CD14538BNSRE4

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Logic - Multivibrators is a type of electronic circuit that refers to an electronic device that switches usages between two possible electronic states. This type of circuit is characterized as having two stable states that oscillate back-and-forth between each other indefinitely, creating a square wave pattern. A CD14538BNSRE4 is one of the logic-based multivibrators from NXP. This electronic device is used in various consumer electronic applications, such as the home security system or the portable digital player.

The CD14538BNSRE4 is a monolithic dual timer based on CMOS technology, providing two identical and independent active low power output signals. Usually, this device consists of two logic-level cross-coupled NAND gates with an internal power supply of 4.5V-18V. The device also features an active mode and an inactive mode. In active mode, the timer generates an output signal once every 8 minutes. And in inactive mode, the timer generates an output signal every 20 minutes.

The working principle of a CD14538BNSRE4 is based on oscillations that occurs due to positive feedback between the two cross-coupled NAND gates. The circuit gets triggered by an external source such as an input voltage or a logic signal, which sends an electrical current through the gate and generate an initial state. This state then successfully propagates through the device, creating an oscillation in the output. Since the device is self-energizing, the output signals then shifts between each other at regular intervals.

In conclusion, the CD14538BNSRE4 is a type of logic-based multivibrator used in consumer electronic applications. This device is made up of two cross-coupled NAND gates and has an active and inactive mode, where the output signal oscillates at different frequencies. The working principle behind this device is based on the positive feedback between the gates, which sends out oscillating output signals.

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