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Product Detailed Parameters
- Description：SERIAL I/O CONTROLLER, 2 CHANNEL
- Series：-
- Mfr：NXP USA Inc.
- Package：Tray
- Features：-
- Number of Channels：2, DUART
- FIFO's：16 Byte
- Protocol：-
- Data Rate (Max)：5Mbps
- Voltage - Supply：2.5V, 3.3V, 5V
- With Auto Flow Control：Yes
- With IrDA Encoder/Decoder：-
- With False Start Bit Detection：Yes
- With Modem Control：Yes
- Mounting Type：Surface Mount
- Package / Case：32-VFQFN Exposed Pad
- Supplier Device Package：32-HVQFN (5x5)
- Grade：-
- Qualification：-
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Overview
The SC16C2550BIBS,151 is a dual Universal Asynchronous Receiver and Transmitter (UART) manufactured by NXP USA Inc. It operates at supply voltages of 5 V, 3.3 V, and 2.5 V within the industrial temperature range. The device features two independent UART channels, each equipped with 16-byte transmit and receive FIFOs to reduce external CPU bandwidth requirements. It supports data rates up to 5 Mbit/s at 5 V and 3.3 V, and up to 3 Mbit/s at 2.5 V. The component is housed in an HVQFN32 package (SOT617-1) with dimensions of 5 mm x 5 mm x 0.85 mm.
Feature Summary
- Dual UART channels with 16-byte FIFOs for both transmission and reception
- Support for 5 V, 3.3 V, and 2.5 V operation with 5 V tolerant input pins
- Programmable baud rate generator supporting rates up to 5 Mbit/s
- Hardware and software compatibility with legacy 16C2450 and INS8250 standards
Applications
- High-speed modem interfaces requiring fast data processing
- Shared network environments demanding reduced interrupt servicing times
- Industrial applications operating within the specified temperature range
Procurement Notes
Verify the specific ordering suffix
Selection Notes
Select this component when a dual-channel UART solution is required with integrated FIFOs to minimize processor overhead. Ensure the design supports the necessary voltage levels (5 V, 3.3 V, or 2.5 V) and fits the HVQFN32 footprint. Consider the pin compatibility with existing 16C2450 designs if migration is planned.
Part Context
The SC16C2550B series represents an enhanced evolution of the standard 16C2450 UART, adding 16-byte FIFOs to both transmit and receive paths. This addition significantly improves throughput in multi-channel or high-baud-rate scenarios by allowing block data transfers via DMA mode. The IB variant specifically denotes the HVQFN32 package option.
Replacement Considerations
The SC16C2550B is functionally compatible with the ST16C2550 and pin-compatible with the ST16C2450 on corresponding packages. Designers migrating from older UARTs should verify software compatibility with INS8250 standards.
