SN74LS90NE4 Equivalent & Substitute Parts

Part Overview

The SN74LS90NE4 is a decade counter integrated circuit manufactured by Texas Instruments, classified as a 4-bit logic counter in the 74LS series. This component functions as a negative edge-triggered counter with asynchronous reset capability, designed for digital counting applications requiring a maximum count rate of 42 MHz.

The SN74LS90NE4 is discontinued at DiGi Electronics. Locating equivalent substitute parts is necessary to maintain design continuity and ensure project completion when original inventory becomes unavailable.

Substiute Parts

SN74LS90NE4

Texas InstrumentsIn Stock: 1061SN74LS90NE4 Datasheet

Current PartRFQ

SN74LS90N

Texas InstrumentsIn Stock: 10266SN74LS90N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LS90NE4 is determined by the following critical parameters:

• Logic Type: Counter, Decade (1 Element, 4 Bit)
• Trigger Type: Negative Edge
• Reset Type: Asynchronous
• Count Rate: 42 MHz minimum
• Voltage Supply Range: 4.75 V ~ 5.25 V
• Package / Case: 14-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Operating Temperature Range: 0°C ~ 70°C

Substitute parts must match all electrical and mechanical parameters listed above. Packaging format (tube vs. other configurations) does not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS90N is a direct functional equivalent to the SN74LS90NE4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, pin configuration, and package dimensions.

The primary distinction is product status: the SN74LS90NE4 is discontinued, while the SN74LS90N maintains active status with higher inventory availability (10,200 pieces in stock versus 1,035 pieces for the original part). Both parts maintain ROHS3 compliance and identical regulatory certifications (REACH Unaffected, ECCN EAR99).

For new designs or component replenishment, the SN74LS90N is the appropriate selection due to sustained manufacturer support and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS90N replace the SN74LS90NE4 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. Pin configuration, voltage requirements, operating temperature range, and package dimensions are equivalent. Direct substitution is possible without circuit modification.

Q: What is the difference between the SN74LS90NE4 and SN74LS90N?

A: The primary difference is packaging format and product status. The SN74LS90NE4 is supplied in standard packaging and is discontinued. The SN74LS90N is supplied in tube packaging and maintains active production status. Electrical performance and pin compatibility are identical.

Q: Are there any compatibility concerns with the 14-DIP package?

A: No. Both parts use the same 14-DIP (0.300", 7.62mm) through-hole package. PCB layouts, socket compatibility, and mounting procedures are identical.

Q: Does the substitute part meet the same compliance requirements?

A: Yes. The SN74LS90N carries identical certifications: ROHS3 Compliant, REACH Unaffected, and ECCN EAR99 classification.

Q: What is the maximum count rate for both parts?

A: Both the SN74LS90NE4 and SN74LS90N support a maximum count rate of 42 MHz.