CD74AC14M Equivalent & Substitute Parts

Part Overview

The CD74AC14M is a 6-channel inverter IC with Schmitt trigger functionality in a 14-SOIC surface mount package, manufactured by Texas Instruments. This logic component is designed for signal conditioning and inversion applications requiring hysteresis input characteristics. The CD74AC14M is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. Substitute parts must maintain functional equivalence across logic type, circuit count, input/output characteristics, and package form factor while meeting the same environmental and compliance standards.

Substiute Parts

CD74AC14M

Texas InstrumentsIn Stock: 1797CD74AC14M Datasheet

Current PartRFQ

CD74AC14M96

Texas InstrumentsIn Stock: 4544CD74AC14M96 Datasheet

DirectRFQ

74AC14SC

onsemiIn Stock: 230274AC14SC Datasheet

DirectRFQ

74AC14SCX

onsemiIn Stock: 885074AC14SCX Datasheet

MFR RecommendedRFQ

MC74AC14DG

onsemiIn Stock: 1831MC74AC14DG Datasheet

MFR RecommendedRFQ

MC74AC14DR2G

onsemiIn Stock: 20615MC74AC14DR2G Datasheet

MFR RecommendedRFQ

TC74AC14F(EL,F)

Toshiba Semiconductor and StorageIn Stock: 3757TC74AC14F(EL,F) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD74AC14M are grouped based on strict electrical and mechanical compatibility criteria. All substitute parts must maintain the following core parameters:

• Logic type: Inverter with 6 channels and 6 inputs
• Schmitt trigger feature for hysteresis input conditioning
• Surface mount 14-SOIC package form factor (0.154", 3.90mm width)
• Output drive capability: 24mA high and low
• RoHS3 compliance and MSL 1 rating
• Base product number: 74AC14

Substitutes are differentiated by packaging format (Tube vs. Tape & Reel), manufacturer, and minor variations in electrical specifications within acceptable operating ranges. The CD74AC14M96 represents a direct Texas Instruments equivalent with identical electrical specifications but in Tape & Reel packaging. onsemi parts (74AC14SC, 74AC14SCX, MC74AC14DG, MC74AC14DR2G) provide functional equivalence with slightly relaxed supply voltage range (2V ~ 6V vs. 1.5V ~ 5.5V) and lower quiescent current in some variants. The TC74AC14F(EL,F) from Toshiba offers equivalent functionality in a 14-SOP package variant with marginally improved propagation delay.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - CD74AC14M96 (Texas Instruments) The CD74AC14M96 is the direct equivalent to the CD74AC14M, manufactured by the same supplier with identical electrical specifications and operating temperature range. The only difference is packaging format (Tape & Reel vs. Tube). This part is currently active and recommended for applications requiring exact specification matching and Texas Instruments sourcing continuity.

Alternative Substitutes - onsemi Parts (74AC14SC, 74AC14SCX, MC74AC14DG, MC74AC14DR2G) onsemi-manufactured 74AC14 variants provide functional equivalence with active product status. These parts feature a wider supply voltage range (2V ~ 6V) and lower quiescent current in some variants (2 µA for 74AC14SC/74AC14SCX). Operating temperature range is narrower (-40°C ~ 85°C vs. -55°C ~ 125°C). Selection between Tube and Tape & Reel packaging variants depends on assembly requirements. MC74AC14DR2G offers the highest inventory availability (20,600 pcs).

Alternative Substitute - TC74AC14F(EL,F) (Toshiba) The TC74AC14F(EL,F) from Toshiba provides functional equivalence with marginally improved propagation delay (9.7ns vs. 10.5ns). The package footprint differs slightly (0.209" vs. 0.154" width), requiring PCB layout verification. This part is suitable for applications where the wider package footprint is accommodated and Toshiba sourcing is acceptable.

Compliance Considerations All substitute parts maintain RoHS compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements. Applications requiring the extended operating temperature range of the original CD74AC14M (-55°C ~ 125°C) must use CD74AC14M96 or verify that onsemi and Toshiba variants meet specific temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can I use CD74AC14M96 as a direct replacement for CD74AC14M? A: Yes. CD74AC14M96 is electrically and functionally identical to CD74AC14M. The only difference is packaging format (Tape & Reel vs. Tube). Both are 14-SOIC surface mount packages with identical pinout and specifications.

Q: What is the difference between Tube and Tape & Reel packaging? A: Tube packaging is used for manual assembly or small-volume applications, while Tape & Reel packaging is designed for automated pick-and-place assembly. The component itself is identical; only the delivery format differs. Select based on your assembly process requirements.

Q: Are onsemi 74AC14 parts compatible with the CD74AC14M? A: onsemi parts (74AC14SC, 74AC14SCX, MC74AC14DG, MC74AC14DR2G) are functionally compatible with identical logic function, circuit count, and package form factor. However, they have a narrower operating temperature range (-40°C ~ 85°C vs. -55°C ~ 125°C) and different input logic level thresholds. Verify your application's temperature requirements before substitution.

Q: Why do onsemi parts have different input logic level specifications? A: Input logic level thresholds (Low: 0.5V ~ 1.1V, High: 2.2V ~ 3.9V for onsemi vs. 1.6V and 3.4V for Texas Instruments) reflect different design margins within the 74AC14 standard. Both are valid for standard logic applications operating at 5V. Applications with marginal input signal levels should verify compatibility with actual signal characteristics.

Q: Can I use TC74AC14F(EL,F) in place of CD74AC14M? A: TC74AC14F(EL,F) provides functional equivalence with identical logic operation and pinout. However, the package width differs (0.209" vs. 0.154"), requiring PCB layout verification to ensure the component fits within the available footprint space. Verify mechanical compatibility before substitution.

Q: Which substitute part has the best availability? A: MC74AC14DR2G (onsemi, Tape & Reel) has the highest inventory at 20,600 pcs. CD74AC14M96 (Texas Instruments) has 4,498 pcs available. Inventory levels should be verified with your supplier for current availability.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts are RoHS compliant (ROHS3 or RoHS Compliant) with MSL 1 rating, meeting standard environmental and manufacturing requirements.

Q: What is the propagation delay difference between parts? A: Propagation delay ranges from 9.7ns (TC74AC14F) to 10.5ns (CD74AC14M/CD74AC14M96) at 5V with 50pF load. This 0.8ns difference is negligible for most applications. onsemi parts specify 10ns, which falls within the acceptable range.