SN75ALS199DR Equivalent & Substitute Parts

Part Overview

The SN75ALS199DR is a 0/4 Receiver interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as obsolete, indicating it has been discontinued and is no longer in active production. Finding equivalent and substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity. Substitute parts must maintain electrical compatibility across supply voltage, receiver hysteresis, operating temperature range, and package specifications.

Substiute Parts

SN75ALS199DR

Texas InstrumentsIn Stock: 2193SN75ALS199DR 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 for the SN75ALS199DR is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use the 16-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB layout compatibility without redesign.
• Electrical Specifications: Supply voltage range (4.75V ~ 5.25V) and receiver hysteresis characteristics must be compatible with the original circuit design.
• Number of Drivers/Receivers: All substitutes maintain the 0/4 configuration (0 drivers, 4 receivers).
• Mounting Type: Surface mount technology is required for all alternatives.
• Compliance Standards: RoHS3 compliance and MSL rating of 1 (Unlimited) are maintained across all substitute options.

The substitute parts listed below meet these criteria and are available from Texas Instruments in active production status, providing improved availability compared to the obsolete SN75ALS199DR.

Parameter Comparison

Engineering Selection Recommendations

SN65LBC175ADR is the manufacturer-recommended primary substitute. This part is in active production status, ensuring long-term availability and supply chain stability. It supports RS422, RS423, and RS485 protocols with a 50 Mbps data rate capability, extending functional scope beyond the original SN75ALS199DR. The extended operating temperature range (-40°C ~ 85°C) provides broader environmental compatibility. The lower receiver hysteresis of 40 mV offers improved noise immunity in signal detection. This part is available in Cut Tape (CT) and Digi-Reel® packaging formats.

DS3486M/NOPB and DS3486MX/NOPB are alternative active production substitutes with identical operating temperature specifications (0°C ~ 70°C) matching the original part. Both support RS422 and RS423 protocols. The DS3486M/NOPB is supplied in Tube packaging, while DS3486MX/NOPB is available in Cut Tape (CT) and Digi-Reel® formats. The receiver hysteresis of 140 mV is slightly higher than the original 120 mV specification. These parts maintain full electrical and mechanical compatibility with the SN75ALS199DR footprint and supply voltage requirements.

All three substitute options maintain ROHS3 compliance and MSL rating of 1 (Unlimited), ensuring compatibility with modern manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can SN65LBC175ADR be used as a direct replacement for SN75ALS199DR?

A: Yes. Both parts share identical package geometry (16-SOIC), supply voltage range (4.75V ~ 5.25V), and receiver configuration (0/4). The SN65LBC175ADR is the manufacturer-recommended substitute and is in active production. The extended operating temperature range and additional protocol support (RS422, RS423, RS485) make it functionally compatible and superior for new designs.

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

A: Both parts are electrically identical with the same receiver hysteresis (140 mV), operating temperature range (0°C ~ 70°C), and protocol support (RS422, RS423). The primary difference is packaging: DS3486M/NOPB is supplied in Tube format, while DS3486MX/NOPB is supplied in Cut Tape (CT) and Digi-Reel® format. Selection depends on procurement and assembly requirements.

Q: How does receiver hysteresis affect substitution compatibility?

A: Receiver hysteresis determines the voltage differential required for signal state transitions. The SN75ALS199DR specifies 120 mV hysteresis. Substitutes with different hysteresis values (SN65LBC175ADR at 40 mV, DS3486M/NOPB and DS3486MX/NOPB at 140 mV) remain electrically compatible within the 4.75V ~ 5.25V supply voltage range. Circuit performance may vary slightly in noise-sensitive applications, but all parts meet the 16-SOIC package and supply voltage requirements for direct substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (SN65LBC175ADR, DS3486M/NOPB, DS3486MX/NOPB) maintain ROHS3 compliance and MSL rating of 1 (Unlimited), meeting current environmental and manufacturing standards.

Q: What packaging options are available for these substitutes?

A: SN65LBC175ADR is available in Cut Tape (CT) and Digi-Reel® packaging. DS3486M/NOPB is supplied in Tube format. DS3486MX/NOPB is available in Cut Tape (CT) and Digi-Reel® format. Packaging selection should align with assembly line requirements and procurement volume.