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SN65HVD21DR The SN65HVD21DR is an extended common-mode RS-485 transceiver from Texas Instruments. It offers a signaling rate of 5Mbps and operates over a wide common-mode voltage range.
Mfr Part #:

SN65HVD21DR

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The SN65HVD21DR is an extended common-mode RS-485 transceiver from Texas Instruments. It offers a signaling rate of 5Mbps and operates over a wide common-mode voltage range.
✓ Total Stock: 36,368 pcs
$ Price Range: $1.67

SN65HVD21DR Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
20,089 pcs
On Request
20089 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
10,000 pcs
On Request
10000 pcs On Request 1 On Request On Request 21+ On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
6,279 pcs
On Request
6279 pcs On Request 1 On Request On Request 21+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

SN65HVD21DR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Data Rate
Duplex
Fault Protection
Industrial Grade
Lead Spacing
Medical Grade
Military Grade
Mounting Type
Number of Drivers
Operating Temperature
Protocol
Receiver Hysteresis
Supplier Device Package
Supplier Package
Supply Current
Type
Voltage
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SN65HVD21DR Description

Short technical summary and product information.

The SN65HVD21DR is an active RS-485 transceiver designed by Texas Instruments for robust bidirectional data transmission on multipoint twisted-pair cables. It meets TIA/EIA-485-A standards and operates over an extended common-mode voltage range of -20V to 25V, exceeding typical RS-485 requirements.

 

Key electrical specifications include a maximum signaling rate of 5Mbps, fault protection up to ±27V, and a receiver hysteresis of 130 mV. It supports up to 256 nodes on the bus and features high ESD protection (over 16-kV HBM). The device operates within a supply voltage range of 4.5V to 5.5V and has a maximum supply current of 12000 µA.

 

This transceiver is suitable for harsh environments and long-cable networks. It includes failsafe receiver operation for open-circuit, short-circuit, and idle-bus conditions. The SN65HVD21DR is available in an 8-SOIC package suitable for surface mounting.

 

Example applications include digital motor controllers, remote sensors and terminals, industrial process control, security stations, and environmental control systems.

SN65HVD21DR Quick Information

Product Type: RS-485 Transceiver
Canonical Name: SN65HVD21DR Extended Common-Mode RS-485 Transceiver
Subcategory: RS-485 & RS-422 Transceivers

SN65HVD21DR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

SN65HVD21DR Estimated Pricing

Qty Low High
1+ $1.67 $1.67

Estimated market price range - modelled values for guidance only, not live distributor offers.

SN65HVD21DR Features

  • Extended common-mode voltage range.
  • High ESD protection up to 16-kV HBM.
  • Failsafe receiver for bus conditions.
  • Supports up to 256 nodes on the bus.
  • Half-duplex RS-485 transceiver.

SN65HVD21DR Applications

  • Ideal for long-cable industrial networks.
  • Used in digital motor controllers.
  • Suitable for remote sensor applications.
  • Applicable to industrial process control.
  • Supports security and environmental systems.

SN65HVD21DR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum signaling rate for the SN65HVD21DR?

The maximum signaling rate is 5 Mbps.

What is the operating temperature range for this transceiver?

The operating temperature range is -40°C to 85°C.

What type of package is the SN65HVD21DR supplied in?

It is supplied in an 8-SOIC package.

What is the common-mode voltage range for the SN65HVD21DR?

The common-mode voltage range is from -20 V to 25 V.

How many nodes can be connected to the SN65HVD21DR bus?

The device supports up to 256 nodes.

Does the SN65HVD21DR have failsafe receiver capabilities?

Yes, it features failsafe receiver operation for open-circuit, short-circuit, and idle-bus conditions.

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