SC16C652IB48,128 Equivalent & Substitute Parts

Part Overview

The SC16C652IB48,128 is a dual UART (DUART) interface IC manufactured by NXP USA Inc., featuring 32-byte FIFOs, dual channels, and support for multiple supply voltages (2.5V, 3.3V, 5V). The device is packaged in a 48-LQFP form factor and includes modem control and false start bit detection capabilities. This part is currently obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Substiute Parts

SC16C652IB48,128

NXP USA Inc.In Stock: 1097SC16C652IB48,128 Datasheet

Current PartRFQ

XR16L2750IM-F

MaxLinear, Inc.In Stock: 9969XR16L2750IM-F Datasheet

MFR RecommendedRFQ

XR16L2750IMTR-F

MaxLinear, Inc.In Stock: 846XR16L2750IMTR-F Datasheet

MFR RecommendedRFQ

XR16M752IM48-F

MaxLinear, Inc.In Stock: 4194XR16M752IM48-F Datasheet

MFR RecommendedRFQ

XR16M752IM48TR-F

MaxLinear, Inc.In Stock: 4886XR16M752IM48TR-F Datasheet

MFR RecommendedRFQ

XR68M752IM48-F

MaxLinear, Inc.In Stock: 1854XR68M752IM48-F Datasheet

MFR RecommendedRFQ

XR68M752IM48TR-F

MaxLinear, Inc.In Stock: 2717XR68M752IM48TR-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SC16C652IB48,128 is determined by the following critical parameters:

• Dual Channel UART Architecture: All substitute parts maintain 2-channel DUART configuration
• Package Compatibility: 48-pin surface mount packages (48-LQFP or 48-TQFP) with 7x7mm footprint
• Core Functional Features: Auto flow control, modem control, and false start bit detection
• Supply Voltage Range: Support for the original supply voltages or compatible ranges
• FIFO Capacity: Minimum 32-byte FIFO (substitutes offer 64-byte, which is backward compatible)
• Data Rate: Minimum 5 Mbps capability (all substitutes exceed this requirement)

The substitute parts are grouped into two categories based on protocol support and voltage specifications:

Category A (RS232/RS485 Support): XR16L2750IM-F, XR16L2750IMTR-F

• Voltage range: 2.25V ~ 5.5V (covers original 2.5V, 3.3V, 5V)
• Data rate: 6.25 Mbps
• FIFO: 64 Byte

Category B (RS232/RS422/RS485 Support): XR16M752IM48-F, XR16M752IM48TR-F, XR68M752IM48-F, XR68M752IM48TR-F

• Voltage range: 1.62V ~ 3.63V (covers 3.3V and 5V with external regulation)
• Data rate: 16 Mbps
• FIFO: 64 Byte
• Enhanced protocol support

Parameter Comparison

Engineering Selection Recommendations

For 5V Single Supply Systems: Select XR16L2750IM-F or XR16L2750IMTR-F. These parts support the full 2.25V ~ 5.5V range, directly accommodating the original 5V supply requirement. Both are active products with ROHS3 compliance. Choose the Tray packaging (IM-F) for prototype and low-volume applications, or Tape & Reel (IMTR-F) for production quantities.

For 3.3V Systems with Extended Protocol Requirements: Select XR16M752IM48-F or XR16M752IM48TR-F. These parts operate within the 1.62V ~ 3.63V range and provide RS232, RS422, and RS485 protocol support. The higher 16 Mbps data rate and 64-byte FIFO offer performance headroom. Use IM48-F for development or XR16M752IM48TR-F for volume production.

For Mixed Voltage or High-Performance Applications: Select XR68M752IM48-F or XR68M752IM48TR-F. These represent the highest performance option with 16 Mbps data rate, full protocol support (RS232/RS422/RS485), and 64-byte FIFO. Suitable for systems requiring maximum throughput and protocol flexibility. Packaging selection follows the same volume-based criteria.

All substitute parts maintain active product status, ensuring long-term availability and support. RoHS compliance is maintained across all options. The 48-TQFP package is mechanically compatible with the original 48-LQFP footprint for PCB layout purposes.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SC16C652IB48,128 with any of these substitute parts?

A: Yes, all listed substitute parts are functionally compatible. The 48-pin TQFP package footprint is compatible with the original 48-LQFP layout. Verify your supply voltage requirements: XR16L2750 series supports 2.25V ~ 5.5V (direct 5V compatibility), while XR16M752 and XR68M752 series require 1.62V ~ 3.63V (suitable for 3.3V systems).

Q: What is the difference between XR16L2750 and XR16M752/XR68M752 series?

A: XR16L2750 supports RS232 and RS485 protocols with 6.25 Mbps maximum data rate. XR16M752 and XR68M752 support RS232, RS422, and RS485 protocols with 16 Mbps maximum data rate. Both XR16M752 and XR68M752 operate at lower voltage ranges (1.62V ~ 3.63V) compared to XR16L2750 (2.25V ~ 5.5V).

Q: What is the difference between Tray and Tape & Reel packaging?

A: Tray packaging (IM-F, IM48-F) is suitable for prototype development, small-batch assembly, and manual handling. Tape & Reel packaging (IMTR-F, IM48TR-F) is designed for automated pick-and-place assembly and high-volume production. Both contain identical die and functionality; packaging selection depends on manufacturing process requirements.

Q: Are the 64-byte FIFOs backward compatible with the original 32-byte FIFO?

A: Yes. The larger FIFO in substitute parts is fully backward compatible. Existing firmware and driver code designed for 32-byte FIFOs will operate correctly with 64-byte FIFOs. The additional buffer capacity provides improved performance headroom without requiring design changes.

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

A: The original SC16C652IB48,128 has MSL 1 (unlimited shelf life). Substitute parts have MSL 3 (168-hour limit after moisture exposure). For production environments, follow standard MSL 3 handling procedures: store in dry conditions, use within 168 hours of bag opening, or bake components before reflow soldering per IPC standards.

Q: Which substitute should I choose for a new design?

A: For new designs, select based on your system voltage and protocol requirements. If your system uses 5V single supply, XR16L2750 series is optimal. For 3.3V systems or those requiring RS422 support, XR16M752 or XR68M752 series are recommended. All are active products with long-term availability.