74LS45 IC BCD to 7-Segment Latch/Decoder/Driver DIP-16 74LS45

Product Overview

The 74LS45 is a BCD-to-decimal decoder/driver designed to convert a 4-bit Binary Coded Decimal (BCD) input into one of ten decimal outputs. Internally, it utilizes a set of inverters to buffer the input signals and a series of 4-input NAND gates to perform the decoding logic. A notable feature of the 74LS45 is its high-performance NPN output transistors, which allow it to function as an open-collector driver for indicators, relays, or other logic circuits.

Core Specifications

• Manufacturer: Fairchild Semiconductor

• Function: BCD-to-decimal decoder/driver.

• Logic Logic: Full decoding of valid BCD inputs (0–9); all outputs remain in an "OFF" (high-impedance) state for invalid binary input conditions (10–15).