SN65HVD20 Status: ACTIVE

Extended Common-mode RS-485 Transceiver

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Datasheet

Extended Common-Mode RS-485 Transceivers (Rev. D) (PDF 705 KB) 8206 views
06 Apr 2005

	SN65HVD20	SN65HVD21	SN65HVD22	SN65HVD23	SN65HVD24
Drivers Per Package	1	1	1	1	1
Receivers Per Package	1	1	1	1	1
Supply Voltage(s)(V)	5	5	5	5	5
ESD(kV)	16	16	16	16	16
Temp Range(C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Signaling Rate(Mbps)	25	5	0.5	25	3
ICC(Max)(mA)	9	12	9	11	14
Fail Safe	Idle, Open, Short	Idle, Open, Short	Idle, Open, Short	Open, Short	Open, Short
Isolated	No	No	No	No	No
# of TX/RX	1 TX / 1 RX	1 TX / 1 RX	1 TX / 1 RX	1 TX / 1 RX	1 TX / 1 RX
Common Mode Range	-20 to 25	-20 to 25	-20 to 25	-20 to 25	-20 to 25
Number of Nodes	64	256	256	64	256
Duplex	Half	Half	Half	Half	Half
Footprint	SN75176	SN75176	SN75176	SN75176	SN75176
Comments	Wide Common Mode, 25 Mbps	Wide Common Mode, 5 Mbps	Wide Common Mode, 0.5 Mbps	Receiver Equalization, Wide Common Mode, 25 Mbps	Receiver Equalization, Wide Common Mode, 3 Mbps
Pin/Package	8PDIP, 8SOIC	8PDIP, 8SOIC	8PDIP, 8SOIC	8PDIP, 8SOIC	8PDIP, 8SOIC
Rating	Catalog	Catalog	Catalog	Catalog	Catalog
Fault Protection(V)	-27 to 27	-27 to 27	-27 to 27	-27 to 27	-27 to 27
	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory

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Product Information

Features

Common-Mode Voltage Range (–20 V to 25 V) More Than Doubles TIA/EIA-485 Requirement
Receiver Equalization Extends Cable Length, Signaling Rate (HVD23, HVD24)
Reduced Unit-Load for Up to 256 Nodes
Bus I/O Protection to Over 16-kV HBM
Failsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus Conditions
Low Standby Supply Current 1-µA Max
More Than 100 mV Receiver Hysteresis
APPLICATIONS
- Long Cable Solutions
  - Factory Automation
  - Security Networks
  - Building HVAC
- Severe Electrical Environments
  - Electrical Power Inverters
  - Industrial Drives
  - Avionics

Description

The transceivers in the HVD2x family offer performance far exceeding typical RS-485 devices. In addition to meeting all requirements of the TIA/EIA-485-A standard, the HVD2x family operates over an extended range of common-mode voltage, and has features such as high ESD protection, wide receiver hysteresis, and failsafe operation. This family of devices is ideally suited for long-cable networks, and other applications where the environment is too harsh for ordinary transceivers.

These devices are designed for bidirectional data transmission on multipoint twisted-pair cables. Example applications are digital motor controllers, remote sensors and terminals, industrial process control, security stations, and environmental control systems.

These devices combine a 3-state differential driver and a differential receiver, which operate from a single 5-V power supply. The driver differential outputs and the receiver differential inputs are connected internally to form a differential bus port that offers minimum loading to the bus. This port features an extended common-mode voltage range making the device suitable for multipoint applications over long cable runs.

The ’HVD20 provides high signaling rate (up to 25 Mbps) for interconnecting networks of up to 64 nodes.

The ’HVD21 allows up to 256 connected nodes at moderate data rates (up to 5 Mbps). The driver output slew rate is controlled to provide reliable switching with shaped transitions which reduce high-frequency noise emissions.

The ’HVD22 has controlled driver output slew rate for low radiated noise in emission-sensitive applications and for improved signal quality with long stubs. Up to 256 ’HVD22 nodes can be connected at signaling rates up to 500 kbps.

The ’HVD23 implements receiver equalization technology for improved jitter performance on differential bus applications with data rates up to 25 Mbps at cable lengths up to 160 meters.

The ’HVD24 implements receiver equalization technology for improved jitter performance on differential bus applications with data rates in the range of 1 Mbps to 10 Mbps at cable lengths up to 1000 meters.

The receivers also include a failsafe circuit that will provide a high-level output within 250 microseconds after loss of the input signal. The most common causes of signal loss are disconnected cables, shorted lines, or the absence of any active transmitters on the bus. This feature prevents noise from being received as valid data under these fault conditions. This feature may also be used for Wired-Or bus signaling.

The SN65HVD2X devices are characterized for operation over the temperature range of –40°C to 85°C.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
SN65HVD20D	ACTIVE	-40 to 85	1.55 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
SN65HVD20DG4	ACTIVE	-40 to 85	1.55 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
SN65HVD20DR	ACTIVE	-40 to 85	1.40 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
SN65HVD20DRG4	ACTIVE	-40 to 85	1.40 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R	Purchase Samples
SN65HVD20P	ACTIVE	-40 to 85	1.55 \| 1ku	PDIP (P) \| 8	View	50 \| TUBE	Purchase Samples
SN65HVD20PE4	ACTIVE	-40 to 85	1.55 \| 1ku	PDIP (P) \| 8	View	50 \| TUBE	Purchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

	TI Inventory Status	Reported Distributor Inventory
SN65HVD20D	As of 10:29 AM GMT, 03 Jul 2009	As of 10:29 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	Avnet	345
			DigiKey	59
			Newark	>1k
		Asia	WPI	75
		Europe	Arrow Southern Europe	75
			Avnet-SILICA	25
			Farnell	912
SN65HVD20DG4	As of 10:29 AM GMT, 03 Jul 2009	As of 10:29 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
		Americas	Mouser Electronics	103
		Europe	EBV Elektronik	225
SN65HVD20DR	As of 10:29 AM GMT, 03 Jul 2009	As of 10:29 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
	4 Weeks	Europe	Abacus Polar	>1k
SN65HVD20DRG4	As of 10:29 AM GMT, 03 Jul 2009	As of 10:29 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	4 Weeks	Americas	DigiKey	Available
SN65HVD20P	As of 10:29 AM GMT, 03 Jul 2009	As of 10:29 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	1 Week	Americas	Mouser Electronics	156
	1 Week	Americas	Rochester Electronics	>1k
SN65HVD20PE4	As of 10:29 AM GMT, 03 Jul 2009	As of 10:29 AM GMT, 03 Jul 2009
	Lead Time	Region	Company	In Stock	Purchase
	1 Week	None Reported View Distributors
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
SN65HVD20D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN65HVD20DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN65HVD20DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN65HVD20DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN65HVD20P	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
SN65HVD20PE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for SN65HVD20

Datasheet

Extended Common-Mode RS-485 Transceivers (Rev. D) (PDF 705 KB) 8206 views
06 Apr 2005

Application Notes

The RS-485 Unit Load and Maximum Number of Bus Connections (HTM 8 KB) 1611 views
15 Mar 2004 Read Abstract

View Application Notes for RS-485

Simulation Models

IBIS Model
- SN65HVD20 IBIS Model (Rev. A) (Multiple File Format) 137 views
  15 Aug 2008 Read Abstract

Tools & Software

Name	Part #	Company	Tool / Software Type
SN65HVD22EVM Evaluation Module	SN65HVD22EVM	Texas Instruments	Development Boards/EVMs

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SN65HVD20 Status: ACTIVE

Extended Common-mode RS-485 Transceiver

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