DS8922N Equivalent & Substitute Parts Reference

Part Overview

The DS8922N from Texas Instruments is an RS422/RS485 interface transceiver IC featuring dual two drivers and receivers in a full duplex configuration. Housed in a 16-DIP through-hole package, it operates within a 4.5V to 5.5V supply voltage range and a temperature range of 0°C to 70°C. The device is listed with an obsolete status, necessitating the identification of suitable substitute models for continued design support and product sustainment.

Substiute Parts

DS8922N

Texas InstrumentsIn Stock: 3349DS8922N Datasheet

Current PartRFQ

SN751178N

Texas InstrumentsIn Stock: 21710SN751178N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is determined strictly by the following parameters: manufacturer, product category, type (transceiver), protocol (RS422, RS485), the number of drivers/receivers (2/2), duplex (full), receiver hysteresis, supply voltage range, operating temperature, mounting type, package/case, RoHS and REACH status, and ECCN. Substitute candidates must match or exceed these criteria to be considered functionally and mechanically compliant.

Parameter Comparison

Engineering Selection Recommendations

Substitute selection for DS8922N is primarily necessitated due to its obsolete status. The SN751178N from Texas Instruments matches the key electrical, mechanical, and protocol specifications, including the same package and mounting type, number of drivers/receivers, supply voltage, and full duplex RS422/RS485 functionality. SN751178N offers ROHS3 compliance, extended operating temperature, and active product status. Compliance and certification data are consistent with requirements for regulated markets.

Frequently Asked Questions (FAQ)

Q1: Which parameters are required for valid substitution of interface transceivers?
A1: Manufacturer, category, type, protocol, number of drivers/receivers, duplex, receiver hysteresis, supply voltage, operating temperature, mounting type, and package/case must be matching or compatible.

Q2: Are there any differences in mechanical compatibility between DS8922N and SN751178N?
A2: Both parts use the 16-DIP (0.300", 7.62mm) through-hole package, ensuring mechanical compatibility for PCB mounting.

Q3: How does receiver hysteresis affect substitution suitability?
A3: DS8922N specifies 70 mV and SN751178N specifies 50 mV; this is a defined electrical parameter and is part of the specification alignment.

Q4: What compliance certifications should be reviewed for substitute selection?
A4: RoHS and REACH status, along with ECCN classification, must be aligned with environmental and export requirements. SN751178N is ROHS3 compliant and REACH unaffected.

Q5: Is extended operating temperature relevant in this equivalence?
A5: SN751178N offers a wider operating temperature range (-20°C ~ 85°C) compared to DS8922N (0°C ~ 70°C), included as per the provided input parameters.