SC16C654BIBM,128 Equivalent & Substitute Parts

Part Overview

The SC16C654BIBM,128 is a quad UART interface IC manufactured by NXP USA Inc., designed for serial communication applications requiring four independent UART channels with 64-byte FIFO buffers. This component operates across multiple supply voltages (2.5V, 3.3V, 5V) and integrates advanced features including auto flow control, IrDA encoder/decoder, false start bit detection, and modem control capabilities. The device is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SC16C654BIBM,128

NXP USA Inc.In Stock: 1017SC16C654BIBM,128 Datasheet

Current PartRFQ

XR16V654DIV-F

MaxLinear, Inc.In Stock: 2175XR16V654DIV-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC16C654BIBM,128 is determined by the following critical parameters:

• Channel Configuration: Quad UART (4 independent channels) requirement
• FIFO Buffer Capacity: 64-byte FIFO per channel
• Package Footprint: 64-LQFP form factor compatibility
• Functional Features: Auto flow control, IrDA encoder/decoder, false start bit detection, and modem control
• Supply Voltage Compatibility: Operating range must support the system's power supply specifications
• Mounting Technology: Surface mount capability for PCB integration

The XR16V654DIV-F from MaxLinear, Inc. qualifies as a substitute based on matching these core parameters while offering enhanced performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The XR16V654DIV-F represents a functionally equivalent substitute for the obsolete SC16C654BIBM,128. Both devices maintain identical channel count, FIFO capacity, and core feature sets. The MaxLinear component offers superior performance with a maximum data rate of 16 Mbps compared to 5 Mbps, and maintains active product status ensuring long-term availability and supply chain continuity.

Key considerations for selection:

• Package Footprint Difference: The XR16V654DIV-F uses a 64-LQFP (10x10) package versus the SC16C654BIBM,128's 64-LQFP (7x7). PCB layout modifications are required to accommodate the larger footprint.
• Supply Voltage Range: The MaxLinear device operates within 2.25V to 3.6V, which is compatible with 3.3V systems but requires verification for 5V applications.
• Compliance Status: Both components meet RoHS requirements. The MaxLinear part carries standard RoHS compliance while the NXP part is ROHS3 compliant.
• Moisture Sensitivity: The XR16V654DIV-F has MSL-3 rating (168 hours) versus MSL-1 (unlimited) for the original part, affecting storage and handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the XR16V654DIV-F directly replace the SC16C654BIBM,128 without PCB modifications?

A: No. While functionally equivalent, the XR16V654DIV-F uses a larger 64-LQFP (10x10) package compared to the SC16C654BIBM,128's 64-LQFP (7x7) footprint. PCB layout redesign is necessary to accommodate the different pin spacing and package dimensions.

Q: Are the supply voltage ranges compatible between these two parts?

A: Partial compatibility exists. The XR16V654DIV-F operates within 2.25V to 3.6V, making it suitable for 3.3V systems. For 5V applications, the original SC16C654BIBM,128 specification of 5V support must be verified against your system requirements, as the MaxLinear substitute does not explicitly support 5V operation.

Q: What is the significance of the different MSL ratings?

A: The SC16C654BIBM,128 has MSL-1 (unlimited moisture sensitivity level), while the XR16V654DIV-F has MSL-3 (168 hours). This affects storage conditions and handling procedures. MSL-3 components require controlled humidity storage and have a limited shelf life after moisture exposure, requiring baking before reflow soldering.

Q: Do both parts support the same communication protocols and features?

A: Yes. Both the SC16C654BIBM,128 and XR16V654DIV-F include identical feature sets: auto flow control, IrDA encoder/decoder, false start bit detection, and modem control. The XR16V654DIV-F additionally includes an internal oscillator and timer/counter functionality.

Q: What is the primary advantage of selecting the XR16V654DIV-F?

A: The MaxLinear XR16V654DIV-F offers active product status with ongoing manufacturer support and supply availability, compared to the obsolete SC16C654BIBM,128. Additionally, the 16 Mbps maximum data rate provides superior performance headroom for high-speed serial communication applications.