SN74LVC244ARGYRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC244ARGYRG4 is a non-inverting buffer logic IC manufactured by Texas Instruments, featuring 2 elements with 4 bits per element and 3-state output capability. Designed for 20-VQFN surface mount packaging, this component operates across a 1.65V to 3.6V supply voltage range and supports industrial temperature specifications from -40°C to 125°C.

The SN74LVC244ARGYRG4 is currently discontinued at DiGi Electronics. Identifying parametric equivalents and active substitute parts ensures design continuity and maintains supply chain reliability for new production runs and legacy system support.

Key Parameters

Parameter	Value
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Current - Output High, Low	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount
Package / Case	20-VFQFN Exposed Pad
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC244ARGYRG4 is determined by strict parametric matching across the following criteria:

Core Functional Parameters:

Logic type: Buffer, Non-Inverting
Element count: 2 elements
Bit configuration: 4 bits per element
Output configuration: 3-State

Electrical Parameters:

Output current capability: 24mA (both high and low)
Supply voltage range: 1.65V ~ 3.6V
Operating temperature range: -40°C ~ 125°C (TA)

Physical & Compliance Parameters:

Mounting type: Surface Mount
Package classification: 20-pin QFN with exposed pad
RoHS compliance: ROHS3 Compliant
REACH status: REACH Unaffected

All substitute parts listed below meet these parametric requirements. Variations in supplier device package nomenclature (20-VQFN vs. V-QFN4525-20) represent equivalent physical footprints and pin configurations.

Parameter Comparison

Parameter	SN74LVC244ARGYRG4 (TI)	SN74LVC244ARGYR (TI)	74LVC241AQ20-13 (Diodes)	74LVC244AQ20-13 (Diodes)	74LVCH244AQ20-13 (Diodes)
Manufacturer	Texas Instruments	Texas Instruments	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	2	2	2	2	2
Number of Bits per Element	4	4	4	4	4
Output Type	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	20-VFQFN Exposed Pad	20-VFQFN Exposed Pad	20-VFQFN Exposed Pad	20-VFQFN Exposed Pad	20-VFQFN Exposed Pad
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Active	Active	Active	Active
MSL Rating	2 (1 Year)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute (Same Manufacturer): SN74LVC244ARGYR from Texas Instruments is the direct parametric equivalent with identical electrical and physical specifications. This part maintains the same manufacturing lineage and is currently in active production status with higher inventory availability (4,300 units) compared to the discontinued SN74LVC244ARGYRG4.

Alternative Substitutes (Cross-Manufacturer): The 74LVC244AQ20-13 and 74LVC241AQ20-13 from Diodes Incorporated, along with the 74LVCH244AQ20-13, provide parametric equivalence with all critical electrical and mechanical parameters matching the original specification. These parts are in active production with substantial inventory levels (744 to 10,300 units). The Diodes Incorporated alternatives feature improved moisture sensitivity ratings (MSL 1 vs. MSL 2), providing enhanced reliability for long-term storage and humid environment applications.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74LVC244ARGYRG4 with SN74LVC244ARGYR? A: Yes. Both parts are Texas Instruments products with identical parametric specifications, electrical performance, and physical packaging. The primary difference is product status: SN74LVC244ARGYR is currently active in production.

Q: What is the difference between 74LVC244AQ20-13 and 74LVCH244AQ20-13? A: Both parts meet the parametric requirements for substitution. The 74LVCH244AQ20-13 belongs to the 74LVCH series, while 74LVC244AQ20-13 belongs to the 74LVC series. Both deliver identical electrical performance and package specifications. Series designation reflects internal design architecture but does not affect functional compatibility in this application.

Q: Are the Diodes Incorporated parts pin-compatible with the Texas Instruments original? A: Yes. All substitute parts use the 20-pin QFN package with exposed pad configuration. Pin assignments, electrical characteristics, and mechanical footprints are equivalent across all listed substitutes.

Q: Why do some parts show MSL 1 and others MSL 2? A: Moisture Sensitivity Level (MSL) reflects the component's sensitivity to moisture absorption during storage. MSL 1 (Unlimited shelf life) provides superior storage reliability compared to MSL 2 (1 Year). The Diodes Incorporated alternatives offer this advantage for applications requiring extended inventory management.

Q: Are all substitute parts RoHS and REACH compliant? A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment with the original SN74LVC244ARGYRG4 specification.

Q: What is the inventory status for each substitute? A: SN74LVC244ARGYR (4,300 units), 74LVC241AQ20-13 (744 units), 74LVC244AQ20-13 (10,300 units), and 74LVCH244AQ20-13 (10,200 units) are all in active stock as new original components.

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