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DS8921AM The Texas Instruments DS8921AM is a differential line driver and receiver pair designed for RS422 and RS485 applications. It offers a typical propagation delay of 12 ns and operates over a wide common-mode voltage range.
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DS8921AM

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments DS8921AM is a differential line driver and receiver pair designed for RS422 and RS485 applications. It offers a typical propagation delay of 12 ns and operates over a wide common-mode voltage range.
✓ Total Stock: 41,029 pcs

DS8921AM Available from 3 distributors

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✓ Non-Authorised
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Romaks Technologies ✓
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40,178 pcs
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40178 pcs On Request 1 On Request On Request On Request On Request On Request
Speed Components Ltd ✓
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810 pcs
On Request
810 pcs On Request 1 On Request On Request 21AM On Request On Request
Partservice ✓
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41 pcs
On Request
41 pcs On Request 1 On Request On Request On Request On Request On Request
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DS8921AM Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Duplex
Lead Spacing
Lead Style
Mounting Type
Number of Drivers
Operating Temperature
Propagation Delay
Protocol
Receiver Hysteresis
Supplier Device Package
Supply Current
Type
Voltage
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DS8921AM Description

Short technical summary and product information.

The DS8921AM from Texas Instruments is a differential line driver and receiver pair, specifically designed to meet standards such as ST506, ST412, and ESDI disk drive requirements, as well as EIA RS-422. This transceiver features a typical propagation delay of 12 ns and an output skew of 0.5 ns, ensuring reliable signal transmission.

 

With a receiver sensitivity of ±0.2 V and a typical input hysteresis of 70 mV, the DS8921AM provides robust noise margin for slowly changing input waveforms. It supports a high differential or common-mode input voltage range of ±7 V. The device operates within a supply voltage range of 4.5V to 5.5V and is available in an 8-SOIC package suitable for surface mounting.

 

This transceiver is compatible with TTL and CMOS logic levels, making it versatile for various system designs. It is designed for full duplex communication and supports signaling rates up to 10 Mbps. The operating temperature range for the industrial variant is -40°C to +85°C, while the standard variant operates from 0°C to 70°C.

DS8921AM Quick Information

Product Type: Line Transceiver
Canonical Name: DS8921AM Differential Line Driver and Receiver Pair
Subcategory: RS-485 & RS-422 Transceivers

DS8921AM Compliance

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

DS8921AM Features

  • Differential line driver and receiver pair.
  • 12 ns typical propagation delay.
  • ±7 V high common-mode input voltage range.
  • 70 mV typical receiver input hysteresis.
  • 8-SOIC package for surface mounting.

DS8921AM Applications

  • Meets ST506 disk drive standard.
  • Meets ST412 disk drive standard.
  • Meets ESDI disk drive standard.
  • Complies with EIA RS-422 standard.
  • Suitable for RS485 interfaces.

DS8921AM FAQs

5 frequently asked questions generated from this part’s specifications.
What is the typical propagation delay for the DS8921AM?

The typical propagation delay for the DS8921AM is 12 ns.

What is the operating temperature range for the DS8921AT?

The DS8921AT operates from -40°C to +85°C.

What protocols does the DS8921AM support?

The DS8921AM supports RS422 and RS485 protocols.

What is the receiver sensitivity of the DS8921AM?

The receiver sensitivity is ±0.2 V.

What is the package type for the DS8921AM?

The DS8921AM is available in an 8-SOIC package.

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