CD74AC112M Equivalent & Substitute Parts

Part Overview

The CD74AC112M is a dual JK-type flip-flop logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This component functions as a 2-element JK flip-flop with complementary outputs, negative edge triggering, and preset/reset capabilities. The main part number is currently in Last Time Buy status with 1,413 pieces in stock. Alternative part numbers are necessary due to product lifecycle transitions and packaging availability variations across distribution channels.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD74AC112M
Manufacturer	Texas Instruments
Logic Type	JK Flip-Flop, Dual 1-Bit
Package	16-SOIC (0.154", 3.90mm Width)
Clock Frequency	100 MHz
Propagation Delay	10.3 ns @ 5V, 50pF
Supply Voltage Range	1.5V – 5.5V
Output Current (High/Low)	24 mA / 24 mA
Quiescent Current	4 µA
Operating Temperature	-55°C to 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the CD74AC112M is determined by the following critical parameters:

Logic Function: Dual JK-type flip-flop with complementary outputs and negative edge triggering
Package Type: 16-SOIC surface mount form factor
Electrical Performance: 100 MHz clock frequency, 10.3 ns propagation delay at 5V/50pF load
Supply Voltage Compatibility: 1.5V – 5.5V operating range
Output Drive Capability: 24 mA source and sink current
Temperature Range: -55°C to 125°C operation
Compliance: ROHS3, MSL Level 1, REACH Unaffected

The identified substitute parts maintain functional equivalence and electrical compatibility within these parameters. Packaging variations (tube versus cut tape/reel) do not affect electrical performance but may impact procurement and handling workflows.

Parameter Comparison

Parameter	CD74AC112M (Main)	CD74AC112M96 (Substitute)	MC74AC11DR2G (Substitute)
Manufacturer	Texas Instruments	Texas Instruments	onsemi
Logic Type	JK Flip-Flop, Dual 1-Bit	JK Flip-Flop, Dual 1-Bit	AND Gate, 3-Channel
Package	16-SOIC	16-SOIC	14-SOIC
Clock Frequency / Max Delay	100 MHz / 10.3 ns @ 5V, 50pF	100 MHz / 10.3 ns @ 5V, 50pF	N/A / 8 ns @ 5V, 50pF
Supply Voltage Range	1.5V – 5.5V	1.5V – 5.5V	2V – 6V
Output Current (High/Low)	24 mA / 24 mA	24 mA / 24 mA	24 mA / 24 mA
Quiescent Current	4 µA	4 µA	4 µA
Operating Temperature	-55°C to 125°C	-55°C to 125°C	-40°C to 85°C
Product Status	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

CD74AC112M96 is the primary equivalent substitute. This part maintains identical electrical specifications, logic function, package footprint, and temperature range as the main part number. The only difference is packaging format (cut tape/Digi-Reel versus tube) and active product status, making it suitable for direct replacement in new designs and production runs.

MC74AC11DR2G is not functionally equivalent. This part is a 3-channel AND gate logic circuit, not a JK flip-flop. While it shares the 74AC logic family, SOIC package family, and common electrical characteristics (output current, quiescent current, RoHS compliance), it performs a different logic function and cannot substitute for JK flip-flop applications. The operating temperature range is also narrower (-40°C to 85°C versus -55°C to 125°C). This part is listed in the provided data but does not meet substitution criteria for the CD74AC112M.

For applications requiring the CD74AC112M, use CD74AC112M96 as the direct substitute. Verify circuit design requirements before considering alternative logic families.

Frequently Asked Questions (FAQ)

Q: Can CD74AC112M96 replace CD74AC112M in existing designs?

A: Yes. CD74AC112M96 is electrically and functionally identical to CD74AC112M. Both are dual JK flip-flops in 16-SOIC packages with identical electrical specifications, temperature ranges, and compliance certifications. The difference is packaging format (cut tape/reel versus tube) and product lifecycle status (active versus last time buy).

Q: What is the difference between tube and cut tape packaging?

A: Tube packaging ships components in plastic tubes suitable for manual handling and small-quantity assembly. Cut tape and Digi-Reel packaging provides components on continuous tape suitable for automated pick-and-place equipment. Electrical performance and component specifications are identical. Selection depends on assembly process requirements.

Q: Why is MC74AC11DR2G listed as a substitute if it is not functionally equivalent?

A: MC74AC11DR2G is not a functional substitute for the CD74AC112M. This part is a 3-channel AND gate, not a JK flip-flop. It cannot perform the same logic operations. The part was included in the provided data but does not meet substitution criteria. Do not use this part for CD74AC112M applications.

Q: Are there temperature range limitations when substituting CD74AC112M96?

A: No. CD74AC112M96 maintains the full -55°C to 125°C operating temperature range of the original CD74AC112M. Both parts are rated for identical temperature specifications.

Q: What compliance certifications apply to substitute parts?

A: Both CD74AC112M and CD74AC112M96 are ROHS3 compliant, MSL Level 1 (unlimited moisture sensitivity), and REACH unaffected. These certifications are identical across both parts.

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