DM74LS03N – NATIONAL SEMICONDUCTOR

Overview

The onsemi DM74LS03N is a quad 2-input NAND gate featuring open-collector outputs, designed for general-purpose digital logic applications. Its primary function is to implement the NAND logic operation, providing a low output state only when all inputs are high. A critical design consideration for this LS-family device is the necessity of external pull-up resistors on each output to achieve a defined high logic level, a trade-off for the inherent robustness and lower power consumption compared to TTL equivalents. This component is ideal for systems where precise output voltage levels are not paramount, but reliable logic inversion is required.

Key Features

• Quad 2-Input NAND Gate Configuration
• Open Collector Output Type
• LS Logic Family (Low Power Schottky)
• Maximum Propagation Delay: 45 ns
• Operating Supply Voltage: 4.75 V to 5.25 V
• Package: 14-Pin PDIP (19.56 mm x 6.6 mm x 3.56 mm)

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Implementing combinational logic functions in control circuits
• Buffer stages requiring a logic inversion with external pull-up configuration
• Driving indicator LEDs or relays where current sinking capability is utilized
• Basic signal gating and multiplexing in low-speed digital systems