IDT74LVC244ASOG Equivalent & Substitute Parts

Part Overview

The IDT74LVC244ASOG is a non-inverting buffer IC manufactured by Renesas Electronics Corporation, featuring 2 elements with 4 bits per element and 3-state output capability. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 20-SOIC package and 3.6V supply voltage specification define the primary compatibility parameters for identifying suitable alternatives.

Key Parameters

Parameter	Value
Manufacturer Part Number	IDT74LVC244ASOG
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-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the IDT74LVC244ASOG is determined by the following critical parameters:

Logic Function: Buffer, Non-Inverting with 2 elements, 4 bits per element, 3-state output
Package Compatibility: 20-SOIC form factor with 0.295" (7.50mm) width
Electrical Performance: Output current capability of 24mA (high and low), supply voltage range encompassing 2.7V to 3.6V
Operating Temperature Range: Minimum -40°C to 85°C compatibility
Mounting Type: Surface mount configuration

Substitute parts are grouped into two categories based on supply voltage range compatibility:

Category A - Direct Voltage Range Match (2.7V ~ 3.6V): Parts with supply voltage specifications that directly match or exceed the original part's range, ensuring drop-in compatibility without design modification.

Category B - Extended Voltage Range (1.2V ~ 3.6V or 1.65V ~ 3.6V): Parts with lower minimum supply voltage specifications that provide broader operational flexibility while maintaining the 3.6V upper limit.

Category C - Extended Voltage and Temperature Range (2V ~ 5.5V): Parts with expanded supply voltage and operating temperature ranges, suitable for applications requiring enhanced environmental performance.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements / Bits	Output Type	Current (mA)	Supply Voltage	Temp Range (°C)	Package	Status
IDT74LVC244ASOG	Renesas	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2.7V ~ 3.6V	-40 ~ 85	20-SOIC	Obsolete
74LCX244WM	onsemi	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2V ~ 3.6V	-40 ~ 85	20-SOIC	Active
74LCX244WMX	Fairchild Semiconductor	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2V ~ 3.6V	-40 ~ 85	20-SOIC	Active
74LVC2244AD,118	NXP USA Inc.	Buffer, Non-Inverting	2 / 4	3-State	12, 12	1.2V ~ 3.6V	-40 ~ 125	20-SOIC	Active
74LVC244AD,112	NXP Semiconductors	Buffer, Non-Inverting	2 / 4	3-State	24, 24	1.2V ~ 3.6V	-40 ~ 125	20-SOIC	Active
MC74LCX244DWG	onsemi	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2V ~ 5.5V	-55 ~ 125	20-SOIC	Active
MC74LCX244DWR2G	onsemi	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2V ~ 5.5V	-55 ~ 125	20-SOIC	Active
SN74LVC2244ADW	Texas Instruments	Buffer, Non-Inverting	2 / 4	3-State	12, 12	1.65V ~ 3.6V	-40 ~ 85	20-SOIC	Active
SN74LVC2244ADWR	Texas Instruments	Buffer, Non-Inverting	2 / 4	3-State	12, 12	1.65V ~ 3.6V	-40 ~ 85	20-SOIC	Active
SN74LVC2244ANS	Texas Instruments	Buffer, Non-Inverting	2 / 4	3-State	12, 12	1.65V ~ 3.6V	-40 ~ 85	20-SOIC	Active
SN74LVC2244ANSR	Texas Instruments	Buffer, Non-Inverting	2 / 4	3-State	12, 12	1.65V ~ 3.6V	-40 ~ 85	20-SOIC	Active

Engineering Selection Recommendations

For Direct Replacement with Matched Output Current (24mA)

The 74LCX244WM and 74LCX244WMX from onsemi and Fairchild Semiconductor respectively provide the closest electrical match to the IDT74LVC244ASOG. Both maintain 24mA output current capability and operate within the 2V to 3.6V supply range, with identical -40°C to 85°C temperature specifications. Both parts are active products with established supply chains, making them suitable for immediate design substitution.

For Extended Operating Temperature Range

The 74LVC244AD,112 from NXP Semiconductors extends the operating temperature range to -40°C to 125°C while maintaining 24mA output current and 20-SOIC packaging. This part supports supply voltages from 1.2V to 3.6V, providing additional design flexibility for temperature-sensitive applications.

For Expanded Environmental Performance

The MC74LCX244DWG and MC74LCX244DWR2G from onsemi offer the broadest operational envelope with 2V to 5.5V supply voltage range and -55°C to 125°C temperature specification. These parts maintain 24mA output current and 20-SOIC packaging, suitable for applications requiring enhanced environmental robustness.

For Lower Output Current Applications

The SN74LVC2244ADW, SN74LVC2244ADWR, SN74LVC2244ANS, and SN74LVC2244ANSR from Texas Instruments provide 12mA output current with supply voltage ranges from 1.65V to 3.6V. These parts are suitable for applications where reduced output current is acceptable and lower power consumption is beneficial.

All substitute parts maintain active product status, ensuring long-term availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the 74LCX244WM be used as a direct replacement for the IDT74LVC244ASOG?

A: Yes. The 74LCX244WM matches the critical electrical parameters: 24mA output current, 20-SOIC package, 3-state output configuration, and -40°C to 85°C operating temperature range. The supply voltage range of 2V to 3.6V encompasses the original part's 2.7V to 3.6V specification.

Q: What is the difference between parts with 24mA and 12mA output current?

A: Output current rating determines the maximum current the buffer can source or sink at its outputs. The original IDT74LVC244ASOG specifies 24mA. Parts rated for 12mA (such as the SN74LVC2244 series) are suitable only for applications where output current requirements do not exceed 12mA. Exceeding this rating may result in signal degradation or component damage.

Q: Are the NXP 74LVC2244AD parts compatible with the original design?

A: The 74LVC244AD,112 is compatible with full 24mA output current matching. The 74LVC2244AD,118 provides only 12mA output current and is suitable only if the application does not require the full 24mA capability. Both parts support the 20-SOIC package and 3.6V maximum supply voltage.

Q: What packaging options are available for substitute parts?

A: All substitute parts listed are available in 20-SOIC surface mount packaging, matching the original IDT74LVC244ASOG form factor. Packaging variations (Tube, Tape & Reel, Bulk) affect procurement and handling but do not alter electrical compatibility.

Q: Can I use a substitute part with a lower minimum supply voltage?

A: Yes. Parts with lower minimum supply voltage specifications (such as 1.2V or 1.65V minimum) are backward compatible with designs requiring 2.7V to 3.6V operation. The lower minimum voltage provides additional design flexibility without compromising compatibility with the original specification.

Q: Which substitute offers the best environmental performance?

A: The MC74LCX244DWG and MC74LCX244DWR2G from onsemi provide the broadest environmental specification with -55°C to 125°C operating temperature range and 2V to 5.5V supply voltage range, suitable for applications requiring enhanced thermal and voltage margin performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message