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+2.7V to +3.6V Powered, 1µA Supply Current, 3-Driver/5-Receiver, True RS-232 Transceiver

Product Details

Key Features

Parametric specs for RS-232 Line Driver/Receivers
# Rx 5
# Tx 3
VSUPPLY (V) 3
Data Rate (kbps) (min) 235
ICC (mA) (typ) 1.5
Internal Charge Pump Yes
External Caps 2
Cap. Value (µF) (nom) 0.33/0.68
Package/Pins SSOP/28
Budgetary
Price (See Notes)
5.83
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Simplified Block Diagram

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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 5
# Tx 3
VSUPPLY (V) 3
Data Rate (kbps) (min) 235
ICC (mA) (typ) 1.5
Internal Charge Pump Yes
External Caps 2
Cap. Value (µF) (nom) 0.33/0.68
Package/Pins SSOP/28
Budgetary
Price (See Notes)
5.83

Key Features

BETTER THAN BIPOLAR!
  • 1µA Supply Current Using AutoShutdown
  • Operates from Single +2.7V to +3.6V Supply
  • 28-Pin SSOP or Wide SO Packages
  • Meets All EIA/TIA-232E & EIA/TIA-562 Specifications
  • Mouse Driveability-Guaranteed
  • Low-Cost, Surface-Mount External Components
  • 235kbps Guaranteed Data Rate-LapLink® Compatible
  • +5V Logic Compatible
  • Complementary Receiver Output Always Active
  • Flow-Through Pinout

Applications/Uses

  • Battery-Powered Applications
  • Instruments
  • Notebook and Palmtop Computers
  • Peripherals

Description

The MAX3212 uses Maxim's new proprietary AutoShutdown mode to reduce supply current to 1µA. The MAX3212, with 3 RS-232 drivers and 5 RS-232 receivers, is intended for 2.7V to 3.6V-powered EIA/TIA-232E and V.28/V.24 serial interface. True RS-232 levels are maintained across the operating range. A guaranteed data rate of 235kbps provides compatibility with popular software for communicating with personal computers.

Supply current is reduced to 1µA with Maxim's new AutoShutdown feature. When the MAX3212 does not sense a valid signal level on the receiver inputs, the on-board power supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The system turns on again when a valid level is applied to any RS-232 receiver input. As a result, the system saves power without changes to the existing software.

A second power-management feature is incorporated to permit automatic shutdown when the RS-232 connection is valid but inactive. In this case, a transition detector facilitates shutdown when the receivers are presented with stationary RS-232 levels for long periods.

Three-state drivers are provided on receiver outputs so that multiple receivers, generally of different interface standards, can be wire-ORed at the UART. The MAX3212 is available in 28-pin SO and SSOP packages.

Simplified Block Diagram

MAX3212: Typical Operating Circuit MAX3212: Typical Operating Circuit Zoom icon

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.