74HC377D,653 Equivalent & Substitute Parts

Part Overview

The 74HC377D,653 is a D-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., designed for 8-bit data storage and synchronization applications. This component features positive edge triggering, non-inverted outputs, and operates across a 2V to 6V supply voltage range. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are necessary when the primary part becomes unavailable due to supply constraints, manufacturing discontinuation, or when alternative sourcing from different manufacturers offers cost or logistics advantages while maintaining functional and electrical compatibility.

Substiute Parts

74HC377D,653

Nexperia USA Inc.In Stock: 151574HC377D,653 Datasheet

Current PartRFQ

CD74HC377M

Harris CorporationIn Stock: 7963CD74HC377M Datasheet

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CD74HC377M96

Texas InstrumentsIn Stock: 5106CD74HC377M96 Datasheet

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MC74HC377ADWR2G

onsemiIn Stock: 2169MC74HC377ADWR2G Datasheet

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SN74HC377DWR

Texas InstrumentsIn Stock: 3619SN74HC377DWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the 74HC377D,653 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Package type: 20-SOIC (0.295", 7.50mm Width)
• Function: D-Type flip-flop with 8-bit configuration
• Trigger type: Positive edge
• Output type: Non-inverted
• Voltage supply range: 2V ~ 6V (minimum overlap required)
• Pin configuration: Identical to base product number 74HC377

Performance Parameters:

• Clock frequency and propagation delay determine speed class compatibility
• Operating temperature range must support the application requirements
• Quiescent current and output current ratings must meet circuit demands

All four substitute parts listed (CD74HC377M, CD74HC377M96, MC74HC377ADWR2G, SN74HC377DWR) share the identical 74HC377 base product architecture and 20-SOIC package, confirming functional and mechanical interchangeability within the specified electrical operating parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: CD74HC377M96 (Texas Instruments)

This part is the preferred substitute due to active product status, ROHS3 compliance, REACH unaffected designation, and unlimited moisture sensitivity rating (MSL 1). Performance parameters are within acceptable tolerance of the main part, with 30ns propagation delay versus 27ns for the primary device. Tape & Reel packaging matches the original sourcing format.

Secondary Recommendation: SN74HC377DWR (Texas Instruments)

This part maintains active status with ROHS3 compliance and REACH unaffected certification. It offers the lowest input capacitance (3 pF) and fastest propagation delay matching the main part (27ns). Operating temperature range is limited to -40°C ~ 85°C, which may restrict use in extended temperature applications. Cut Tape & Digi-Reel packaging is suitable for moderate volume requirements.

Conditional Use: MC74HC377ADWR2G (onsemi)

This part is obsolete but remains available in inventory. ROHS3 compliance and REACH unaffected status are confirmed. Moisture sensitivity level 3 (168 hours) requires controlled storage and handling procedures. Lower quiescent current (4 µA) provides power consumption advantage. Substitution is acceptable only when extended temperature range (-55°C ~ 125°C) is required and MSL 3 handling protocols are implemented.

Not Recommended: CD74HC377M (Harris Corporation)

This part is obsolete with RoHS non-compliance. Substitution introduces regulatory risk and supply continuity concerns. Use only when no alternative is available and RoHS exemption is documented.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC377DWR if my application requires operation below -40°C?

A: No. The SN74HC377DWR operating temperature range is -40°C ~ 85°C. For applications requiring temperatures below -40°C, use CD74HC377M96 (-55°C ~ 125°C) or MC74HC377ADWR2G (-55°C ~ 125°C).

Q: What is the impact of different propagation delays between substitute parts?

A: The main part (74HC377D,653) and three active substitutes (CD74HC377M96, MC74HC377ADWR2G, SN74HC377DWR) specify 27ns or 30ns propagation delay at 6V with 50pF load. This 3ns maximum difference is negligible for most digital logic applications. Verify timing margins in high-speed designs exceeding 60 MHz clock frequencies.

Q: Are all substitute parts pin-compatible with the 74HC377D,653?

A: Yes. All substitute parts use the identical 20-SOIC package and 74HC377 base product architecture, confirming 1:1 pin compatibility without PCB modification.

Q: Which substitute part has the lowest power consumption?

A: MC74HC377ADWR2G specifies 4 µA quiescent current compared to 8 µA for the main part and other substitutes. This represents a 50% reduction in standby current consumption.

Q: Can I substitute CD74HC377M (Harris Corporation) in a new design?

A: No. CD74HC377M is obsolete and RoHS non-compliant. Use CD74HC377M96 or SN74HC377DWR for new designs to ensure regulatory compliance and long-term supply availability.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® is appropriate for moderate volumes and manual handling. Both formats contain identical components; packaging selection depends on production volume and assembly equipment compatibility.

Q: Does MSL 3 rating on MC74HC377ADWR2G affect usability?

A: MSL 3 (168 hours) requires controlled storage at ≤30°C and ≤60% relative humidity. Parts must be used within 168 hours of bag opening. MSL 1 parts (unlimited) have no such restrictions. Verify warehouse and assembly floor conditions support MSL 3 handling before selecting this part.