MV54644 Optoelectronics

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LED Indication - Discrete indicates the application of a single discrete LED indicator device used to indicate machine or system operational status. The MV54644 is a highly versatile and reliable LED Indication - Discrete device used for applications such as audio equipment, process control, instrumentation, aviation and automotive systems.

The MV54644 contains two indicator output ports, each capable of driving a single point LED. It is capable of responsive operation with a wide range of input signals, including TTL, PECL, CMOS and LVDS. Three power paths are provided - one supply port (Vcc), two auxiliary ports (VPWR and GND) and two logic ports (Vcc_IO and GND_IO) to ensure reliable operation under harsh conditions.

The MV54644 accepts both analog and digital input signals, providing programmable control over the state and brightness of each indicator port. Each port can be configured to accept either signals from complementary sources, such as a 3.3V TTL signal and the other from a 1.8V CMOS signal, or drive the indicator with a sensing circuit that automatically adjusts the brightness of the LED when the input signal level changes.

The MV54644 also includes an on-chip control logic circuit, which allows the device to control the state of the LED indicator with a variety of logic conditions. An on-chip power switching circuit allows the device to switch off the LED indicator when the input signal level drops too low. This feature prevents the LED from being "overdriven" and increasing power consumption.

The MV54644 also can be configured to operate in conjunction with an external PWM or an instantaneous output signal, allowing an external PWM device to control the indicator brightness. This feature provides an economical solution where the device can be used to create a dimming circuit by controlling the LED brightness.

The MV54644 can be programmed with a variety of timing parameters, allowing the LED to be operated in a wide range of applications. It features a selectable switch-on delay timer and a switch-off timer, allowing the LED to be powered on or off at specific times. The indicator port current is adjustable, allowing the indicator to be adjusted to the desired brightness and power consumption levels.

The versatility of the MV54644 makes it an ideal choice for applications such as audio equipment, process control instrumentation, aviation and automotive systems, where the need for accurate, repeatable, instantaneous and energy efficient LED indication is paramount.

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