---
product_id: 252505601
title: "IHC 7490 / SN74LS90N IC Logic IC Decade/Binary Counter, DIP-14 (pack of 1) by Indian Hobby Center"
brand: "ihc"
price: "$346"
currency: MXN
in_stock: true
url: https://www.desertcart.mx/products/252505601-ihc-7490-sn74ls90n-ic-logic-ic-decade-binary-counter-dip
store_origin: MX
region: Mexico
---

# 42MHz Clock Speed 14-Pin DIP Decade Counter IHC 7490 / SN74LS90N IC Logic IC Decade/Binary Counter, DIP-14 (pack of 1) by Indian Hobby Center

**Brand:** ihc
**Price:** $346
**Availability:** ✅ In Stock

## Summary

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## Quick Answers

- **What is this?** IHC 7490 / SN74LS90N IC Logic IC Decade/Binary Counter, DIP-14 (pack of 1) by Indian Hobby Center by ihc
- **How much does it cost?** $346 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/252505601-ihc-7490-sn74ls90n-ic-logic-ic-decade-binary-counter-dip)

## Best For

- ihc enthusiasts

## Why This Product

- Trusted ihc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Design:** Space-saving 14-pin DIP package fits seamlessly into your projects.
- • **Precision Counting:** Achieve accurate decade and binary counting with ease.
- • **Reliable Power Range:** Operates efficiently within a supply voltage of 4.75V to 5.25V.
- • **High-Speed Performance:** Operates at a lightning-fast 42MHz clock frequency.
- • **Versatile Applications:** Perfect for BCD nine's complement and other digital applications.

## Overview

The IHC 7490 / SN74LS90N IC Logic IC is a high-performance decade and binary counter designed for precision counting in digital applications. With a robust clock frequency of 42MHz and a compact 14-pin DIP design, this versatile component is perfect for hobbyists and professionals alike, ensuring reliable performance within a supply voltage range of 4.75V to 5.25V.

## Description

The SN74LS90N is a Decade Counter contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and a three-stage binary counter for which the count cycle length is divide-by-five for the '90A and 'LS90, divide-by-six for the '92A and 'LS92 and the divide-by eight for the '93A and 'LS93. All of these counters have a gated zero reset and the '90A and 'LS90 also have gated set-to-nine inputs for use in BCD nine's complement applications. To use their maximum count length (decade, divide-by-twelve or four-bit binary) of these counters, the CKB input is connected to the QA output. The input count pulses are applied to CKA input and the outputs are as described in the appropriate function table. A symmetrical divide-by-ten count can be obtained from the '90A or 'LS90 counters by connecting the QD output to the CKA input and applying the input count to the CKB input which gives a divide-by-ten square wave at output QA. Logic Family / Base Number: 74LS90; Counter Type: Decade; Clock Frequency: 42MHz; Count Maximum: 9; No. of Pins: 14Pins. Supply Voltage Min: 4.75V; Supply Voltage Max: 5.25V; Logic IC Family: 74LS; Logic IC Base Number: 7490.

## Features

- The SN74LS90N is a Decade Counter contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and a three-stage binary counter for which the count cycle length is divide-by-five for the '90A and 'LS90, divide-by-six for the '92A and 'LS92 and the divide-by eight for the '93A and 'LS93. All of these counters have a gated zero reset and the '90A and 'LS90 also have gated set-to-nine inputs for use in BCD nine's complement applications.
- To use their maximum count length (decade, divide-by-twelve or four-bit binary) of these counters, the CKB input is connected to the QA output. The input count pulses are applied to CKA input and the outputs are as described in the appropriate function table. A symmetrical divide-by-ten count can be obtained from the '90A or 'LS90 counters by connecting the QD output to the CKA input and applying the input count to the CKB input which gives a divide-by-ten square wave at output QA.
- Logic Family / Base Number: 74LS90; Counter Type: Decade; Clock Frequency: 42MHz; Count Maximum: 9; No. of Pins: 14Pins.
- Supply Voltage Min: 4.75V; Supply Voltage Max: 5.25V; Logic IC Family: 74LS; Logic IC Base Number: 7490.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | IHC |
| Manufacturer | IHC |
| Country of Origin | India |
| Number of Memory Sticks | 1 |
| Package Dimensions | 20 x 15 x 5 cm |
| Item part number | SN74LS90N |

## Images

![IHC 7490 / SN74LS90N IC Logic IC Decade/Binary Counter, DIP-14 (pack of 1) by Indian Hobby Center - Image 1](https://m.media-amazon.com/images/I/61TLSOpj55L.jpg)
![IHC 7490 / SN74LS90N IC Logic IC Decade/Binary Counter, DIP-14 (pack of 1) by Indian Hobby Center - Image 2](https://m.media-amazon.com/images/I/51QnSY9SHWL.jpg)
![IHC 7490 / SN74LS90N IC Logic IC Decade/Binary Counter, DIP-14 (pack of 1) by Indian Hobby Center - Image 3](https://m.media-amazon.com/images/I/61Gi8O5E+pL.jpg)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-01-22*