74S140PC

Inverter Gates Overview

The SN74S140PC is a dual 4-input positive-NAND line driver manufactured by National Semiconductor. It contains two independent gates, each performing the NAND logic function with a 50-ohm line driver output capability. The device operates within a standard TTL voltage range and is characterized for commercial temperature operation from 0°C to +70°C. It utilizes a 14-pin plastic DIP package.

Inverter Gates Feature Summary

• Dual independent 4-input NAND gate configuration
• Integrated 50-ohm line driver output stage
• Positive-NAND logic functionality

Inverter Gates Applications

• High-speed digital signal processing interfaces
• Computer bus systems requiring line driving
• TTL logic circuit interconnections

Inverter Gates Procurement Notes

Verify the manufacturer designation on the component marking, as National Semiconductor assets were acquired by Texas Instruments. Confirm the 'PC' suffix corresponds to the specific plastic DIP package variant required for your assembly process. Ensure compatibility with existing design specifications regarding pinout and electrical characteristics before finalizing procurement orders.

Inverter Gates Selection Notes

Select this component when a dual 4-input NAND function with integrated line driving is required. It is suitable for applications needing to drive transmission lines or multiple loads directly without external buffering. Consider the S-series speed characteristics and TTL compatibility requirements of the target system architecture during selection.

Inverter Gates Part Context

This part belongs to the 74S series of high-speed TTL logic devices. It provides a specialized solution for combining logic gating with signal transmission capabilities in a single package. The device is designed for use in systems requiring robust digital signal integrity and standardized logic levels.

Inverter Gates Replacement Considerations

The SN54S140 is the military-grade equivalent offering extended temperature range. Other manufacturers may offer compatible parts such as the Fairchild 74S140, though verification of exact electrical parameters is necessary.