DM74ALS541SJX

Overview

The DM74ALS541SJX is an octal buffer and line driver manufactured by onsemi, formerly Fairchild Semiconductor. It utilizes an advanced oxide-isolated ion-implanted Schottky TTL process to deliver high-speed performance. The device features a data flow-thru pinout configuration with inputs and outputs positioned on opposite sides of the package to facilitate circuit board layout. It includes two control inputs (G1 and G2) forming a NOR gate for 3-STATE output management. Operating conditions specify a supply voltage range of 4.5V to 5.5V and a free-air operating temperature range of 0°C to +70°C.

Feature Summary

• Advanced oxide-isolated ion-implanted Schottky TTL process technology
• Data flow-thru pinout arrangement with inputs and outputs on opposite package sides
• Dual control inputs (G1 and G2) configured as a NOR gate for 3-STATE operation
• P-N-P input structure designed to reduce DC loading

Applications

• Memory systems requiring octal buffering
• Microprocessor systems utilizing bus drivers
• Asynchronous bidirectional data buses
• Circuit boards requiring optimized layout through opposite-side I/O placement

Procurement Notes

Verify that the ordering code explicitly includes the 'SJ' suffix to confirm the specific 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide form factor. Ensure the 'X' suffix is present if tape and reel packaging is required rather than standard tube packaging. Confirm manufacturer lineage from Fairchild Semiconductor or current rights holder onsemi for component authenticity.

Selection Notes

Select this component when a non-inverting octal buffer with 3-STATE outputs is required in a small outline package. The choice is driven by the need for a data flow-thru pinout to simplify PCB routing compared to standard parallel I/O layouts. Verify compatibility with ALS logic family voltage levels and ensure the dual enable control mechanism fits the system design requirements.

Part Context

This part belongs to the DM74ALS541 series of octal buffers and line drivers. It is functionally comparable to the DM74ALS240A series but distinguished by its unique pinout arrangement. The device is part of the broader 74ALS logic family, characterized by advanced low-power Schottky performance. The SJ variant specifically denotes the SOP package style within the product lineup.

Replacement Considerations

Direct substitutes include other DM74ALS541 variants such as DM74ALS541WM (SOIC) or DM74ALS541N (PDIP). Cross-family replacements like SN74ALS541 may be considered if pinout differences are accommodated.