SN74LS05NG4 Equivalent & Substitute Parts

Part Overview

The SN74LS05NG4 is a 6-channel inverter IC with open collector output configuration in a 14-PDIP package. This Texas Instruments component is designed for logic inversion applications requiring open collector architecture. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from available inventory.

Substiute Parts

SN74LS05NG4

Texas InstrumentsIn Stock: 987SN74LS05NG4 Datasheet

Current PartRFQ

SN74LS05N

onsemiIn Stock: 5366SN74LS05N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS05NG4 is determined by strict equivalence across the following parameters:

• Logic Type: Inverter with 6 channels, 1 input per channel
• Output Configuration: Open Collector architecture
• Electrical Specifications: Supply voltage 4.75V ~ 5.25V, output current 8mA, input logic levels 0.8V (low) and 2V (high), propagation delay 32ns @ 5V with 15pF load
• Thermal Range: 0°C ~ 70°C operating temperature
• Physical Form Factor: 14-DIP through-hole package with 0.300" (7.62mm) pitch
• Series Classification: 74LS logic family

The SN74LS05N from onsemi meets all electrical and mechanical parameters required for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS05N from onsemi provides functional equivalence to the SN74LS05NG4 across all specified electrical and mechanical parameters. Both parts operate within identical voltage ranges, current specifications, logic thresholds, and timing characteristics. The 14-DIP through-hole package format is identical, ensuring direct board-level compatibility.

The SN74LS05NG4 carries RoHS3 compliance certification, while the SN74LS05N is RoHS non-compliant. Selection between these parts depends on regulatory requirements applicable to the end application. Both parts are classified as obsolete or discontinued, indicating limited future availability. Current inventory levels show 5300 units of SN74LS05N available, compared to 912 units of the original part.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS05N directly replace the SN74LS05NG4 in existing designs?

A: Yes. Both parts share identical electrical specifications, logic configuration (6-channel inverter with open collector output), and 14-DIP package dimensions. Pin-for-pin compatibility is confirmed across all parameters.

Q: What is the difference between these parts?

A: The primary differences are manufacturer (Texas Instruments vs. onsemi) and RoHS compliance status. The SN74LS05NG4 is RoHS3 compliant; the SN74LS05N is not. All functional and electrical parameters are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 14-DIP (0.300", 7.62mm) through-hole package with identical pinout and mechanical dimensions.

Q: What supply voltage range do these parts support?

A: Both parts operate within 4.75V to 5.25V supply voltage range, typical for 74LS logic family components.

Q: What is the maximum output current specification?

A: The maximum output low current is 8mA for both parts. Open collector configuration requires external pull-up resistors for high-level output.

Q: Are there compliance or certification considerations for substitution?

A: The SN74LS05NG4 is RoHS3 compliant and REACH unaffected. The SN74LS05N is RoHS non-compliant. Applications subject to RoHS regulations must use the SN74LS05NG4 or identify alternative compliant sources.