SN75155DRE4 Equivalent & Substitute Parts

Part Overview

The SN75155DRE4 is a full-duplex RS232 transceiver manufactured by Texas Instruments, designed for serial communication interface applications. This device integrates one driver and one receiver in an 8-SOIC surface mount package. The SN75155DRE4 is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing production, maintenance, and design updates. Equivalent parts maintain identical electrical and mechanical specifications while offering improved availability or alternative packaging options.

Substiute Parts

SN75155DRE4

Texas InstrumentsIn Stock: 1261SN75155DRE4 Datasheet

Current PartRFQ

SN75155DR

Texas InstrumentsIn Stock: 4626SN75155DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The SN75155DR qualifies as a parametric equivalent to the SN75155DRE4 based on the following criteria:

Electrical Equivalence: Both parts share identical RS232 protocol specifications, 1/1 driver/receiver configuration, full-duplex operation, 600 mV receiver hysteresis, 4.5V to 15V supply voltage range, and 0°C to 70°C operating temperature range.

Mechanical Equivalence: Both parts use the 8-SOIC surface mount package with identical physical dimensions (0.154" width, 3.90mm).

Compliance Equivalence: Both parts maintain ROHS3 compliance, MSL Level 1 rating, and identical REACH and ECCN classifications.

Differentiation: The primary distinction is product status and packaging format. The SN75155DRE4 is discontinued, while the SN75155DR remains active with expanded packaging availability (Cut Tape and Digi-Reel options).

Parameter Comparison

Engineering Selection Recommendations

The SN75155DR is the direct substitute for the SN75155DRE4. Both parts are manufactured by Texas Instruments and maintain identical electrical, mechanical, and compliance specifications. The SN75155DR is recommended for new designs and production continuity due to its active product status and improved inventory availability (4600 units in stock versus 1195 units for the discontinued SN75155DRE4). Both parts satisfy ROHS3 compliance requirements and carry identical REACH and ECCN classifications, ensuring regulatory compatibility across applications. The SN75155DR offers additional packaging flexibility through Cut Tape and Digi-Reel options, supporting various procurement and assembly workflows.

Frequently Asked Questions (FAQ)

Q: Can the SN75155DR directly replace the SN75155DRE4 in existing designs?

A: Yes. The SN75155DR is electrically and mechanically identical to the SN75155DRE4. Both parts operate with the same RS232 protocol, 1/1 driver/receiver configuration, supply voltage range (4.5V ~ 15V), and temperature specifications (0°C ~ 70°C). No circuit modifications are required.

Q: What is the difference between SN75155DRE4 and SN75155DR?

A: The primary difference is product status and packaging availability. The SN75155DRE4 is discontinued, while the SN75155DR remains active. The SN75155DR offers Cut Tape and Digi-Reel packaging options in addition to standard formats. All electrical and mechanical parameters are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the SN75155DRE4 and SN75155DR are ROHS3 compliant with MSL Level 1 rating (unlimited moisture sensitivity protection).

Q: Does the package size remain the same?

A: Yes. Both parts use the 8-SOIC surface mount package with identical dimensions (0.154" width, 3.90mm). PCB footprints and assembly processes require no modification.

Q: Which part should be specified for new production?

A: The SN75155DR should be specified for new designs and ongoing production. It maintains all functional equivalence to the SN75155DRE4 while offering active product status and superior inventory availability.