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TL16C450FN

Name: TL16C450FN
Rating: 4.7 (12 reviews)

IC ASYNC COMM ELEMENT 44-PLCC

製造商
製造商。部分 #TL16C450FN
包 44-LCC (J-Lead)
資料表 TL16C450FN DataSheet
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規格

Supplier	Texas Instruments
Package	Tube
ProductStatus	Active
NumberofChannels	1, UART
Voltage-Supply	4.75V ~ 5.25V
WithFalseStartBitDetection	Yes
WithModemControl	Yes
MountingType	Surface Mount
Package/Case	44-LCC (J-Lead)

概述

Description

TL16C450FN is a Texas Instruments UART (universal asynchronous receiver/transmitter) in the TL16C450 family. It provides a single hardware serial port and converts between a microprocessor’s parallel data bus and asynchronous serial lines (RS-232 or TTL levels via external drivers).
Key points:
- 16550-compatible register set: RBR/THR, IER, IIR/FCR, LCR, MCR, LSR, MSR, SCR.
- Programmable baud rate generator; supports 5–8 data bits, 1–2 stop bits, and parity (None/Even/Odd).
- Interrupts for data received, transmitter holding register empty, and line/status events.
- Optional FIFO (up to 16 bytes) to improve throughput; exact FIFO size varies by variant.
- Used to add a hardware serial port to microcontrollers and embedded systems; connects to a host CPU via an 8/16-bit data bus and IRQs; requires external clock and line drivers for RS-232/RS-485.
For specifics (pinout, timing, voltage, package FN) refer to the TL16C450FN datasheet.

Features

TL16C450FN is a single-channel UART (RS-232 style) in the 16C50x family. Key features:
- 1 UART with register set compatible to 8250/16450/16550 family
- Programmable baud rate via divisor latch (DLL/DLH) for standard rates
- Data formats: 5–8 data bits, 1 or 2 stop bits, parity (none/odd/even/mark/space)
- Break generation and error detection (overrun, framing, parity errors)
- Modem control and handshake lines (RTS/CTS/DTR/DSR/RI/CD)
- Interrupt-driven: supports receive data ready, transmitter holding register empty, line status, and modem status; configurable via IER/IIR
- Registers: RBR/THR, IER, LCR, MCR, LSR, MSR, SCR (divisor latch accessible when DLAB=1)
- Diagnostic features: loopback test mode and software reset
- Package: commonly 28‑pin (DIP/SOIC) in TI parts
Note: exact FIFO behavior varies by variant; TL16C450FN generally provides basic buffering similar to classic 16550-era UARTs.

Package

28‑pin DIP (PDIP) package.

Pinout

- Pin count: 28 pins (28-pin package)
- Function: Single-channel UART (universal asynchronous receiver/transmitter) compatible with the 16C550/16550 family, providing asynchronous serial transmit/receive with baud-rate generator and standard control/status registers for RS-232/TTL interfacing.

Manufacturer

Manufacturer: Toshiba (Toshiba Corporation).
Company type: A Japanese multinational conglomerate that designs and manufactures electronics, semiconductors, and electrical equipment.

Application

TL16C450FN is a UART/serial interface used to implement RS-232/RS-485 communication in embedded systems. Typical applications: microcontroller-based serial I/O, PC/peripheral interfaces, data acquisition and instrumentation, industrial automation and PLCs, networking equipment and modems, and point-of-sale terminals.

Equivalent

Possible cross-references for TL16C450FN (UART):
- Intel 8250/8250A UART
- National Semiconductor/TI 16C450/16C550/16550 UART family
- TI TL16C550 (and related variants)
In short: 8250 family and the 16C450/16C550/16550 UART series are the main equivalents.