PC16552DV Equivalent & Substitute Parts

Part Overview

The PC16552DV is a dual-channel UART interface IC manufactured by Texas Instruments, featuring 16-byte FIFOs and modem control capabilities. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production support. The PC16552DV operates at 5V supply voltage with a maximum data rate of 1.5 Mbps and is packaged in a 44-PLCC surface-mount configuration.

Substiute Parts

PC16552DV

Texas InstrumentsIn Stock: 2344PC16552DV Datasheet

Current PartRFQ

TL16C552AFN

Texas InstrumentsIn Stock: 1821TL16C552AFN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PC16552DV is determined by the following critical parameters:

• Dual-channel UART architecture (DUART): Substitute parts must provide two independent serial communication channels
• 16-byte FIFO buffers: Functional equivalence requires identical FIFO depth per channel
• Modem control and false start bit detection: These control features must be present in substitute parts
• Surface-mount packaging: Physical form factor compatibility with 44-pin or compatible pin-count packages
• Supply voltage compatibility: Operating voltage range must accommodate 5V systems or provide regulated supply options
• Data rate capability: Maximum baud rate must meet or exceed 1.5 Mbps for functional compatibility

The TL16C552AFN is identified as a manufacturer-recommended substitute based on matching functional architecture, FIFO configuration, and control features, despite differences in package size and electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

PC16552DV: This part is obsolete and RoHS non-compliant. Selection is limited to legacy system maintenance or repair applications where original component specifications are mandatory. New designs should not incorporate this part number.

TL16C552AFN: This part is designated as Last Time Buy and is ROHS3 compliant, making it suitable for new designs and systems requiring regulatory compliance. The TL16C552AFN provides equivalent functional architecture with improved environmental compliance. The 68-pin package requires PCB layout modification compared to the 44-pin PC16552DV. The supply voltage range of 4.75V to 5.25V provides greater tolerance than the fixed 5V specification of the PC16552DV. The maximum data rate of 1 Mbps is lower than the PC16552DV specification; applications requiring data rates above 1 Mbps must be evaluated for compatibility.

Frequently Asked Questions (FAQ)

Q: Can the TL16C552AFN directly replace the PC16552DV without PCB modification?

A: No. The TL16C552AFN uses a 68-pin LCC package compared to the 44-pin LCC package of the PC16552DV. PCB layout changes are required, including footprint redesign and potential routing modifications. Pin assignments must be verified against both datasheets before implementation.

Q: What is the impact of the 1 Mbps maximum data rate on the TL16C552AFN compared to the 1.5 Mbps of the PC16552DV?

A: The TL16C552AFN supports a maximum data rate of 1 Mbps. Applications operating at baud rates above 1 Mbps will not function with this substitute. System requirements must be evaluated to confirm compatibility with this lower specification.

Q: Are there compliance differences between these parts?

A: Yes. The PC16552DV is RoHS non-compliant, while the TL16C552AFN is ROHS3 compliant. The TL16C552AFN is suitable for applications requiring environmental and regulatory compliance. The PC16552DV is restricted to legacy applications where compliance exemptions apply.

Q: What is the significance of the supply voltage range difference?

A: The PC16552DV requires a fixed 5V supply, while the TL16C552AFN accepts 4.75V to 5.25V. The TL16C552AFN provides greater tolerance to supply voltage variations, improving system robustness in applications with variable power delivery.

Q: Why is the TL16C552AFN designated as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer will discontinue production after a specified date. This part should be used for new designs only if long-term availability is not required. For applications requiring extended production support, alternative UART solutions should be evaluated.