8N4DV85LC-0079CDI

Programmable Timers and Oscillators

Programmable timer and oscillators are devices designed to ensure that running processes will occur in a predetermined manner. This article is devoted to 8N4DV85LC-0079CDI, a programmable timer and oscillator, and its application field and working principle.

Overview of 8N4DV85LC-0079CDI

The 8N4DV85LC-0079CDI is a CMOS dual voltage programmable timer and oscillator that was developed by Accurate Time and Frequency, Inc. This Accurate Time and Frequency-patented product is a low power operation and a high reliability package in a hermetically-sealed ceramic package. It requires no external components for operation, and provides a reliable and accurate programmable timing operation for up to 20 years as tested in Accurate Time and Frequency’s environment.

Adjustable delay from 1 microsecond to 10 hours is provided by the 8N4DV85LC-0079CDI. The device has a self-contained monolithic structure, separate power supplies for both oscillator and logic, CMOS logic, non-parity check, low power operation, low jitter and timing variation, and power save and failure detection modes.

Application Field

The 8N4DV85LC-0079CDI is mainly used in industrial and telecommunications applications, including timing and synchronization applications, research and development, data acquisition systems and remote control systems, and flight control applications.

In industrial applications, the 8N4DV85LC-0079CDI is used to manage the start and stop of production processes and products, to maintain steady operation of feedback circuits, to optimize the efficiency of production, and to provide precise timing control. In telecommunications applications, the 8N4DV85LC-0079CDI is used for packet switching and call setup for physical layer control.

In research and development, data acquisition systems, and remote control systems, the 8N4DV85LC-0079CDI is used to synchronize data flow, maintain steady remote control, and ensure reliable communication of the system. In flight control, the 8N4DV85LC-0079CDI is used to optimize the performance of navigation systems, to stabilize direction control devices, and to provide precise timing control for all systems related to navigation.

Working Principle

The 8N4DV85LC-0079CDI consists of two parts, the oscillator circuit and the counter/logic circuit. The oscillator circuit is responsible for generating the basic timing signals, and the counter/logic circuit is responsible for generating output signals at predetermined times.

The 8N4DV85LC-0079CDI uses an Xtal oscillator circuit to generate a series of regular pulses. The frequency of the oscillator is determined by the external crystal, and its range is from 200 kHz to 60 MHz. When the counter/logic circuit receives the pulses from the oscillator, it counts the number of pulses and generates an output signal when a predetermined number of pulses has been received.

The adjustable delay is provided by the 8N4DV85LC-0079CDI using the counter/logic circuit. The user can set the delay time by setting the count register in advance. When the counter/logic circuit receives the pulses from the oscillator, it keeps counting until it reaches the preset count, and then an output signal is generated.

In addition, the 8N4DV85LC-0079CDI has a power save and failure detection mode. This mode is triggered when the power supply to the device is out of the specified range. When in this mode, the device will automatically switch to low power operation, so that it can continue to generate output signals even when the power supply is unstable.

Conclusion

Programmable timer and oscillators are essential components for ensuring reliable operation in industrial, telecommunications, research and development, data acquisition systems and remote control systems, and flight control applications. The 8N4DV85LC-0079CDI is a CMOS dual voltage programmable timer and oscillator that has the capability to adjust delay from 1 microsecond to 10 hours, and it is equipped with power save and failure detection mode.