Part Number: 74LS90, Maunfacturer: Motorola, Part Family: 74, File type: PDF, Document: Datasheet – semiconductor. The 74LS90 is a simple counter, i.e. it can count from 0 to 9 cyclically in its natural mode. It counts the input pulses and the output is received as a 4-bit binary. The SN54/74LS90, SN54/74LS92 and SN54/74LS93 are high-speed. 4-bit ripple type counters partitioned into two sections. Each counter has a di- vide-by-two.

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Datasyeet GPS with Arduino.

74LS90 | IC 74LS90 Datasheet | IC Pin Diagram & Description

The chip can count up to other maximum numbers and return to zero by changing the modes of Supply voltage; 5V 4. Interface SD Card with Arduino.

This high-density System-in-Package SiP integrates controller, power switches, and support components. I built that circuit in electronics worbench and it acts ic 74ls90 datasheet crazy. For example, if two are datasheft in a manner that input of one becomes the output of other, the second IC will receive a pulse on every tenth count and will reset at every hundredth count. Samcheetah, the logic inputs always need H or L level. The outputs ic 74ls90 datasheet always high. Skip to main content.


Interface GPS with Arduino. This enables the cascade connection of the inbuilt counters. By connecting Q A with input1, can be used for BCD counting whereas by connecting Q D with input2, it can be used for bi-quinary counting.

The other high counts can be generated by connecting two or more ICs. Bi-quinary is a system for storing decimal digits in a four-bit binary number.


Choosing Battery for Robots. Output 3, BCD Output bit 2.

Anyone got anymore ideas? The bi-quinary code was used in the abacus. If you are interested the project is at: The binary output is reset to at every tenth pulse and count starts from 0 again. A pulse is also generated probably at pin 9 as it resets its output to Dztasheet voltage; 5V 4. It is a very useful bench test equipment dataeheet testing and finding out the frequency of various devices with unknown frequency such as oscillators, radio receivers, transmitters, function generators, crystals, etc.


It can be used as a divide by 10 counter by connecting Q A with clock input2, grounding all the reset pins, and giving pulse at clock input1.

Arduino based GPS receiver. Daasheet is an irreplaceable tool for troubleshooting and repairing electronic equipment by determining performance and health of electrolytic capacitors.


Output 2, BCD Output bit 1. These modes are set by changing the connection of reset pins R 1 – R 4. Your name or email address: Bi-quinary is a system for storing decimal digits in a four-bit binary number.

Output 1, BCD Output bit 0.

National Semiconductor

The 74LS90 is a simple counter, i. Electro Tech is an online community with overmembers who enjoy ic 74ls90 datasheet about and building electronic circuits, satasheet and gadgets.

SPI Module of Arduino.