DS8922AM/NOPB Equivalent & Substitute Parts

Part Overview

The DS8922AM/NOPB is a 2/2 transceiver with full-duplex RS422 and RS485 protocol support, manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The obsolete status necessitates evaluation of active alternative components that maintain functional and electrical compatibility.

Substiute Parts

DS8922AM/NOPB

Texas InstrumentsIn Stock: 8608DS8922AM/NOPB Datasheet

Current PartRFQ

ADM4168EBRUZ

Analog Devices Inc.In Stock: 18240ADM4168EBRUZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS8922AM/NOPB is determined by the following critical parameters:

• Protocol compatibility: RS422 and RS485 support required
• Driver/Receiver configuration: 2/2 topology mandatory
• Duplex mode: Full-duplex operation required
• Supply voltage range: 4.5V ~ 5.5V compatibility
• Mounting type: Surface mount required
• Package compatibility: Pin count and electrical interface equivalence

The ADM4168EBRUZ from Analog Devices Inc. satisfies these core functional requirements while maintaining electrical parameter compatibility within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

The ADM4168EBRUZ is a functionally equivalent substitute for the obsolete DS8922AM/NOPB based on the following criteria:

Both components maintain identical protocol support (RS422/RS485), driver/receiver configuration (2/2), duplex mode (full), and supply voltage range (4.5V ~ 5.5V). Both are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

The ADM4168EBRUZ offers extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), providing broader environmental applicability. The receiver hysteresis differential (60 mV versus 70 mV) remains within acceptable noise margin specifications for RS422/RS485 applications.

Package transition from 16-SOIC to 16-TSSOP requires PCB layout modification. The ADM4168EBRUZ active product status ensures long-term availability and supply chain continuity compared to the obsolete DS8922AM/NOPB.

Frequently Asked Questions (FAQ)

Q: Can the ADM4168EBRUZ directly replace the DS8922AM/NOPB without circuit modifications?

A: Electrical functionality is compatible. However, the package change from 16-SOIC to 16-TSSOP requires PCB footprint redesign. Pin assignments must be verified against both datasheets to ensure correct signal routing.

Q: What is the significance of the receiver hysteresis difference (70 mV vs. 60 mV)?

A: Both values provide adequate noise immunity for RS422/RS485 bus applications. The 60 mV hysteresis of the ADM4168EBRUZ is within standard operating parameters and does not compromise signal integrity in typical installations.

Q: Does the extended operating temperature range of the ADM4168EBRUZ affect compatibility?

A: The extended range (-40°C ~ 85°C) is a superset of the original specification (0°C ~ 70°C). This provides enhanced capability without reducing compatibility for applications within the original temperature window.

Q: Are there supply chain advantages to using the ADM4168EBRUZ?

A: Yes. The ADM4168EBRUZ maintains active product status with documented inventory availability, whereas the DS8922AM/NOPB is obsolete. This ensures sustained component availability for production and maintenance applications.

Q: What compliance certifications apply to both components?

A: Both the DS8922AM/NOPB and ADM4168EBRUZ are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.