NM485DC Murata Power Solutions Inc, NM485DC Datasheet
NM485DC
Specifications of NM485DC
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NM485DC Summary of contents
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... Driver tri-state outputs active high enable Low Profi pin DIL package style 1kVrms Isolation DESCRIPTION The NM485DC is an electrically isolated dual differential driver and receiver designed for bal- anced mulipoint bus transmission at rates up to 1.25Mbits per second. The device provides two receive channels and two driver channels ...
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... Min. Typ 150 Output Z Low level High level High impedance Min. Typ. 0 -40 Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 2009-12-09 KII_NM485DC.A03 Page Max. Units 5.0 V ±0.2 V 3.0 V ±0.2 V ±100 μA 20 μA -15 mA -250 mA 250 mA Max ...
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... The maximum number of drivers and receivers that may be placed on a single communication bus depends upon their loading characteristics, relative to the defi nition of a Unit Load (U.L.), transmission speed does not affect the unit load capability. As the NM485DC complies with the EIA-485 standard a maximum of 32 unit loads per line is recommended. A unit load usually consists of a driver-receiver pair, but not the line termination resistors. With only a 5V supply connected, the NM485DC receiver and differential outputs give levels greater than +2.7V and ± ...
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... However the added parasitic capacitance will load down the bus, and should therefore be taken into consideration. Figure 4 Figure 6 www.murata-ps.com Isolated Dual EIA-485 Driver and Receiver Figure 5 Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 NM485DC Series 2009-12-09 KII_NM485DC.A03 Page ...
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... A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” For a part holding no specifi c agency approvals, such as the NM485DC series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier ...
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... Isolated Dual EIA-485 Driver and Receiver 0.012 (0.30) 0.008 (0.20) 0.6673 (16.95) MAX RECOMMENDED FOOTPRINT All dimensions are in inches (mm) ±0.01 (0.25) TUBE OUTLINE DIMENSIONS All dimensions are in inches (mm) ±0.01 (0.25) Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 2009-12-09 KII_NM485DC.A03 Page Tube Quantity : 15 ...
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... The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without notice. Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232 2009-12-09 KII_NM485DC.A03 Page © 2009 Murata Power Solutions, Inc. ...