SN74ALVTH16601DL Universal Bus Transceiver 18-Bit Equivalent & Substitute Parts

Part Overview

The SN74ALVTH16601DL is an 18-bit universal bus transceiver manufactured by Texas Instruments, housed in a 56-BSSOP surface mount package. This component is classified as obsolete, indicating it has been discontinued and is no longer in active production. The part operates across a supply voltage range of 2.3V to 2.7V with output drive capabilities of 8mA for both high and low states. Due to its obsolete status, identifying compatible substitute parts is essential for ongoing system maintenance, redesign efforts, and procurement continuity.

Substiute Parts

SN74ALVTH16601DL

Texas InstrumentsIn Stock: 1082SN74ALVTH16601DL Datasheet

Current PartRFQ

SN74ALVCH16601DLR

Texas InstrumentsIn Stock: 4297SN74ALVCH16601DLR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the SN74ALVTH16601DL is determined by the following critical parameters:

Functional Equivalence: Both the main part and substitute must be 18-bit universal bus transceivers with identical logic functionality.

Package Compatibility: The physical package must be 56-BSSOP with matching pin configuration and footprint dimensions (0.295", 7.50mm Width) to ensure direct PCB compatibility without layout modifications.

Electrical Operating Range: The substitute part must support the operating temperature range of -40°C to 85°C. Supply voltage compatibility is evaluated based on system requirements; the substitute may operate across a wider voltage range provided the system's nominal supply voltage falls within the substitute's specified range.

Output Drive Capability: The substitute part must deliver sufficient output current to meet circuit load requirements. Enhanced drive capability (higher output current) is acceptable and provides design margin.

Compliance and Certification: Both parts must maintain equivalent RoHS and REACH compliance status to satisfy regulatory and procurement requirements.

The SN74ALVCH16601DLR qualifies as a direct substitute based on these criteria: identical 18-bit transceiver function, matching 56-BSSOP package, compatible operating temperature range, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALVCH16601DLR is the manufacturer-recommended substitute for the obsolete SN74ALVTH16601DL. Selection of this substitute is justified on the following engineering grounds:

Product Status: The SN74ALVCH16601DLR maintains active production status, ensuring long-term availability and supply chain continuity compared to the discontinued SN74ALVTH16601DL.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements without additional qualification.

Functional Compatibility: The 18-bit universal bus transceiver architecture is preserved, maintaining pin-for-pin and functional equivalence.

Enhanced Electrical Performance: The substitute part provides increased output drive capability (24mA versus 8mA) and operates across a wider supply voltage range (1.65V to 3.6V versus 2.3V to 2.7V), offering improved design margin and flexibility for system integration.

Physical Compatibility: Identical package specification (56-BSSOP) ensures direct PCB compatibility without layout or assembly modifications.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALVCH16601DLR be used as a direct replacement for the SN74ALVTH16601DL?

A: Yes. Both parts share identical 18-bit universal bus transceiver functionality, pin configuration, and 56-BSSOP package footprint. The substitute is the manufacturer-recommended replacement for the obsolete part.

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

A: The primary differences are product status (active versus obsolete), output drive capability (24mA versus 8mA), and supply voltage operating range (1.65V–3.6V versus 2.3V–2.7V). The substitute provides enhanced electrical performance and wider operating margins.

Q: Will the higher output current of the substitute part cause compatibility issues?

A: No. Higher output drive capability is a beneficial characteristic that provides additional design margin. The substitute will operate correctly in circuits designed for the original part.

Q: Are there any packaging or mounting differences?

A: No. Both parts use identical 56-BSSOP surface mount packaging with matching footprint dimensions and pin assignments.

Q: What compliance certifications apply to the substitute part?

A: The SN74ALVCH16601DLR maintains ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the original part.

Q: Is the substitute part available in the same packaging format?

A: The substitute is available in Tape & Reel (TR) packaging, which is standard for high-volume production and assembly operations. This format is compatible with automated pick-and-place equipment.