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| 型號(hào)： | SP337EUEY-0A-EB |
| 廠商： | Exar Corporation |
| 文件頁(yè)數(shù)： | 1/18頁(yè) |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR SP337EUEY |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 接口，收發(fā)器，RS-232，RS-422，RS-485 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | SP337EUEY |
| 主要屬性： | * |
| 次要屬性： | * |
| 已供物品： | 板 |
| 其它名稱(chēng)： | 1016-1376 |
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Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
SP337E
3.3V TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER
MARCH 2011
REV. 1.0.2
GENERAL DESCRIPTION
The SP337E is a dual mode serial transceiver
containing both RS-232 and RS-485/422 line drivers
and receivers. The RS-232 mode provides three
drivers and five receivers to support all eight signals
commonly used in the DB9 serial port connector
(3TX/5RX). In RS-485 mode the device features two
independent high speed RS-485/422 transmit and
receive channels (2TX/2RX). The default RS-485
configuration is full-duplex, but half-duplex operation
can be obtained by tying together the TX and RI pins,
and the TXEN and RXEN signals.
The SP337E is pin compatible to Exar’s SP334.
The SP337EB features a maximum data rate of
250kbps in RS-232 mode and a maximum data rate
of 15Mbps in RS-485. However, the SP337EU
features a maximum data rate of 1Mbps in RS-232
mode and a maximum data rate of 15Mbps in RS-485
mode.
The Exar-patented high efficiency charge pumps
(5,306,954) deliver true RS-232 driver output
voltages from a single power supply from 3.3V to 5V.
Charge pump outputs are self-monitored to minimize
power consumption. The SP337E requires only four
0.1
μF capacitors for complete functionality.
All RS-485 receivers or transceivers feature high
impedance inputs which allow up to 256 transceivers
on a single shared bus. When configured in RS-485
mode, each driver may be individually enabled or put
into tri-state, simplifying use on shared buses or for
bidirectional communication. The RS-485/422 drivers
can be disabled (high-Z output) by the TXEN enable
pin. The RS-232 receiver outputs can be disabled by
the RXEN enable pin.
All receivers have advanced failsafe protection to
prevent oscillation when inputs are un-connected. In
RS-232 mode, each receiver input has a 5k
Ω pull-
down to ground. in RS-485 mode, receivers will
default to output logic 1 if inputs are floating, shorted,
or open but terminated.
All driver outputs and receiver inputs are protected
against ESD strikes up to +/-15,000 volts.
FEATURES
3.3V to 5V Single Supply Operation
Robust +/-15kV ESD Protection
■ Human Body Model
Max Data Rate of 15Mbps in RS-485 mode
and up to 1Mbps in RS-232 mode (SP337EU)
3 Drivers, 5 Receivers RS-232/V.28
2 Drivers, 2 Receivers RS-485/RS-422
■ Full-Duplex Configuration
■ 1/8th Unit Load, up to 256 receivers on bus
RS-485 Advanced Failsafe on Open, Short or
Terminated Lines
Full Differential Driver Tri-State (Hi-Z) Control
Receiver Output Tri-State Control
WSOIC-28 or TSSOP-28 Package
TYPICAL APPLICATIONS
Dual Protocol Serial Ports (RS-232 or RS-485)
Industrial Computers
Industrial and Process Control Equipment
Point-Of-Sales Equipment
Networking Equipment
HVAC Controls Equipment
Building Security Equipment
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP337EUEY-L | 功能描述:RS-422/RS-485 接口 IC RS232/422/RS485 Transceiver Multi 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 |
| SP337EUEY-L/TR | 功能描述:RS-422/RS-485 接口 IC RS232/422/RS485 Transceiver Multi 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 |
| SP3385N | 制造商:Cooper Crouse-Hinds 功能描述: |
| SP338ECR1-L | 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 |
| SP338ECR1-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 |
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