SN74LS194ADR Equivalent & Substitute Parts

Part Overview

The SN74LS194ADR is a bidirectional universal shift register IC manufactured by Texas Instruments, featuring 1 element with 4 bits per element in a 16-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design requirements and production continuity. The SN74LS194ADR operates within a supply voltage range of 4.75V to 5.25V and is rated for operating temperatures from 0°C to 70°C.

Substiute Parts

SN74LS194ADR

Texas InstrumentsIn Stock: 1005SN74LS194ADR Datasheet

Current PartRFQ

SN74LS194AD

Texas InstrumentsIn Stock: 1051SN74LS194AD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LS194ADR are identified based on 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)
• Mounting Type: Surface Mount
• Series: 74LS

The SN74LS194AD qualifies as a direct substitute, maintaining identical electrical specifications, logic configuration, and physical packaging while differing only in product status (Active vs. Obsolete) and packaging format (Tube vs. unspecified).

Parameter Comparison

Engineering Selection Recommendations

The SN74LS194AD is a direct functional and electrical equivalent to the SN74LS194ADR. Both components are manufactured by Texas Instruments, share identical logic specifications, and are packaged in the same 16-SOIC form factor. The primary distinction is product status: the SN74LS194ADR is classified as obsolete, while the SN74LS194AD maintains active status with current manufacturing support.

Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring compatibility with modern manufacturing and environmental standards. The SN74LS194AD is suitable for direct substitution in applications currently specified for the SN74LS194ADR.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS194AD be used as a direct replacement for the SN74LS194ADR?

A: Yes. Both components are electrically and functionally identical, with matching logic type, bit configuration, voltage specifications, operating temperature range, and 16-SOIC packaging. The SN74LS194AD differs only in product status (Active vs. Obsolete) and packaging format.

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

A: Substitution is determined by equivalence in logic type (Register, Bidirectional), element and bit configuration (1 element, 4 bits), function (Universal), output type (Push-Pull), supply voltage (4.75V ~ 5.25V), operating temperature range (0°C ~ 70°C), and physical package (16-SOIC surface mount).

Q: Are there any compliance or certification differences between these parts?

A: No. Both the SN74LS194ADR and SN74LS194AD are ROHS3 compliant with identical moisture sensitivity levels (MSL 1 - Unlimited), ensuring equivalent environmental and regulatory compliance.

Q: Does packaging format affect compatibility?

A: Packaging format (Tube vs. other formats) does not affect electrical or mechanical compatibility. Both parts use the same 16-SOIC package and mounting type, ensuring identical PCB integration and performance characteristics.