參數(shù)資料
型號(hào)： SP339EER1-L
廠商： Exar Corporation
文件頁數(shù)： 1/23頁
文件大?。?/td> 0K
描述： IC TXRX RS232/485 TERM 40QFN
特色產(chǎn)品： SP339 Multiprotocol Transceiver
標(biāo)準(zhǔn)包裝： 490
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 3/5
規(guī)程： RS232，RS422，RS485
電源電壓： 3.3V，5V
安裝類型： 表面貼裝
封裝/外殼： 40-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 40-QFN（6x6）
包裝： 托盤
其它名稱： 1016-1704
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
SP339E
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
NOVEMBER 2013
REV. 1.0.3
GENERAL DESCRIPTION
The SP339 is an advanced multiprotocol transceiver
supporting RS-232, RS-485, and RS-422 serial
standards in a 40 pin QFN package. Integrated cable
termination and four configuration modes allow all
three protocols to be used interchangeably over a
single cable or connector with no additional switching
components.
Full
operation
requires
only
four
external charge pump capacitors.
The RS-485/422 modes feature one driver and one
receiver (1TX/1RX) in both half and full duplex
configurations.
The
RS-232
mode
(3TX/5RX)
provides full support of all eight signals commonly
used with the DB9 RS-232 connector. A dedicated
diagnostic loopback mode is also provided.
The high speed drivers operate up to 20Mbps in RS-
485/422 modes, and up to 1Mbps in RS-232 mode.
All drivers can be slew limited to 250kbps in any
mode to minimize electromagnetic interference (EMI).
All transmitter outputs and receiver inputs feature
robust electrostatic discharge (ESD) protection to
±15kV IEC-61000-4-2 Air Gap, ±8kV IEC-61000-4-2
Contact, and ±15kV Human Body Model (HBM).
Each receiver output has full fail-safe protection to
avoid system lockup, oscillation, or indeterminate
states by defaulting to logic-high output level when
the inputs are open, shorted, or terminated but
undriven. No external biasing resistors are required.
The RS-232 receiver inputs include a 5k
pull-down
to ground. The RS-485/422 receiver inputs are high
impedance (>96k
when termination is disabled),
allowing up to 256 devices on a single communication
bus (1/8th unit load).
The SP339 operates from a single power supply,
either 3.3V or 5V, with low idle current (2mA typical in
all modes). The shutdown mode consumes less than
10A for low power standby operation.
FEATURES
Pin selectable Cable Termination
No external resistors required for RS-485/422
termination and biasing
3.3V or 5V Single Supply Operation
Robust ESD Protection on bus pins
■ ±15kV IEC 61000-4-2 (Air Gap)
■ ± 8kV IEC 61000-4-2 (Contact)
■ ±15kV Human Body Model (HBM)
Max Data Rate of 20Mbps in RS-485/422 Modes
and up to 1Mbps in RS-232 Modes
Pin selectable 250kbps Slew Limiting
3 Drivers, 5 Receivers RS-232/V.28
1 Driver, 1 Receiver RS-485/422
■ Full and Half Duplex Configuration
■ 1/8th Unit Load, up to 256 receivers on bus
RS-485/422 Enhanced Failsafe for open, shorted,
or terminated but idle inputs
Space saving 6mm x 6mm QFN-40 Package
Pin compatible with SP338E
TYPICAL APPLICATIONS
Dual Protocol Serial Ports (RS-232 or RS-485/422)
Industrial Computers
Industrial and Process Control Equipment
Point-Of-Sale Equipment
Networking Equipment
HVAC Controls Equipment
Building Security and Automation Equipment
ORDERING INFORMATION
PART NUMBER
PACKAGE
OPERATING TEMPERATURE RANGE
DEVICE STATUS
SP339EER1-L
40-pin QFN
-40°C to +85°C
Active
SP339EER1-L/TR
40-pin QFN
-40°C to +85°C
Active
SP339ECR1-L
40-pin QFN
0°C to +70°C
Active
SP339ECR1-L/TR
40-pin QFN
0°C to +70°C
Active
NOTE:
-L = Green / RoHS Compliant, /TR = Tape and Reel
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SP339EER1-L/TR 制造商:Exar Corporation 功能描述:SP339E Series 3.3 V or 5 V 20 Mbps RS-232/RS-485/RS-422 Transceiver - QFN-40
SP339EER1-L-TR 功能描述:RS-422/RS-485 接口 IC Multiprotocol Transceiver RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube
SP339EER1TR 制造商:EXAR 制造商全稱:EXAR 功能描述:RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
SP34 制造商:BES 功能描述:3/4" x 6" Spade Bit 制造商:BES MANUFACTURING 功能描述:SPADE BIT 3/4 X 6 INCH
SP-34 制造商:Triad Magnetics 功能描述:
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