CD74HCT85MT

Series:	74HCT
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Magnitude Comparator
Number of Bits:	4
Output:	Active High
Output Function:	A<B, A=B, A>B
Voltage - Supply:	4.5 V ~ 5.5 V
Current - Output High, Low:	4mA, 4mA
Max Propagation Delay @ V, Max CL:	40ns @ 4.5V, 50pF
Current - Quiescent (Iq):	8µA
Operating Temperature:	-55°C ~ 125°C
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Base Part Number:	74HCT85

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CD74HCT85MT is a high speed, low power logic device commonly used in digital and analog circuits. The device is a 4-bit comparator with open-collector outputs. It is useful for applications requiring digital-to-analog conversion, such as temperature measurement and data acquisition. This device is very popular as it is capable of detecting very small differences between two input signals and providing a logical output.The purpose of a comparator is to compare two input signals and produce an output that is logic high in case the two signals do not match. Comparators are commonly used in communication systems such as amplitude modulation (AM) and frequency modulation (FM) for detecting errors in transmitted signals. It is also used for producing pulse-width modulation (PWM) for controlling the speed of an electric motor.The CD74HCT85MT is a 4-bit comparator. It is made up of four major components: a latch, two inputs, and a pair of open-collector outputs. The latch is used for storing the data that is to be compared. The two inputs are fed through series-connected Schottky diodes and resistors which together form a differential circuit. The function of the differential circuit is to compare the two input signals and determine whether they are different or the same. When there is a difference the output goes logic high; when there is no difference the output goes logic low. The open-collector outputs provide logic low or high outputs based on the comparison results.The CD74HCT85MT\'s open-collector outputs can be used in a variety of different applications. It can be used in automotive and industrial applications as a temperature sensor. It can also be used in radio receivers to generate an error signal when an incorrect frequency is received. In addition, it can be used for data acquisition for controlling the speed of an electric motor. In order to ensure reliable operation of the CD74HCT85MT, it should be connected to a stable reference voltage. The reference voltage should be within the range of 2.0 to 5.5 volts. The input signal must also be within the range of 0.8 to 5.5 volts in order to ensure reliable operation.The CD74HCT85MT is a versatile device and can be used in many different applications. It is extremely useful for detecting small differences between two input signals and providing a logical output. It can be used for data acquisition, temperature measurement, and for controlling the speed of an electric motor. The open-collector outputs provide a reliable, logic high or low output based on the comparison results of the two input signals. The device is also very simple to use and comes with relatively few external components.

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