SN74LS393NG4 Equivalent & Substitute Parts

Part Overview

The SN74LS393NG4 is a binary counter IC featuring two independent 4-bit counters with negative edge triggering. This component is classified as a logic IC within the 74LS series and is designed for through-hole mounting in 14-DIP packaging. The SN74LS393NG4 is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and production continuity.

Substiute Parts

SN74LS393NG4

Texas InstrumentsIn Stock: 1016SN74LS393NG4 Datasheet

Current PartRFQ

SN74LS393N

Texas InstrumentsIn Stock: 3376SN74LS393N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS393NG4 is determined by strict equivalence across the following critical parameters:

• Logic Type: Binary Counter (2 Element, 4 Bit configuration)
• Trigger Type: Negative Edge
• Reset Function: Asynchronous
• Count Rate: 35 MHz
• Voltage Supply Range: 4.75 V ~ 5.25 V
• Operating Temperature Range: 0°C ~ 70°C
• Package / Case: 14-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Base Product Number: 74LS393

The SN74LS393N qualifies as a direct substitute based on identical electrical specifications and pinout compatibility. The primary distinction is packaging format and product availability status.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS393N is the recommended substitute for the discontinued SN74LS393NG4. Both parts maintain identical electrical and functional specifications, including counter configuration, trigger characteristics, and supply voltage requirements. The SN74LS393N is currently in active production status with established inventory availability, ensuring supply chain continuity.

Both parts comply with ROHS3 and REACH standards, maintaining regulatory compliance for applications requiring these certifications. The through-hole 14-DIP package format is consistent between both parts, allowing direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS393N be used as a direct replacement for the SN74LS393NG4?

A: Yes. Both parts are functionally and electrically identical. They share the same pinout, counter configuration (2 elements, 4 bits each), trigger type (negative edge), and operating specifications. Direct substitution is supported without circuit modifications.

Q: What is the significance of the packaging designation difference between NG4 and N?

A: The NG4 and N designations indicate different packaging formats from Texas Instruments. Both use 14-DIP through-hole packages with identical physical dimensions (0.300", 7.62mm). The primary difference is the supplier packaging method (tube format for both). Electrical performance and pinout remain unchanged.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both the SN74LS393NG4 and SN74LS393N maintain ROHS3 compliance and REACH unaffected status. They are suitable for applications requiring these regulatory certifications.

Q: What is the maximum count rate for this binary counter IC?

A: The maximum count rate is 35 MHz for both the SN74LS393NG4 and SN74LS393N. This specification applies to both independent 4-bit counter elements within the IC.

Q: What supply voltage range is required for operation?

A: Both parts operate within a supply voltage range of 4.75 V to 5.25 V. This standard 5V logic supply range is typical for 74LS series components.

Q: Is the SN74LS393N currently available in inventory?

A: Yes. The SN74LS393N is in active production status with 3301 pieces available in new original stock, providing reliable supply availability compared to the discontinued SN74LS393NG4.