SN74LS293NG4 Equivalent & Substitute Parts

Part Overview

The SN74LS293NG4 is a 4-bit binary counter IC manufactured by Texas Instruments, housed in a 14-DIP package. This component functions as a synchronous, positive-edge-triggered counter with a maximum count rate of 42 MHz and operates within a 4.75 V to 5.25 V supply voltage range. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain identical electrical and mechanical specifications for seamless integration into existing designs.

Substiute Parts

SN74LS293NG4

Texas InstrumentsIn Stock: 966SN74LS293NG4 Datasheet

Current PartRFQ

SN74LS293N

Texas InstrumentsIn Stock: 1779SN74LS293N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS293NG4 is determined by strict equivalence across the following parameters:

• Logic Function: Binary counter with identical bit width (4-bit) and element count (1)
• Electrical Characteristics: Matching count rate (42 MHz), supply voltage range (4.75 V ~ 5.25 V), and operating temperature range (0°C ~ 70°C)
• Trigger and Reset Behavior: Positive edge trigger with synchronous reset
• Package Specification: 14-DIP form factor with 0.300" (7.62mm) pitch
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The SN74LS293N qualifies as a direct substitute based on identical performance across all electrical and mechanical parameters, with the distinction of active product status and alternative packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS293N is the recommended substitute for the discontinued SN74LS293NG4. Both components are manufactured by Texas Instruments and maintain identical electrical performance specifications, including count rate, supply voltage range, and operating temperature parameters. The SN74LS293N carries active product status, ensuring continued availability and supply chain reliability. Both parts meet ROHS3 compliance and REACH unaffected requirements, supporting regulatory and environmental standards. The mechanical compatibility—identical 14-DIP package configuration and through-hole mounting—permits direct board-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS293N be used as a direct replacement for the SN74LS293NG4?

A: Yes. Both parts are functionally and electrically identical across all specified parameters, including logic type, bit width, count rate, supply voltage, operating temperature, and package configuration. The SN74LS293N is the manufacturer-recommended substitute.

Q: What is the difference between the SN74LS293NG4 and SN74LS293N?

A: The primary difference is product status: the SN74LS293NG4 is discontinued, while the SN74LS293N remains active. Packaging configuration differs (NG4 specifies a specific supplier device package variant), but both use the standard 14-DIP form factor. Electrical and mechanical specifications are identical.

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

A: No. Both the SN74LS293NG4 and SN74LS293N use the 14-DIP package with identical pin assignments and functionality. Direct pin-for-pin substitution is supported.

Q: What compliance certifications apply to the substitute part?

A: The SN74LS293N is ROHS3 compliant and REACH unaffected, matching the compliance profile of the original SN74LS293NG4.

Q: Is the SN74LS293N suitable for new designs?

A: Yes. The SN74LS293N carries active product status from Texas Instruments, making it appropriate for both replacement applications and new design implementations.