SN74HCT32NG4 Equivalent & Substitute Parts

Part Overview

The SN74HCT32NG4 is a 4-channel OR gate logic IC manufactured by Texas Instruments in a 14-DIP package. This component is discontinued at DiGi Electronics, making substitute parts necessary for ongoing design requirements and production needs. The part operates within the 74HCT logic family standard, which defines compatibility parameters for equivalent devices.

Substiute Parts

SN74HCT32NG4

Texas InstrumentsIn Stock: 818SN74HCT32NG4 Datasheet

Current PartRFQ

SN74HCT32N

Texas InstrumentsIn Stock: 2494SN74HCT32N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74HCT32NG4 is determined by strict equivalence across the following parameters:

• Logic function: 4-channel OR gate with 2 inputs per channel
• Electrical specifications: 4.5V ~ 5.5V supply voltage, 2 µA quiescent current, 4mA output current, 22ns propagation delay
• Input logic levels: 0.8V low threshold, 2V high threshold
• Operating temperature range: -40°C ~ 85°C
• Package type: 14-DIP form factor
• Base product series: 74HCT32

Substitute parts must match all electrical and functional parameters. Packaging variations (such as tube versus other formats) do not affect functional equivalence when the physical package remains 14-DIP.

Parameter Comparison

Engineering Selection Recommendations

The SN74HCT32N is the direct substitute for the SN74HCT32NG4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, logic function, and package configuration. The primary distinction is product status: the SN74HCT32NG4 is discontinued, while the SN74HCT32N maintains active status with higher inventory availability (2460 units in stock versus 730 units for the original part).

Both parts comply with ROHS3 standards and carry identical REACH and ECCN classifications. The SN74HCT32N is suitable for direct replacement in applications currently using the SN74HCT32NG4, with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Can the SN74HCT32N replace the SN74HCT32NG4 in existing designs?

A: Yes. Both parts are electrically and functionally identical. The SN74HCT32N operates at the same supply voltage (4.5V ~ 5.5V), produces identical output current (4mA), and maintains the same propagation delay (22ns). The 14-DIP package pinout is identical, allowing direct substitution without circuit modifications.

Q: What is the difference between SN74HCT32NG4 and SN74HCT32N?

A: The parts differ only in packaging format and product status. The SN74HCT32NG4 uses a specific packaging designation (NG4), while the SN74HCT32N uses standard tube packaging. The SN74HCT32NG4 is discontinued; the SN74HCT32N is active with greater availability.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. Moisture sensitivity level differs only in designation (MSL 1 Unlimited for the original versus Not Applicable for the substitute), reflecting packaging documentation standards rather than functional differences.

Q: What are the critical parameters for substitution?

A: Substitution is valid when the following parameters match: logic function (4-channel OR gate), supply voltage range (4.5V ~ 5.5V), output current (4mA), propagation delay (22ns @ 5.5V, 50pF), operating temperature range (-40°C ~ 85°C), and physical package (14-DIP). All parameters are identical between these parts.

Q: Can this part be used in new designs?

A: The SN74HCT32N is recommended for new designs due to its active product status and higher inventory availability. The SN74HCT32NG4 is discontinued and should not be specified for new production.