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MAX253ESA+

Transformer Driver for RS232, RS485, 1 Driver, 4.5V to 5.5V Supply, SOIC-8

MAXIM INTEGRATED PRODUCTS MAX253ESA+

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Manufacturer Part No:
MAX253ESA+
Order Code:
2518774
Technical Datasheet:
MAX253ESA+   Datasheet
See all Technical Docs

Product Overview

The MAX253ESA+ is a simple power-supply Transformer Driver for isolated RS-485/RS-232 data-interface applications. The device drives a centre-tapped transformer primary from a 5 or 3.3VDC power supply. The secondary can be wound to provide any isolated voltage needed at power levels up to 1W. The MAX253 consists of a CMOS oscillator driving a pair of N-channel power switches. The oscillator runs at double the output frequency, driving a toggle flip-flop to ensure 50% duty cycle to each of the switches. Internal delays are arranged to ensure break-before-make action between the two switches. The SD pin puts the entire device into a low-power shutdown state, disabling both the power switches and oscillator.
  • 0.4µA Low-current shutdown mode

Applications

Power Management, Communications & Networking, Medical, Automation & Process Control

Product Information

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:
Transformer Driver

:
RS232, RS485

:
1Drivers

:
4.5V

:
5.5V

:
SOIC

:
8Pins

:
-40°C

:
85°C

:
-

:
MSL 1 - Unlimited
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Technical Docs (1)

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