SN74LS445N

Overview

The SN74LS445N is a BCD-to-decimal decoder and driver manufactured by Texas Instruments. It belongs to the SN74LS series, utilizing Low-power Schottky logic technology. The device accepts four binary-coded decimal inputs and activates one of ten active-low outputs corresponding to the decimal value. It is housed in a standard 16-pin PDIP package designed for through-hole mounting. The component operates within a supply voltage range of 4.75V to 5.25V and supports an operating temperature range from 0°C to 70°C.

Feature Summary

• Performs conversion of binary-coded decimal input signals into distinct active-low decimal output selections.

Applications

• Decimal decoding circuits
• Driver applications requiring active-low output selection

Procurement Notes

Verify the specific suffix 'N' confirms the PDIP through-hole package variant. Confirm the LS logic family designation matches system requirements for Low-power Schottky characteristics. Ensure the manufacturer is identified as Texas Instruments or an authorized licensee producing equivalent specifications.

Selection Notes

Select this component when a dedicated BCD-to-decimal translation function with active-low outputs is required. The LS series offers a balance of speed and power consumption suitable for general digital logic applications. Verify that the 16-pin DIP form factor fits the target PCB layout constraints.

Part Context

This part is part of the SN74LS family, which utilizes Low-power Schottky technology to provide improved switching speeds compared to standard LS logic while maintaining lower power dissipation. The SN74LS445 specifically addresses the need for direct decimal decoding without external gate logic.