74ACT00SJX NAND Gate IC Equivalent & Substitute Parts

Part Overview

The 74ACT00SJX is a 4-channel 2-input NAND gate logic IC manufactured by onsemi in 14-SOP surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74ACT series represents a standard logic family with consistent functional performance across multiple manufacturers and package variants.

Substiute Parts

74ACT00SJX

onsemiIn Stock: 172174ACT00SJX Datasheet

Current PartRFQ

74ACT00MTCX

Fairchild SemiconductorIn Stock: 386774ACT00MTCX Datasheet

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74ACT00SCX

Fairchild SemiconductorIn Stock: 4087674ACT00SCX Datasheet

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CD74ACT00M

Harris CorporationIn Stock: 2417CD74ACT00M Datasheet

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CD74ACT00M96

Harris CorporationIn Stock: 2942CD74ACT00M96 Datasheet

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SN74ACT00D

Texas InstrumentsIn Stock: 2164SN74ACT00D Datasheet

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SN74ACT00DR

Texas InstrumentsIn Stock: 59116SN74ACT00DR Datasheet

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SN74ACT00TDRQ1

Texas InstrumentsIn Stock: 3494SN74ACT00TDRQ1 Datasheet

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SN74ACT00NSR

Texas InstrumentsIn Stock: 2985SN74ACT00NSR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT00SJX is determined by the following criteria:

Primary Substitution Parameters:

• Logic type: NAND Gate (4 channels, 2 inputs per channel)
• Electrical specifications: Voltage supply 4.5V ~ 5.5V, output current 24mA/24mA, input logic levels 0.8V/2V
• Propagation delay: 9ns @ 5V, 50pF
• Operating temperature range: -40°C ~ 85°C minimum
• Mounting type: Surface mount

Package Compatibility Considerations:

• Direct package match: 14-SOIC (0.209", 5.30mm Width)
• Alternative packages: 14-TSSOP (0.173", 4.40mm Width) and 14-SO variants are functionally equivalent but require PCB layout adjustment

Substitute parts are grouped into two categories: direct package equivalents and parametric equivalents with alternative packaging.

Parameter Comparison

Engineering Selection Recommendations

Preferred Active Substitutes (Direct Electrical Match):

SN74ACT00DR (Texas Instruments) and SN74ACT00TDRQ1 (Texas Instruments) are the primary recommended substitutes. Both maintain identical electrical specifications to the 74ACT00SJX with 9ns propagation delay, 2µA quiescent current, and -40°C to 85°C operating range. SN74ACT00DR is available in standard commercial packaging, while SN74ACT00TDRQ1 includes automotive qualification (AEC-Q100) with extended temperature range to 105°C. Both are ROHS3 compliant and actively manufactured.

Alternative Package Options:

74ACT00SCX (Fairchild Semiconductor) provides electrical equivalence in 14-SOIC packaging with smaller footprint (3.90mm width vs. 5.30mm). This part is active and ROHS3 compliant but requires PCB layout verification due to package dimension change.

74ACT00MTCX (Fairchild Semiconductor) offers the same electrical specifications in 14-TSSOP packaging (4.40mm width), suitable for space-constrained applications. This part is active and ROHS3 compliant.

Extended Temperature Range Alternative:

CD74ACT00M and CD74ACT00M96 (Harris Corporation) support wider operating temperature range (-55°C to 125°C) but exhibit degraded propagation delay (13.2ns vs. 9ns) and higher quiescent current (4µA vs. 2µA). These parts are obsolete and RoHS non-compliant; selection requires specific temperature requirement justification.

Compliance Considerations:

For new designs requiring RoHS3 compliance, select from SN74ACT00DR, SN74ACT00TDRQ1, 74ACT00SCX, or 74ACT00MTCX. The original 74ACT00SJX and Harris Corporation variants do not meet current RoHS requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT00DR directly replace 74ACT00SJX without PCB modification?

A: SN74ACT00DR is electrically equivalent but uses 14-SOIC packaging with 3.90mm width versus the original 5.30mm width. Pin pitch and footprint are identical (0.154" spacing), but PCB land pattern dimensions differ. Verify PCB layout compatibility before substitution.

Q: What is the difference between 74ACT00SCX and 74ACT00MTCX?

A: Both are active Fairchild Semiconductor parts with identical electrical specifications. 74ACT00SCX uses 14-SOIC packaging (3.90mm width), while 74ACT00MTCX uses 14-TSSOP packaging (4.40mm width). TSSOP packaging provides smaller footprint for space-constrained designs. Pin assignments and electrical performance are equivalent.

Q: Why do CD74ACT00M and CD74ACT00M96 show different propagation delay?

A: Harris Corporation variants specify 13.2ns propagation delay at 5V with 50pF load, compared to 9ns for other manufacturers. This represents a timing specification difference within the same logic family. Applications with strict timing requirements should use parts with 9ns specification.

Q: Is SN74ACT00TDRQ1 suitable for automotive applications?

A: Yes. SN74ACT00TDRQ1 carries AEC-Q100 automotive qualification and operates across -40°C to 105°C temperature range. This part is recommended for automotive and extended temperature applications requiring active product status and RoHS3 compliance.

Q: What packaging options are available for active substitutes?

A: Active substitutes are available in three package types: 14-SOIC (3.90mm width) via SN74ACT00DR, 14-TSSOP (4.40mm width) via 74ACT00MTCX, and 14-SO (5.30mm width) via SN74ACT00NSR. All maintain identical electrical specifications and pin assignments.