DS1811-5/T&R

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A DS1811-5/T&R supervisor is an integrated circuit (IC) designed to provide control and protection mechanisms for electronic systems. It helps manage power supply sequencing, reset signals, and real-time clock management. Power supply sequencing is a process in which power is cycled on and off in a specific order to ensure proper operation of the system. The DS1811-5/T&R is a popular supervisor due to its small size, minimal component count, and ease of implementation.

The DS1811-5/T&R supervisor is commonly used in a variety of applications that require a low-power system reset timer or sequence controller. These applications include handheld computers, digital cameras, medical devices, set-top boxes, and networking equipment. The supervisor helps reduce system costs by providing enhanced control and protection mechanisms that are easy to implement.

The DS1811-5/T&R supervisor provides several beneficial features. These include an adjustable reset delay, two reset timeout periods, a power-fail output, and a real-time clock input. The reset delay is adjustable and can be set between 500 us and 1 ms. The two reset timeout periods provide additional safety by providing two independent reset outputs that can be used to provide redundancy. The power-fail output provides improved power management by signaling when a low-voltage condition occurs.

The real-time clock input allows the supervisor to keep track of system time. This can be useful for intelligent power management applications such as shutdown on idle, or powering down parts of the system during specific time intervals. The supervisor also features a “watch-dog” timer which can be used to detect system faults. If the “watch-dog” timer expires, the supervisor can initiate a system reset.

The DS1811-5/T&R supervisor is relatively easy to implement. The power-up and power-down sequencing is a relatively straight forward process. The supervisor comes in a lead-free, RoHS compliant SOIC-8 package. It has an operating range of -40°C to +85°C and is available in an extended temperature range from -40°C to +105°C.

The DS1811-5/T&R is a popular supervisor due to its low cost, minimal component count, and ease of implementation. It is commonly used in a variety of applications that require a low-power system reset timer or sequence controller. Its power-up and power-down sequencing, adjustable reset delay, two reset timeout periods, power-fail output, and real-time clock inputs features, make it a popular choice for many systems.

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