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TL16C550 from TI,Texas Instruments

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TL16C550

Manufacturer: TI

ASYNCHRONOUS COMMUNICATIONS ELEMENT

Partnumber Manufacturer Quantity Availability
TL16C550 TI 1000 In Stock

Description and Introduction

ASYNCHRONOUS COMMUNICATIONS ELEMENT The TL16C550 is a UART (Universal Asynchronous Receiver/Transmitter) manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Supply Voltage:** 5V ±10%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Data Rate:** Up to 1 Mbps  
- **FIFO Depth:** 16 bytes (for both transmit and receive)  
- **Package Options:** 40-pin PDIP, 44-pin PLCC, 48-pin LQFP  

### **Descriptions:**
- The TL16C550 is an enhanced UART with 16-byte FIFOs to reduce CPU overhead.  
- It is compatible with the industry-standard 16C450 and 16C550 UARTs.  
- Supports asynchronous serial communication with programmable baud rates.  
- Includes modem control functions (RTS, CTS, DSR, DTR, RI, DCD).  

### **Features:**
- **16-byte FIFOs** for transmit and receive to minimize CPU interrupts.  
- **Programmable baud rate generator** with a prescaler for flexible clocking.  
- **Modem control signals** (RTS, CTS, DSR, DTR, RI, DCD).  
- **Autoflow control** (XON/XOFF or RTS/CTS).  
- **Interrupt prioritization** and identification.  
- **Loopback mode** for diagnostics.  
- **Software-selectable baud rates** (up to 1 Mbps).  
- **Compatible with Intel and Motorola microprocessors.**  

This UART is commonly used in serial communication applications such as industrial control, networking, and embedded systems.

Application Scenarios & Design Considerations

ASYNCHRONOUS COMMUNICATIONS ELEMENT

Alternative Part Number

  • ST16C550 --: Pin-compatible UART with 16-byte FIFO, direct functional equivalent to the TL16C550 and widely used as a drop-in replacement.
  • XR16C550 --: Industry-standard 16C550-compatible UART with equivalent register set and FIFO depth, well established as an alternative to TI's device.
  • PC16550D --: Classic 16550 UART from the same vendor with compatible register interface and FIFO, suitable when full 16C550 feature parity is not strictly required.

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