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參數(shù)資料
| 型號(hào)： | ADM1485 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | +-5 V Low Power EIA RS-485 Transceiver |
| 中文描述： | -5 V低功耗環(huán)境影響評(píng)估的RS - 485收發(fā)器 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 139K |
| 代理商： | ADM1485 |
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
+5 V Low Power
EIA RS-485 Transceiver
ADM1485
FUNCTIONAL BLOCK DIAGRAM
8-Lead
ADM1485
R
D
RO
RE
DE
DI
V
CC
B
A
GND
FEATURES
Meets EIA RS-485 Standard
30 Mb/s Data Rate
Single +5 V Supply
–7 V to +12 V Bus Common-Mode Range
High Speed, Low Power BiCMOS
Thermal Shutdown Protection
Short Circuit Protection
Zero Skew Driver
Driver Propagation Delay: 10 ns
Receiver Propagation Delay: 25 ns
High Z Outputs with Power Off
Superior Upgrade for LTC1485
APPLICATIONS
Low Power RS-485 Systems
DTE-DCE Interface
Packet Switching
Local Area Networks
Data Concentration
Data Multiplexers
Integrated Services Digital Network (ISDN)
GENERAL DESCRIPTION
The ADM1485 is a differential line transceiver suitable for high
speed bidirectional data communication on multipoint bus
transmission lines. It is designed for balanced data transmission
and complies with both EIA Standards RS-485 and RS-422.
The part contains a differential line driver and a differential line
receiver. Both the driver and the receiver may be enabled inde-
pendently. When disabled, the outputs are tristated.
The ADM1485 operates from a single +5 V power supply.
Excessive power dissipation caused by bus contention or by
output shorting is prevented by a thermal shutdown circuit.
This feature forces the driver output into a high impedance state
if during fault conditions a significant temperature increase is
detected in the internal driver circuitry.
Up to 32 transceivers may be connected simultaneously on a
bus, but only one driver should be enabled at any time. It is
important therefore that the remaining disabled drivers do not
load the bus. To ensure this, the ADM1485 driver features high
output impedance when disabled and also when powered down.
This minimizes the loading effect when the transceiver is not
being utilized. The high impedance driver output is maintained
over the entire common-mode voltage range from –7 V to +12 V.
The receiver contains a fail safe feature which results in a logic
high output state if the inputs are unconnected (floating).
The ADM1485 is fabricated on BiCMOS, an advanced mixed
technology process combining low power CMOS with fast
switching bipolar technology. All inputs and outputs contain
protection against ESD; all driver outputs feature high source
and sink current capability. An epitaxial layer is used to guard
against latch-up.
The ADM1485 features extremely fast switching speeds. Mini-
mal driver propagation delays permit transmission at data rates
up to 30 Mbits/s while low skew minimizes EMI interference.
The part is fully specified over the commercial and industrial
temperature range and is available in an 8-lead DIL/SOIC
package.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2000
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| ADM1485AN | RES 680K OHM 1/4W 1% 1206 SMD |
| ADM1485AQ | +-5 V Low Power EIA RS-485 Transceiver |
| ADM1485AR | +-5 V Low Power EIA RS-485 Transceiver |
| ADM1485JN | +-5 V Low Power EIA RS-485 Transceiver |
| ADM1485JR | +-5 V Low Power EIA RS-485 Transceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM1485_12 | 制造商:AD 制造商全稱:Analog Devices 功能描述:5 V Low Power EIA RS-485 Transceiver |
| ADM1485AN | 制造商:Analog Devices 功能描述:Single Transmitter/Receiver RS-422/RS-485 8-Pin PDIP 制造商:Rochester Electronics LLC 功能描述:RS-485 HIGH SPEED I/F TX. - Bulk 制造商:Analog Devices 功能描述:Transceiver IC Transceiver Type:Differen |
| ADM1485ANZ | 功能描述:IC TXRX RS-485 HS 5V 8-DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:RS-232 & USB Transceiver 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):1/1 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2 |
| ADM1485AQ | 制造商:AD 制造商全稱:Analog Devices 功能描述:+-5 V Low Power EIA RS-485 Transceiver |
| ADM1485AR | 制造商:Rochester Electronics LLC 功能描述:RS-485 HIGH SPEED I/F TX. - Bulk 制造商:Analog Devices 功能描述:BUS TRANSCEIVER RS485 1485 SOIC8 |
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