SN74F27NG4 Equivalent & Substitute Parts

Part Overview

The SN74F27NG4 is a NOR Gate IC featuring 3 channels with 3 inputs per channel, housed in a 14-PDIP package. Manufactured by Texas Instruments as part of the 74F logic series, this component is currently discontinued at DiGi Electronics. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for ongoing design support and production continuity. The SN74F27N serves as the primary manufacturer-recommended alternative, offering identical electrical and functional specifications while maintaining active product status.

Substiute Parts

SN74F27NG4

Texas InstrumentsIn Stock: 682SN74F27NG4 Datasheet

Current PartRFQ

SN74F27N

Texas InstrumentsIn Stock: 1924SN74F27N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74F27NG4 is determined by strict equivalence across the following critical parameters:

• Logic function: NOR Gate with identical circuit count (3) and input configuration (3 inputs per channel)
• Electrical specifications: Supply voltage range, output current ratings, input logic levels, and propagation delay
• Package compatibility: 14-DIP form factor with identical pin configuration and through-hole mounting
• Compliance standards: RoHS3 compliance and REACH unaffected status

The SN74F27N meets all substitution criteria as a direct functional and electrical equivalent. The primary distinction is product status: SN74F27NG4 is discontinued, while SN74F27N maintains active availability.

Parameter Comparison

Engineering Selection Recommendations

The SN74F27N is the appropriate substitute for the discontinued SN74F27NG4. Both components are manufactured by Texas Instruments and share identical electrical characteristics, logic function, and package specifications. The SN74F27N maintains active product status and full RoHS3 compliance, ensuring continued availability and regulatory compliance for new designs and production runs. No functional or electrical compromises are introduced through this substitution.

Frequently Asked Questions (FAQ)

Q: Can the SN74F27N be used as a direct replacement for the SN74F27NG4?

A: Yes. Both parts are electrically and functionally identical. They share the same logic function (3-channel NOR gate), electrical specifications, operating temperature range, and 14-DIP package configuration. The primary difference is product status: SN74F27NG4 is discontinued, while SN74F27N is actively manufactured.

Q: Are there any differences in pin configuration between these parts?

A: No. Both the SN74F27NG4 and SN74F27N use the 14-DIP package with identical pin assignments. Direct PCB substitution is possible without layout modifications.

Q: What is the significance of the packaging designation difference (NG4 vs. N)?

A: The NG4 suffix indicates a specific packaging variant that is no longer in production. The SN74F27N represents the current active equivalent with the same functional and electrical performance.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the SN74F27NG4 and SN74F27N are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What are the critical parameters for confirming substitution compatibility?

A: Verify that the substitute part matches the following: logic type (NOR gate), circuit count (3 channels), input configuration (3 inputs per channel), supply voltage range (4.5V ~ 5.5V), output current ratings (1mA high, 20mA low), propagation delay (5ns @ 5V, 50pF), and package type (14-DIP through-hole).