74HC373DB,112 Equivalent & Substitute Parts

Part Overview

The 74HC373DB,112 is a D-Type Transparent Latch logic IC manufactured by Nexperia USA Inc., featuring an 8:8 channel configuration with tri-state output in a 20-SSOP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74HC373 series maintains consistent functional specifications across multiple manufacturers and package variants, enabling direct substitution based on electrical and mechanical compatibility parameters.

Substiute Parts

74HC373DB,112

Nexperia USA Inc.In Stock: 85074HC373DB,112 Datasheet

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74HC373PW,118

Nexperia USA Inc.In Stock: 832074HC373PW,118 Datasheet

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MM74HC373MTC

Fairchild SemiconductorIn Stock: 2953MM74HC373MTC Datasheet

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MM74HC373MTCX

onsemiIn Stock: 16703MM74HC373MTCX Datasheet

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SN74HC373DBR

Texas InstrumentsIn Stock: 1989SN74HC373DBR Datasheet

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SN74HC373PW

Texas InstrumentsIn Stock: 1545SN74HC373PW Datasheet

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SN74HC373PWR

Texas InstrumentsIn Stock: 2479SN74HC373PWR Datasheet

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SN74HC373PWT

Texas InstrumentsIn Stock: 2155SN74HC373PWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC373DB,112 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Logic Type: D-Type Transparent Latch (must match)
• Circuit Configuration: 8:8 (must match)
• Output Type: Tri-State (must match)
• Supply Voltage Range: 2V ~ 6V (must match)
• Independent Circuits: 1 (must match)
• Output Current: 7.8mA / 7.8mA (must match)

Mechanical Compatibility Requirements:

• Package Type: 20-SSOP or 20-TSSOP (pin-compatible variants)
• Mounting Type: Surface Mount (must match)
• Base Product Number: 74HC373 (must match)

Acceptable Variations:

• Manufacturer: Different manufacturers within the 74HC373 series are functionally equivalent
• Propagation Delay: Variations between 12ns and 19ns are acceptable (all within logic family specifications)
• Operating Temperature Range: -40°C ~ 85°C or -40°C ~ 125°C (both acceptable for standard industrial applications)
• Packaging Format: Cut Tape, Tape & Reel, Tube, or Bulk (does not affect electrical function)
• Product Status: Active or Discontinued at DiGi Electronics (both available for procurement)

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

For applications requiring the 20-SSOP package footprint identical to the original 74HC373DB,112, select SN74HC373DBR (Texas Instruments). This part maintains the same package geometry, is currently active in production, and carries ROHS3 compliance with unlimited moisture sensitivity rating.

For applications where package transition to 20-TSSOP is acceptable, select either 74HC373PW,118 (Nexperia USA Inc.) or SN74HC373PWR (Texas Instruments). Both are active products with full compliance certifications. The 74HC373PW,118 offers the closest electrical match with 12ns propagation delay identical to the original part.

Secondary Substitutes (Alternative Sources):

MM74HC373MTCX (onsemi) and MM74HC373MTC (Fairchild Semiconductor) provide functionally equivalent alternatives in 20-TSSOP packaging with 19ns propagation delay. Both maintain full compliance and are available in active production status with high inventory levels.

Compliance Considerations:

All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols. REACH status is unaffected across all variants.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 74HC373DB,112 (20-SSOP) with a 20-TSSOP package variant?

A: Yes. Both 20-SSOP and 20-TSSOP packages are pin-compatible for the 74HC373 series. The primary difference is package width (5.30mm vs. 4.40mm). PCB layout modifications are required to accommodate the narrower TSSOP footprint. Electrical function remains identical.

Q: What is the significance of propagation delay differences (12ns vs. 15ns vs. 19ns)?

A: All propagation delay values fall within the 74HC logic family specification envelope. Selection depends on application timing requirements. The 12ns specification (74HC373DB,112 and 74HC373PW,118) provides the fastest response. The 15ns variants (Texas Instruments) and 19ns variants (Fairchild, onsemi) are suitable for standard logic applications where timing margins are not critical.

Q: Are there any restrictions on mixing manufacturers in the same design?

A: No. All 74HC373 variants from different manufacturers are electrically and mechanically interchangeable within the specified parameters. Multi-source procurement strategies are supported.

Q: What is the difference between "Active" and "Discontinued at DiGi Electronics" product status?

A: "Active" indicates ongoing production by the manufacturer with standard availability. "Discontinued at DiGi Electronics" indicates the part is no longer stocked by this specific distributor but may remain available through other channels or in existing inventory. For new designs, prioritize "Active" status parts for long-term supply assurance.

Q: Does operating temperature range affect substitution eligibility?

A: The 74HC373DB,112 specifies -40°C ~ 125°C. Substitutes with -40°C ~ 85°C range are acceptable for applications operating within the narrower temperature band. If your application requires the full -40°C ~ 125°C range, select 74HC373PW,118 (Nexperia) as the primary substitute.

Q: Are all listed parts ROHS3 compliant?

A: Yes. All substitute parts carry ROHS3 compliance certification, ensuring compatibility with environmental and regulatory requirements.