74AC20SJ

Overview

The onsemi 74AC20SJ is a dual 4-input NAND gate manufactured using AC CMOS technology. It operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature from -40°C to +85°C. The device features TTL-compatible input thresholds and outputs capable of sourcing or sinking 24mA. Propagation delays are specified at 10ns maximum at 5V with 50pF load, while quiescent supply current is limited to 20µA.

Feature Summary

• Dual 4-input NAND logic function
• TTL-compatible input/output levels
• High output drive capability

Applications

• General digital logic processing
• Signal gating applications
• Data routing circuits

Procurement Notes

Verify the specific package designation for the SJ suffix (EIAJ SOP) against the required footprint. Confirm lead-free compliance status as per JEDEC standards. Check current production status, as this component may be discontinued by Fairchild Semiconductor. Ensure compatibility with existing PCB land patterns before finalizing procurement.

Selection Notes

Select this component when a dual 4-input NAND gate with high-speed AC performance is required. Verify that the 24mA output drive meets system load requirements. Ensure the 2V to 6V supply range aligns with the target circuit design. Consider the EIAJ SOP package dimensions for mechanical fit.

Part Context

This part belongs to the 74AC logic family, offering faster switching speeds than standard 74LS devices. Originally manufactured by Fairchild Semiconductor, it provides a robust solution for general-purpose digital logic applications requiring multiple inputs and moderate drive strength.

Replacement Considerations

Check for equivalents such as MC74AC20DG or 74AC20SCX. Verify pinout compatibility and package dimensions before substitution.