74ACTQ16244SSCX Equivalent & Substitute Parts

Part Overview

The 74ACTQ16244SSCX is a non-inverting buffer IC manufactured by onsemi, featuring 4 elements with 4 bits per element and 3-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is rated for -40°C to 85°C operating temperature. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

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-BSSOP (0.295", 7.50mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACTQ16244SSCX is determined by strict equivalence across the following parameters:

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-BSSOP (0.295", 7.50mm Width)

All identified substitute parts meet these electrical and mechanical specifications. Packaging format variations (Tape & Reel, Cut Tape, Tube, Bulk) do not affect functional compatibility and represent different distribution methods for the same die and package configuration.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Supply Voltage	Temp Range	Package	Product Status
74ACTQ16244SSCX	onsemi	Buffer, Non-Inverting	4	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Obsolete
74ACT16244DGGR	Texas Instruments	Buffer, Non-Inverting	4	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP	Active
74ACT16244DL	Texas Instruments	Buffer, Non-Inverting	4	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Last Time Buy
74ACT16244DLR	Texas Instruments	Buffer, Non-Inverting	4	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Active
74FCT162244ATPVCT	Texas Instruments	Buffer, Non-Inverting	4	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Obsolete
74FCT162244ATPVG8	Renesas Electronics Corporation	Buffer, Non-Inverting	4	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Active
74FCT162244CTPVCT	Cypress Semiconductor Corp	Buffer, Non-Inverting	4	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Active
CY74FCT162244TPVCT	Cypress Semiconductor Corp	Buffer, Non-Inverting	4	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Active

Engineering Selection Recommendations

For new designs and production continuity, the following parts are recommended based on product status and compliance:

Primary Recommendations (Active Status):

74ACT16244DLR (Texas Instruments): Active product status with highest inventory availability (15,782 pcs). ROHS3 compliant. Available in Cut Tape & Digi-Reel packaging.
74FCT162244ATPVG8 (Renesas Electronics Corporation): Active product status. ROHS3 compliant. Available in Tape & Reel packaging.
74FCT162244CTPVCT (Cypress Semiconductor Corp): Active product status. Available in Bulk packaging.
CY74FCT162244TPVCT (Cypress Semiconductor Corp): Active product status. Available in standard packaging.

Secondary Recommendation (Last Time Buy Status):

74ACT16244DL (Texas Instruments): Last Time Buy status indicates limited future availability. ROHS3 compliant. Suitable for immediate requirements only.

Not Recommended for New Designs:

74ACTQ16244SSCX (onsemi): Obsolete status.
74FCT162244ATPVCT (Texas Instruments): Obsolete status.

Frequently Asked Questions (FAQ)

Q: Can 74ACT16244DGGR replace 74ACTQ16244SSCX directly? A: 74ACT16244DGGR is electrically equivalent and meets all functional specifications. The package is 48-TFSOP (0.240", 6.10mm Width) versus the original 48-BSSOP (0.295", 7.50mm Width). Physical board layout modifications are required due to different package dimensions.

Q: What is the difference between 74ACT16244DL and 74ACT16244DLR? A: Both parts are electrically identical with matching electrical parameters, operating temperature, and supply voltage. The difference is packaging format: 74ACT16244DL is supplied in Tube, while 74ACT16244DLR is supplied in Cut Tape & Digi-Reel. 74ACT16244DLR has active product status with significantly higher inventory.

Q: Are 74FCT162244 series parts compatible with 74ACT16244 series? A: Yes. Both series meet identical electrical specifications for logic type, element count, bit configuration, output type, current ratings, supply voltage, and operating temperature. The FCT series represents an alternative manufacturer line with equivalent performance.

Q: Does MSL rating affect substitution compatibility? A: MSL rating affects moisture handling and storage requirements but does not impact electrical or functional compatibility. 74ACTQ16244SSCX has MSL 1 (Unlimited), while 74FCT162244ATPVG8 has MSL 3 (168 Hours). Both are suitable for the same circuit applications with appropriate moisture control during storage and assembly.

Q: Which substitute offers the best long-term availability? A: 74ACT16244DLR (Texas Instruments) is the recommended choice for long-term production. It maintains Active product status and has the highest inventory level (15,782 pcs) among all substitutes.

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