PI74VCX16244A Equivalent & Substitute Parts

Part Overview

The PI74VCX16244A is a non-inverting buffer logic IC manufactured by Diodes Incorporated, featuring 4 elements with 4 bits per element and 3-state output capability. Designed for 48-TSSOP surface mount packaging, this component operates across a 1.8V to 3.6V supply voltage range with ±24mA output current capability.

The PI74VCX16244A is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this logic buffer function.

Key Parameters

Parameter	Value
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	1.8V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Supplier Device Package	48-TSSOP

Substitute Part Grouping Explanation

Substitution eligibility for the PI74VCX16244A is determined by the following critical parameters:

Functional Equivalence Requirements:

Logic Type: Buffer, Non-Inverting (4 elements, 4 bits per element)
Output Type: 3-State
Operating Temperature Range: -40°C ~ 85°C (TA)

Electrical Compatibility Requirements:

Voltage Supply Range: Must encompass or be compatible with 1.8V ~ 3.6V
Output Current: 24mA minimum for both high and low states
Package / Case: 48-TFSOP or 48-BSSOP (mechanically compatible surface mount packages)

Supply Chain Considerations:

Product Status: Active status preferred for long-term availability
RoHS Compliance: ROHS3 compliant parts recommended for regulatory alignment

Substitute parts are grouped into two categories based on package type: 48-TFSOP (direct footprint match) and 48-BSSOP (alternative surface mount package with different pitch).

Parameter Comparison

Part Number	Manufacturer	Series	Voltage Supply	Output Current (mA)	Package	Product Status	RoHS Status
PI74VCX16244A	Diodes Incorporated	74VCX	1.8V ~ 3.6V	24, 24	48-TFSOP	Obsolete	Non-compliant
74ALVC162244PAG	IDT	74ALVC	2.7V ~ 3.6V	24, 24	48-TFSOP	Active	Not specified
74ALVC16244DGG,118	Nexperia USA Inc.	74ALVC	1.2V ~ 3.6V	24, 24	48-TFSOP	Active	ROHS3 Compliant
74ALVC16244MTDX	Fairchild Semiconductor	74ALVC	1.65V ~ 3.6V	24, 24	48-TFSOP	Active	Not specified
74ALVCH162244PAG8	IDT	74ALVCH	2.7V ~ 3.6V	12, 12	48-TFSOP	Active	Not specified
SN74ALVC16244ADGGR	Texas Instruments	74ALVC	1.65V ~ 3.6V	24, 24	48-TFSOP	Active	ROHS3 Compliant
SN74ALVC16244ADL	Texas Instruments	74ALVC	1.65V ~ 3.6V	24, 24	48-BSSOP	Active	ROHS3 Compliant
SN74ALVC16244ADLR	Texas Instruments	74ALVC	1.65V ~ 3.6V	24, 24	48-BSSOP	Active	ROHS3 Compliant
SN74ALVCH162244DL	Texas Instruments	74ALVCH	1.65V ~ 3.6V	12, 12	48-BSSOP	Active	ROHS3 Compliant
SN74ALVCH162244DLR	Texas Instruments	74ALVCH	1.65V ~ 3.6V	12, 12	48-BSSOP	Active	ROHS3 Compliant
SN74ALVCH162244GR	Texas Instruments	74ALVCH	1.65V ~ 3.6V	12, 12	48-TFSOP	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Footprint Substitutes (48-TFSOP Package):

For applications requiring identical PCB footprint compatibility, the following parts maintain the 48-TFSOP package specification:

74ALVC16244DGG,118 (Nexperia) and SN74ALVC16244ADGGR (Texas Instruments) are preferred selections. Both parts deliver 24mA output current matching the original specification, operate across voltage ranges encompassing the PI74VCX16244A requirement, and carry ROHS3 compliance certification. Active product status ensures sustained availability.

74ALVC162244PAG (IDT) and 74ALVC16244MTDX (Fairchild Semiconductor) provide equivalent electrical performance with 24mA output current and compatible voltage ranges. Both maintain active status.

74ALVCH162244PAG8 (IDT) and SN74ALVCH162244GR (Texas Instruments) function as non-inverting buffers with 3-state output in 48-TFSOP packaging. Output current is reduced to 12mA, suitable for applications where lower drive capability is acceptable. Both carry active status and ROHS3 compliance.

Alternative Package Substitutes (48-BSSOP Package):

For designs permitting package variation, 48-BSSOP alternatives provide equivalent functionality with different mechanical dimensions (0.295" width versus 0.240" for TFSOP):

SN74ALVC16244ADL and SN74ALVC16244ADLR (Texas Instruments) deliver 24mA output current with ROHS3 compliance and active status. Packaging differs in pitch and width but maintains surface mount compatibility.

SN74ALVCH162244DL and SN74ALVCH162244DLR (Texas Instruments) provide 12mA output current in 48-BSSOP packaging with ROHS3 compliance and active status.

Selection Criteria Summary:

Maintain 24mA output current for direct electrical equivalence
Verify PCB layout compatibility with selected package type
Prioritize ROHS3 compliant parts for regulatory alignment
Confirm voltage supply range compatibility with system design

Frequently Asked Questions (FAQ)

Q: Can I use a 48-BSSOP package substitute on a PCB designed for 48-TFSOP?

A: No. The 48-TFSOP and 48-BSSOP packages have different pitch and width specifications (6.10mm versus 7.50mm width). PCB footprints are not interchangeable. Design modification or alternative part selection within the same package family is required.

Q: What is the difference between 74ALVC and 74ALVCH series parts?

A: Both series provide non-inverting buffer functionality with 3-state output. The primary difference is output current: 74ALVC series delivers 24mA, while 74ALVCH series delivers 12mA. Selection depends on circuit drive requirements.

Q: Is the PI74VCX16244A voltage range of 1.8V ~ 3.6V critical for substitute selection?

A: The original part operates from 1.8V minimum. Most substitute parts operate from 1.65V or 2.7V minimum, which is compatible with 1.8V systems. Verify your specific system voltage to confirm compatibility. Parts with lower minimum voltage (1.2V or 1.65V) provide broader compatibility.

Q: Why is the PI74VCX16244A marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active substitute parts from other manufacturers provide equivalent functionality and ensure continued supply chain access.

Q: Do all substitute parts carry RoHS compliance?

A: Not all listed substitutes specify RoHS status in available data. SN74ALVC16244ADGGR, SN74ALVC16244ADL, SN74ALVC16244ADLR, SN74ALVCH162244DL, SN74ALVCH162244DLR, and SN74ALVCH162244GR carry ROHS3 compliance certification. Verify compliance requirements for your application before final selection.

Q: Can I substitute a 12mA output part (74ALVCH series) for the original 24mA specification?

A: Only if your circuit design does not require the full 24mA drive capability. Verify load impedance and signal integrity requirements. Lower output current may affect timing or signal quality in high-capacitance applications.

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