74LVC377DB,118 Equivalent & Substitute Parts

Part Overview

The 74LVC377DB,118 is a D-Type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., designed for 8-bit parallel data storage and transfer applications. This device features a single 8-bit D-type flip-flop with positive edge triggering, operating across a supply voltage range of 1.65V to 3.6V. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support, maintenance, and production continuity.

Substiute Parts

74LVC377DB,118

Nexperia USA Inc.In Stock: 75074LVC377DB,118 Datasheet

Current PartRFQ

74LVC377PW,118

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC377DB,118 is determined by strict equivalence across the following critical parameters:

Functional Equivalence: The substitute must maintain identical logic function (D-Type flip-flop), element count (1), and bit width (8 bits).

Electrical Compatibility: Clock frequency, propagation delay, output current drive, supply voltage range, quiescent current, and input capacitance must remain within the specified tolerances to ensure direct functional replacement.

Mechanical Compatibility: Package type and mounting method determine physical interchangeability on the PCB. While the 74LVC377DB,118 uses a 20-SSOP package, alternative package variants of the same base product number (74LVC377) may be substituted if the PCB layout and assembly process support the different package dimensions.

Compliance & Status: RoHS compliance, MSL rating, and product status (active vs. obsolete) are critical for supply chain continuity and regulatory adherence.

The 74LVC377PW,118 qualifies as a substitute based on identical functional specifications, electrical parameters, and compliance certifications, with the primary difference being package type (20-TSSOP vs. 20-SSOP).

Parameter Comparison

Engineering Selection Recommendations

The 74LVC377PW,118 is the direct functional equivalent of the 74LVC377DB,118. Both devices share identical logic specifications, electrical performance characteristics, and compliance certifications. The 74LVC377PW,118 holds active product status, ensuring ongoing availability and supply chain support, whereas the 74LVC377DB,118 is classified as obsolete.

The primary distinction between these parts is the package type: the 74LVC377DB,118 uses a 20-SSOP package with a 5.30mm width, while the 74LVC377PW,118 uses a 20-TSSOP package with a 4.40mm width. The 20-TSSOP variant offers a more compact footprint. Selection between these packages depends on PCB layout constraints and assembly process capabilities.

The 74LVC377PW,118 exhibits a lower minimum supply voltage (1.2V vs. 1.65V), providing enhanced flexibility for low-voltage applications while maintaining full compatibility with standard 3.3V and 5V logic systems through appropriate level shifting where required.

Both parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring regulatory adherence and unlimited shelf life under standard storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the 74LVC377PW,118 directly replace the 74LVC377DB,118 on an existing PCB?

A: Direct PCB replacement requires package compatibility. The 74LVC377DB,118 uses a 20-SSOP package, while the 74LVC377PW,118 uses a 20-TSSOP package. These packages have different footprints and pin spacing. PCB redesign or rework is necessary to accommodate the alternative package type.

Q: What is the difference between 20-SSOP and 20-TSSOP packages?

A: Both are surface-mount packages with 20 pins. The 20-SSOP (Shrink Small Outline Package) has a body width of 5.30mm, while the 20-TSSOP (Thin Shrink Small Outline Package) has a body width of 4.40mm. The 20-TSSOP is a more compact variant. Pin pitch and lead configuration differ between the two packages.

Q: Are the electrical specifications identical between these two parts?

A: Yes. Both the 74LVC377DB,118 and 74LVC377PW,118 share identical clock frequency (330 MHz), propagation delay (7.6ns @ 3.3V, 50pF), output current drive (24mA), quiescent current (10 µA), and input capacitance (5 pF). The 74LVC377PW,118 supports a lower minimum supply voltage (1.2V vs. 1.65V).

Q: Why is the 74LVC377DB,118 marked as obsolete?

A: Product status reflects manufacturer lifecycle decisions. The 74LVC377PW,118, sharing identical functionality, is actively produced and represents the current manufacturing standard for this logic function.

Q: Are both parts RoHS compliant?

A: Yes. Both the 74LVC377DB,118 and 74LVC377PW,118 are ROHS3 compliant and carry MSL Level 1 rating, indicating unlimited shelf life under standard storage conditions.

Q: Can I use the 74LVC377PW,118 in applications requiring the 1.65V minimum supply voltage specification?

A: Yes. The 74LVC377PW,118 supports a minimum supply voltage of 1.2V, which is lower than the 1.65V minimum of the 74LVC377DB,118. This provides enhanced compatibility for low-voltage applications.