SC16C554IB80 Equivalent & Substitute Parts

Part Overview

The SC16C554IB80 is a quad UART interface IC manufactured by NXP USA Inc., designed for asynchronous serial communication applications. This device integrates four independent UART channels with 16-byte FIFOs, supporting data rates up to 5 Mbps and multiple supply voltages (2.5V, 3.3V, 5V). The part features auto flow control, IrDA encoder/decoder, false start bit detection, and modem control capabilities in an 80-LQFP surface mount package.

The SC16C554IB80 is classified as obsolete. Equivalent substitute parts are available from Texas Instruments with active product status, making them suitable alternatives for new designs and production continuity.

Substiute Parts

SC16C554IB80,528

NXP USA Inc.In Stock: 994SC16C554IB80,528 Datasheet

Current PartRFQ

TL16C554APN

Texas InstrumentsIn Stock: 2262TL16C554APN Datasheet

MFR RecommendedRFQ

TL16C554APNR

Texas InstrumentsIn Stock: 3771TL16C554APNR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SC16C554IB80 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Core Compatibility Criteria:

• Number of UART channels: 4 (QUART)
• FIFO depth: 16 Byte
• Package type: 80-LQFP (12x12)
• Mounting type: Surface Mount
• Modem control capability: Yes
• False start bit detection: Yes
• Auto flow control: Yes

The Texas Instruments TL16C554APN and TL16C554APNR meet these core requirements. Both parts maintain identical channel count, FIFO depth, package footprint, and essential control features. The primary differences are packaging format (Tray vs. Cut Tape & Digi-Reel) and maximum data rate specification (1 Mbps vs. 5 Mbps for the original part). Both substitute parts are RoHS3 compliant with MSL rating 3 and active product status.

Parameter Comparison

Engineering Selection Recommendations

Both TL16C554APN and TL16C554APNR are suitable substitutes for the obsolete SC16C554IB80 based on functional equivalence and compliance certifications. Selection between the two Texas Instruments options depends on procurement and assembly requirements:

TL16C554APN is supplied in Tray packaging, suitable for automated pick-and-place assembly operations.

TL16C554APNR is supplied in Cut Tape (CT) & Digi-Reel® format, appropriate for high-volume production runs and tape-and-reel handling systems.

Both parts maintain RoHS3 compliance, REACH unaffected status, and EAR99 export classification consistent with the original part. The maximum data rate specification of 1 Mbps for the Texas Instruments substitutes is lower than the 5 Mbps rating of the NXP original; applications requiring data rates above 1 Mbps should be evaluated against actual system requirements.

Frequently Asked Questions (FAQ)

Q: Are the TL16C554APN and TL16C554APNR pin-compatible with the SC16C554IB80?

A: Yes. All three parts use the 80-LQFP (12x12) package with identical pin assignments for the four UART channels, control signals, and power/ground connections. PCB layout and footprint remain unchanged.

Q: What is the difference between TL16C554APN and TL16C554APNR?

A: The functional specifications are identical. The difference is packaging format: TL16C554APN is supplied in Tray format for manual or semi-automated assembly, while TL16C554APNR is supplied in Cut Tape & Digi-Reel® format for high-speed automated assembly lines.

Q: Does the lower maximum data rate of the Texas Instruments parts affect compatibility?

A: The TL16C554APN and TL16C554APNR specify a maximum data rate of 1 Mbps, compared to 5 Mbps for the SC16C554IB80. Compatibility depends on your application's actual data rate requirements. If your system operates at or below 1 Mbps, the substitutes are fully compatible. Applications requiring higher data rates should be evaluated separately.

Q: Are the substitute parts RoHS and REACH compliant?

A: Yes. Both TL16C554APN and TL16C554APNR are RoHS3 compliant and REACH unaffected, matching the compliance status of the original SC16C554IB80.

Q: What is the MSL rating, and does it differ between parts?

A: All three parts carry MSL rating 3 (168 Hours), indicating identical moisture sensitivity and storage requirements. No difference in handling or storage procedures is required when switching between parts.

Q: Can I use these substitutes in new designs?

A: Yes. The Texas Instruments TL16C554APN and TL16C554APNR are active products with ongoing manufacturer support, making them suitable for new designs. The original SC16C554IB80 is obsolete and should not be specified for new applications.