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

MAX253CSA

Available from 2 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 data interfaces. It operates from a 5V or 3.3V supply and comes in an 8-SOIC package.
✓ Total Stock: 45,693 pcs
$ Price Range: $0.75

MAX253CSA Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
43,048 pcs
On Request
43048 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
2,645 pcs
On Request
2645 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

MAX253CSA Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Frequency
Interface
Lead Spacing
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MAX253CSA Description

Short technical summary and product information.

The MAX253CSA from Analog Devices is a monolithic oscillator and power-driver IC specifically engineered to provide isolated power for RS-485 or RS-232 data interfaces. It drives a center-tapped transformer primary from a single 5V or 3.3V DC power supply, enabling the secondary to provide any isolated voltage needed for power levels up to 1W.

 

This device integrates a CMOS 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 MAX253CSA features pin-selectable frequencies of 350kHz or 200kHz and a low-current shutdown mode drawing only 0.4µA.

 

Designed for applications requiring high noise immunity and isolated power supplies, such as process control and medical equipment, the MAX253CSA is housed in an 8-pin SOIC package, minimizing board space. Its interface capabilities include RS232 and RS485, and it operates within a temperature range of 0°C to 70°C.

MAX253CSA Quick Information

Product Type: Transformer Driver
Canonical Name: MAX253 Transformer Driver for Isolated RS-485 Interface
Subcategory: Power Management - Specialized

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.
  • Operates from 3.3V or 5V supply.
  • Pin-selectable frequency of 200kHz or 350kHz.
  • Low shutdown current of 0.4µA.
  • Surface mount 8-SOIC package.

MAX253CSA Applications

  • Isolated RS-485/RS-232 power supplies.
  • High noise-immunity communication interfaces.
  • Isolated and high-voltage power supplies.
  • Bridge ground differential applications.
  • Medical equipment power systems.

MAX253CSA FAQs

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

The MAX253CSA operates from 3.3V or 5V supply voltages.

What package type is the MAX253CSA available in?

The MAX253CSA is available in an 8-SOIC package.

What is the operating temperature range of the MAX253CSA?

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

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 is the typical supply current for the MAX253CSA?

The typical supply current for the MAX253CSA is 450µA.

What interface types does the MAX253CSA support?

The MAX253CSA supports RS232 and RS485 interface types.

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