74FCT162244ATPACT Equivalent & Substitute Parts

Part Overview

The 74FCT162244ATPACT is a non-inverting buffer logic IC manufactured by Texas Instruments, featuring 4 elements with 4 bits per element and 3-state output capability. Housed in a 48-TSSOP package, this component operates across a 4.5V to 5.5V supply voltage range with output drive capability of 24mA for both high and low states. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements.

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)
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74FCT162244ATPACT is determined by the following critical parameters: logic type (buffer, non-inverting), functional configuration (4 elements, 4 bits per element), output type (3-state), output drive current (24mA minimum for both high and low states), supply voltage range (4.5V to 5.5V), operating temperature range (-40°C to 85°C), and physical package compatibility (48-TFSOP or equivalent 48-pin surface mount packages).

Substitute parts are categorized into two groups:

Group 1: Direct Parametric Equivalents — Parts maintaining identical electrical specifications and package form factor, including 74ACT16244DGGR, 74FCT162244CTPACT, and 74FCT162H244ATPACT.

Group 2: Functional Equivalents with Package Variations — Parts meeting electrical specifications but utilizing alternative package designations (48-BSSOP vs. 48-TFSOP), including 74FCT162244ATPVG, 74FCT162244ATPVG8, 74FCT162244CTPVG, and 74FCT16244CTPAG8.

Group 3: Lower Voltage Alternative — The SN74LVC162244ADGGR operates at reduced voltage (1.65V to 3.6V) with lower output drive current (12mA) and extended temperature range, suitable only for applications not requiring 5V operation.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Logic Type	Elements / Bits	Output Current (mA)	Supply Voltage	Temp Range (°C)	Package	RoHS
74FCT162244ATPACT	Texas Instruments	74FCT	Obsolete	Buffer, Non-Inverting	4 / 4	24 / 24	4.5 ~ 5.5V	-40 ~ 85	48-TFSOP	ROHS3
SN74LVC162244ADGGR	Texas Instruments	74LVC	Active	Buffer, Non-Inverting	4 / 4	12 / 12	1.65 ~ 3.6V	-40 ~ 125	48-TFSOP	ROHS3
74ACT16244DGGR	Texas Instruments	74ACT	Active	Buffer, Non-Inverting	4 / 4	24 / 24	4.5 ~ 5.5V	-40 ~ 85	48-TFSOP	ROHS3
74FCT162244CTPACT	Cypress Semiconductor Corp	74FCT	Active	Buffer, Non-Inverting	4 / 4	24 / 24	4.5 ~ 5.5V	-40 ~ 85	48-TFSOP	Not specified
74FCT162H244ATPACT	Texas Instruments	74FCT	Obsolete	Buffer, Non-Inverting	4 / 4	24 / 24	4.5 ~ 5.5V	-40 ~ 85	48-TFSOP	ROHS3
CY74FCT162244TPACT	Texas Instruments	74FCT	Obsolete	Buffer, Non-Inverting	4 / 4	24 / 24	4.5 ~ 5.5V	-40 ~ 85	48-TFSOP	ROHS3
74FCT162244ATPVG	IDT, Integrated Device Technology Inc	74FCT	Active	Buffer, Non-Inverting	4 / 4	24 / 24	4.5 ~ 5.5V	-40 ~ 85	48-BSSOP	Not specified
74FCT162244ATPVG8	Renesas Electronics Corporation	74FCT	Active	Buffer, Non-Inverting	4 / 4	24 / 24	4.5 ~ 5.5V	-40 ~ 85	48-BSSOP	ROHS3
74FCT162244CTPVG	IDT, Integrated Device Technology Inc	74FCT	Active	Buffer, Non-Inverting	4 / 4	24 / 24	4.5 ~ 5.5V	-40 ~ 85	48-BSSOP	Not specified
74FCT16244ATPVG	IDT, Integrated Device Technology Inc	74FCT	Active	Buffer, Non-Inverting	4 / 4	32 / 64	4.5 ~ 5.5V	-40 ~ 85	48-BSSOP	Not specified
74FCT16244CTPAG8	Renesas Electronics Corporation	74FCT	Obsolete	Buffer, Non-Inverting	4 / 4	32 / 64	4.5 ~ 5.5V	-40 ~ 85	48-TFSOP	ROHS3

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete 74FCT162244ATPACT with active components, the 74ACT16244DGGR from Texas Instruments is the primary recommendation. This part maintains identical electrical specifications (24mA output drive, 4.5V to 5.5V supply, -40°C to 85°C operating range) and package form factor (48-TFSOP), with active product status and ROHS3 compliance.

The 74FCT162244CTPACT from Cypress Semiconductor Corp provides an alternative active source maintaining full parametric equivalence, though RoHS status is not specified in available documentation.

For applications where package footprint flexibility exists, the 74FCT162244ATPVG8 from Renesas Electronics Corporation offers active status with ROHS3 compliance, utilizing the 48-BSSOP package variant while maintaining identical electrical performance.

The SN74LVC162244ADGGR should be selected only for new designs operating at reduced voltage levels (1.65V to 3.6V) where the lower output drive current (12mA) and extended temperature range (-40°C to 125°C) align with system requirements. This part is not suitable as a direct replacement in existing 5V systems.

Parts designated as obsolete (74FCT162H244ATPACT, CY74FCT162244TPACT, 74FCT16244CTPAG8) should be avoided for new production unless existing inventory is available and lifecycle planning accommodates future obsolescence.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC162244ADGGR directly replace the 74FCT162244ATPACT?

A: No. The SN74LVC162244ADGGR operates at 1.65V to 3.6V supply voltage with 12mA output drive current, whereas the 74FCT162244ATPACT requires 4.5V to 5.5V operation with 24mA output drive. Direct substitution is only possible in applications redesigned for low-voltage operation.

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

A: Both are 48-pin surface mount packages with different physical dimensions. The 48-TFSOP measures 0.240" (6.10mm) width, while the 48-BSSOP measures 0.295" (7.50mm) width. PCB footprints are not interchangeable without layout modification.

Q: Are 74FCT162244ATPVG and 74FCT162244ATPVG8 electrically identical?

A: Yes. Both parts maintain identical electrical specifications (24mA output drive, 4.5V to 5.5V supply, -40°C to 85°C operating range). The primary difference is manufacturer: IDT for 74FCT162244ATPVG and Renesas Electronics for 74FCT162244ATPVG8.

Q: Why is 74FCT16244ATPVG listed as a substitute if output current differs?

A: The 74FCT16244ATPVG provides higher output drive capability (32mA high, 64mA low) while maintaining the same logic function and package compatibility. It is suitable for applications requiring greater drive current but not as a direct replacement where 24mA output is specified.

Q: What does ROHS3 compliance indicate?

A: ROHS3 compliance certifies that the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. This is a regulatory requirement for many applications, particularly in European markets.

Q: Can I use an obsolete part if inventory is available?

A: Obsolete parts may be used if existing inventory is confirmed and lifecycle planning accounts for future unavailability. For new production designs, active status parts are recommended to ensure long-term supply continuity.

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