Features FAILSAFE receiver, RO = HIGH for: OPEN inputs Terminated inputs SHORTED inputs Optimal for use in SAE J1708 Interfaces Compatible with popular interface standards: TIA/EIA-485 and TIA/EIA-422-A CCITT recommendation V.11 Bi-directional transceiver Designed for multipoint transmission Wide bus common mode range (−7V to +12V) Available in plastic DIP and SOIC packages Description The DS36277 Dominant Mode Multipoint Transceiver is designed for use on bi-directional differential busses. It is optimal for use on Interfaces that utilize Society of Automotive Engineers (SAE) J1708 Electrical Standard. The device is similar to standard TIA/EIA-485 transceivers, but differs in enabling scheme. The Driver's Input is normally externally tied LOW, thus providing only two states: Active (LOW), or Disabled (OFF). When the driver is active, the dominant mode is LOW, conversely, when the driver is disabled, the bus is pulled HIGH by external bias resistors. The receiver provides a FAILSAFE feature that guarantees a known output state when the Interface is in the following conditions: Floating Line, Idle Line (no active drivers), and Line Fault Conditions (open or short). The receiver output is HIGH for the following conditions: Open Inputs, Terminated Inputs (50Ω), or Shorted Inputs. FAILSAFE is a highly desirable feature when the transceivers are used with Asynchronous Controllers such as UARTs.

Typical Application click for larger image	Connection Diagram click for larger image
Typical Performance click for larger image

Datasheets

Title		Size	Date	Other Language
	DS36277 Dominant Mode Multipoint Transceiver	395 Kbytes	12-Aug-08	日本語

Application Notes

Title		Size	Date	Other Language
	AN-1031: Application Note 1031 TIA/EIA-422-B Overview	101 Kbytes	2-Oct-02
	AN-915: Application Note 915 Automotive Physical Layer SAE J1708 and the DS36277	90 Kbytes	2-Oct-02
	AN-1057: Application Note 1057 Ten Ways to Bulletproof RS-485 Interfaces	155 Kbytes	2-Oct-02

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DS36277TMX/NOPB DS36277TMX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 20352 AVNET-EM Worldwide 2500 DIGI-KEY Worldwide 12500 MOUSER Worldwide 2399 TAYLOR Americas 20352	$0.73 each at 1K+ pcs	reel of 2500

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
DS36277TM	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
DS36277TN	NONE	NATIONAL SEMICONDUCTOR	16 Nov 2008

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS36277.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS36277 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
DS36277TMX/NOPB DS36277TMX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT DS362 77TM

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for DS36277.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for DS36277 is located at RoHS Status.

CAD Symbols and Models Download DS36277 CAD Symbols

Models N/A

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
DS36277TM	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
DS36277TN	NONE	NATIONAL SEMICONDUCTOR	16 Nov 2008