MC14528BDG

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The MC14528BDG is a multivibrator integrated circuit, and is most often used to control the frequency of electronic timekeeping devices. It also can be used in various logic applications. This circuit is available in a 14-pin dual in-line package (DIP) as well as in a 14-pin small outline (SO) package.

The MC14528BDG is a bistable, dual retriggerable multivibrator, which is used to generate symmetrical, accurate time delays or oscillation. It contains two stable states: one in which the output Q is high, and one in which the output Q is low. The state of the circuit can be changed, or clocked, by applying a signal to its trigger input. Additionally, it can be retriggered, which means that, upon receipt of a trigger signal, the circuit will re-enter the same state it was in prior to that signal.

The MC14528BDG is the generic term for a device package capable of containing a variety of different types of Digital logic circuit. The device is designed to integrate the necessary circuitry needed for oscillation and timer functions into a single monolithic integrated circuit. Its configuration and number of components, as well as its pin out, are based on the type of integrated circuit contained in the package.

The MC14528BDG contains two CMOS inverters, two Schmitt trigger inputs, two retriggerable mono-stable multivibrator outputs and the associated control circuitry. The four Schmitt trigger inputs and the related control network ensures that a very low jitter, high accuracy time base can be generated. The monostable outputs Q and Q can provide symmetrical output pulses without the need for additional components.

The MC14528BDG is designed to be driven by either a positive edge triggered input or a negative edge triggered input. Depending on which type of edge triggered input is chosen, one of the two Schmitt trigger inputs must be activated for reliable operation. Both Schmitt trigger inputs are active when the circuit is in its quiescent state, whereby the circuit is neither in the “Q High” or “Q Low” states.

The outputs of the MC14528BDG can be individually enabled by activating their associated control inputs. The output pulse width is adjusted by an external capacitor connected to the appropriate control input. There are two types of control inputs, one for the Q output and another for the Q output.

The pulse width of an individual output can be adjusted by changing the value of the external capacitor, or by trimming the capacitor’s value. The oscillation frequency is adjusted by changing the values of both external capacitors. Like all timer circuits, the oscillation frequency of the MC14528BDG is based on the values of the capacitors, but it can be further adjusted by changing the biasing voltage at the Schmitt trigger inputs.

The MC14528BDG application has a wide range. It is used in the design of digital clocks, switch debouncers, time delay circuits, pulse stretchers, voltage-controlled oscillators, tone generators, interface circuits, power-on reset circuits, electronic game time keepers, logic circuits, frequency dividers, and many other applications.

In summary, the MC14528BDG is an efficient and reliable dual retriggerable multivibrator circuit, which can be used in a variety of different electronic timekeeping and logic applications. Its piezoelectric inputs and trimming capacitors allow for a wide range of frequency and pulse width adjustment, making it a versatile and widely used integrated circuit in the electronics industry.

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