參數(shù)資料
型號(hào)： XR19L400IL40-F
廠(chǎng)商： Exar Corporation
文件頁(yè)數(shù)： 1/46頁(yè)
文件大?。?/td> 0K
描述： IC UART/TXRX RS485 40QFN
標(biāo)準(zhǔn)包裝： 490
特點(diǎn)： *
通道數(shù)： 1，UART
FIFO's： 64 字節(jié)
規(guī)程： RS485
電源電壓： 3.3V，5V
帶自動(dòng)流量控制功能： 是
帶故障啟動(dòng)位檢測(cè)功能： 是
帶調(diào)制解調(diào)器控制功能： 是
帶CMOS： 是
安裝類(lèi)型： 表面貼裝
封裝/外殼： 40-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 40-QFN 裸露焊盤(pán)（6x6）
包裝： 托盤(pán)
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
XR19L400
SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER
JULY 2009
REV. 1.0.3
GENERAL DESCRIPTION
The XR19L400 (L400) is a highly integrated device that
combines
a
full-featured
single
channel
Universal
Asynchronous Receiver and Transmitter (UART) and RS-
485 transceivers. The L400 is designed to operate with a
single 3.3V or 5V power supply. The L400 is fully compliant
with RS-485 Standards.
The L400 operates in four different modes: Active, Partial
Sleep, Full Sleep and Power-Save. Each mode can be
invoked via hardware or software. Upon power-up, the
L400 is in the Active mode where the UART and RS-485
transceiver function normally. In the Partial Sleep mode, the
internal crystal oscillator of the UART or charge pump of the
RS-485 transceiver is turned off. In Full Sleep mode, both
the crystal oscillator and the charge pump are turned off.
While the UART is in the Sleep mode, the Power-Save
mode isolates the core logic from the control signals (chip
select, read/write strobes, address and data bus lines) to
minimize the power consumption. The RS-485 receivers
remain active in any of these four modes.
APPLICATIONS
Battery-Powered Equipment
Handheld and Mobile Devices
Handheld Terminals
Industrial Peripheral Interfaces
Point-of-Sale (POS) Systems
FEATURES
Meets true RS-485 standards at 3.3V or 5V operation
Up to 8 Mbps data transmission rate
45us sleep mode exit (charge pump to full power)
ESD protection for RS-485 I/O pins at
■ +/-15kV - Human Body Model
■ +/- 8kV - IEC 61000-4-2, Contact Discharge
■ +/- 15kV - IEC 61000-4-2, Air-Gap Discharge
Software compatible with industry standard 16550 UART
Intel/Motorola bus select
Complete modem interface
Sleep and Power-save modes to conserve battery power
Wake-up interrupt upon exiting low power modes
FIGURE 1. BLOCK DIAGRAM
XR19L400
UART
RS-485 Transceiver
Intel
or
M
o
tor
o
la
Bus
In
ter
face
PwrSave
A2:A0
D7:D0
IOR#
IOW# (R/W#)
CS# (CS#)
INT (IRQ#)
RESET (RESET#)
I/M#
Crystal
Osc/Buffer
X
TAL
1
X
TAL
2
BRG
64 Byte
TX FIFO
64 Byte
RX FIFO
Modem
I/Os
U
A
RT
Re
gist
ers
CTS#
DSR#
RI#
Charge Pump
ACP
C1
+
C1
-
VC
C
3
*5 V Tolerant
Inputs
GN
D
R_
E
N
CD#
VCC33
RX
RX+
RX-
TX
TX+
TX-
HALF/FULL#
VCC50
相關(guān)PDF資料
PDF描述
XR19L402IL48-F IC UART/TXRX RS485 48QFN
XR20M1170IL24TR-F IC UART FIFO I2C/SPI 64B 24QFN
XR20M1172IG28-F IC UART FIFO I2C/SPI 64B 28TSSOP
XR20M1280IL40-F IC UART I2C/SPI 128 BYTE 40QFN
XR20V2170IL40-F IC UART/TXRX I2C/SPI RS232 40QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR19L400IL40TR-F 功能描述:UART 接口集成電路 Transceiver 1 Tx/1 Rx RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR19L402 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:TWO CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER
XR19L402_09 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:TWO CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER
XR19L402IL48 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:TWO CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER
XR19L402IL48-0B-EB 功能描述:界面開(kāi)發(fā)工具 Supports L402 48 pin QFN, PCI Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類(lèi)型:RS-485 工具用于評(píng)估:ADM3485E 接口類(lèi)型:RS-485 工作電源電壓:3.3 V
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*