MC14518BDWR2

Timing:	Synchronous
Base Part Number:	4518
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 125°C
Voltage - Supply:	3V ~ 18V
Trigger Type:	Positive, Negative
Count Rate:	8MHz
Series:	4000B
Reset:	Asynchronous
Number of Bits per Element:	4
Number of Elements:	2
Direction:	Up
Logic Type:	BCD Counter
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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The MC14518BDWR2 is a motor-switching counter which offers many advantages to users. It is composed of two major components: the switch clock and the count up/down counter. The switch clock provides a continuously changing, uniform output of alternating pulses for applications requiring a wide range of timing cycles. The count up/down counter synchronizes the pulses from the switch clock, accurately counting up or down from a preset value.This circuit is designed to be used in a variety of applications, including motor cycle speed sensors, counter-top ovens, microwave ovens and all types of timer control systems. The MC14518BDWR2 is also capable of controlling a wide range of motor speeds, ranging from fractional horse power to several HP.The operation of the MC14518BDWR2 is quite straightforward. When the counter is enabled by the start switch, an initial voltage is applied to the switch clock, causing the count up/down counter to begin counting. The switch clock itself measures time and will switch at regular intervals, sending a pulse to the count up/down counter. This pulse is used to either increment or decrement the counter, depending on the direction specified by the user. The output of the count up/down counter is then used to control the motor speed.The MC14518BDWR2 provides several features that make it an attractive choice for motor speed control applications. First, it provides circuitry for both up-counting and down-counting, allowing the user to achieve a desired speed within a power range from fractional HP to several HP. Additionally, the MC14518BDWR2 offers several performance options for matching the switching frequency to the load’s operating frequency. Additionally, the high current carrying capacity of the MC14518BDWR2 allows it to be used for induction motors and other power loads.Another feature of the MC14518BDWR2 is its built-in safety circuit which prevents the load from being overloaded or otherwise damaged due to an occurrence such as a faulty sensor or incorrect frequency setting. This safety circuit monitors the output of the count up/down counter and will disable the motor if the frequency becomes too high.Overall, the MC14518BDWR2 is an excellent choice for motor speed control applications. It is easy to install, offering a wide range of features and benefits. The MC14518BDWR2 is reliable, accurate and offers protection for the load. With these attractive features, it is no surprise that the MC14518BDWR2 is a popular choice for many motor speed control applications.

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