Datasheet > XR16L2450_05

XR16L2450_05

更新时间： 2024-09-17 04:23:31

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
30页	569K
描述
2.25V TO 5.5V DUART

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中文翻译

获取价格

数据手册

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XR16L2450_05 数据手册

XR16L2450

2.25V TO 5.5V DUART

REV. 1.1.1

MAY 2005

FEATURES

GENERAL DESCRIPTION

The XR16L2450 (L2450) is a dual universal asyn-

chronous receiver and transmitter (UART). The

XR16L2450 is an improved version of the

ST16C2450 with lower operating voltage and 5 volt

tolerant inputs. The L2450 provides enhanced UART

functions, a modem control interface and data rates

up to 1.5 Mbps. Onboard status registers provide the

user with error indications and operational status. In-

dependent programmable baud rate generators are

provided to select transmit and receive clock rates up

to 1.5 Mbps. An internal loopback capability allows

onboard diagnostics. The L2450 is available in a 44-

pin PLCC and 48-pin TQFP packages. The L2450 is

fabricated in an advanced CMOS process capable of

operating from 2.25 volt to 5.5 volt power supply with

5 volt tolerant inputs.

• 2.25 to 5.5 Volt Operation

• 5 Volt Tolerant Inputs

• Pin-to-pin compatible to Exar’s ST16C2450,

ST16C2550,

XR16C2850

XR16L2550,

XR16L2750

and

• Pin-to-pin compatible to TI’s TL16C752B on the 48-

TQFP package

• 2 independent UART channels

■ Up to 1.5 Mbps data rate with a 24 MHz crystal

oscillator or external clock frequency

■ 1 byte Transmit FIFO

■ 1 byte Receive FIFO with error tags

■ Status report registers

■ Modem control signals (CTS#, RTS#, DSR#,

DTR#, RI#, CD#)

APPLICATIONS

■ Programmable character lengths (5, 6, 7, 8)

• Portable Appliances

with even, odd, or no parity

• Telecommunication Network Routers

• Ethernet Network Routers

• Cellular Data Devices

• Crystal oscillator or external clock input

• TTL compatible inputs, outputs

• Industrial temperature ranges

• Factory Automation and Process Controls

• 48-TQFP and 44-PLCC packages

FIGURE 1. XR16L2450 BLOCK DIAGRAM

2.25 to 5.5 Volt VCC

*5V Tolerant inputs

A2:A0

D7:D0

UART Channel A

TXA

THR

IOR#

IOW#

UART

Regs

RHR

RXA

CSA#

CSB#

RTSA#, CTSA#,

DTRA#, DSRA#,

CDA#, RIA#, OP2A#

Modem I/Os

8-bit Data

INTA

INTB

BRG

Bus

Interface

TXB

RXB

UART Channel B

RTSB#, CTSB#,

DTRB#, DSRB#,

CDB#, RIB#, OP2B#

(same as Channel A)

Reset

XTAL1

XTAL2

Crystal Osc/Buffer

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

12 3 4 5 6 7...30

中文翻译

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与XR16L2450_05相关器件

型号	品牌	获取价格	描述	数据表
XR16L2450IJ	EXAR	获取价格	2.25V TO 5.5V DUART
XR16L2450IJ-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 0.1875MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44
XR16L2450IM	EXAR	获取价格	2.25V TO 5.5V DUART
XR16L2450IM-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 0.1875MBps, CMOS, PQFP48, 7 X 7 MM, 1 MM HEIGHT, GREE
XR16L2550	EXAR	获取价格	LOW VOLTAGE DUART WITH 16-BYTE FIFO
XR16L2550_07	EXAR	获取价格	LOW VOLTAGE DUART WITH 16-BYTE FIFO
XR16L2550IJ	EXAR	获取价格	LOW VOLTAGE DUART WITH 16-BYTE FIFO
XR16L2550IJ-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 0.390625MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44
XR16L2550IJTR-F	EXAR	获取价格	Serial I/O Controller, CMOS, PQCC44
XR16L2550IL	EXAR	获取价格	LOW VOLTAGE DUART WITH 16-BYTE FIFO

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