IDT74LVC244APGG Equivalent & Substitute Parts

Part Overview

The IDT74LVC244APGG is a non-inverting buffer logic IC manufactured by Renesas Electronics Corporation, featuring 2 elements with 4 bits per element and 3-state output capability. Designed for 20-TSSOP surface mount packaging, this component operates across a 2.7V to 3.6V supply voltage range with 24mA output current capability. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional and electrical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	IDT74LVC244APGG
Manufacturer	Renesas Electronics Corporation
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	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Product Status	Obsolete
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution of the IDT74LVC244APGG is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Logic type: Buffer, Non-Inverting
Number of elements: 2
Number of bits per element: 4
Output type: 3-State
Package type: 20-TSSOP with 0.173" width and 4.40mm width specification
Mounting type: Surface Mount

Allowable Parameter Variations:

Supply voltage range: Substitute parts may support extended ranges (1.2V minimum or higher maximum) provided the original 2.7V to 3.6V range is fully contained within the substitute's range
Output current: Substitute parts with 12mA or 24mA output current are acceptable; higher current capability does not compromise compatibility
Operating temperature: Extended temperature ranges (-55°C to 125°C) are acceptable provided the original -40°C to 85°C range is fully contained
Product status: Active parts are preferred over obsolete parts for production use

Non-Substitutable Parameters:

Logic type, element count, bit count, output type, and package footprint must remain identical
Package case designation must maintain 20-TSSOP specification with matching physical dimensions

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Supply Voltage	Temp Range	Package	Status
IDT74LVC244APGG	Renesas	Buffer, Non-Inverting	2	4	3-State	24/24	2.7V ~ 3.6V	-40°C ~ 85°C	20-TSSOP	Obsolete
74LCX2244MTCX	Fairchild Semiconductor	Buffer, Non-Inverting	2	4	3-State	12/12	2V ~ 3.6V	-40°C ~ 85°C	20-TSSOP	Active
74LCX244MTC	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	2V ~ 3.6V	-40°C ~ 85°C	20-TSSOP	Active
74LCX244MTCX	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	2V ~ 3.6V	-40°C ~ 85°C	20-TSSOP	Active
74LVC2244APW,118	NXP Semiconductors	Buffer, Non-Inverting	2	4	3-State	12/12	1.2V ~ 3.6V	-40°C ~ 125°C	20-TSSOP	Active
74LVC244APW-Q100J	Nexperia USA Inc.	Buffer, Non-Inverting	2	4	3-State	24/24	1.2V ~ 3.6V	-40°C ~ 125°C	20-TSSOP	Active
MC74LCX244DTG	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	2V ~ 5.5V	-55°C ~ 125°C	20-TSSOP	Active
MC74LCX244DTR2G	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	2V ~ 5.5V	-55°C ~ 125°C	20-TSSOP	Active
SN74LVC2244ADBQR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	12/12	1.65V ~ 3.6V	-40°C ~ 85°C	20-SSOP	Active
SN74LVC2244ADBR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	12/12	1.65V ~ 3.6V	-40°C ~ 85°C	20-SSOP	Active
SN74LVC2244ADGVR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	12/12	1.65V ~ 3.6V	-40°C ~ 85°C	20-TVSOP	Active

Engineering Selection Recommendations

Primary Substitutes (Identical Package - 20-TSSOP):

The 74LCX244MTCX (onsemi) and 74LCX244MTC (onsemi) provide direct functional equivalence with matching 24mA output current and identical operating temperature range. Both parts maintain the 20-TSSOP package specification and are in active production status with RoHS3 compliance and unlimited moisture sensitivity level rating.

The 74LVC2244APW,118 (NXP Semiconductors) and 74LVC244APW-Q100J (Nexperia USA Inc.) offer extended supply voltage range (1.2V minimum) and expanded operating temperature range (-40°C to 125°C). The Nexperia part includes AEC-Q100 automotive qualification for applications requiring automotive-grade components.

The MC74LCX244DTG and MC74LCX244DTR2G (onsemi) provide the widest supply voltage range (2V to 5.5V) and extended temperature capability (-55°C to 125°C), suitable for industrial and extended-temperature applications.

Alternative Package Options:

The SN74LVC2244ADBQR, SN74LVC2244ADBR (Texas Instruments) use 20-SSOP packaging instead of 20-TSSOP. While functionally equivalent, these parts require PCB layout modification due to different package footprint dimensions. The SN74LVC2244ADGVR uses 20-TVSOP packaging, also requiring layout adjustment.

Compliance Considerations:

All recommended substitutes maintain RoHS3 compliance and REACH unaffected status. The 74LVC244APW-Q100J carries AEC-Q100 automotive qualification for automotive applications. Moisture sensitivity level is uniformly rated at MSL 1 (Unlimited) across all recommended parts except certain Texas Instruments variants rated MSL 2 (1 Year).

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with lower output current (12mA vs. 24mA)?

A: Yes. The 74LCX2244MTCX and 74LVC2244APW,118 with 12mA output current are functionally compatible. Lower output current does not compromise circuit operation provided your application does not require the full 24mA drive capability. Verify your load impedance and signal integrity requirements before selection.

Q: Are the Texas Instruments parts (SN74LVC2244ADBQR, SN74LVC2244ADBR, SN74LVC2244ADGVR) direct replacements?

A: These parts are functionally equivalent but use different package types (20-SSOP or 20-TVSOP) instead of 20-TSSOP. Direct PCB substitution is not possible without layout modification. Use these only if your PCB design can accommodate the alternative package footprint.

Q: Which substitute offers the best temperature range coverage?

A: The MC74LCX244DTG and MC74LCX244DTR2G provide the widest operating temperature range (-55°C to 125°C) and supply voltage range (2V to 5.5V), making them suitable for industrial and extended-temperature applications beyond the original part's -40°C to 85°C specification.

Q: Is the Nexperia 74LVC244APW-Q100J suitable for automotive applications?

A: Yes. The 74LVC244APW-Q100J carries AEC-Q100 automotive qualification, making it appropriate for automotive-grade designs. It also provides extended supply voltage (1.2V minimum) and temperature range (-40°C to 125°C).

Q: What is the difference between 74LCX244MTC and 74LCX244MTCX?

A: Both are onsemi 74LCX series parts with identical electrical specifications (24mA output, 2V to 3.6V supply, -40°C to 85°C operation). The primary difference is packaging: 74LCX244MTC is supplied in Tube, while 74LCX244MTCX is supplied in Cut Tape (CT) & Digi-Reel format. Electrical performance is identical.

Q: Can I use parts with extended supply voltage ranges in my 2.7V to 3.6V design?

A: Yes. Substitute parts with extended supply voltage ranges (such as 1.2V to 3.6V or 2V to 5.5V) are fully compatible provided your design operates within the original 2.7V to 3.6V specification. The extended range provides design flexibility for future applications without compromising current design requirements.

Q: What packaging format should I specify for high-volume production?

A: For high-volume production, specify Cut Tape (CT) & Digi-Reel packaging (74LCX244MTCX or MC74LCX244DTR2G) for automated assembly compatibility. Tube packaging (74LCX244MTC or MC74LCX244DTG) is suitable for lower-volume or manual assembly operations.

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