CD74HC4075E-NG Equivalent & Substitute Parts

Part Overview

The CD74HC4075E-NG is a 3-channel OR gate logic integrated circuit manufactured by Texas Instruments, housed in a 14-pin DIP package. This component is classified as an active product and is currently in stock with 708 units available. The device operates across a wide supply voltage range of 2V to 6V, making it suitable for both legacy and modern digital logic applications. Identifying equivalent and substitute parts is necessary when the primary part becomes unavailable, when alternative packaging or compliance requirements are needed, or when sourcing from multiple suppliers is required for supply chain resilience.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	3
Number of Inputs	3
Voltage - Supply	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	17ns
Operating Temperature	-55°C ~ 125°C
Mounting Type	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)
Base Product Number	74HC4075

Substitute Part Grouping Explanation

Substitution of the CD74HC4075E-NG is determined by strict adherence to the following electrical and mechanical parameters:

Logic function: 3-channel OR gate with 3 inputs per channel
Supply voltage range: 2V ~ 6V
Quiescent current: 2 µA maximum
Output current capability: 5.2mA for both high and low states
Input logic thresholds: Low 0.5V ~ 1.8V, High 1.5V ~ 4.2V
Propagation delay: 17ns at 6V with 50pF load
Operating temperature range: -55°C ~ 125°C
Package type: 14-pin DIP through-hole configuration
Base product series: 74HC4075

The CD74HC4075E from Harris Corporation meets all electrical specifications and mechanical requirements for direct substitution. Both parts share identical logic functionality, pin configuration, and electrical performance characteristics within the specified operating conditions.

Parameter Comparison

Parameter	CD74HC4075E-NG (Texas Instruments)	CD74HC4075E (Harris Corporation)
Logic Type	OR Gate	OR Gate
Number of Circuits	3	3
Number of Inputs	3	3
Voltage - Supply	2V ~ 6V	2V ~ 6V
Current - Quiescent (Max)	2 µA	2 µA
Current - Output High, Low	5.2mA, 5.2mA	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	17ns	17ns
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Through Hole	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Base Product Number	74HC4075	74HC4075
Product Status	Active	Obsolete
RoHS Status	ROHS3 Compliant	RoHS non-compliant
Packaging Format	Not specified	Tube

Engineering Selection Recommendations

The CD74HC4075E-NG from Texas Instruments is the primary selection for new designs and applications requiring active product status and current compliance certifications. This part is ROHS3 compliant and maintains active manufacturing status, ensuring long-term availability and supply chain stability.

The CD74HC4075E from Harris Corporation is electrically and mechanically equivalent and may be used as a substitute when the primary part is unavailable. However, this part carries obsolete status and is RoHS non-compliant. Selection of the Harris part should be limited to legacy system maintenance, repair applications, or situations where historical component compatibility is required. The Harris part is available in tube packaging, which may affect procurement and handling procedures compared to the Texas Instruments variant.

Both parts are pin-compatible and functionally identical within the specified electrical operating parameters. Selection between them should be based on product lifecycle requirements, compliance mandates, and supply chain considerations rather than electrical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC4075E from Harris Corporation be used as a direct replacement for the CD74HC4075E-NG from Texas Instruments?

A: Yes, the Harris part is electrically and mechanically equivalent. Both devices share identical logic functionality, pin configuration, supply voltage range, output current capability, propagation delay, and operating temperature specifications. Direct substitution is possible from a functional standpoint.

Q: What are the key differences between these two parts?

A: The primary differences are product status and compliance certification. The Texas Instruments part is active and ROHS3 compliant, while the Harris part is obsolete and RoHS non-compliant. Additionally, the Harris part is supplied in tube packaging versus unspecified packaging for the Texas Instruments variant.

Q: Are there any pin configuration differences between the CD74HC4075E-NG and CD74HC4075E?

A: No. Both parts use the 14-pin DIP package with identical 0.300" (7.62mm) spacing. Pin assignments and functionality are identical, ensuring direct board-level compatibility.

Q: What supply voltage range do these parts support?

A: Both the CD74HC4075E-NG and CD74HC4075E operate across a supply voltage range of 2V to 6V, making them suitable for applications ranging from low-voltage digital logic to standard TTL-compatible systems.

Q: Should I use the Harris part for new designs?

A: No. For new designs, the Texas Instruments CD74HC4075E-NG is the recommended choice due to its active product status and ROHS3 compliance. The Harris part should be reserved for legacy system maintenance or repair applications where historical component compatibility is required.

Q: What is the propagation delay specification for these parts?

A: Both parts have a maximum propagation delay of 17 nanoseconds at 6V supply voltage with a 50pF load, ensuring consistent timing performance in digital logic circuits.

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