74HCT165DB,112 Equivalent & Substitute Parts

Part Overview

The 74HCT165DB,112 is an 8-bit parallel-in/serial-out shift register manufactured by Nexperia USA Inc., designed for logic applications requiring data conversion between parallel and serial formats. This component operates within a 4.5V to 5.5V supply voltage range and supports operating temperatures from -40°C to 125°C. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

74HCT165DB,112

Nexperia USA Inc.In Stock: 80274HCT165DB,112 Datasheet

Current PartRFQ

74HCT165PW,118

Nexperia USA Inc.In Stock: 7856874HCT165PW,118 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HCT165DB,112 is determined by strict equivalence across the following critical parameters:

• Logic Type: Shift Register (8-bit configuration)
• Number of Elements: 1
• Number of Bits per Element: 8
• Function: Parallel or Serial to Serial conversion capability
• Output Type: Complementary outputs
• Voltage - Supply: 4.5V ~ 5.5V compatibility
• Operating Temperature Range: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Base Product Number: 74HCT165 series

The 74HCT165PW,118 qualifies as a direct functional substitute based on identical electrical specifications and logic functionality. The primary distinction lies in packaging format and physical dimensions, which must be evaluated against specific board layout and assembly requirements.

Parameter Comparison

Engineering Selection Recommendations

The 74HCT165PW,118 is the qualified substitute for the obsolete 74HCT165DB,112. Both components maintain identical electrical specifications, logic functionality, and compliance certifications (ROHS3 Compliant, REACH Unaffected, EAR99 classification).

The 74HCT165PW,118 offers the additional advantage of active product status, ensuring continued availability and supply chain stability. The component is supplied in Tape & Reel (TR) packaging format with significantly higher inventory availability (78,519 units in stock versus 781 units for the original part).

The primary consideration for substitution is the package transition from 16-SSOP to 16-TSSOP format. The TSSOP package features a reduced width of 4.40mm compared to the SSOP width of 5.30mm. This dimensional change requires PCB layout modification and may necessitate assembly process adjustments. Pin configuration and electrical interface remain functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Are the 74HCT165DB,112 and 74HCT165PW,118 electrically interchangeable?

A: Yes. Both components share identical electrical specifications including supply voltage range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 125°C), logic type (8-bit shift register), function (parallel or serial to serial conversion), and output type (complementary). Electrical functionality is fully equivalent.

Q: What is the primary difference between these two parts?

A: The primary difference is the package format. The 74HCT165DB,112 uses 16-SSOP packaging (0.209" width), while the 74HCT165PW,118 uses 16-TSSOP packaging (0.173" width). Both are surface mount packages with identical pin counts and electrical interfaces.

Q: Does the package change affect PCB design?

A: Yes. The TSSOP package is narrower than the SSOP package. PCB footprints must be updated to accommodate the 16-TSSOP dimensions. Pin pitch and electrical connections remain compatible; only the physical layout footprint requires modification.

Q: Why is the 74HCT165DB,112 listed as obsolete?

A: The 74HCT165DB,112 is classified as obsolete by the manufacturer. The 74HCT165PW,118 represents the active product continuation within the 74HCT165 series, offering improved supply chain availability and long-term support.

Q: Are compliance certifications identical between the two parts?

A: Yes. Both components are ROHS3 Compliant, REACH Unaffected, and classified under ECCN EAR99. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for both parts, indicating no special moisture handling requirements.

Q: What packaging format is the 74HCT165PW,118 supplied in?

A: The 74HCT165PW,118 is supplied in Tape & Reel (TR) format, which is standard for high-volume automated assembly operations.