74HC20DB,118 NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74HC20DB,118 is a dual 4-input NAND gate logic IC manufactured by Nexperia USA Inc. in a 14-SSOP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The 74HC20 series provides standard logic gating functionality across the 2V to 6V supply voltage range with consistent electrical performance characteristics.

Substiute Parts

74HC20DB,118

Nexperia USA Inc.In Stock: 105974HC20DB,118 Datasheet

Current PartRFQ

74HC20PW,118

NXP USA Inc.In Stock: 5360374HC20PW,118 Datasheet

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SN74HC20PW

Texas InstrumentsIn Stock: 2334SN74HC20PW Datasheet

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SN74HC20PWR

Texas InstrumentsIn Stock: 3762SN74HC20PWR Datasheet

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SN74HC20PWT

Texas InstrumentsIn Stock: 4959SN74HC20PWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC20DB,118 is determined by the following criteria:

Core Functional Parameters (Must Match):

• Logic Type: NAND Gate
• Number of Circuits: 2
• Number of Inputs: 4
• Voltage - Supply: 2V ~ 6V
• Current - Quiescent (Max): 2 µA
• Current - Output High, Low: 5.2mA, 5.2mA
• Input Logic Level - Low: 0.5V ~ 1.8V
• Input Logic Level - High: 1.5V ~ 4.2V
• Mounting Type: Surface Mount

Package Compatibility: The 74HC20DB,118 uses a 14-SSOP package (0.209", 5.30mm width). Substitute parts may use alternative 14-pin surface mount packages (14-TSSOP, 0.173", 4.40mm width) provided pin configuration and electrical characteristics remain compatible.

Acceptable Variations:

• Propagation delay up to 19ns @ 6V, 50pF (original: 15ns)
• Operating temperature range may be narrower (-40°C ~ 85°C acceptable)
• Product status may differ (Active, Discontinued at DiGi Electronics, or Obsolete)
• Manufacturer may vary (Nexperia, Texas Instruments, Motorola)
• Packaging format may differ (Bulk, Tube, Tape & Reel)

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74HC20PWR

The SN74HC20PWR is the preferred substitute for the 74HC20DB,118. This part maintains all core electrical parameters, carries Active product status, and is ROHS3 compliant. The 4ns increase in propagation delay (19ns vs. 15ns) remains within acceptable margins for standard logic applications. Texas Instruments maintains ongoing production and distribution support.

Secondary Recommendation: 74HC20PW,118

The 74HC20PW,118 from NXP USA Inc. provides an alternative with identical propagation delay (15ns) and Active product status. This part is sourced in bulk packaging and represents a direct functional equivalent with minimal performance variation.

Tertiary Options: SN74HC20PW and SN74HC20PWT

Both Texas Instruments parts are functionally equivalent but carry Discontinued at DiGi Electronics status. These parts remain suitable for applications where existing inventory is available, though long-term availability cannot be assured.

Package Consideration:

The original 14-SSOP package (0.209" width) differs from the 14-TSSOP packages (0.173" width) used by substitute parts. PCB layout modifications may be required. Verify pin-to-pin compatibility and footprint requirements before implementation.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC20PWR as a direct replacement for 74HC20DB,118?

A: Yes. The SN74HC20PWR meets all core electrical specifications: dual 4-input NAND gate, 2V to 6V supply voltage, identical quiescent and output current ratings, and matching input logic levels. The 4ns propagation delay increase is within acceptable tolerances for standard logic circuits. Package footprint differences require PCB layout verification.

Q: What is the difference between 14-SSOP and 14-TSSOP packages?

A: Both are 14-pin surface mount packages with identical pin configurations. The 14-SSOP measures 0.209" (5.30mm) in width, while the 14-TSSOP measures 0.173" (4.40mm) in width. The narrower TSSOP package requires different PCB footprints and solder reflow profiles. Consult manufacturer datasheets for specific land pattern and thermal requirements.

Q: Does the operating temperature range difference affect substitution?

A: The 74HC20DB,118 operates from -40°C to 125°C, while Texas Instruments parts operate from -40°C to 85°C. For applications requiring operation above 85°C, the original part or NXP 74HC20PW,118 must be used. For standard industrial and commercial temperature ranges, the reduced upper limit is not a constraint.

Q: Are all substitute parts ROHS3 compliant?

A: The 74HC20DB,118, SN74HC20PW, SN74HC20PWR, and SN74HC20PWT are confirmed ROHS3 compliant. The 74HC20PW,118 does not specify RoHS status in available documentation. Verify compliance requirements with your procurement department before selection.

Q: What packaging formats are available for substitute parts?

A: 74HC20PW,118 is supplied in Bulk format. SN74HC20PW is supplied in Tube format. SN74HC20PWR and SN74HC20PWT are supplied in Tape & Reel (TR) format. Select based on production volume requirements and inventory management practices.

Q: Can I mix different manufacturers in the same production run?

A: Yes. All substitute parts maintain identical electrical specifications and pin configurations. However, verify solder reflow profiles and thermal characteristics with each manufacturer's datasheet, as minor process variations may exist between Nexperia and Texas Instruments implementations.