74HCT08N AND Gate IC Equivalent & Substitute Parts

Part Overview

The 74HCT08N is a 4-channel 2-input AND gate logic IC manufactured by NXP USA Inc. in a 14-DIP through-hole package. This part is classified as obsolete, making substitute components necessary for new designs or when inventory becomes unavailable. The 74HCT08 series maintains consistent logic functionality across multiple manufacturers and package options, enabling direct substitution based on electrical and mechanical compatibility.

Substiute Parts

74HCT08N,652

NXP USA Inc.In Stock: 101674HCT08N,652 Datasheet

Current PartRFQ

CD74HCT08E

Harris CorporationIn Stock: 5373CD74HCT08E Datasheet

DirectRFQ

74HCT08D,653

Nexperia USA Inc.In Stock: 221574HCT08D,653 Datasheet

MFR RecommendedRFQ

SN74HCT08N

Texas InstrumentsIn Stock: 2547SN74HCT08N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HCT08N is determined by the following criteria:

Electrical Compatibility Requirements:

• Logic Type: AND Gate (4 channels, 2 inputs per channel)
• Supply Voltage: 4.5V ~ 5.5V
• Input/Output Logic Levels: Low 0.8V, High 2V
• Output Current: 4mA (High and Low)
• Quiescent Current: 2 µA maximum

Mechanical Compatibility Requirements:

• Base Product Number: 74HCT08 series
• Package options: 14-DIP through-hole or 14-SO surface-mount
• Physical dimensions must accommodate board layout constraints

Compliance & Status Considerations:

• RoHS3 compliance preferred for new designs
• Product status (Active vs. Obsolete) affects long-term availability
• REACH and ECCN classifications remain consistent across the series

Substitute parts are grouped into two categories: direct package equivalents (14-DIP through-hole) and alternative package options (14-SO surface-mount) that maintain identical electrical performance.

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole PCB Designs (14-DIP Package):

SN74HCT08N (Texas Instruments) is the primary substitute for 74HCT08N. Both parts maintain identical electrical specifications and through-hole package compatibility. SN74HCT08N holds Active product status, ensuring continued availability and supply chain stability. RoHS3 compliance and REACH Unaffected status meet modern regulatory requirements. The operating temperature range of -40°C ~ 85°C covers standard industrial applications, with propagation delay of 22ns @ 5.5V providing equivalent or superior performance.

CD74HCT08E (Harris Corporation) provides an alternative through-hole substitute with identical package dimensions. However, this part carries Obsolete status and RoHS non-compliance, limiting its suitability for new designs requiring regulatory compliance.

For Surface-Mount PCB Designs (14-SO Package):

74HCT08D (Nexperia USA Inc.) serves as the surface-mount equivalent, maintaining all electrical parameters of the original 74HCT08N while offering Active product status. The 14-SOIC package (0.154", 3.90mm Width) enables compact board layouts. RoHS3 compliance and MSL 1 rating support modern manufacturing processes.

Compliance Considerations:

All recommended substitutes maintain ECCN EAR99 and HTSUS 8542.39.0001 classifications. For applications requiring RoHS3 compliance, SN74HCT08N and 74HCT08D are preferred. CD74HCT08E does not meet RoHS requirements and should be avoided in new designs.

Frequently Asked Questions (FAQ)

Q: Can I substitute 74HCT08N with SN74HCT08N in my existing design?

A: Yes. Both parts are 14-DIP through-hole packages with identical electrical specifications: 4.5V ~ 5.5V supply voltage, 2 µA quiescent current, 4mA output current, and 0.8V/2V input logic levels. Pin-to-pin compatibility is complete. SN74HCT08N is Active status, ensuring availability.

Q: What is the difference between 74HCT08D and 74HCT08N?

A: The primary difference is package type. 74HCT08N uses 14-DIP through-hole mounting, while 74HCT08D uses 14-SOIC surface-mount. Electrical performance is identical. 74HCT08D is Active status versus 74HCT08N's Obsolete status. Package selection depends on PCB design requirements.

Q: Is CD74HCT08E suitable for new production designs?

A: CD74HCT08E is not recommended for new designs. It carries Obsolete product status and RoHS non-compliance. While electrically compatible, regulatory and supply chain considerations favor SN74HCT08N or 74HCT08D for new applications.

Q: What are the propagation delay differences between substitutes?

A: 74HCT08N and 74HCT08D specify 24ns @ 4.5V, 50pF. CD74HCT08E specifies 25ns @ 4.5V, 50pF. SN74HCT08N specifies 22ns @ 5.5V, 50pF. All values fall within acceptable logic gate performance ranges. Timing-critical applications should verify specifications against circuit requirements.

Q: Are there temperature range limitations with any substitute?

A: SN74HCT08N operates -40°C ~ 85°C, which is narrower than 74HCT08N's -40°C ~ 125°C range. For applications requiring operation above 85°C, 74HCT08D (-40°C ~ 125°C) is the appropriate choice. CD74HCT08E extends to -55°C minimum but is not recommended due to compliance issues.

Q: Do all substitutes meet RoHS3 compliance?

A: SN74HCT08N and 74HCT08D are ROHS3 Compliant. CD74HCT08E is RoHS non-compliant. For applications subject to RoHS regulations, use SN74HCT08N (through-hole) or 74HCT08D (surface-mount).