CD74HC20M NAND Gate IC Equivalent & Substitute Parts

Part Overview

The CD74HC20M is a 2-channel, 4-input NAND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement. The 74HC20 logic family provides standard NAND gate functionality across multiple manufacturers and packaging options, enabling direct substitution based on electrical and mechanical compatibility.

Substiute Parts

CD74HC20M

Texas InstrumentsIn Stock: 3416CD74HC20M Datasheet

Current PartRFQ

CD74HC20M96

Texas InstrumentsIn Stock: 5286CD74HC20M96 Datasheet

DirectRFQ

74HC20D,652

NXP SemiconductorsIn Stock: 8577774HC20D,652 Datasheet

MFR RecommendedRFQ

74HC20D,653

NXP SemiconductorsIn Stock: 382474HC20D,653 Datasheet

MFR RecommendedRFQ

74HC20D-Q100,118

Nexperia USA Inc.In Stock: 71974HC20D-Q100,118 Datasheet

MFR RecommendedRFQ

MC74HC20ADG

onsemiIn Stock: 6243MC74HC20ADG Datasheet

MFR RecommendedRFQ

MC74HC20ADR2G

onsemiIn Stock: 3649MC74HC20ADR2G Datasheet

MFR RecommendedRFQ

NLV74HC20ADR2G

onsemiIn Stock: 787NLV74HC20ADR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC20M is determined by strict equivalence across the following parameters:

• Logic Function: All substitutes must be 2-channel, 4-input NAND gates (74HC20 base product number)
• Electrical Specifications: Supply voltage range (2V–6V), quiescent current, output current, input logic levels, and propagation delay must be compatible
• Package Compatibility: 14-SOIC surface mount package with identical pin configuration and mechanical dimensions
• Compliance Standards: RoHS3 compliance and MSL Level 1 rating required for all substitutes
• Operational Temperature: Minimum -55°C to 125°C range or equivalent

Substitutes are grouped by manufacturer and packaging format. Differences in quiescent current (1 µA vs. 2 µA) and propagation delay (15ns vs. 17ns vs. 23ns) do not prevent substitution when all other parameters remain within specification. Automotive-grade variants (AEC-Q100) are functionally equivalent but serve specialized applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CD74HC20M96 (Texas Instruments) is the direct equivalent replacement, maintaining identical electrical specifications and operating temperature range while offering active product status and improved packaging availability in Cut Tape and Digi-Reel formats.

Active Alternatives:

• MC74HC20ADG and MC74HC20ADR2G (onsemi) provide superior performance with lower quiescent current (1 µA vs. 2 µA) and faster propagation delay (15ns vs. 17ns), with full temperature range support (-55°C to 125°C).
• 74HC20D,652 and 74HC20D,653 (NXP Semiconductors) are active alternatives with high inventory availability, though detailed electrical specifications are not provided in this reference.
• 74HC20D-Q100,118 (Nexperia USA Inc.) is an automotive-grade variant (AEC-Q100 qualified) suitable for applications requiring automotive qualification, with slightly reduced operating temperature minimum (-40°C vs. -55°C).

Avoid: NLV74HC20ADR2G is marked obsolete and exhibits degraded propagation delay (23ns), making it unsuitable for new designs despite technical compatibility.

All recommended substitutes maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can I substitute CD74HC20M with CD74HC20M96? A: Yes. CD74HC20M96 is a direct equivalent with identical electrical specifications, operating temperature range, and 14-SOIC package. The primary difference is packaging format (Cut Tape & Digi-Reel vs. Tube) and active product status.

Q: What is the difference between the onsemi MC74HC20ADG and MC74HC20ADR2G variants? A: Both parts are electrically identical with 1 µA quiescent current and 15ns propagation delay. The difference is packaging: MC74HC20ADG is supplied in Tube format, while MC74HC20ADR2G is supplied in Tape & Reel format. Selection depends on your procurement and assembly requirements.

Q: Are NXP 74HC20D,652 and 74HC20D,653 suitable replacements? A: Yes, both are active NXP alternatives with the same 74HC20 base product number and 2V–6V supply range. However, detailed electrical specifications are not provided in this reference. Verify propagation delay and quiescent current specifications against your design requirements before selection.

Q: Can I use the automotive-grade 74HC20D-Q100,118 in non-automotive applications? A: Yes. The automotive-grade variant is functionally compatible and offers AEC-Q100 qualification. The operating temperature minimum is -40°C (vs. -55°C for standard grades), which is acceptable for most commercial applications. Use this part if automotive qualification is required or if inventory availability favors it.

Q: Why is NLV74HC20ADR2G listed as obsolete? A: NLV74HC20ADR2G is marked obsolete by the manufacturer. While electrically functional, it exhibits slower propagation delay (23ns vs. 15–17ns) and should not be selected for new designs. Existing inventory may be available but represents end-of-life stock.

Q: Are all these parts pin-compatible with the CD74HC20M? A: Yes. All substitutes use the 14-SOIC package with identical pin configuration and mechanical dimensions (0.154", 3.90mm width), ensuring direct PCB compatibility without layout modifications.

Q: What compliance certifications apply to all substitutes? A: All recommended substitutes are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, meeting standard industrial and commercial manufacturing requirements.