74AC20SJX

Overview

The onsemi 74AC20SJX 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 outputs capable of sourcing or sinking 24mA. Propagation delays are specified at 10ns maximum at 5V with 50pF load. It utilizes a 14-lead Small Outline Package (SOP) conforming to EIAJ TYPE II standards.

Feature Summary

• Dual 4-input NAND logic functionality
• High output drive capability of 24mA
• Reduced quiescent current consumption

Applications

• General digital logic circuits
• Timing and control applications
• Signal gating and switching

Procurement Notes

Verify the specific package variant, as the SJ designation indicates a 14-lead SOP (EIAJ TYPE II). Confirm lead-free status per JEDEC J-STD-020B. Check for obsolete status if sourced from legacy Fairchild inventory. Ensure the X suffix is correctly applied for tape and reel packaging requirements.

Selection Notes

Select this component for designs requiring high-speed NAND operations with moderate drive strength. Verify input voltage thresholds align with the system logic levels across the full operating temperature range. Consider the 14-lead SOP footprint constraints during PCB layout planning.

Part Context

This part belongs to the 74AC series of high-speed CMOS logic devices. It serves as a direct functional replacement for older 74LS20 TTL equivalents while offering lower power consumption and higher speed. The device integrates two independent 4-input NAND gates into a single compact package.

Replacement Considerations

Check for equivalent parts in the 74AC20 family from other manufacturers. Verify pinout compatibility and electrical specifications before substitution.