ST16C650AIJ44-F Equivalent & Substitute Parts

Part Overview

The ST16C650AIJ44-F is a UART interface IC with integrated 32-byte FIFO, designed for serial communication applications supporting RS232, RS422, and RS485 protocols. This component features an internal oscillator, modem control, and IrDA encoder/decoder functionality in a 44-pin PLCC surface mount package.

The ST16C650AIJ44-F is classified as obsolete. Locating equivalent substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity where original inventory is depleted or unavailable.

Substiute Parts

ST16C650AIJ44-F

MaxLinear, Inc.In Stock: 755ST16C650AIJ44-F Datasheet

Current PartRFQ

ST16C650ACJ44TR-F

MaxLinear, Inc.In Stock: 871ST16C650ACJ44TR-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST16C650AIJ44-F is determined by strict equivalence across the following critical parameters:

• UART Channel Count: 1 channel (exact match required)
• FIFO Capacity: 32 Byte (exact match required)
• Protocol Support: RS232, RS422, RS485 (all three protocols required)
• Maximum Data Rate: 3.125 Mbps (exact match required)
• Supply Voltage Range: 2.9V ~ 5.5V (exact match required)
• Package Type: 44-LCC (J-Lead) / 44-PLCC (16.59x16.59) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Feature Set: Internal Oscillator, Printer Port, Timer/Counter, Auto Flow Control, IrDA Encoder/Decoder, False Start Bit Detection, Modem Control (all features required)

The ST16C650ACJ44TR-F meets all substitution criteria. The primary difference is packaging format (Tape & Reel vs. standard packaging) and product status (Active vs. Obsolete), with no impact on electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ST16C650ACJ44TR-F is a direct electrical and mechanical equivalent to the ST16C650AIJ44-F. Selection between these parts should be based on the following factors:

Product Status: The ST16C650ACJ44TR-F carries Active product status, ensuring ongoing manufacturer support, availability, and compliance with current regulatory standards. The ST16C650AIJ44-F is Obsolete, limiting future procurement options.

Compliance: The ST16C650ACJ44TR-F is RoHS Compliant. Compliance status for the ST16C650AIJ44-F is not specified in available documentation.

Packaging Format: The ST16C650ACJ44TR-F is supplied in Tape & Reel format, standard for high-volume production environments. The ST16C650AIJ44-F packaging format is not specified. Tape & Reel packaging is compatible with automated assembly equipment.

Inventory Availability: Both parts are in stock. The ST16C650ACJ44TR-F has 854 units available; the ST16C650AIJ44-F has 723 units available.

For new designs, system updates, or long-term production support, the ST16C650ACJ44TR-F is the recommended selection due to Active product status and RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can the ST16C650ACJ44TR-F replace the ST16C650AIJ44-F in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters: UART channel count, FIFO capacity, protocol support, data rate, supply voltage, package dimensions, and feature set. Direct substitution is supported without design modification.

Q: What is the difference between the two part numbers?

A: The primary differences are product status (Active vs. Obsolete), packaging format (Tape & Reel vs. standard), and RoHS compliance status (Compliant vs. not specified). Electrical and mechanical specifications are identical.

Q: Is the 44-PLCC package compatible with existing PCB layouts designed for the ST16C650AIJ44-F?

A: Yes. Both parts use the identical 44-LCC (J-Lead) package with dimensions of 16.59x16.59 mm. PCB footprints, pin assignments, and mounting requirements are identical.

Q: Does Tape & Reel packaging affect component performance?

A: No. Tape & Reel is a packaging and delivery format for automated assembly. It does not affect electrical performance, reliability, or functional characteristics of the component itself.

Q: Are there any voltage or current rating differences between these parts?

A: No. Both parts operate within the identical supply voltage range of 2.9V ~ 5.5V and support the same maximum data rate of 3.125 Mbps.

Q: What does RoHS Compliant status mean for the ST16C650ACJ44TR-F?

A: RoHS Compliance indicates the component meets Restriction of Hazardous Substances regulations, restricting lead, cadmium, mercury, and other hazardous materials. This is relevant for applications subject to environmental and regulatory compliance requirements.