SN74LS194ADRE4 Equivalent & Substitute Parts

Part Overview

The SN74LS194ADRE4 is a bidirectional universal shift register IC manufactured by Texas Instruments, designed for 4-bit parallel data manipulation with shift capabilities in both directions. This component operates within the 74LS logic family and is housed in a 16-SOIC surface mount package.

The SN74LS194ADRE4 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

SN74LS194ADRE4

Texas InstrumentsIn Stock: 903SN74LS194ADRE4 Datasheet

Current PartRFQ

SN74LS194AD

Texas InstrumentsIn Stock: 1051SN74LS194AD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS194ADRE4 is determined by strict equivalence across the following critical parameters:

• Logic Type: Register, Bidirectional
• Number of Elements: 1
• Number of Bits per Element: 4
• Function: Universal
• Output Type: Push-Pull
• Voltage - Supply: 4.75V ~ 5.25V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Series: 74LS

The SN74LS194AD qualifies as a direct substitute based on identical electrical specifications, functional characteristics, and physical packaging. The primary distinction is product status: the substitute part maintains Active status, providing ongoing availability and supply chain support.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS194AD is the appropriate substitute for the SN74LS194ADRE4. Both parts are manufactured by Texas Instruments and maintain identical electrical and functional specifications. The substitute part carries Active product status, ensuring continued availability and supply chain support compared to the Obsolete status of the main part.

Both parts satisfy ROHS3 compliance requirements and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, indicating equivalent environmental handling and storage characteristics. The packaging, mounting type, and physical dimensions are identical, permitting direct board-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS194AD be used as a direct replacement for the SN74LS194ADRE4?

A: Yes. Both parts are identical in electrical specifications, logic function, output characteristics, supply voltage range, operating temperature range, and physical packaging. The SN74LS194AD is the Active equivalent of the Obsolete SN74LS194ADRE4.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. The SN74LS194ADRE4 is Obsolete, while the SN74LS194AD is Active. Both parts share identical functional and electrical parameters. The packaging designation differs slightly (ADRE4 vs. AD), but the physical package remains 16-SOIC.

Q: Are there any compatibility concerns when substituting the SN74LS194AD for the SN74LS194ADRE4?

A: No compatibility concerns exist. Both parts operate within the same voltage range (4.75V ~ 5.25V), temperature range (0°C ~ 70°C), and provide identical logic functionality. Pin configuration, package dimensions, and electrical performance are equivalent.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SN74LS194ADRE4 and SN74LS194AD are ROHS3 compliant and carry MSL Level 1 (Unlimited) ratings. Compliance certifications are equivalent.

Q: Is the SN74LS194AD available in the same packaging format?

A: Yes. The SN74LS194AD is supplied in 16-SOIC surface mount packaging with identical physical dimensions (0.154", 3.90mm Width) as the SN74LS194ADRE4.