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MAX253ESA+
Transformer Driver for RS232, RS485, 1 Driver, 4.5V to 5.5V Supply, SOIC-8
제품 개요
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
애플리케이션
Power Management, Communications & Networking, Medical, Automation & Process Control
제품 정보
기술 문서 (1)
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