74LVC377DB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC377DB,112 is a D-Type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., designed for 8-bit parallel data storage and synchronization applications. This device features a single element with 8 bits per element, operating at a maximum clock frequency of 330 MHz with a propagation delay of 7.6ns at 3.3V and 50pF load. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and component procurement.

Substiute Parts

74LVC377DB,112

Nexperia USA Inc.In Stock: 119174LVC377DB,112 Datasheet

Current PartRFQ

74LVC377PW,118

Nexperia USA Inc.In Stock: 1044574LVC377PW,118 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC377DB,112 is determined by strict equivalence across the following critical parameters:

• Base Product Number: Both parts must share the 74LVC377 base designation, ensuring identical logic function and pin configuration
• Function and Type: D-Type flip-flop with 1 element and 8 bits per element
• Electrical Performance: Clock frequency of 330 MHz, propagation delay of 7.6ns @ 3.3V/50pF, output current of 24mA, and supply voltage range compatibility
• Trigger Mechanism: Positive edge triggering
• Output Configuration: Non-inverted outputs
• Operating Temperature Range: -40°C to 125°C
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The primary distinction between the main part and its substitute lies in packaging format and supply voltage range specification, not in functional or electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The 74LVC377PW,118 serves as a direct functional substitute for the 74LVC377DB,112 based on the following engineering criteria:

Functional Equivalence: Both parts implement identical D-Type flip-flop logic with 8-bit parallel storage, matching clock frequency, propagation delay, output current, and trigger characteristics.

Product Status Advantage: The 74LVC377PW,118 maintains active product status with Nexperia USA Inc., ensuring continued availability and manufacturing support, whereas the 74LVC377DB,112 is obsolete.

Compliance Certification: Both parts maintain ROHS3 compliance and MSL Level 1 rating, meeting identical environmental and reliability standards.

Supply Voltage Consideration: The 74LVC377PW,118 specifies a lower minimum supply voltage of 1.2V compared to 1.65V for the 74LVC377DB,112, providing expanded operational flexibility in low-voltage applications while maintaining full compatibility at standard 3.3V and 5V logic levels.

Package Transition: The primary physical difference is the package format change from 20-SSOP to 20-TSSOP. The 20-TSSOP package is narrower (4.40mm versus 5.30mm width), requiring PCB layout modification but offering improved board density. Pin count and electrical connectivity remain identical.

Frequently Asked Questions (FAQ)

Q: Are the 74LVC377DB,112 and 74LVC377PW,118 pin-compatible?

A: Yes. Both parts use the 20-pin SSOP/TSSOP package family with identical pin assignments and electrical connections. The difference is package width: SSOP at 5.30mm versus TSSOP at 4.40mm. PCB footprint modification is required.

Q: Can I use the 74LVC377PW,118 as a direct replacement without circuit modification?

A: Electrical substitution is direct. Physical PCB layout must be updated to accommodate the narrower TSSOP package footprint. No schematic changes are required.

Q: What is the significance of the supply voltage range difference (1.65V vs 1.2V minimum)?

A: The 74LVC377PW,118 supports operation at lower supply voltages down to 1.2V, whereas the 74LVC377DB,112 requires minimum 1.65V. For applications operating at 3.3V or higher, this difference is not a limiting factor. For ultra-low-voltage designs, the 74LVC377PW,118 provides additional operational margin.

Q: Why is the 74LVC377DB,112 listed as obsolete?

A: Nexperia USA Inc. has transitioned production to the 74LVC377PW,118 variant, which offers the same functional performance with improved package density and lower minimum supply voltage specification.

Q: Are there any performance differences between these parts?

A: No. Clock frequency, propagation delay, output current, quiescent current, input capacitance, and operating temperature range are identical. Both parts deliver equivalent electrical performance.

Q: What packaging format should I specify for new designs?

A: The 74LVC377PW,118 in 20-TSSOP format is the active product. For legacy board support of existing 74LVC377DB,112 designs, the SSOP package remains available through inventory channels, but new designs should transition to the TSSOP variant.