TL16C554AFNG4 Equivalent & Substitute Parts

Part Overview

The TL16C554AFNG4 is a quad UART (Universal Asynchronous Receiver/Transmitter) interface IC manufactured by Texas Instruments, designed for asynchronous communication applications. This component features 4 channels with 16-byte FIFOs, supporting data rates up to 1 Mbps across a 3V to 5.25V supply voltage range. The part is packaged in a 68-pin PLCC (J-Lead) surface mount configuration.

The TL16C554AFNG4 has been discontinued at DiGi Electronics. Equivalent substitute parts remain available in active production status, making component sourcing feasible for ongoing designs and legacy system maintenance.

Substiute Parts

TL16C554AFNG4

Texas InstrumentsIn Stock: 2317TL16C554AFNG4 Datasheet

Current PartRFQ

TL16C554AFN

Texas InstrumentsIn Stock: 1785TL16C554AFN Datasheet

MFR RecommendedRFQ

TL16C554AIFN

Texas InstrumentsIn Stock: 1257TL16C554AIFN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TL16C554AFNG4 are determined by strict equivalence across the following critical parameters:

• Number of Channels: 4 QUART channels
• FIFO Depth: 16 Byte
• Data Rate (Max): 1 Mbps
• Voltage Supply Range: 3V ~ 5.25V
• Auto Flow Control: Yes
• False Start Bit Detection: Yes
• Modem Control: Yes
• Package / Case: 68-LCC (J-Lead)
• Supplier Device Package: 68-PLCC (24.23x24.23)
• Base Product Number: TL16C554

All substitute parts listed maintain identical electrical and mechanical specifications. Differences exist only in packaging format (Tube vs. other configurations) and product status (Active vs. Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The TL16C554AFNG4 is discontinued; however, direct functional equivalents remain in active production. Selection between TL16C554AFN and TL16C554AIFN should be based on the following criteria:

TL16C554AFN is designated as the MFR Recommended substitute. This part maintains full parametric equivalence and is available in Tube packaging. Current inventory status supports immediate procurement for production applications.

TL16C554AIFN is classified as a Parametric Equivalent. This part satisfies all electrical and mechanical requirements and is available in Tube packaging. Current inventory supports component sourcing for both new designs and legacy system replacements.

Both substitute parts carry identical RoHS3 compliance, REACH Unaffected status, and MSL ratings. Pin configuration, electrical performance, and thermal characteristics remain unchanged across all three part numbers. PCB layout and design files require no modification for substitution.

Frequently Asked Questions (FAQ)

Q: Can TL16C554AFN or TL16C554AIFN be used as direct replacements for TL16C554AFNG4?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, channel count, FIFO depth, data rate, supply voltage range, and 68-PLCC package dimensions. No circuit modifications are required.

Q: What is the difference between TL16C554AFN and TL16C554AIFN?

A: Both parts are functionally identical across all electrical and mechanical parameters. The difference lies in manufacturing lot designation and packaging format. Both are available in Tube packaging and maintain active production status.

Q: Are there any compatibility concerns with PCB assembly?

A: No. All three parts use the identical 68-PLCC (24.23x24.23) package footprint. Existing PCB designs, solder profiles, and assembly processes require no modification.

Q: What compliance certifications apply to the substitute parts?

A: Both TL16C554AFN and TL16C554AIFN carry ROHS3 compliance and REACH Unaffected status, matching the original TL16C554AFNG4. Moisture Sensitivity Level (MSL) rating is 3 (168 Hours) for all parts.

Q: Is inventory availability a factor in part selection?

A: Current inventory for TL16C554AFN is 1745 pieces and for TL16C554AIFN is 1157 pieces. Both support production volume requirements. Procurement lead times and supplier availability should be evaluated based on project timeline.

Q: Can these parts be used in new designs?

A: Yes. Both TL16C554AFN and TL16C554AIFN are in active production status and are suitable for new product development, legacy system maintenance, and design refresh applications.