TL16C452FN Equivalent & Substitute Parts

Part Overview

The TL16C452FN is a dual-channel UART (Universal Asynchronous Receiver/Transmitter) interface IC manufactured by Texas Instruments, housed in a 68-PLCC package. This component functions as an asynchronous communication element with integrated modem control capabilities, designed for printer port and legacy serial communication applications. The TL16C452FN is classified as Last Time Buy, indicating end-of-life status and limited availability. Identifying qualified substitute parts is essential for ongoing system support, design updates, and inventory management when original stock becomes unavailable.

Substiute Parts

TL16C452FN

Texas InstrumentsIn Stock: 1409TL16C452FN Datasheet

Current PartRFQ

TL16C752DPFBR

Texas InstrumentsIn Stock: 7010TL16C752DPFBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL16C452FN is determined by the following critical parameters:

Functional Requirements:

• Dual-channel UART architecture (2 DUART channels minimum)
• Modem control capability
• Surface mount technology compatibility

Electrical Compatibility:

• Supply voltage range must accommodate or exceed the original 4.75V ~ 5.25V specification
• Interface category classification

Compliance & Certification:

• RoHS3 compliance maintained
• REACH unaffected status
• ECCN EAR99 classification

Package Considerations:

• Physical footprint and pin count differences require PCB redesign evaluation
• Supplier device package specifications must be verified for mechanical fit

The TL16C752DPFBR qualifies as a manufacturer-recommended substitute based on matching functional architecture (dual DUART channels with modem control), enhanced electrical specifications (wider supply voltage range: 1.62V ~ 5.5V), and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution Consideration:

The TL16C752DPFBR is the manufacturer-recommended substitute for the TL16C452FN. Selection of this alternative is supported by:

• Active product status ensuring long-term availability and supply chain stability
• Dual-channel DUART architecture with modem control matching functional requirements
• Enhanced electrical specifications (1.62V ~ 5.5V supply range) providing broader operational flexibility
• Maintained RoHS3 compliance and REACH unaffected status
• Equivalent ECCN EAR99 classification for export compliance

Critical Design Consideration:

Package transition from 68-PLCC to 48-TQFP requires PCB layout modification. The TL16C752DPFBR operates in a smaller footprint (48-TQFP 7x7mm versus 68-PLCC 24.23x24.23mm) with reduced pin count. Schematic review and PCB redesign are mandatory to ensure proper signal routing and pin assignment alignment.

Frequently Asked Questions (FAQ)

Q: Can the TL16C752DPFBR directly replace the TL16C452FN without PCB modification?

A: No. The TL16C752DPFBR uses a 48-TQFP package versus the 68-PLCC package of the TL16C452FN. Different pin counts and physical dimensions require PCB redesign. Pin-to-pin compatibility cannot be assumed.

Q: What are the key functional similarities between these parts?

A: Both devices are dual-channel UART interface ICs with modem control capability, manufactured by Texas Instruments, and classified as Interface category components. Both maintain RoHS3 compliance and REACH unaffected status.

Q: Why is the TL16C752DPFBR recommended over other potential alternatives?

A: The TL16C752DPFBR is the manufacturer-recommended substitute, carries Active product status ensuring availability, and provides enhanced electrical specifications including a wider supply voltage range (1.62V ~ 5.5V) compared to the original 4.75V ~ 5.25V specification.

Q: What supply voltage range does the TL16C752DPFBR support?

A: The TL16C752DPFBR operates across 1.62V ~ 5.5V, which encompasses and exceeds the original TL16C452FN range of 4.75V ~ 5.25V.

Q: Are there compliance or certification differences between these parts?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Regulatory and compliance requirements are equivalent.

Q: What is the MSL (Moisture Sensitivity Level) difference?

A: The TL16C452FN carries MSL 3 (168 hours), while the TL16C752DPFBR carries MSL 2 (1 year). The TL16C752DPFBR has lower moisture sensitivity, requiring less stringent handling during storage and assembly.