74LCX16244MEAX Equivalent & Substitute Parts

Part Overview

The 74LCX16244MEAX is a non-inverting buffer IC manufactured by onsemi, featuring 4 elements with 4 bits per element and 3-state output capability. This component operates across a 2V to 3.6V supply voltage range and is housed in a 48-SSOP package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LCX16244MEAX
Manufacturer	onsemi
Logic Type	Buffer, Non-Inverting
Number of Elements	4
Number of Bits per Element	4
Output Type	3-State
Current - Output High, Low	24mA, 24mA
Voltage - Supply	2V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	48-BSSOP (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 74LCX16244MEAX is determined by the following critical parameters:

Logic Function: Non-inverting buffer with 4 elements, 4 bits per element, 3-state output
Package Compatibility: 48-pin SSOP or 48-pin TSSOP surface mount packages
Electrical Specifications: Output current capability (12mA or 24mA), supply voltage range, and operating temperature range
Supply Voltage Range: Minimum 2V compatibility required; parts supporting 1.2V to 3.6V or 1.65V to 3.6V are acceptable
Output Current: Parts rated for 12mA or 24mA per output are functionally equivalent
Product Status: Active parts are preferred over obsolete classifications

Substitute parts are grouped into two categories: direct equivalents (same package and electrical ratings) and compatible alternatives (different package or enhanced specifications within acceptable parameters).

Parameter Comparison

Part Number	Manufacturer	Package	Output Current (mA)	Supply Voltage (V)	Operating Temp (°C)	Product Status
74LCX16244MEAX	onsemi	48-BSSOP	24, 24	2.0 ~ 3.6	-40 ~ 85	Obsolete
SN74LVC16244ADLR	Texas Instruments	48-BSSOP	24, 24	1.65 ~ 3.6	-40 ~ 125	Active
74LVC162244ADGG:11	Nexperia USA Inc.	48-TFSOP	12, 12	1.2 ~ 3.6	-40 ~ 125	Active
74LVC162244APAG	IDT, Integrated Device Technology Inc	48-TFSOP	12, 12	2.7 ~ 3.6	-40 ~ 85	Active
74LVC162244APAG8	Renesas Electronics Corporation	48-TFSOP	12, 12	2.7 ~ 3.6	-40 ~ 85	Active
74LVC162244APVG	Renesas Electronics Corporation	48-BSSOP	12, 12	2.7 ~ 3.6	-40 ~ 85	Active
74LVC162244APVG8	Renesas Electronics Corporation	48-BSSOP	12, 12	2.7 ~ 3.6	-40 ~ 85	Active
74LVC16244ADGG,112	NXP Semiconductors	48-TFSOP	24, 24	1.2 ~ 3.6	-40 ~ 125	Active
74LVC16244ADGG,118	NXP Semiconductors	48-TFSOP	24, 24	1.2 ~ 3.6	-40 ~ 125	Active
74LVC16244APAG	Renesas Electronics Corporation	48-TFSOP	24, 24	2.7 ~ 3.6	-40 ~ 85	Active
74LVC16244APAG8	Renesas Electronics Corporation	48-TFSOP	24, 24	2.7 ~ 3.6	-40 ~ 85	Active

Engineering Selection Recommendations

Direct Package Match (48-BSSOP): SN74LVC16244ADLR from Texas Instruments provides the closest electrical match with identical 24mA output current and 48-BSSOP packaging. This part is active and ROHS3 compliant, offering extended operating temperature range (-40°C to 125°C) compared to the original specification.

74LVC162244APVG and 74LVC162244APVG8 from Renesas Electronics Corporation maintain the 48-BSSOP package but feature reduced output current (12mA). These parts are active and suitable for applications where lower output current is acceptable.

Alternative Package (48-TFSOP): Parts using the 48-TFSOP package (0.240", 6.10mm width) represent a narrower footprint alternative. NXP Semiconductors offers 74LVC16244ADGG,112 and 74LVC16244ADGG,118 with 24mA output current and extended temperature range. Nexperia USA Inc. provides 74LVC162244ADGG:11 with 12mA output current and the widest supply voltage range (1.2V to 3.6V).

All substitute parts maintain the core functional specification: 4-element, 4-bit non-inverting buffer with 3-state output. Selection should be based on package availability, output current requirements, and supply voltage constraints of the target application.

Frequently Asked Questions (FAQ)

Q: Can I use a 12mA output current part as a substitute for the 24mA original? A: Yes, if your circuit design does not require the full 24mA output current. Parts with 12mA ratings (such as those from Nexperia, IDT, and Renesas with TFSOP packaging) are functionally compatible. Verify that your load impedance and signal integrity requirements are met with the reduced current specification.

Q: What is the difference between 48-BSSOP and 48-TFSOP packages? A: Both are 48-pin surface mount packages. The 48-BSSOP (0.295" width) is slightly wider than the 48-TFSOP (0.240" width). PCB layout and footprint compatibility must be confirmed before substitution. The TFSOP variant offers a more compact footprint.

Q: Is the SN74LVC16244ADLR a direct replacement for the 74LCX16244MEAX? A: Yes. The SN74LVC16244ADLR from Texas Instruments matches the 48-BSSOP package, 24mA output current, and maintains compatibility with the 2V to 3.6V supply voltage range. It is an active product with ROHS3 compliance and extended temperature rating.

Q: Why do some substitutes have a wider supply voltage range (1.2V to 3.6V)? A: Parts with extended lower voltage limits (such as NXP and Nexperia offerings) provide greater design flexibility for low-voltage applications. The original 74LCX16244MEAX requires minimum 2V operation; substitutes supporting 1.2V or 1.65V are backward compatible and can operate in the original voltage range.

Q: Are all listed substitutes ROHS3 compliant? A: Not all. Texas Instruments SN74LVC16244ADLR, Renesas parts, and NXP parts are ROHS3 compliant. IDT 74LVC162244APAG does not list ROHS status in the provided specifications. Verify compliance requirements for your application before final selection.

Q: What is the significance of the product status (Active vs. Obsolete)? A: Active parts have ongoing manufacturing support and availability. The original 74LCX16244MEAX is obsolete, meaning production has ended. All listed substitutes are active products, ensuring long-term supply chain reliability and design continuity.

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