74F112SJ Equivalent & Substitute Parts

Part Overview

The 74F112SJ is a dual JK-type flip-flop logic integrated circuit manufactured by onsemi, housed in a 16-SOIC surface mount package. This component provides two independent 1-bit JK flip-flops with complementary outputs, set/preset and reset functionality, and negative edge triggering. The 74F112SJ is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

74F112SJ

onsemiIn Stock: 82374F112SJ Datasheet

Current PartRFQ

SN74F112NSR

Texas InstrumentsIn Stock: 4301SN74F112NSR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F112SJ is determined by strict equivalence across the following critical parameters:

• Functional type: Dual JK-type flip-flop with 1-bit per element
• Output configuration: Complementary outputs
• Trigger mechanism: Negative edge triggering
• Control functions: Set (Preset) and Reset capability
• Package format: 16-SOIC surface mount
• Electrical specifications: Supply voltage 4.5V ~ 5.5V, propagation delay 6.5 ns @ 5V/50pF, output current ratings 1 mA / 20 mA
• Operating temperature range: 0°C ~ 70°C

The SN74F112NSR from Texas Instruments meets all these criteria and is classified as an active product, providing direct functional and electrical compatibility with the obsolete 74F112SJ.

Parameter Comparison

Engineering Selection Recommendations

The SN74F112NSR is a direct substitute for the 74F112SJ. Both components share identical functional specifications, electrical parameters, and package geometry. The SN74F112NSR offers the advantage of active product status, ensuring continued availability and manufacturing support. The SN74F112NSR additionally carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. The higher clock frequency specification (130 MHz vs. 105 MHz) of the SN74F112NSR provides additional performance margin without compromising backward compatibility. Both components maintain identical propagation delay, output current ratings, and supply voltage specifications, confirming direct pin-for-pin and functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the SN74F112NSR replace the 74F112SJ in existing designs?

A: Yes. The SN74F112NSR is functionally and electrically equivalent to the 74F112SJ. Both components feature identical JK flip-flop architecture, complementary outputs, negative edge triggering, propagation delay specifications, output current ratings, and 16-SOIC package geometry. No design modifications are required.

Q: What is the primary reason to substitute the 74F112SJ?

A: The 74F112SJ is classified as obsolete. The SN74F112NSR from Texas Instruments is an active product with guaranteed availability and manufacturing support, making it the appropriate choice for new designs and production continuity.

Q: Are there package compatibility concerns?

A: No. Both the 74F112SJ and SN74F112NSR use the 16-SOIC (0.209", 5.30mm Width) surface mount package. Pin assignments, footprint dimensions, and mounting requirements are identical.

Q: Does the SN74F112NSR meet current compliance standards?

A: Yes. The SN74F112NSR carries ROHS3 compliance certification and maintains MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and regulatory requirements.

Q: Are there performance differences between the two parts?

A: The SN74F112NSR specifies a maximum clock frequency of 130 MHz compared to 105 MHz for the 74F112SJ. Propagation delay, output current, and supply voltage specifications remain identical. This represents improved performance margin with no negative impact on compatibility.