MC74HC390ADR2G

Timing:	--
Base Part Number:	74HC390
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 125°C
Voltage - Supply:	2V ~ 6V
Trigger Type:	Negative Edge
Count Rate:	50MHz
Series:	74HC
Reset:	Asynchronous
Number of Bits per Element:	4
Number of Elements:	2
Direction:	--
Logic Type:	Counter, Decade
Part Status:	Active
Packaging:	Tape & Reel (TR)

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This article introduces the application fields and working principle of the MC74HC390ADR2G IC. The MC74HC390ADR2G is a dual 4-bit binary ripple counter integrated circuit (IC) that belongs to the Logic - Counters, Dividers category.The MC74HC390ADR2G is produced by ON Semiconductor, a major semiconductor manufacturer based in the United States and has a supplemental power range of 3-18V. It is a versatile IC and one of the most popular ones in this category, which can be easily found in electronic projects across various engineering disciplines. The main functions of the MC74HC390ADR2G are as follows: it can be used as separate ripple counters, or combined as an 8-bit counter, 10-bit counter, or a binary coded decimal (BCD) counter. In addition, it can be used for frequency division, divide-by-10 applications, digital-to-analog conversion, and for antiphase detection.The MC74HC390ADR2G has two 4-bit ripple counters, each with synchronous reset, clock and enable inputs. The “R” (reset) and “C” (clock) input pins control the counters independently, while the “E” (enable) input pin controls both counters simultaneously. Whenever the C pin is driven by a high signal, it will increment the binary-coded content in each of the four bits that make up the counter. When the counter content reaches the maximum of 15 (01111 in binary), the output will reset to 0. The synchronous reset input (R) allows the counter content to be reset to 0 regardless of the C input. The content will remain reset until the R pin is driven low, at which point the counter content can be incremented again.The MC74HC390ADR2G has a wide variety of applications in modules such as frequency divider circuits, frequency counter circuits, digital-to-analog converters, analog-to-digital converters, rate multipliers, and BCD converters. The IC finds a lot of use in industrial, aerospace and automotive applications. The MC74HC390ADR2G is a low-cost, low-power consumption IC that offers reliable performance in any application that requires accurate pulse counting and elapsed time measurement. The IC can be used with ease due to its simple logic diagram, and is ideal for many medium- to low-frequency counting applications.Overall, the MC74HC390ADR2G is an excellent choice for applications requiring accurate counting and elapsed time measurement. Its flexible inputs, wide operating temperature range, and very few operating components make it a reliable, cost-effective solution.

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