PI74FCT162244ATA Equivalent & Substitute Parts

Part Overview

The PI74FCT162244ATA 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 5.5V operation in a 48-TSSOP package, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for system redesign, board revision, or inventory replenishment in applications requiring this buffer configuration.

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	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Series	74FCT

Substitute Part Grouping Explanation

Substitute parts for the PI74FCT162244ATA are classified into two functional groups based on electrical and mechanical compatibility:

Group 1: Direct Electrical & Package Equivalents (48-TSSOP Package) These parts maintain identical output current specifications (24mA, 24mA) and use the same 48-TFSOP (0.240", 6.10mm Width) package footprint. They are pin-compatible and electrically interchangeable without circuit modification.

Group 2: Electrical Equivalents with Alternative Package (48-SSOP Package) These parts maintain identical electrical specifications but use the 48-BSSOP (0.295", 7.50mm Width) package. While functionally equivalent, PCB layout modification is required due to different package dimensions.

Group 3: Higher Output Current Variants (48-TSSOP & 48-SSOP Packages) These parts feature increased output current capability (32mA, 64mA) and are suitable for applications requiring higher drive capability. Package options include both 48-TFSOP and 48-BSSOP variants.

Substitution eligibility is determined by: Logic Type, Number of Elements, Number of Bits per Element, Output Type, Supply Voltage Range, Operating Temperature Range, and Mounting Type. Package compatibility must be verified against PCB design constraints.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Current (H/L)	Package	Product Status
PI74FCT162244ATA	Diodes Incorporated	Buffer, Non-Inverting	4	4	24mA, 24mA	48-TFSOP	Obsolete
74FCT162244ATPACT	Cypress Semiconductor Corp	Buffer, Non-Inverting	4	4	24mA, 24mA	48-TFSOP	Active
74FCT162244ATPVCT	Texas Instruments	Buffer, Non-Inverting	4	4	24mA, 24mA	48-BSSOP	Obsolete
74FCT162244ATPVG	IDT, Integrated Device Technology Inc	Buffer, Non-Inverting	4	4	24mA, 24mA	48-BSSOP	Active
74FCT162244ATPVG8	Renesas Electronics Corporation	Buffer, Non-Inverting	4	4	24mA, 24mA	48-BSSOP	Active
74FCT162244CTPACT	Cypress Semiconductor Corp	Buffer, Non-Inverting	4	4	24mA, 24mA	48-TFSOP	Active
74FCT162244CTPVCT	Cypress Semiconductor Corp	Buffer, Non-Inverting	4	4	24mA, 24mA	48-BSSOP	Active
74FCT162244CTPVG	IDT, Integrated Device Technology Inc	Buffer, Non-Inverting	4	4	24mA, 24mA	48-BSSOP	Active
74FCT16244ATPVG	IDT, Integrated Device Technology Inc	Buffer, Non-Inverting	4	4	32mA, 64mA	48-BSSOP	Active
74FCT16244CTPAG8	Renesas Electronics Corporation	Buffer, Non-Inverting	4	4	32mA, 64mA	48-TFSOP	Obsolete
74FCT162H244ATPACT	Texas Instruments	Buffer, Non-Inverting	4	4	24mA, 24mA	48-TFSOP	Obsolete

Engineering Selection Recommendations

For Direct Replacement (No PCB Modification Required): Select 74FCT162244ATPACT (Cypress Semiconductor Corp) or 74FCT162244CTPACT (Cypress Semiconductor Corp). Both maintain the 48-TFSOP package footprint and 24mA output current specification. These parts carry Active product status, ensuring long-term availability and supply chain stability.

For Package-Agnostic Applications: 74FCT162244ATPVG (IDT) or 74FCT162244ATPVG8 (Renesas Electronics Corporation) provide Active product status with identical electrical specifications. These parts use the 48-BSSOP package and are suitable when PCB layout permits package dimension variation.

For Higher Drive Current Requirements: 74FCT16244ATPVG (IDT) offers increased output current (32mA, 64mA) in an Active product status with 48-BSSOP packaging. This variant is appropriate for applications requiring enhanced output drive capability while maintaining the 74FCT series architecture.

Compliance Considerations: Parts with ROHS3 Compliant status (74FCT162244ATPVCT, 74FCT162244ATPVG8, 74FCT16244CTPAG8, 74FCT162H244ATPACT) meet RoHS3 requirements. The original PI74FCT162244ATA is RoHS non-compliant; substitution with compliant variants may be necessary for new designs or regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can I use 74FCT162244ATPVG as a direct replacement for PI74FCT162244ATA? A: Electrically yes, but with PCB modification. The 74FCT162244ATPVG maintains identical logic function, output current (24mA, 24mA), and supply voltage specifications. However, it uses the 48-BSSOP package (0.295", 7.50mm Width) versus the original 48-TFSOP package (0.240", 6.10mm Width). PCB footprint adjustment is required.

Q: What is the difference between 74FCT162244 and 74FCT16244 variants? A: The primary difference is output current capability. 74FCT162244 variants provide 24mA output current (high and low). 74FCT16244 variants provide 32mA high and 64mA low output current. Both maintain identical logic configuration (4 elements, 4 bits per element, 3-state output). Selection depends on application drive requirements.

Q: Are all substitute parts pin-compatible with the original PI74FCT162244ATA? A: Pin compatibility depends on package type. Parts using the 48-TFSOP package (74FCT162244ATPACT, 74FCT162244CTPACT, 74FCT16244CTPAG8, 74FCT162H244ATPACT) are pin-compatible. Parts using the 48-BSSOP package require PCB layout modification due to different pin pitch and package dimensions.

Q: Which substitute offers the best long-term availability? A: 74FCT162244ATPACT (Cypress Semiconductor Corp) and 74FCT162244CTPACT (Cypress Semiconductor Corp) both carry Active product status with substantial inventory (3100 and 22385 units respectively). These are recommended for new designs requiring assured supply continuity.

Q: Does package selection affect electrical performance? A: No. Both 48-TFSOP and 48-BSSOP packages maintain identical electrical specifications for equivalent part numbers. Package selection is determined by PCB design constraints and manufacturing capabilities, not electrical performance.

Q: Can I substitute a higher current variant (74FCT16244) in place of the standard 74FCT162244? A: Yes, with design verification. Higher current variants are backward compatible in applications where the original 24mA specification was adequate. The increased drive capability (32mA, 64mA) provides design margin but does not alter logic function or timing characteristics.

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