001-12-03
    This page last modified: 2007-06-13


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