CD74HC11E-NG Equivalent & Substitute Parts

Part Overview

The CD74HC11E-NG is a 3-channel AND 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 widely used in digital logic applications requiring multiple independent AND gate functions. The part is RoHS3 compliant and suitable for applications operating across a wide temperature range from -55°C to 125°C. Substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative packaging formats are required, or when inventory constraints necessitate sourcing from alternative suppliers.

Key Parameters

Parameter	Value
Logic Type	AND 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 @ V, Max CL	17ns @ 6V, 50pF
Operating Temperature	-55°C ~ 125°C
Mounting Type	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)
Base Product Number	74HC11

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC11E-NG is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Logic Type: AND Gate (3-channel, 3-input configuration)
Voltage Supply Range: 2V ~ 6V
Current Specifications: Quiescent current 2 µA maximum; output current 5.2mA for both high and low states
Input Logic Levels: Low 0.5V ~ 1.8V; High 1.5V ~ 4.2V
Propagation Delay: 17ns maximum at 6V with 50pF load
Operating Temperature Range: -55°C ~ 125°C
Mounting Type: Through Hole
Package Configuration: 14-DIP (0.300", 7.62mm)
Base Product Series: 74HC11

The CD74HC11E manufactured by Harris Corporation meets all electrical and mechanical parameters specified for the primary part. Substitution is valid when all parameters listed above are identical between the main part and the candidate substitute.

Parameter Comparison

Parameter	CD74HC11E-NG (Texas Instruments)	CD74HC11E (Harris Corporation)
Manufacturer	Texas Instruments	Harris Corporation
Logic Type	AND Gate	AND 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 @ V, Max CL	17ns @ 6V, 50pF	17ns @ 6V, 50pF
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	74HC11	74HC11
Product Status	Active	Obsolete
RoHS Status	ROHS3 Compliant	RoHS non-compliant
Packaging Format	Not specified	Tube

Engineering Selection Recommendations

The CD74HC11E-NG (Texas Instruments) is the primary specification part and is recommended for new designs. This part maintains active product status and full RoHS3 compliance, ensuring long-term availability and regulatory alignment.

The CD74HC11E (Harris Corporation) is a parametric equivalent that satisfies all electrical and mechanical requirements for direct substitution. However, this part is classified as obsolete and does not meet RoHS3 compliance standards. Selection of the Harris Corporation variant should be limited to legacy system maintenance or applications where RoHS compliance is not a regulatory requirement. The Harris part is supplied in tube packaging, which may differ from the primary part's packaging format.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC11E from Harris Corporation be used as a direct replacement for the CD74HC11E-NG from Texas Instruments?

A: Yes, the CD74HC11E meets all specified electrical and mechanical parameters for direct substitution. Both parts are 3-channel AND gates with identical voltage supply ranges, current specifications, input logic levels, propagation delay, operating temperature range, and 14-DIP package configuration. However, the Harris part is obsolete and non-compliant with RoHS3 standards.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by matching logic type (AND Gate, 3-channel, 3-input), voltage supply range (2V ~ 6V), current specifications (2 µA quiescent, 5.2mA output), input logic levels, propagation delay (17ns @ 6V, 50pF), operating temperature range (-55°C ~ 125°C), mounting type (Through Hole), and package configuration (14-DIP, 0.300", 7.62mm).

Q: Does packaging format affect substitution eligibility?

A: Packaging format (tube, tape and reel, or bulk) does not affect electrical or mechanical substitution eligibility. The CD74HC11E-NG and CD74HC11E are functionally equivalent regardless of packaging format. Packaging selection should be based on assembly process requirements and inventory management practices.

Q: What is the significance of the product status difference between these parts?

A: The CD74HC11E-NG maintains active product status, ensuring continued manufacturer support, availability, and compliance updates. The CD74HC11E is classified as obsolete, indicating discontinued production and limited future availability. For new designs, the active part is recommended.

Q: Why is RoHS compliance important for this substitution decision?

A: RoHS3 compliance is a regulatory requirement in many markets and industries. The CD74HC11E-NG meets RoHS3 standards, while the CD74HC11E does not. Applications subject to RoHS regulations must use the compliant part. Legacy systems or non-regulated applications may use either part based on availability.

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