Product Summary

The TL16C2550PFBR is a dual universal asynchronous receiver and transmitter (UART). It incorporates the functionality of two TL16C550D UARTs, each UART having its own register set and FIFOs. The two UARTs share only the data bus interface and clock source, otherwise they operate independently. Another name for the uart function is Asynchronous Communications Element (ACE), and these terms will be used interchangeably. The bulk of this document will describe the behavior of each ACE, with the understanding that two such devices are incorporated into the TL16C2550PFBR0. The applications of the TL16C2550PFBR include Point-of-Sale Terminals, Gaming Terminals, Portable Applications, Router Control, Cellular Data and Factory Automation.

Parametrics

TL16C2550PFBR absolute maximum ratings: (1)Supply voltage range, V CC: -0.5 V to 7 V; (2)Input voltage range at any input, VI: -0.5 V to 7 V; (3)Output voltage range, VO: -0.5 V to 7 V; (4)Operating free-air temperature, T A: -40 to 85℃; (5)Storage temperature range, T stg: -65 to 150℃; (6)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 260℃.

Features

TL16C2550PFBR features: (1)Programmable Auto-RTS and Auto-CTS; (2)In Auto-CTS Mode, CTS Controls Transmitter; (3)In Auto-RTS Mode, RCV FIFO Contents and Threshold Control RTS; (4)Serial and Modem Control Outputs Drive a RJ11 Cable Directly When Equipment Is on the Same Power Drop; (5)Capable of Running With All Existing TL16C450 Software; (6)After Reset, All Registers Are Identical to the TL16C450 Register Set; (7)Up to 24-MHz Clock Rate for up to 1.5-Mbaud Operation With V CC = 5 V; (8)Up to 20-MHz Clock Rate for up to 1.25-Mbaud Operation With V CC = 3.3 V; (9)Up to 16-MHz Clock Rate for up to 1-Mbaud Operation With V CC = 2.5 V; (10)In the TL16C450 Mode, Hold and Shift Registers Eliminate the Need for Precise Synchronization Between the CPU and Serial Data.

Diagrams

TL16C2550PFBR block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TL16C2550PFBR
TL16C2550PFBR

Texas Instruments

UART Interface IC 1.8 to 5-V Dual UART w/16-Byte FIFOs

Data Sheet

0-650: $1.94
650-1000: $1.67
1000-2000: $1.63
TL16C2550PFBRG4
TL16C2550PFBRG4

Texas Instruments

UART Interface IC 16-byte dual-FIFO UART

Data Sheet

0-650: $1.94
650-1000: $1.67
1000-2000: $1.63