SN75ALS199D Equivalent & Substitute Parts

Part Overview

The SN75ALS199D is a 0/4 Receiver interface IC in 16-SOIC packaging manufactured by Texas Instruments. This component is classified as obsolete, which necessitates identification of active alternative parts that maintain functional and electrical compatibility. The SN75ALS199D operates within a 4.75V to 5.25V supply voltage range and is designed for surface mount applications with a receiver hysteresis of 120 mV and operating temperature range of 0°C to 70°C.

Substiute Parts

SN75ALS199D

Texas InstrumentsIn Stock: 797SN75ALS199D Datasheet

Current PartRFQ

SN65LBC175ADR

Texas InstrumentsIn Stock: 3102SN65LBC175ADR Datasheet

MFR RecommendedRFQ

DS3486M/NOPB

Texas InstrumentsIn Stock: 6122DS3486M/NOPB Datasheet

MFR RecommendedRFQ

DS3486MX/NOPB

Texas InstrumentsIn Stock: 1579DS3486MX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75ALS199D is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use 16-SOIC (0.154", 3.90mm Width) surface mount packaging
• Electrical Configuration: 0/4 Receiver architecture with matching driver/receiver count
• Supply Voltage: 4.75V ~ 5.25V operating range
• Receiver Hysteresis: Acceptable range based on application requirements (120 mV baseline)
• Compliance: ROHS3 compliance and MSL 1 rating maintained across all substitutes
• Product Status: Active alternatives are prioritized due to obsolete status of main part

The identified substitute parts maintain these core parameters while offering enhanced specifications in certain areas such as extended operating temperature ranges, higher data rates, and additional protocol support.

Parameter Comparison

Engineering Selection Recommendations

SN65LBC175ADR is the manufacturer-recommended primary substitute. This part maintains all core electrical and mechanical compatibility parameters while offering extended operating temperature range (-40°C to 85°C), higher data rate capability (50 Mbps), and active product status. The reduced receiver hysteresis (40 mV versus 120 mV) provides improved noise margin performance. This part is suitable for applications requiring enhanced temperature performance and higher-speed data transmission.

DS3486M/NOPB and DS3486MX/NOPB are functionally equivalent alternatives with identical operating temperature range (0°C to 70°C) matching the original part. Both maintain the same 16-SOIC package and electrical supply specifications. The DS3486M/NOPB is supplied in Tube packaging, while DS3486MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. These parts support RS422 and RS423 protocols and feature slightly elevated receiver hysteresis (140 mV). Selection between these variants depends on packaging and inventory requirements.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can SN65LBC175ADR be used as a direct replacement for SN75ALS199D?

A: Yes. Both parts share identical 16-SOIC packaging, 0/4 receiver configuration, and 4.75V to 5.25V supply voltage specifications. The SN65LBC175ADR is the manufacturer-recommended substitute and offers enhanced specifications including extended temperature range and higher data rate capability.

Q: What is the difference between DS3486M/NOPB and DS3486MX/NOPB?

A: Both parts are electrically identical with matching receiver hysteresis (140 mV), operating temperature range (0°C to 70°C), and 16-SOIC packaging. The primary difference is packaging format: DS3486M/NOPB is supplied in Tube, while DS3486MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly line requirements and inventory management preferences.

Q: How does receiver hysteresis affect part selection?

A: Receiver hysteresis determines the voltage differential required for signal transitions. The SN75ALS199D specifies 120 mV hysteresis. Substitute parts offer 40 mV (SN65LBC175ADR) or 140 mV (DS3486 variants). Lower hysteresis improves noise immunity in clean signal environments, while higher hysteresis may be preferred in noisy applications. Application-specific signal integrity analysis determines the acceptable hysteresis range.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) rating, matching the original SN75ALS199D specifications.

Q: What is the significance of the obsolete product status?

A: The SN75ALS199D is classified as obsolete, meaning Texas Instruments no longer manufactures this part. Substitute parts listed are active products with ongoing manufacturing support, ensuring long-term availability and supply chain reliability.