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Product Detailed Parameters
- Description：IC UART DUAL W/FIFO 48-LQFP
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- 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：48-LQFP
- Supplier Device Package：48-LQFP (7x7)
- Grade：-
- Qualification：-
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Overview
The SC16C2550BIB48,128 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 with an industrial temperature range. The device features independent transmit and receive channels, each equipped with 16-byte FIFOs to reduce 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 a 48-lead LQFP package.
Feature Summary
- Dual UART channels with 16-byte transmit and receive FIFOs
- Support for 5 V, 3.3 V, and 2.5 V operation
- Programmable baud rate generator supporting up to 5 Mbit/s
- Internal loopback capability for on-board diagnostics
Applications
- Portable appliances requiring serial communication
- Telecommunication network routers
- Ethernet network routers
- Cellular data devices
- Factory automation and process controls
Procurement Notes
Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and revision level. Ensure compatibility with existing system voltage levels and interface requirements before procurement. Confirm availability through authorized distributors as standard lead times may vary based on production schedules.
Selection Notes
Select this component when a dual-channel UART solution with integrated FIFOs is required for high-speed serial communication. Verify that the LQFP48 package fits the PCB layout constraints. Ensure the host system can support the necessary clock frequencies for the desired baud rates. Check pin compatibility if replacing legacy components like the ST16C2550 or TL16C2550.
Part Context
The SC16C2550B series represents an enhanced version of earlier UART designs, offering improved performance through integrated FIFOs. It maintains software compatibility with older standards while providing additional features such as DMA mode support and flexible interrupt handling. The IB48 designation specifically refers to the LQFP48 plastic low profile quad flat package variant.
Replacement Considerations
The SC16C2550B is pin compatible with the ST16C2550. It is also functionally equivalent to the 16C2450 upon power-up. For direct replacements, consider the SC16C2550BIA44 (PLCC44), SC16C2550BIN40 (DIP40), or SC16C2550BIBS (HVQFN32) depending on the required package form factor.
