SN74LS175NG4 Equivalent & Substitute Parts

Part Overview

The SN74LS175NG4 is a Flip Flop 1 Element D-Type 4 Bit Positive Edge logic integrated circuit manufactured by Texas Instruments in a 16-DIP (0.300", 7.62mm) through-hole package. This component is classified as discontinued at DiGi Electronics, making substitute parts necessary for ongoing design support and procurement. The part operates at a clock frequency of 40 MHz with a maximum propagation delay of 25ns at 5V with 15pF load, making it suitable for digital logic applications requiring edge-triggered flip-flop functionality.

Substiute Parts

SN74LS175NG4

Texas InstrumentsIn Stock: 735SN74LS175NG4 Datasheet

Current PartRFQ

SN74LS175N

Texas InstrumentsIn Stock: 13777SN74LS175N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74LS175NG4 is determined by strict equivalence across the following critical parameters:

• Logic Function: D-Type Flip Flop with 1 Element and 4 Bits per Element
• Electrical Performance: Clock frequency of 40 MHz, propagation delay of 25ns at 5V with 15pF load, positive edge trigger
• Output Configuration: Complementary output type
• Power Supply: 4.75V ~ 5.25V operating range
• Quiescent Current: 18 mA
• Operating Temperature Range: 0°C ~ 70°C
• Physical Package: 16-DIP (0.300", 7.62mm) through-hole mounting
• Compliance: ROHS3 compliant, REACH unaffected

The SN74LS175N is identified as the manufacturer-recommended substitute, maintaining identical electrical specifications and package configuration while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS175N is the direct substitute for the SN74LS175NG4. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications. The primary distinction is product status: the SN74LS175NG4 is discontinued at DiGi Electronics, while the SN74LS175N remains active in production.

Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The SN74LS175N is available in tube packaging with significantly higher inventory levels (13,752 pieces in stock versus 709 pieces for the discontinued variant), ensuring supply chain continuity for new designs and production runs.

For applications currently using the SN74LS175NG4, direct substitution with the SN74LS175N requires no circuit modifications, as all functional, electrical, and thermal parameters are identical. Pin configuration, package dimensions, and mounting requirements remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS175N directly replace the SN74LS175NG4 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The SN74LS175N is the active production equivalent and requires no circuit modifications, PCB layout changes, or firmware updates.

Q: What is the difference between the SN74LS175NG4 and SN74LS175N?

A: The primary difference is product status and packaging. The SN74LS175NG4 is discontinued at DiGi Electronics and supplied in bulk packaging. The SN74LS175N is an active product supplied in tube packaging with higher inventory availability. All electrical specifications, pin configurations, and performance characteristics are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant and REACH unaffected. Regulatory compliance is equivalent across both variants.

Q: What is the 16-DIP package specification?

A: The 16-DIP (0.300", 7.62mm) is a through-hole dual inline package with 16 pins spaced 0.300 inches apart. This package is suitable for breadboard prototyping, through-hole PCB assembly, and socket-based installations.

Q: Can the SN74LS175N be used in new designs?

A: Yes. The SN74LS175N is the recommended part for new designs requiring a 4-bit D-type flip-flop with positive edge triggering, 40 MHz clock frequency, and 25ns propagation delay at 5V supply voltage.