74ACT16240SSCX Equivalent & Substitute Parts

Part Overview

The 74ACT16240SSCX is a 4-element, 4-bit inverting buffer with 3-state output logic IC manufactured by onsemi in a 48-SSOP surface mount package. This component operates across a 4.5V to 5.5V supply voltage range and is rated for -40°C to 85°C operating temperature. The part is currently classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Logic Type	Buffer, 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-BSSOP (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74ACT16240SSCX is determined by strict equivalence across the following critical parameters:

Logic Type: Buffer, Inverting (4 element, 4 bit per element configuration)
Output Type: 3-State
Current Ratings: 24mA output high and low
Supply Voltage Range: 4.5V ~ 5.5V
Operating Temperature Range: -40°C ~ 85°C
Package: 48-BSSOP surface mount
Supplier Device Package: 48-SSOP

All identified substitutes maintain identical electrical and mechanical specifications. Differences exist only in manufacturer, product status, and packaging format (tube vs. tape & reel).

Parameter Comparison

Parameter	74ACT16240SSCX (onsemi)	74ACT16240DL (TI)	74ACT16240DLR (TI)	74FCT162240CTPVCT (TI)
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	Buffer, Inverting	Buffer, Inverting	Buffer, Inverting	Buffer, Inverting
Number of Elements	4	4	4	4
Number of Bits per Element	4	4	4	4
Output Type	3-State	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	48-BSSOP (0.295", 7.50mm Width)	48-BSSOP (0.295", 7.50mm Width)	48-BSSOP (0.295", 7.50mm Width)	48-BSSOP (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Last Time Buy	Active	Obsolete
Packaging Format	-	Tube	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	REACH Unaffected	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

74ACT16240DLR (Texas Instruments) is the primary substitute for new designs and ongoing procurement. This part carries Active product status, ROHS3 compliance, and is available in Tape & Reel packaging suitable for automated assembly. Electrical and mechanical specifications are identical to the original 74ACT16240SSCX.

74ACT16240DL (Texas Instruments) serves as an alternative substitute with Last Time Buy status, available in Tube packaging. This part maintains full electrical equivalence but may have limited long-term availability.

74FCT162240CTPVCT (Texas Instruments) is a parametric equivalent from the 74FCT series with identical electrical performance. This part is classified as Obsolete and should be considered only when 74ACT series alternatives are unavailable. The 74FCT logic family operates within the same voltage and temperature specifications as the 74ACT series for this application.

Frequently Asked Questions (FAQ)

Q: Can 74ACT16240DLR be used as a direct replacement for 74ACT16240SSCX?

A: Yes. Both parts share identical logic type, element configuration, output type, current ratings, supply voltage range, operating temperature range, and package specifications. The only differences are manufacturer and product status.

Q: What is the difference between 74ACT16240DL and 74ACT16240DLR?

A: Both are Texas Instruments parts with identical electrical specifications. The primary difference is packaging format: 74ACT16240DL is supplied in Tube, while 74ACT16240DLR is supplied in Tape & Reel (TR). Tape & Reel format is standard for high-volume automated assembly.

Q: Why is 74FCT162240CTPVCT listed as a substitute if it is from a different series?

A: The 74FCT162240CTPVCT maintains all critical electrical parameters required for substitution: 4-element, 4-bit inverting buffer configuration, 3-state output, 24mA output current, 4.5V to 5.5V supply voltage, and -40°C to 85°C operating temperature. Series designation does not prevent functional equivalence when electrical specifications are identical.

Q: Are there any compliance or certification differences between substitutes?

A: The 74ACT16240DL and 74ACT16240DLR are ROHS3 compliant. The original 74ACT16240SSCX and 74FCT162240CTPVCT are REACH Unaffected. All parts carry MSL 1 (Unlimited) moisture sensitivity rating. Compliance requirements should be verified against your specific application and regional standards.

Q: What packaging considerations apply when switching between substitutes?

A: All substitutes use the same 48-BSSOP surface mount package with 0.295" width and 7.50mm dimensions. PCB footprints and assembly processes remain unchanged. Packaging format differences (Tube vs. Tape & Reel) affect only procurement and handling procedures, not component performance or board-level integration.

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