SN74LVC16374AZQLR Equivalent & Substitute Parts

Part Overview

The SN74LVC16374AZQLR is a dual 8-bit D-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 56-VFBGA package. This device functions as a standard positive-edge-triggered flip-flop with tri-state, non-inverted outputs, operating across a supply voltage range of 1.65V to 3.6V. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

SN74LVC16374AZQLR

Texas InstrumentsIn Stock: 2882SN74LVC16374AZQLR Datasheet

Current PartRFQ

SN74ALVCH16374DGVR

Texas InstrumentsIn Stock: 2360SN74ALVCH16374DGVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LVC16374AZQLR is determined by the following critical parameters:

• Functional equivalence: Dual 8-bit D-type flip-flop with positive-edge trigger and tri-state, non-inverted outputs
• Electrical compatibility: Supply voltage range 1.65V to 3.6V, clock frequency 150 MHz, output current capability 24 mA
• Timing specifications: Maximum propagation delay and setup/hold time characteristics
• Package compatibility: Physical form factor and pin configuration
• Compliance standards: RoHS3 compliance and REACH status

The SN74ALVCH16374DGVR qualifies as a manufacturer-recommended substitute based on matching functional architecture, electrical specifications, and compliance certifications, despite differences in package type and certain secondary parameters.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALVCH16374DGVR is designated as the manufacturer-recommended substitute for the obsolete SN74LVC16374AZQLR. Selection of this alternative is supported by the following factors:

• Active product status: The substitute maintains active production status with Texas Instruments, ensuring long-term availability and supply chain continuity
• Functional equivalence: Both devices implement identical dual 8-bit D-type flip-flop architecture with matching output configurations and trigger characteristics
• Electrical compatibility: Supply voltage, clock frequency, output current, and operating temperature ranges are identical across both parts
• Performance improvement: The substitute exhibits faster propagation delay (4.2 ns versus 4.5 ns), providing enhanced timing margin
• Compliance alignment: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements
• Package transition: The shift from 56-VFBGA to 48-TFSOP represents a reduction in pin count and package footprint, requiring PCB layout redesign

Frequently Asked Questions (FAQ)

Q: Can the SN74ALVCH16374DGVR directly replace the SN74LVC16374AZQLR without PCB modification?

A: No. The substitute uses a different package type (48-TFSOP versus 56-VFBGA), requiring PCB layout redesign and component footprint changes. Pin-to-pin correspondence must be verified against device datasheets before implementation.

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

A: The core electrical specifications are compatible. Both operate at 1.65V to 3.6V supply voltage with 150 MHz clock frequency and 24 mA output current. The substitute exhibits lower propagation delay (4.2 ns versus 4.5 ns) and higher quiescent current (40 µA versus 20 µA).

Q: Why is the original part classified as obsolete?

A: The SN74LVC16374AZQLR is marked obsolete by Texas Instruments. The manufacturer recommends transitioning to the SN74ALVCH16374DGVR for new designs and ongoing production support.

Q: Does the substitute meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the primary difference in package configuration?

A: The original uses a 56-pin BGA package (56-VFBGA, 7x4.5mm), while the substitute uses a 48-pin thin fine-pitch shrink small outline package (48-TFSOP, 0.173" width, 4.40mm). This represents a significant reduction in pin count and physical footprint.