74HCT126D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT126D,652 is a non-inverting buffer logic IC manufactured by Nexperia USA Inc., featuring 4 elements with 3-state output capability. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The 14-SOIC package and 5.5V supply voltage specification define the primary compatibility parameters for substitution.

Substiute Parts

74HCT126D,652

Nexperia USA Inc.In Stock: 114174HCT126D,652 Datasheet

Current PartRFQ

CD74HCT126M

Harris CorporationIn Stock: 7738CD74HCT126M Datasheet

UpgradeRFQ

CD74HCT126M96

Texas InstrumentsIn Stock: 4359CD74HCT126M96 Datasheet

UpgradeRFQ

MC74VHCT126ADR2G

onsemiIn Stock: 1152MC74VHCT126ADR2G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HCT126D,652 is determined by the following critical parameters:

• Logic Type: Buffer, Non-Inverting (4 elements, 1 bit per element)
• Output Type: 3-State
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Voltage - Supply: 4.5V ~ 5.5V
• Current - Output High, Low: 6mA minimum per channel

Substitute parts are classified into two categories:

Upgrade Substitutes maintain full electrical and mechanical compatibility with identical or superior specifications. These parts are direct replacements with no design modifications required.

Similar Substitutes share the same logic function and package but may have variations in output current, operating temperature range, or series designation. These require verification of application-specific requirements before implementation.

Parameter Comparison

Engineering Selection Recommendations

CD74HCT126M96 is the primary recommended substitute. This part is manufactured by Texas Instruments, maintains active product status, and is ROHS3 compliant. It provides identical electrical specifications (6mA output current, 4.5V ~ 5.5V supply voltage) with an extended operating temperature range (-55°C ~ 125°C). The 14-SOIC package is mechanically identical to the original part.

CD74HCT126M is an alternative upgrade substitute from Harris Corporation. This part maintains full electrical compatibility but carries obsolete product status and RoHS non-compliance. Selection of this part should be limited to applications where legacy component qualification is required.

MC74VHCT126ADR2G is a similar substitute from onsemi with active product status and ROHS3 compliance. This part features increased output current capability (8mA versus 6mA) and operates within the same supply voltage range. The operating temperature range is restricted to -40°C ~ 85°C, which may limit applicability in extended temperature environments. The 74VHCT series designation indicates a different logic family variant.

Frequently Asked Questions (FAQ)

Q: Can CD74HCT126M96 be used as a direct replacement for 74HCT126D,652?

A: Yes. Both parts share identical logic function (4-element non-inverting buffer with 3-state output), package configuration (14-SOIC), and electrical specifications (6mA output current, 4.5V ~ 5.5V supply voltage). No circuit modifications are required.

Q: What is the difference between the 74HCT and 74VHCT series?

A: Both series implement the same logic function with 3-state output capability. The 74VHCT series (represented by MC74VHCT126ADR2G) provides higher output current (8mA) but operates within a narrower temperature range (-40°C ~ 85°C versus -55°C ~ 125°C for 74HCT variants).

Q: Is the MC74VHCT126ADR2G suitable for all applications using the original part?

A: Compatibility depends on application temperature requirements. If the design operates within -40°C ~ 85°C, the MC74VHCT126ADR2G is suitable. Applications requiring operation below -40°C or above 85°C must use 74HCT series parts.

Q: Why is CD74HCT126M listed as RoHS non-compliant?

A: RoHS compliance status reflects the manufacturing date and process used for that specific part. CD74HCT126M predates current RoHS3 requirements. For new designs requiring RoHS compliance, CD74HCT126M96 or MC74VHCT126ADR2G are recommended.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in 14-SOIC package configuration. Packaging formats (Tube, Cut Tape & Digi-Reel, Tape & Reel) vary by manufacturer and supplier but do not affect electrical or mechanical compatibility.