參數(shù)資料
型號(hào)： ADM3490ARZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 0K
描述： IC TXRX RS-422/485 3.3V 8-SOIC
標(biāo)準(zhǔn)包裝： 98
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 1/1
規(guī)程： RS422，RS485
電源電壓： 3 V ~ 3.6 V
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SO
包裝： 管件
產(chǎn)品目錄頁(yè)面： 790 (CN2011-ZH PDF)
3.3 V Slew Rate Limited, Half- and
Full-Duplex, RS-485/RS-422 Transceivers
Data Sheet
ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2005-2011 Analog Devices, Inc. All rights reserved.
FEATURES
Operate with 3.3 V supply
Interoperable with 5 V logic
EIA RS-422 and RS-485 compliant over full
common-mode range
Data rate options
ADM3483/ADM3488: 250 kbps
ADM3485/ADM3490/ADM3491: 10 Mbps
Half- and full-duplex options
Reduced slew rates for low EMI (ADM3483 and ADM3488)
2 nA supply current in shutdown mode
(ADM3483/ADM3485/ADM3491)
Up to 32 transceivers on the bus
7 V to +12 V bus common-mode range
Specified over the –40°C to +85°C temperature range
8 ns skew (ADM3485/ADM3490/ADM3491)
8-lead SOIC and 14-lead SOIC (ADM3491 only) packages
APPLICATIONS
Low power RS-485/RS-422 applications
Telecom
Industrial process control
HVAC
GENERAL DESCRIPTION
The ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 are
low power, differential line transceivers designed to operate using a
single 3.3 V power supply. Low power consumption, coupled with a
shutdown mode, makes the ADM3483/ADM3485/ADM3488/
ADM3490/ADM3491 ideal for power-sensitive applications.
The ADM3488/ADM3490/ADM3491 feature full-duplex com-
munication, while the ADM3483/ADM3485 are designed for
half-duplex communication.
FUNCTIONAL BLOCK DIAGRAMS
R
D
RO
VCC
RE
DI
DE
ADM3483/
ADM3485
A
GND
B
05
52
4-
02
7
Figure 1.
R
D
RO
DI
ADM3488/
ADM3490
A
B
Z
Y
0
552
4-
0
26
VCC
GND
Figure 2.
R
D
RO
RE
DI
DE
ADM3491
A
B
Z
Y
05
52
4-
02
5
Figure 3.
The ADM3483/ADM3488 feature slew rate limited drivers that
minimize EMI and reduce reflections caused by improperly ter-
minated cables, allowing error-free data transmission at data rates
up to 250 kbps.
The ADM3485/ADM3490/ADM3491 transmit at up to 10 Mbps.
The receiver input impedance is 12 kΩ, allowing up to 32 trans-
ceivers to be connected on the bus. A thermal shutdown circuit
prevents excessive power dissipation caused by bus contention or
by output shorting. If a significant temperature increase is detected
in the internal driver circuitry during fault conditions, then the
thermal shutdown circuit forces the driver output into a high
impedance state. If the inputs are unconnected (floating), the
receiver contains a fail-safe feature that results in a logic high
output state. The parts are fully specified over the commercial
and industrial temperature ranges. The ADM3483/ADM3485/
ADM3488/ADM3490 are available in 8-lead SOIC_N; the
ADM3491 is available in a 14-lead SOIC_N.
相關(guān)PDF資料
PDF描述
JBXEA1G07FPSDS CONN RCPT 7POS DBL NUT SKT SLD
ADM3485ARZ IC TXRX RS-485 HS 3.3V 8-SOIC
VI-25N-CU-F4 CONVERTER MOD DC/DC 18.5V 200W
JBXEA1G04FSSDS CONN RCPT 4POS DOUBLE NUT SOLDER
VI-BT1-IV-S CONVERTER MOD DC/DC 12V 150W
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