PI74ALVTC16374A Equivalent & Substitute Parts

Part Overview

The PI74ALVTC16374A is a dual 8-bit D-type flip-flop logic integrated circuit manufactured by Diodes Incorporated, housed in a 48-TFSOP surface mount 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 1.8V to 3.6V. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

PI74ALVTC16374A

Diodes IncorporatedIn Stock: 826PI74ALVTC16374A Datasheet

Current PartRFQ

SN74LVC16374ADGGR

Texas InstrumentsIn Stock: 3435SN74LVC16374ADGGR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PI74ALVTC16374A is determined by strict alignment of the following critical parameters:

Functional Equivalence: Both the main part and substitute must be dual 8-bit D-type flip-flops with positive edge triggering and tri-state, non-inverted outputs.

Package Compatibility: The 48-TFSOP (0.240", 6.10mm Width) surface mount package must be identical to ensure PCB layout compatibility without redesign.

Electrical Operating Range: The supply voltage range and operating temperature range must encompass or match the original specification to ensure reliable operation in the target application.

Output Characteristics: Output type (tri-state, non-inverted) and drive capability (output current ratings) must be compatible with the circuit requirements.

Timing Performance: Clock frequency and propagation delay specifications must meet or exceed the original part's performance to maintain system timing margins.

The SN74LVC16374ADGGR from Texas Instruments satisfies these substitution criteria through identical functional architecture, package form factor, and compatible electrical specifications within the defined operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The SN74LVC16374ADGGR is the qualified substitute for the obsolete PI74ALVTC16374A based on the following engineering criteria:

Product Status: The original PI74ALVTC16374A is classified as obsolete, creating supply chain risk. The SN74LVC16374ADGGR maintains active product status with established manufacturing continuity and availability.

Regulatory Compliance: The substitute part is ROHS3 compliant, whereas the original is RoHS non-compliant. This distinction is significant for applications subject to RoHS directives and environmental regulations.

Functional Compatibility: Both parts are dual 8-bit D-type flip-flops with identical output architecture (tri-state, non-inverted) and positive edge triggering, ensuring functional interchangeability at the logic level.

Package Equivalence: Both devices utilize the 48-TFSOP surface mount package with identical physical dimensions (0.240", 6.10mm Width), permitting direct PCB substitution without layout modification.

Electrical Operating Range: The substitute's supply voltage range (1.65V ~ 3.6V) encompasses the original specification (1.8V ~ 3.6V), and both operate across the identical temperature range (-40°C ~ 85°C).

Performance Trade-offs: The substitute exhibits lower clock frequency (150 MHz vs. 250 MHz) and increased propagation delay (4.5 ns vs. 3.2 ns). These parameters must be evaluated against specific application timing requirements to confirm suitability.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC16374ADGGR be used as a direct replacement for the PI74ALVTC16374A?

A: Yes, the SN74LVC16374ADGGR is functionally and physically compatible. Both are dual 8-bit D-type flip-flops in the 48-TFSOP package with tri-state, non-inverted outputs and positive edge triggering. No PCB redesign is required for substitution.

Q: What are the key differences between these two parts?

A: The primary differences are clock frequency (250 MHz vs. 150 MHz), propagation delay (3.2 ns vs. 4.5 ns), output current ratings (32/64 mA vs. 24/24 mA), quiescent current (50 µA vs. 20 µA), and product status (obsolete vs. active). The substitute also offers ROHS3 compliance versus non-compliance in the original.

Q: Will the lower clock frequency of the substitute affect my application?

A: The substitute's 150 MHz clock frequency and 4.5 ns propagation delay must be evaluated against your specific timing requirements. If your design operates below these performance thresholds, the substitute is suitable. If your design requires the original's 250 MHz performance, timing analysis is necessary to determine compatibility.

Q: Are the output current ratings compatible?

A: The original part provides 32 mA high and 64 mA low output current, while the substitute provides 24 mA for both high and low. If your circuit requires the higher output current of the original, load analysis is necessary to confirm the substitute's adequacy.

Q: Does the substitute's lower quiescent current provide any advantage?

A: Yes. The substitute's quiescent current of 20 µA is lower than the original's 50 µA, resulting in reduced power consumption during idle states. This is beneficial for battery-powered or power-sensitive applications.

Q: Is the 48-TFSOP package identical between both parts?

A: Yes. Both parts use the 48-TFSOP (0.240", 6.10mm Width) surface mount package with identical pinout and physical dimensions, enabling direct PCB substitution.

Q: What is the significance of the RoHS compliance difference?

A: The original PI74ALVTC16374A is RoHS non-compliant, while the substitute SN74LVC16374ADGGR is ROHS3 compliant. For applications subject to RoHS directives or environmental regulations, the substitute's compliance status is advantageous.

Q: Are both parts rated for the same operating temperature range?

A: Yes. Both parts operate across -40°C to 85°C, ensuring thermal compatibility across the full operating envelope.