PI74FCT16244TAEX Equivalent & Substitute Parts

Part Overview

The PI74FCT16244TAEX 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 4.5V to 5.5V supply operation, this component is classified as obsolete. Due to its obsolete status and limited availability, identifying functionally equivalent substitute parts is essential for design continuity and procurement flexibility.

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)
Base Product Number	74FCT16244
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the PI74FCT16244TAEX is determined by the following critical parameters:

Primary Substitution Criteria:

Logic Type: Buffer, Non-Inverting (4 elements, 4 bits per element)
Output Type: 3-State
Voltage Supply Range: 4.5V ~ 5.5V
Operating Temperature Range: -40°C ~ 85°C
Mounting Type: Surface Mount
Base Product Number: 74FCT16244 or 74FCT162244 series

Secondary Compatibility Factors:

Package form factor (48-TFSOP or 48-BSSOP/48-SSOP)
Output current specifications (32mA/64mA or 24mA/24mA)
Product status and availability

Substitute parts are grouped into two categories based on package compatibility: TSSOP variants (pin-compatible with original) and SSOP variants (functionally equivalent with different package dimensions).

Parameter Comparison

Part Number	Manufacturer	Logic Type	Output Current (High/Low)	Package / Case	Product Status	Inventory
PI74FCT16244TAEX	Diodes Incorporated	Buffer, Non-Inverting	32mA, 64mA	48-TFSOP (0.240", 6.10mm)	Obsolete	1071 Pcs
74FCT162244ATPACT	Cypress Semiconductor Corp	Buffer, Non-Inverting	24mA, 24mA	48-TFSOP (0.240", 6.10mm)	Active	3100 Pcs
74FCT162244ATPVCT	Texas Instruments	Buffer, Non-Inverting	24mA, 24mA	48-BSSOP (0.295", 7.50mm)	Obsolete	995 Pcs
74FCT162244ATPVG	IDT, Integrated Device Technology Inc	Buffer, Non-Inverting	24mA, 24mA	48-BSSOP (0.295", 7.50mm)	Active	4078 Pcs
74FCT162244ATPVG8	Renesas Electronics Corporation	Buffer, Non-Inverting	24mA, 24mA	48-BSSOP (0.295", 7.50mm)	Active	1140 Pcs
74FCT162244CTPACT	Cypress Semiconductor Corp	Buffer, Non-Inverting	24mA, 24mA	48-TFSOP (0.240", 6.10mm)	Active	22385 Pcs
74FCT162244CTPVCT	Cypress Semiconductor Corp	Buffer, Non-Inverting	24mA, 24mA	48-BSSOP (0.295", 7.50mm)	Active	2200 Pcs
74FCT162244CTPVG	IDT, Integrated Device Technology Inc	Buffer, Non-Inverting	24mA, 24mA	48-BSSOP (0.295", 7.50mm)	Active	1661 Pcs
74FCT16244ATPVG	IDT, Integrated Device Technology Inc	Buffer, Non-Inverting	32mA, 64mA	48-BSSOP (0.295", 7.50mm)	Active	2400 Pcs
74FCT162H244ATPACT	Texas Instruments	Buffer, Non-Inverting	24mA, 24mA	48-TFSOP (0.240", 6.10mm)	Obsolete	845 Pcs
74FCT162H244CTPVC	Texas Instruments	Buffer, Non-Inverting	24mA, 24mA	48-BSSOP (0.295", 7.50mm)	Obsolete	2060 Pcs

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement (48-TFSOP Package):

74FCT162244CTPACT (Cypress Semiconductor Corp) is the primary recommendation. This part maintains the original 48-TFSOP package form factor, ensuring direct PCB compatibility without layout modifications. The part is in active production status with substantial inventory (22,385 units), providing long-term supply assurance. Output current specification of 24mA/24mA is lower than the original 32mA/64mA, requiring verification that downstream load requirements are satisfied.

74FCT162244ATPACT (Cypress Semiconductor Corp) offers identical electrical and package specifications to 74FCT162244CTPACT with active product status and 3,100 units in stock.

For Functionally Equivalent Replacement (48-BSSOP Package):

74FCT162244ATPVG (IDT, Integrated Device Technology Inc) provides active product status with 4,078 units available. This part requires PCB layout modification due to the 48-BSSOP package (0.295" width versus 0.240" original), but offers superior long-term availability.

74FCT162244ATPVG8 (Renesas Electronics Corporation) is an active alternative in 48-BSSOP package with ROHS3 compliance and MSL rating of 3 (168 Hours).

For Matching Output Current Specifications:

74FCT16244ATPVG (IDT, Integrated Device Technology Inc) maintains the original 32mA/64mA output current specification, matching the PI74FCT16244TAEX electrical performance exactly. This part is in active production with 2,400 units in stock, though it requires 48-BSSOP package accommodation.

Compliance Considerations:

All recommended active substitutes comply with ROHS3 and REACH requirements. Obsolete alternatives (Texas Instruments variants) should be avoided for new designs unless existing inventory constraints necessitate their use.

Frequently Asked Questions (FAQ)

Q: Can 74FCT162244 series parts directly replace PI74FCT16244TAEX?

A: Yes, 74FCT162244 series parts are functionally equivalent substitutes. Both share identical logic type (Buffer, Non-Inverting), element count (4 elements, 4 bits per element), output type (3-State), and supply voltage range (4.5V ~ 5.5V). The primary difference is output current capability: 74FCT162244 variants specify 24mA/24mA versus the original 32mA/64mA. Verify that your circuit load requirements do not exceed 24mA per output before substitution.

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

A: Both are 48-pin surface mount packages with identical pin count and electrical connectivity. The 48-TFSOP (Thin Fine-Pitch Small Outline Package) measures 0.240" in width, while the 48-BSSOP (Broad Small Outline Package) measures 0.295" in width. Direct PCB substitution requires matching package type. If PCB layout modification is acceptable, BSSOP variants offer superior availability from active manufacturers.

Q: Why do some substitutes have lower output current ratings?

A: The 74FCT162244 series represents a later design iteration of the 74FCT16244 base product. Improved process technology allows the 74FCT162244 to deliver equivalent functionality with reduced output current specifications (24mA/24mA). This is not a limitation but rather reflects manufacturing advancement. Confirm that your application does not require the higher 32mA/64mA output current before selecting 24mA/24mA variants.

Q: Are obsolete product status parts suitable for new designs?

A: Obsolete parts should not be selected for new designs. The PI74FCT16244TAEX, 74FCT162244ATPVCT, 74FCT162H244ATPACT, and 74FCT162H244CTPVC are all classified as obsolete. Active alternatives from Cypress Semiconductor, IDT, and Renesas Electronics provide equivalent functionality with guaranteed long-term availability and manufacturing support.

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

A: 74FCT162244CTPACT (Cypress Semiconductor Corp) provides the highest inventory level (22,385 units) combined with active product status. This part maintains the original 48-TFSOP package form factor, eliminating PCB redesign requirements. IDT's 74FCT162244ATPVG offers the second-best availability (4,078 units) with active status, though it requires 48-BSSOP package accommodation.

Q: Can I use 74FCT16244ATPVG as a substitute?

A: Yes, 74FCT16244ATPVG is a valid substitute that maintains the original 32mA/64mA output current specification, providing exact electrical matching. However, it requires 48-BSSOP package accommodation and is available in lower quantities (2,400 units) compared to 74FCT162244 variants. Use this part only if output current matching is a critical design requirement.

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