PI74FCT16244ATAE Equivalent & Substitute Parts

Part Overview

The PI74FCT16244ATAE is a non-inverting buffer logic IC manufactured by Diodes Incorporated, featuring 4 elements with 4 bits per element and 3-state output capability. This 48-TSSOP surface mount device operates across a 4.5V to 5.5V supply range and is rated for -40°C to 85°C operating temperature. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

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	32mA, 64mA
Voltage - Supply	4.5V ~ 5.5V
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
Series	74FCT

Substitute Part Grouping Explanation

Substitution eligibility for the PI74FCT16244ATAE is determined by the following critical parameters:

Logic Type: Buffer, Non-Inverting (must match exactly)
Number of Elements: 4 (must match exactly)
Number of Bits per Element: 4 (must match exactly)
Output Type: 3-State (must match exactly)
Voltage - Supply: 4.5V ~ 5.5V (must match exactly)
Operating Temperature: -40°C ~ 85°C (must match exactly)
Series: 74FCT (must match exactly)

Substitute parts are grouped into two categories based on output current specifications and package configuration:

Group A - Matched Output Current (32mA High, 64mA Low): Parts maintaining identical output current ratings to the original PI74FCT16244ATAE.

Group B - Reduced Output Current (24mA High, 24mA Low): Parts with lower output current specifications, suitable for applications not requiring the higher current drive capability of the original part.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Current - Output High, Low	Package / Case	Supplier Device Package	Inventory (Pcs)
PI74FCT16244ATAE	Diodes Incorporated	Obsolete	32mA, 64mA	48-TFSOP (0.240", 6.10mm Width)	48-TSSOP	726
CY74FCT16244ATPACT	Cypress Semiconductor Corp	Active	32mA, 64mA	48-TFSOP (0.240", 6.10mm Width)	48-TSSOP	2700
74FCT162244ATPACT	Cypress Semiconductor Corp	Active	24mA, 24mA	48-TFSOP (0.240", 6.10mm Width)	48-TSSOP	3100
74FCT162244ATPVCT	Texas Instruments	Obsolete	24mA, 24mA	48-BSSOP (0.295", 7.50mm Width)	48-SSOP	995
74FCT162244ATPVG	IDT, Integrated Device Technology Inc	Active	24mA, 24mA	48-BSSOP (0.295", 7.50mm Width)	48-SSOP	4078
74FCT162244ATPVG8	Renesas Electronics Corporation	Active	24mA, 24mA	48-BSSOP (0.295", 7.50mm Width)	48-SSOP	1140
74FCT162244CTPACT	Cypress Semiconductor Corp	Active	24mA, 24mA	48-TFSOP (0.240", 6.10mm Width)	48-TSSOP	22385
74FCT162244CTPVCT	Cypress Semiconductor Corp	Active	24mA, 24mA	48-BSSOP (0.295", 7.50mm Width)	48-SSOP	2200
74FCT162244CTPVG	IDT, Integrated Device Technology Inc	Active	24mA, 24mA	48-BSSOP (0.295", 7.50mm Width)	48-SSOP	1661
74FCT16244ATPVG	IDT, Integrated Device Technology Inc	Active	32mA, 64mA	48-BSSOP (0.295", 7.50mm Width)	48-SSOP	2400
74FCT16244CTPAG8	Renesas Electronics Corporation	Obsolete	32mA, 64mA	48-TFSOP (0.240", 6.10mm Width)	48-TSSOP	1103

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement (48-TFSOP Package, 32mA/64mA Output Current):

CY74FCT16244ATPACT from Cypress Semiconductor Corp is the primary substitute. This part maintains identical package geometry, output current specifications, and electrical characteristics while offering active product status and superior inventory availability (2700 units).

For Active Product Status with Reduced Output Current (48-TFSOP Package, 24mA/24mA Output Current):

74FCT162244CTPACT from Cypress Semiconductor Corp provides the highest inventory availability (22385 units) with active product status. This part is suitable for applications where the reduced output current specification does not impact circuit performance.

For Alternative Package Configuration (48-BSSOP Package, 24mA/24mA Output Current):

74FCT162244ATPVG from IDT offers active product status with substantial inventory (4078 units). The 48-BSSOP package requires PCB layout modification but maintains full functional compatibility.

Parts with obsolete status (74FCT162244ATPVCT, 74FCT16244CTPAG8) should be considered only when inventory constraints or specific design requirements necessitate their use.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with 24mA/24mA output current instead of the original 32mA/64mA specification?

A: Yes, provided your circuit design does not require the higher current drive capability. The 24mA/24mA parts are electrically compatible and will function correctly in applications with appropriate load impedance. Verify your circuit's current requirements before substitution.

Q: What is the difference between 48-TFSOP and 48-BSSOP packages?

A: The 48-TFSOP package has a 0.240" (6.10mm) width, while the 48-BSSOP package has a 0.295" (7.50mm) width. These are physically different packages requiring different PCB footprints. Direct substitution between these packages requires PCB redesign.

Q: Why should I prioritize active product status parts?

A: Active product status parts have ongoing manufacturer support, documented availability, and stable pricing. Obsolete parts face supply uncertainty and potential discontinuation, making them unsuitable for new designs or long-term production.

Q: Are all substitute parts RoHS3 compliant?

A: Not all substitute parts list RoHS3 compliance in the provided specifications. Verify compliance requirements for your specific application and confirm with the manufacturer if RoHS certification is mandatory.

Q: Can I use CY74FCT16244ATPACT as a direct replacement without PCB modification?

A: Yes. CY74FCT16244ATPACT maintains identical package geometry (48-TFSOP), pin configuration, and output current specifications, enabling direct PCB substitution without layout changes.

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