CD74HCT368M Equivalent & Substitute Parts

Part Overview

The CD74HCT368M is a Buffer, Inverting logic IC manufactured by Texas Instruments, designed for 5.5V operation in a 16-SOIC surface mount package. This component features 2 elements with 2 and 4 (Hex) bit configurations per element, delivering 3-state output capability with 4mA output current ratings. The part is currently in Last Time Buy status, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

CD74HCT368M

Texas InstrumentsIn Stock: 2325CD74HCT368M Datasheet

Current PartRFQ

CD74HCT368M96

Texas InstrumentsIn Stock: 1501CD74HCT368M96 Datasheet

MFR RecommendedRFQ

74HCT257D,652

Nexperia USA Inc.In Stock: 97774HCT257D,652 Datasheet

MFR RecommendedRFQ

74HCT368D,653

Nexperia USA Inc.In Stock: 367874HCT368D,653 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD74HCT368M are identified based on strict alignment with the following critical parameters:

• Logic Type: Buffer, Inverting
• Number of Elements: 2
• Number of Bits per Element: 2, 4 (Hex)
• Output Type: 3-State
• Voltage - Supply: 4.5V ~ 5.5V
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitutes are grouped into two categories:

Category 1: Direct Packaging Variant (Tape & Reel) CD74HCT368M96 maintains identical electrical specifications and logic configuration as the main part, with the only difference being packaging format (Tape & Reel vs. Tube). This part is suitable for high-volume production environments.

Category 2: Functional Equivalent with Packaging Variant 74HCT368D,653 (Nexperia USA Inc.) provides the same logic type, element count, bit configuration, and 3-state output capability. Output current ratings increase to 6mA (vs. 4mA), and operating temperature range narrows to -40°C ~ 125°C. Packaging is 16-SO (Tape & Reel). This part is Active status.

Category 3: Different Logic Function (Not Recommended for Direct Substitution) 74HCT257D,652 (Nexperia USA Inc.) is a Multiplexer (4 x 2:1) with different logic function, element configuration, and circuit topology. This part does not meet substitution criteria for the Buffer, Inverting application and is listed as Obsolete.

Parameter Comparison

Engineering Selection Recommendations

Recommended Primary Substitute: CD74HCT368M96

CD74HCT368M96 is the optimal substitute for CD74HCT368M. Both parts are manufactured by Texas Instruments, share identical electrical specifications, logic configuration, and operating parameters. The only difference is packaging format (Tape & Reel vs. Tube). This part maintains Active product status and full ROHS3 compliance with MSL 1 rating. Selection of this part eliminates supply chain risk associated with the Last Time Buy status of the main part.

Secondary Substitute: 74HCT368D,653

74HCT368D,653 (Nexperia USA Inc.) provides functional equivalence with the same Buffer, Inverting logic type, 2-element configuration, and 2/4-bit per element specification. Output current capability increases to 6mA (vs. 4mA), providing enhanced drive capability. Operating temperature range is -40°C ~ 125°C (vs. -55°C ~ 125°C), which may be acceptable for applications not requiring extended low-temperature operation. This part is Active status with full ROHS3 compliance and MSL 1 rating. Packaging is 16-SO in Tape & Reel format.

Not Recommended: 74HCT257D,652

74HCT257D,652 is a Multiplexer with fundamentally different logic function and circuit topology. This part does not meet substitution criteria for Buffer, Inverting applications and carries Obsolete product status. This part is unsuitable for direct replacement.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT368M96 be used as a direct replacement for CD74HCT368M?

A: Yes. CD74HCT368M96 is a direct electrical and functional equivalent. Both parts are manufactured by Texas Instruments with identical logic type, element count, bit configuration, output type, supply voltage, and operating temperature range. The only difference is packaging format (Tape & Reel vs. Tube). Selection depends on procurement and assembly requirements.

Q: What are the key differences between CD74HCT368M and 74HCT368D,653?

A: Both parts provide Buffer, Inverting logic with 2 elements and 2/4-bit per element configuration. Key differences are: (1) Manufacturer (Texas Instruments vs. Nexperia USA Inc.), (2) Output current (4mA vs. 6mA), (3) Operating temperature range (-55°C ~ 125°C vs. -40°C ~ 125°C), and (4) Packaging format (Tube vs. Tape & Reel). The 74HCT368D,653 offers higher output current capability and is Active status.

Q: Why is 74HCT257D,652 listed but not recommended?

A: 74HCT257D,652 is a Multiplexer (4 x 2:1), not a Buffer, Inverting circuit. It has different logic function, element configuration, and circuit topology. This part does not meet the functional requirements for Buffer, Inverting applications and is Obsolete. It is not suitable for direct substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. CD74HCT368M, CD74HCT368M96, 74HCT368D,653, and 74HCT257D,652 are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the significance of Last Time Buy status for CD74HCT368M?

A: Last Time Buy status indicates that the manufacturer will no longer produce this part after a specified date. Existing inventory may be available, but long-term supply cannot be guaranteed. Selection of an Active status substitute (CD74HCT368M96 or 74HCT368D,653) is recommended for designs requiring extended production support.

Q: Can I use 74HCT368D,653 in applications requiring -55°C operation?

A: No. 74HCT368D,653 has a minimum operating temperature of -40°C. Applications requiring operation at -55°C must use CD74HCT368M or CD74HCT368M96, which support -55°C ~ 125°C range.

Q: Are there pin-to-pin compatibility considerations between these parts?

A: All recommended substitutes (CD74HCT368M96 and 74HCT368D,653) use 16-SOIC packaging with identical pinout. Pin-to-pin compatibility is maintained. PCB layout and footprint modifications are not required.