SN74ALS573CNG4 Equivalent & Substitute Parts

Part Overview

The SN74ALS573CNG4 is a D-Type Transparent Latch IC featuring 1 channel with 8:8 configuration and tri-state output capability. This component is designed for digital logic applications requiring transparent latch functionality in a 20-PDIP package. The part is currently discontinued at DiGi Electronics, making identification of suitable substitutes essential for ongoing system support and procurement planning.

Substiute Parts

SN74ALS573CNG4

Texas InstrumentsIn Stock: 860SN74ALS573CNG4 Datasheet

Current PartRFQ

SN74ALS573CN

Texas InstrumentsIn Stock: 2299SN74ALS573CN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ALS573CNG4 is determined by strict equivalence across the following critical parameters:

• Logic Type & Circuit Configuration: Must be D-Type Transparent Latch with 8:8 configuration
• Output Characteristics: Tri-state output capability required
• Electrical Specifications: Supply voltage 4.5V ~ 5.5V, propagation delay 2ns, output current ratings 2.6mA (high) and 24mA (low)
• Package & Mounting: 20-DIP through-hole package with identical physical dimensions
• Operating Temperature: 0°C ~ 70°C range
• Base Product Number: 74ALS573 series designation

The SN74ALS573CN qualifies as a direct substitute based on complete alignment with all specified parameters. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS573CN is the recommended substitute for the discontinued SN74ALS573CNG4. Both parts maintain identical electrical and functional specifications, ensuring direct compatibility in existing circuit designs. The SN74ALS573CN offers the advantage of active product status, providing improved availability and supply chain continuity.

Both parts satisfy ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The electrical performance characteristics—including propagation delay, output current ratings, and supply voltage specifications—are equivalent, eliminating the need for circuit redesign or validation.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS573CN be used as a direct replacement for the SN74ALS573CNG4?

A: Yes. Both parts are electrically and functionally identical. They share the same logic type, circuit configuration, output characteristics, supply voltage range, propagation delay, output current ratings, operating temperature range, and 20-DIP package specification. No circuit modifications are required.

Q: What is the primary difference between these two parts?

A: The SN74ALS573CNG4 is discontinued at DiGi Electronics, while the SN74ALS573CN maintains active product status. The packaging format differs (the substitute uses tube packaging), but the component itself is identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry the same ECCN classification (EAR99). Regulatory compliance is equivalent.

Q: Does the 20-DIP package specification remain the same?

A: Yes. Both parts use the identical 20-DIP (0.300", 7.62mm) through-hole package. PCB footprints and mounting procedures are unchanged.

Q: What inventory considerations should be evaluated?

A: The SN74ALS573CN has 2200 units in stock, compared to 810 units for the discontinued SN74ALS573CNG4. The active status of the substitute ensures continued availability for future procurement cycles.