CY74FCT16501ATPVC Equivalent & Substitute Parts

Part Overview

The CY74FCT16501ATPVC is a universal bus transceiver IC designed for 18-bit bidirectional data transfer applications. Manufactured by Texas Instruments in the 74FCT series, this component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The obsolete status necessitates evaluation of compatible alternatives that maintain functional equivalence while meeting current supply chain requirements.

Substiute Parts

CY74FCT16501ATPVC

Texas InstrumentsIn Stock: 1095CY74FCT16501ATPVC Datasheet

Current PartRFQ

SN74ALVCH16501DLR

Texas InstrumentsIn Stock: 832SN74ALVCH16501DLR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CY74FCT16501ATPVC is determined by the following critical parameters:

• Logic Function: Universal bus transceiver with 18-bit configuration
• Package Compatibility: 56-BSSOP surface mount package with identical physical dimensions (0.295", 7.50mm width)
• Operating Temperature Range: -40°C ~ 85°C
• Output Drive Capability: Current specifications for high and low output states
• Supply Voltage Requirements: Electrical compatibility with system power rails
• Compliance Standards: RoHS3 compliance and MSL rating

The SN74ALVCH16501DLR qualifies as a manufacturer-recommended substitute based on matching logic function, package form factor, operating temperature range, and compliance certifications. Differences in output current specifications and supply voltage range must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Selection between the CY74FCT16501ATPVC and SN74ALVCH16501DLR should be based on the following engineering criteria:

Supply Voltage Compatibility: The SN74ALVCH16501DLR operates at 1.65V ~ 3.6V, which differs from the unspecified supply voltage of the original part. Confirm that system power rails fall within the 74ALVCH series operating range before substitution.

Output Drive Current: The original part provides 32mA high and 64mA low output current, while the substitute provides 24mA for both states. Applications requiring the higher drive capability of the original part must evaluate whether the reduced output current of the substitute is acceptable for load impedance and signal integrity requirements.

Compliance and Certification: Both parts maintain ROHS3 compliance, MSL Level 1 rating, and identical operating temperature specifications, ensuring regulatory and environmental compatibility.

Obsolescence Status: Both parts are classified as obsolete. For new designs or long-term production requirements, evaluation of current-generation alternatives within the 74ALVCH or equivalent modern logic families is recommended.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALVCH16501DLR directly replace the CY74FCT16501ATPVC in existing designs?

A: Direct replacement is possible if the system supply voltage falls within 1.65V ~ 3.6V and the reduced output current specifications (24mA vs. 32mA/64mA) are compatible with the connected load impedance. Physical package compatibility is confirmed for both parts.

Q: What is the significance of the different output current ratings?

A: Output current determines the maximum load that can be driven by each output pin. The original part provides higher drive capability (32mA high, 64mA low), while the substitute provides symmetric 24mA output. Applications with high-impedance loads or long signal traces may require the higher drive current of the original part.

Q: Are there supply voltage restrictions for the substitute part?

A: Yes. The SN74ALVCH16501DLR requires supply voltage between 1.65V and 3.6V. Confirm that your system power rails operate within this range. The original part's supply voltage specification was not provided in the available data.

Q: Do both parts use the same package?

A: Yes. Both the CY74FCT16501ATPVC and SN74ALVCH16501DLR use the 56-BSSOP package with identical physical dimensions (0.295", 7.50mm width), ensuring PCB layout compatibility.

Q: What is the moisture sensitivity level, and why does it matter?

A: Both parts have MSL Level 1 (Unlimited), meaning they have unlimited shelf life and do not require special moisture control during storage or handling. This simplifies supply chain management and reduces component preparation requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the CY74FCT16501ATPVC and SN74ALVCH16501DLR are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.