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The 74LS161 is a high-speed synchronous 4-bit binary counter IC from the 74LS logic family. It features synchronous counting, parallel load, asynchronous reset, and enable control inputs, making it ideal for use in frequency division, event counting, and digital clock or timer applications.
Unlike asynchronous counters, all internal operations in the 74LS161 are synchronized with the clock input, which ensures reliable and glitch-free output transitions. It comes in a standard DIP-16 through-hole package, making it suitable for breadboarding and DIY projects.
Features of 74LS161 Synchronous 4-Bit Counter IC:
- Synchronous 4-bit binary counter
- Clear (asynchronous reset) and Load (parallel data entry) inputs
- Enable inputs for flexible control (Enable T and Enable P)
- Ripple carry output for cascading multiple counters
- Fast switching performance with TTL compatibility
- Standard DIP-16 package for easy prototyping
Specifications of 74LS161 IC:
- Model: 74LS161
- Function: 4-bit binary synchronous counter
- Operating Voltage: 4.75V – 5.25V (nominal 5V)
- Clock Frequency: Up to 25 MHz (typical)
- Input Logic Level: TTL Compatible
- Package Type: DIP-16 – Through-Hole
- Propagation Delay: ~20ns (typical)
- Operating Temperature: 0°C to +70°C
Package Includes:
1 × 74LS161 – Synchronous 4-Bit Binary Counter IC - DIP-16 Package
Returns Policy
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
1. Damaged During Shipment
If you receive a product damaged during shipment, please notify us within the 3 days of you receive the product, supported by the proper pictures and description. Once our support team accept the return, we will provide a replacement or a complete refund including the return shipping cost.2. Wrong Item Shipped
If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.
Limitation of Returns
We don't accept the returns for the products damanged by improper use of the product. Moreover we don't accept the return, if the ordered product is not fit for any specific application. Please read the product specifications and datasheet before selecting and ordering a product. Returns are accepted only with 3 days from the date of delivery.Shipping
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