SN74LS390DG4

Timing:	--
Base Part Number:	74LS390
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply:	4.75V ~ 5.25V
Trigger Type:	Negative Edge
Count Rate:	35MHz
Series:	74LS
Reset:	Asynchronous
Number of Bits per Element:	4
Number of Elements:	2
Direction:	Up
Logic Type:	Counter, Decade
Part Status:	Active
Packaging:	Tube

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The SN74LS390DG4 is a versatile dual decade counter. Decade counters are types of binary counters that are used to count in sequence by counting in base 10 (decimal). The SN74LS390DG4 can count from 0 to 999 in sequence and is often used to measure the frequency of an external signal and also to divide clock pulses. This type of counter is widely used in various types of applications from medical instruments to communication systems and industrial automation.

This dual decade counter belongs to the logical family of counters, dividers and registers, which are popularly used in the applications of electronic circuitry and digital electronics. The SN74LS390DG4 is manufactured by Texas Instruments and is a member of the Logic - Counters, Dividers family. This particular device is a high-speed Bi-CMOS logic integrated circuit (IC) with an operating voltage of 5V.

The SN74LS390DG4 has two cascading 10-stage binary counters, capable of dividing incoming clock input signals by 2 to the power of 10, or 1024. The SN74LS390DG4 is able to count up to 999 and reset itself at 1024. When used in combination with other logic circuits, it can divide an incoming frequency by an arbitrary number and also measure an unknown frequency.

The SN74LS390DG4 is capable of counting up to 999 in sequence and resetting itself at 1024. It has two outputs in the form of two 10-stage decimal outputs, one for counting up and one for resetting. When driven by a 5V power supply, the SN74LS390DG4 has a maximum frequency of 1.5 MHz.

The logic family of counters, dividers and registers is used in many applications. Logic counters are used to divide or count pulses of incoming frequencies, while register circuits store digital information. Logic dividers are used in frequency-dividing applications, such as creating pulse-stepping signals and creating divider circuits. The SN74LS390DG4 combines the functions of a counter and a divider and is specifically used for measuring and dividing frequency signals accurately.

The SN74LS390DG4 is used in a number of application fields, from medical instruments and communication systems to industrial automation. Medical applications that use this type of this type of dual decade logic counter include those that require accurately timed signals, such as those used in pulse oximeters, ECG monitors, and infusion pumps. The SN74LS390DG4 is also used in communication systems such as landline and mobile phone switching systems, as well as in industrial automation applications such as custom data acquisition systems, automated process control systems, and robotics.

In summary, the SN74LS390DG4 is a high-speed Bi-CMOS logic IC with two cascading 10-stage binary counter, capable of counting up to 999 in sequence and resetting itself at 1024. It is used in many applications, from medical instruments and communication systems to industrial automation. The logic family of counters, dividers, and registers is used to divide or count pulses of incoming frequencies, store digital information, and create pulse-stepping signals and divider circuits. The SN74LS390DG4 combines the functions of a counter and a divider to produce a reliable and precise frequency counter.

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