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MAX253CSA+ The Analog Devices MAX253CSA+ is a transformer driver IC designed for isolated RS-485 and RS-232 interfaces. It operates from a 5V or 3.3V supply and comes in an 8-SOIC package.
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MAX253CSA+

Available from 1 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The Analog Devices MAX253CSA+ is a transformer driver IC designed for isolated RS-485 and RS-232 interfaces. It operates from a 5V or 3.3V supply and comes in an 8-SOIC package.
✓ Total Stock: 188 pcs
$ Price Range: $0.75

MAX253CSA+ Available from 1 distributor

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✓ Non-Authorised
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Braun Electronic Components ✓
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188 pcs
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188 pcs On Request 1 On Request On Request On Request On Request On Request
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MAX253CSA+ Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Frequency
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Number of Drivers
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MAX253CSA+ Description

Short technical summary and product information.

The MAX253CSA+ from Analog Devices is a monolithic oscillator and power driver specifically engineered to provide isolated power for RS-485 or RS-232 data interfaces. This device drives a center-tapped transformer primary from a single 5V or 3.3V DC power supply, allowing the secondary to be wound for any required isolated voltage up to 1W.

 

Key features include pin-selectable frequencies of 350kHz or 200kHz and a low-current shutdown mode drawing only 0.4µA. The MAX253CSA+ is housed in an 8-SOIC package, minimizing board space. It is suitable for applications requiring high noise-immunity communications interfaces, isolated power supplies, and bridging ground differentials.

 

Designed for ease of implementation, the MAX253CSA+ integrates an oscillator with a pair of N-channel power switches. The oscillator operates at double the output frequency, feeding a toggle flip-flop to ensure a 50% duty cycle for each switch, with internal delays ensuring break-before-make action. The device operates within a temperature range of 0°C to 70°C and is surface-mount compatible.

MAX253CSA+ Quick Information

Product Type: Transformer Driver IC
Canonical Name: MAX253CSA+ Transformer Driver for Isolated RS-485 Interface
Subcategory: Transformer Driver

MAX253CSA+ Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MAX253CSA+ Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

MAX253CSA+ Features

  • Drives transformer for isolated RS-485/RS-232.
  • Single 5V or 3.3V supply operation.
  • Pin-selectable frequency options.
  • Low-current shutdown mode.
  • Compact 8-SOIC surface-mount package.

MAX253CSA+ Applications

  • Isolated RS-485/RS-232 power supplies.
  • High noise-immunity communications.
  • Isolated high-voltage power supplies.
  • Bridge ground differentials.

MAX253CSA+ FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating supply voltage for the MAX253CSA+?

The MAX253CSA+ operates from 3.3V or 5V supplies.

What is the operating temperature range of the MAX253CSA+?

The operating temperature range for the MAX253CSA+ is 0°C to 70°C.

What package type is the MAX253CSA+ available in?

The MAX253CSA+ is available in an 8-SOIC package.

What is the RoHS status of the MAX253CSA+?

The MAX253CSA+ is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the MAX253CSA+?

The Moisture Sensitivity Level (MSL) for the MAX253CSA+ is 1 Unlimited.

What interface types does the MAX253CSA+ support?

The MAX253CSA+ supports RS232 and RS485 interface types.

What is the shutdown current for the MAX253CSA+?

The shutdown current for the MAX253CSA+ is 0.4µA.

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