PI74LCX16244AEX Equivalent & Substitute Parts

Part Overview

The PI74LCX16244AEX is a non-inverting buffer IC manufactured by Diodes Incorporated, designed for 3-state output applications in low-voltage logic circuits. This 48-TSSOP package device operates across a 2V to 3.6V supply range and provides 4 elements with 4 bits per element configuration. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI74LCX16244AEX
Manufacturer	Diodes Incorporated
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-TFSOP (0.240", 6.10mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PI74LCX16244AEX is determined by the following critical parameters:

Electrical Compatibility Requirements:

Logic Type: Buffer, Non-Inverting (must match)
Number of Elements: 4 (must match)
Number of Bits per Element: 4 (must match)
Output Type: 3-State (must match)
Voltage - Supply: Minimum 2V support required
Operating Temperature: Minimum -40°C to 85°C range required

Mechanical Compatibility Requirements:

Package / Case: 48-TFSOP or 48-TSSOP (pin-compatible packages)
Mounting Type: Surface Mount (must match)

Compliance Requirements:

RoHS3 Compliant status preferred for regulatory alignment

Substitute parts are grouped into two categories: direct electrical equivalents with identical output current specifications (24mA), and functional equivalents with reduced output current (12mA) that maintain full logic functionality within the same package footprint. Parts with extended voltage ranges (1.2V minimum) or extended temperature ranges (-40°C to 125°C) provide enhanced operational flexibility while maintaining backward compatibility.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Current (mA)	Supply Voltage	Temp Range (°C)	Package	Product Status
PI74LCX16244AEX	Diodes Incorporated	Buffer, Non-Inverting	4	4	24, 24	2V ~ 3.6V	-40 ~ 85	48-TFSOP	Obsolete
74LCX16244MTDX	onsemi	Buffer, Non-Inverting	4	4	24, 24	2V ~ 3.6V	-40 ~ 85	48-TFSOP	Active
74LCX162244MTDX	Fairchild Semiconductor	Buffer, Non-Inverting	4	4	12, 12	2V ~ 3.6V	-40 ~ 85	48-TFSOP	Active
74LCX16244MTD	onsemi	Buffer, Non-Inverting	4	4	24, 24	2V ~ 3.6V	-40 ~ 85	48-TFSOP	Last Time Buy
74LVC162244ADGG:11	Nexperia USA Inc.	Buffer, Non-Inverting	4	4	12, 12	1.2V ~ 3.6V	-40 ~ 125	48-TFSOP	Active
74LVC162244APAG	IDT, Integrated Device Technology Inc	Buffer, Non-Inverting	4	4	12, 12	2.7V ~ 3.6V	-40 ~ 85	48-TFSOP	Active
74LVC162244APAG8	Renesas Electronics Corporation	Buffer, Non-Inverting	4	4	12, 12	2.7V ~ 3.6V	-40 ~ 85	48-TFSOP	Active
74LVC162244APVG	Renesas Electronics Corporation	Buffer, Non-Inverting	4	4	12, 12	2.7V ~ 3.6V	-40 ~ 85	48-BSSOP	Active
74LVC162244APVG8	Renesas Electronics Corporation	Buffer, Non-Inverting	4	4	12, 12	2.7V ~ 3.6V	-40 ~ 85	48-BSSOP	Active
74LVC16244ADGG,112	NXP Semiconductors	Buffer, Non-Inverting	4	4	24, 24	1.2V ~ 3.6V	-40 ~ 125	48-TFSOP	Active
74LVC16244ADGG,118	NXP Semiconductors	Buffer, Non-Inverting	4	4	24, 24	1.2V ~ 3.6V	-40 ~ 125	48-TFSOP	Active

Engineering Selection Recommendations

Primary Substitutes (Identical Electrical Performance):

The 74LCX16244MTDX (onsemi) and 74LCX16244ADGG,118 (NXP Semiconductors) provide direct electrical equivalence with 24mA output current matching the original PI74LCX16244AEX specification. Both are active products with full RoHS3 compliance. The NXP variants offer extended voltage range (1.2V minimum) and extended temperature range (-40°C to 125°C), providing enhanced operational margins for demanding applications.

Secondary Substitutes (Reduced Output Current):

The 74LCX162244MTDX (Fairchild Semiconductor), 74LVC162244ADGG:11 (Nexperia), 74LVC162244APAG (IDT), and 74LVC162244APAG8 (Renesas) provide functional equivalence with 12mA output current. These parts maintain full logic compatibility and are suitable for applications where reduced drive capability is acceptable. The Nexperia part offers extended temperature range to 125°C.

Package Considerations:

The 74LVC162244APVG and 74LVC162244APVG8 (Renesas) use 48-BSSOP packaging (0.295", 7.50mm width) instead of 48-TFSOP. These require PCB layout modification and are suitable only when package footprint change is acceptable.

Product Status Priority:

Active products are preferred for new designs and long-term procurement. The 74LCX16244MTD (onsemi) carries Last Time Buy status and should be avoided for new applications. All recommended substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1) or equivalent.

Frequently Asked Questions (FAQ)

Q: Can I use a 74LVC162244 series part as a direct replacement for the PI74LCX16244AEX?

A: Yes, 74LVC162244 series parts are functionally compatible. The primary difference is reduced output current (12mA vs. 24mA). Verify your circuit's current requirements before substitution. All maintain identical logic configuration (4 elements, 4 bits per element, 3-state output) and pin compatibility in 48-TFSOP packages.

Q: What is the difference between 74LCX and 74LVC series?

A: Both are non-inverting buffer ICs with identical logic configuration. The 74LVC series typically offers extended voltage range (1.2V minimum vs. 2V minimum) and extended temperature range (-40°C to 125°C vs. -40°C to 85°C). Output current specifications vary by manufacturer variant.

Q: Are the 48-TFSOP and 48-TSSOP packages interchangeable?

A: Yes, 48-TFSOP and 48-TSSOP are equivalent package designations for the same physical form factor (0.240", 6.10mm width). Pin assignments and PCB footprints are identical.

Q: Can I use parts with 48-BSSOP packaging instead of 48-TFSOP?

A: No, 48-BSSOP (0.295", 7.50mm width) is a different package footprint. PCB layout modification is required. Use only if your design can accommodate the larger package width.

Q: Which substitute offers the best long-term availability?

A: The 74LCX16244ADGG,118 (NXP Semiconductors) and 74LCX16244MTDX (onsemi) are both active products with high inventory levels. NXP variants provide extended operational ranges and are recommended for new designs requiring long-term support.

Q: Does output current reduction from 24mA to 12mA affect circuit functionality?

A: Output current determines drive capability for downstream logic loads. Reduced current (12mA) is suitable for standard TTL/CMOS loads. Verify your specific load impedance and fanout requirements before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended active substitutes maintain RoHS3 compliance. Verify compliance documentation for your specific procurement source and manufacturing date code.

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