NM485D Murata Power Solutions, NM485D Datasheet
NM485D
Specifications of NM485D
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NM485D Summary of contents
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... Low Profile 24 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. The two driver channels have an active high enable ...
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... Max 120 145 70 145 150 300 80 120 Output Z Low level High level High impedance Min. Typ. Max -40 125 KII_NM485DC.A05 Page Units μA μ Units Units ºC ºC ...
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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 definition 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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... LONWORKS data rate standard is 1.25Mbps. The resultant maximum system performance for the LONWORKS EIA-485 con- figuration is therefore 32 nodes at 1.25Mbps. The NM485D isolated serial interface devices supports this configuration, as well as any lower specified system. The EIA-485 standard defines the maximum line length as a function of data rate (in Mbps). This implies that the user must choose between the line length of the network and its maximum data transmission rate. The isolated interface has been used in previous confi ...
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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 specific 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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... All dimensions are in inches (mm) ±0.01 (0.25) TUBE OUTLINE DIMENSIONS All dimensions are in inches (mm) ±0.01 (0.25) This product is subject to the following and the Life and Safety Critical Application Sales Refer to: http://www.murata-ps.com/requirements/ Tube Quantity : 15 operating requirements Policy: © 2012 Murata Power Solutions, Inc. KII_NM485DC.A05 Page ...