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1.8V to 4.25V Powered, True RS-232 Dual Transceiver

Product Details

Key Features

Parametric specs for RS-232 Line Driver/Receivers
# Rx 2
# Tx 2
VSUPPLY (V) 1.8
Data Rate (kbps) (min) 120
ICC (mA) (typ) 1.9
Internal Charge Pump Yes
External Caps 2
Cap. Value (µF) (nom) 0.33/0.68
Package/Pins SOIC (W)/20
SSOP/20
Budgetary
Price (See Notes)
5.47
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Simplified Block Diagram

Technical Docs

Support & Training

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Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for RS-232 Line Driver/Receivers
# Rx 2
# Tx 2
VSUPPLY (V) 1.8
Data Rate (kbps) (min) 120
ICC (mA) (typ) 1.9
Internal Charge Pump Yes
External Caps 2
Cap. Value (µF) (nom) 0.33/0.68
Package/Pins SOIC (W)/20
SSOP/20
Budgetary
Price (See Notes)
5.47

Key Features

BETTER THAN BIPOLAR!
  • Operates Directly from Two Alkaline, NiCd, or NiMH Cells
  • +1.8V to +4.25V Supply Voltage Range
  • 120kbps Data Rate
  • Low-Cost Surface-Mount Components
  • Meets EIA/TIA-232E Specifications
  • 1µA Low-Power Shutdown Mode
  • Both Receivers Active During Low-Power Shutdown
  • Three-State Receiver Outputs
  • Flow-Through Pinout
  • On-Board DC-DC Converters
  • 20-Pin SSOP, Wide SO, or DIP Packages

Applications/Uses

  • Battery-Powered Applications
  • Computers: Desktop, Workstation, Server
  • Instruments
  • Modems
  • Peripherals
  • Printers

Description

The MAX218 RS-232 transceiver is intended for battery-powered EIA/TIA-232E and V.28/V.24 communications interfaces that need two drivers and two receivers with minimum power consumption. It provides a wide +1.8V to +4.25V operating voltage range while maintaining true RS-232 and EIA/TIA-562 voltage levels. The MAX218 runs from two alkaline, NiCd, or NiMH cells without any form of voltage regulator.

A shutdown mode reduces current consumption to 1µA, extending battery life in portable systems. While shut down, all receivers can remain active or can be disabled under logic control, permitting a system incorporating the CMOS MAX218 to monitor external devices while in low-power shutdown mode.

A guaranteed 120kbps data rate provides compatibility with popular software for communicating with personal computers. Three-state drivers are provided on all receiver outputs so that multiple receivers, generally of different interface standards, can be wire-ORed at the UART. The MAX218 is available in 20-pin DIP, SO, and SSOP packages.

Simplified Block Diagram

MAX218: Typical Operating Circuit MAX218: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.