DM74LS241N

Overview

The DM74LS241N is an octal 3-STATE buffer and line driver manufactured by onsemi, formerly Fairchild Semiconductor. It features non-inverting logic with PNP inputs designed to reduce DC loading on bus lines. The device operates within a supply voltage range of 4.75V to 5.25V and supports a typical low-level output current of 24 mA and high-level output current of -15 mA. It utilizes a 20-Lead Plastic Dual-In-Line Package (PDIP) conforming to JEDEC MS-001 standards.

Feature Summary

• Features 3-STATE outputs capable of driving bus lines directly
• Utilizes PNP data line inputs to minimize DC loading on bus lines
• Incorporates hysteresis at data inputs to enhance noise margins

Applications

• Memory-address drivers
• Clock drivers
• Bus-oriented transmitters and receivers

Procurement Notes

Verify the manufacturer origin as the part was originally produced by Fairchild Semiconductor before its acquisition by onsemi. Confirm the package type matches the required 20-Lead PDIP specification. Ensure the component meets the specific LS logic family requirements for your circuit design. Check for any obsolete status or lifecycle changes associated with the original Fairchild production run.

Selection Notes

Select this component when designing systems requiring octal buffering with high fanout capabilities. The inclusion of hysteresis makes it suitable for environments with significant signal noise. Consider the PNP input structure if reducing DC loading on upstream drivers is a priority. Verify that the 3-STATE output configuration aligns with the bus architecture requirements of the target application.

Part Context

This component belongs to the DM74LS series of logic devices, specifically functioning as an octal buffer. It is closely related to the DM74LS240, which provides inverting functionality compared to the non-inverting nature of the DM74LS241. Both devices share similar electrical characteristics and packaging options, differing primarily in their logical inversion properties.

Replacement Considerations

SN74LS241N

FAQ

What is the purpose of the hysteresis feature in this device?

Hysteresis at the data inputs improves noise margins, allowing the device to reject noise more effectively during signal transitions.

How do the PNP inputs benefit the circuit design?

The PNP inputs are designed to reduce DC loading on the bus lines, which can improve overall system performance and drive capability.