SN75ALS197N Equivalent & Substitute Parts

Part Overview

The SN75ALS197N is a 0/4 Receiver interface IC manufactured by Texas Instruments in a 16-DIP through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The SN75ALS197N operates within a 4.75V to 5.25V supply voltage range and maintains a receiver hysteresis of 120 mV across an operating temperature range of 0°C to 70°C. Identifying compatible alternatives ensures design flexibility and supply chain reliability.

Substiute Parts

SN75ALS197N

Texas InstrumentsIn Stock: 1194SN75ALS197N Datasheet

Current PartRFQ

SN75ALS197DR

Texas InstrumentsIn Stock: 25345SN75ALS197DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75ALS197N is determined by strict equivalence across the following critical parameters:

• Functional Specification: Number of Drivers/Receivers (0/4)
• Electrical Performance: Receiver Hysteresis (120 mV), Supply Voltage Range (4.75V ~ 5.25V)
• Operating Conditions: Temperature Range (0°C ~ 70°C)
• Base Product Number: 75ALS197 (identical core functionality)
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected, ECCN EAR99

The SN75ALS197DR qualifies as a manufacturer-recommended substitute because it maintains identical electrical and functional specifications while differing only in mounting technology (surface mount versus through-hole) and packaging format (tape & reel versus bulk).

Parameter Comparison

Engineering Selection Recommendations

The SN75ALS197DR is the manufacturer-recommended substitute for the obsolete SN75ALS197N. Both parts maintain identical electrical specifications, functional performance, and regulatory compliance status (ROHS3 Compliant, REACH Unaffected). The primary distinction is packaging format: the SN75ALS197N uses through-hole DIP mounting, while the SN75ALS197DR employs surface-mount SOIC technology. Selection between these parts depends on PCB assembly requirements and design constraints. The SN75ALS197DR's active product status ensures continued availability and supply chain support, whereas the SN75ALS197N's obsolete classification limits future procurement options.

Frequently Asked Questions (FAQ)

Q: Can the SN75ALS197DR directly replace the SN75ALS197N in existing designs?

A: Electrical and functional compatibility is complete. However, PCB layout modifications are required due to different mounting technologies: the SN75ALS197N is through-hole mounted, while the SN75ALS197DR is surface-mount. Pin-to-pin functionality remains identical.

Q: What are the key parameters that define substitution eligibility?

A: Substitution is valid when the following parameters match: Number of Drivers/Receivers (0/4), Receiver Hysteresis (120 mV), Supply Voltage Range (4.75V ~ 5.25V), Operating Temperature Range (0°C ~ 70°C), and Base Product Number (75ALS197).

Q: Why is the SN75ALS197N classified as obsolete?

A: Product status reflects Texas Instruments' lifecycle management. The SN75ALS197DR, with identical specifications and active status, represents the current production equivalent.

Q: Are there compliance differences between the two parts?

A: No. Both parts are ROHS3 Compliant, REACH Unaffected, and carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What packaging format differences exist?

A: The SN75ALS197N uses 16-DIP (0.300", 7.62mm) through-hole packaging. The SN75ALS197DR uses 16-SOIC (0.154", 3.90mm Width) surface-mount packaging supplied in tape & reel format.