CD74HC112NS Equivalent & Substitute Parts

Part Overview

The CD74HC112NS is a dual JK-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This device functions as a 2-element, 1-bit per element flip-flop with complementary outputs, triggered on negative edge clock transitions. The CD74HC112NS is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this logic component.

Substiute Parts

CD74HC112NS

Texas InstrumentsIn Stock: 1004CD74HC112NS Datasheet

Current PartRFQ

CD74HC112NSR

Texas InstrumentsIn Stock: 2787CD74HC112NSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC112NS is determined by strict equivalence across the following critical parameters:

Functional Parameters:

• JK-type flip-flop architecture with 2 elements, 1 bit per element
• Complementary output configuration
• Negative edge trigger mechanism
• Clock frequency specification of 60 MHz
• Propagation delay of 30 ns @ 6V, 50pF load

Electrical Parameters:

• Supply voltage range: 2V to 6V
• Output current capability: 5.2 mA (both high and low states)
• Quiescent current: 4 µA
• Input capacitance: 10 pF
• Operating temperature range: -55°C to 125°C

Physical & Compliance Parameters:

• 16-SOIC surface mount package (0.209", 5.30mm width)
• ROHS3 compliance
• Moisture Sensitivity Level 1

Substitute parts must maintain identical specifications across all listed parameters. Packaging format differences (tube versus tape & reel) do not affect functional equivalence but impact supply and handling logistics.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC112NSR serves as the direct functional equivalent to the CD74HC112NS. All electrical, functional, and mechanical parameters are identical. The primary distinction is product status: the CD74HC112NS is Last Time Buy (discontinued), while the CD74HC112NSR maintains Active status with Texas Instruments.

Selection Basis:

The CD74HC112NSR is the appropriate substitute for new designs and ongoing production requirements. This part maintains full compatibility with existing circuit designs utilizing the CD74HC112NS, as all performance specifications, pin configurations, and package dimensions are equivalent.

The packaging format difference (Tape & Reel for CD74HC112NSR versus tube packaging for CD74HC112NS) affects supply chain logistics and handling procedures but does not impact electrical or mechanical compatibility. ROHS3 compliance and Moisture Sensitivity Level 1 certification are maintained in the substitute part.

For applications currently using CD74HC112NS, transition to CD74HC112NSR is supported by identical specifications across all critical parameters: clock frequency, propagation delay, supply voltage range, output current capability, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can CD74HC112NSR be used as a direct replacement for CD74HC112NS in existing designs?

A: Yes. The CD74HC112NSR is electrically and mechanically identical to the CD74HC112NS. All functional parameters, electrical specifications, package dimensions, and pin configurations are equivalent. No circuit modifications are required.

Q: What is the difference between CD74HC112NS and CD74HC112NSR?

A: The primary differences are product status and packaging format. The CD74HC112NS is Last Time Buy (discontinued production), while CD74HC112NSR is Active. The CD74HC112NS is supplied in tube packaging; the CD74HC112NSR is supplied in Tape & Reel format. All electrical and functional specifications are identical.

Q: Are there any compatibility concerns with the 16-SOIC package?

A: No. Both parts use the identical 16-SOIC (0.209", 5.30mm width) surface mount package. PCB footprints, solder pad layouts, and component placement are fully compatible.

Q: Does the CD74HC112NSR meet the same compliance standards as the CD74HC112NS?

A: Yes. The CD74HC112NSR maintains ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) certification, identical to the CD74HC112NS. Both parts carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the significance of the "Last Time Buy" status for CD74HC112NS?

A: Last Time Buy indicates that Texas Instruments has discontinued production of the CD74HC112NS. Existing inventory may be limited. The CD74HC112NSR, with Active status, represents the current production equivalent and is recommended for new designs and ongoing supply requirements.

Q: Are the electrical performance characteristics identical between these parts?

A: Yes. Clock frequency (60 MHz), propagation delay (30 ns @ 6V, 50pF), supply voltage range (2V to 6V), output current (5.2 mA), quiescent current (4 µA), and operating temperature range (-55°C to 125°C) are identical.

Q: Does packaging format (tube vs. Tape & Reel) affect circuit performance?

A: No. Packaging format affects supply chain logistics, handling, and automated assembly processes but does not impact electrical performance or functional characteristics. The component itself is identical.