SN74AHCT04RGYRG4 Equivalent & Substitute Parts

Part Overview

The SN74AHCT04RGYRG4 is a 6-channel inverter logic IC manufactured by Texas Instruments in a 14-VQFN (4.6x4.6) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain identical electrical and mechanical specifications for seamless integration into existing designs.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	6
Number of Inputs	1
Voltage - Supply	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	8mA, 8mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	7.7ns @ 5V, 50pF
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Base Product Number	74AHCT04
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SN74AHCT04RGYRG4 are identified based on strict equivalence across the following critical parameters:

Logic type and circuit configuration (6-channel inverter, 1 input per channel)
Electrical specifications (supply voltage 4.5V ~ 5.5V, output current 8mA/8mA, propagation delay 7.7ns @ 5V/50pF)
Input logic levels (Low: 0.8V, High: 2V)
Operating temperature range (-40°C ~ 125°C)
Mounting type (Surface Mount)
Base product number (74AHCT04 series)
Compliance certifications (ROHS3, REACH Unaffected, EAR99)

Two parametric equivalents meet these criteria: SN74AHCT04RGYR (Texas Instruments) and 74AHCT04BQ,115 (Nexperia USA Inc.). Both maintain identical electrical performance and functional specifications.

Parameter Comparison

Parameter	SN74AHCT04RGYRG4 (Main)	SN74AHCT04RGYR	74AHCT04BQ,115
Manufacturer	Texas Instruments	Texas Instruments	Nexperia USA Inc.
Logic Type	Inverter	Inverter	Inverter
Number of Circuits	6	6	6
Number of Inputs	1	1	1
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Quiescent (Max)	2 µA	2 µA	2 µA
Current - Output High, Low	8mA, 8mA	8mA, 8mA	8mA, 8mA
Input Logic Level - Low	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V
Max Propagation Delay @ V, Max CL	7.7ns @ 5V, 50pF	7.7ns @ 5V, 50pF	7.7ns @ 5V, 50pF
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Base Product Number	74AHCT04	74AHCT04	74AHCT04
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99
Product Status	Discontinued at DiGi Electronics	Active	Active
Packaging	Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
Supplier Device Package	14-VQFN (4.6x4.6)	14-VQFN (4.6x4.6)	14-DHVQFN (2.5x3)
Moisture Sensitivity Level (MSL)	2 (1 Year)	2 (1 Year)	1 (Unlimited)

Engineering Selection Recommendations

Both substitute parts are active products with full compliance certifications (ROHS3, REACH Unaffected, EAR99), ensuring regulatory compliance and supply chain continuity.

SN74AHCT04RGYR (Texas Instruments) maintains identical package dimensions (14-VQFN 4.6x4.6) and MSL rating (2, 1 Year) to the discontinued main part, providing direct form-fit-function replacement with no PCB layout modifications required.

74AHCT04BQ,115 (Nexperia USA Inc.) offers superior moisture handling with MSL 1 (Unlimited) rating and operates within the same electrical specifications. The package variant (14-DHVQFN 2.5x3) represents a smaller footprint. PCB layout verification is required to confirm mechanical compatibility with existing component placement.

Frequently Asked Questions (FAQ)

Q: Can SN74AHCT04RGYR be used as a direct replacement for SN74AHCT04RGYRG4?

A: Yes. Both parts share identical electrical specifications, operating temperature range, supply voltage, output current ratings, propagation delay, and input logic levels. The package dimensions (14-VQFN 4.6x4.6) and MSL ratings are identical, enabling direct substitution without PCB modifications.

Q: What is the key difference between SN74AHCT04RGYR and 74AHCT04BQ,115?

A: The primary differences are manufacturer (Texas Instruments vs. Nexperia USA Inc.), package variant (14-VQFN 4.6x4.6 vs. 14-DHVQFN 2.5x3), and moisture sensitivity level (MSL 2 vs. MSL 1). Electrical performance is identical across all specified parameters.

Q: Does the smaller package size of 74AHCT04BQ,115 affect electrical performance?

A: No. The 14-DHVQFN (2.5x3) package maintains all electrical specifications identical to the 14-VQFN (4.6x4.6) package. Physical footprint differences do not alter functional performance.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts (SN74AHCT04RGYRG4, SN74AHCT04RGYR, and 74AHCT04BQ,115) are ROHS3 Compliant and REACH Unaffected.

Q: Which substitute part should be selected for new designs?

A: Selection depends on PCB layout constraints and supply chain requirements. SN74AHCT04RGYR provides direct form-fit-function replacement. 74AHCT04BQ,115 offers improved moisture handling (MSL 1) and a smaller footprint if PCB layout permits the package variant.

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