CD74ACT240M96E4 Equivalent & Substitute Parts

Part Overview

The CD74ACT240M96E4 is a Buffer, Inverting logic IC featuring 2 elements with 4 bits per element and 3-state output capability in a 20-SOIC surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct component substitution in existing designs.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD74ACT240M96E4
Manufacturer	Texas Instruments
Series	74ACT
Logic Type	Buffer, Inverting
Number of Elements	2
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	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution of the CD74ACT240M96E4 is determined by strict equivalence across the following critical parameters:

Logic Type: Buffer, Inverting
Number of Elements: 2
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: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
Base Product Number: 74ACT240

All identified substitute parts maintain these electrical and mechanical specifications, ensuring functional and physical compatibility with designs originally specified for the CD74ACT240M96E4.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Voltage (V)	Temp Range (°C)	Package	Mounting	Product Status	Packaging Type
CD74ACT240M96E4	Texas Instruments	Buffer, Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-SOIC	Surface Mount	Discontinued	-
CD74ACT240M96	Texas Instruments	Buffer, Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-SOIC	Surface Mount	Active	Tape & Reel (TR)
SN74ACT240DWR	Texas Instruments	Buffer, Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-SOIC	Surface Mount	Active	Cut Tape (CT) & Digi-Reel®
MC74ACT240DWG	onsemi	Buffer, Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-SOIC	Surface Mount	Obsolete	Tube
74ACT240SCX	Fairchild Semiconductor	Buffer, Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-SOIC	Surface Mount	Active	-
MC74ACT240DWR2G	onsemi	Buffer, Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-SOIC	Surface Mount	Active	Tape & Reel (TR)

Engineering Selection Recommendations

For direct replacement of the discontinued CD74ACT240M96E4, the following parts are recommended based on product status and compliance:

Primary Recommendations (Active Status):

SN74ACT240DWR (Texas Instruments) - Active product status with highest inventory availability (2782 pcs)
CD74ACT240M96 (Texas Instruments) - Active product status, same manufacturer as original part (720 pcs)
MC74ACT240DWR2G (onsemi) - Active product status with substantial inventory (3300 pcs)
74ACT240SCX (Fairchild Semiconductor) - Active product status (1398 pcs)

Secondary Consideration:

MC74ACT240DWG (onsemi) - Obsolete status; use only if other alternatives are unavailable

All recommended parts maintain ROHS3 compliance and REACH unaffected status. Packaging format differences (Tape & Reel, Cut Tape, or Tube) do not affect electrical or mechanical compatibility and are determined by procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts directly in place of the CD74ACT240M96E4?

A: Yes. All listed substitute parts share identical electrical specifications (logic type, element count, bit configuration, output type, current ratings, voltage supply range, and operating temperature) and the same 20-SOIC surface mount package. Physical and functional compatibility is maintained.

Q: What is the difference between the packaging types listed (Tape & Reel, Cut Tape, Tube)?

A: Packaging type refers to the format in which the component is supplied for assembly. Tape & Reel (TR) and Cut Tape (CT) are standard for automated assembly lines. Tube packaging is used for manual assembly or lower-volume applications. The electrical and mechanical specifications of the component itself remain unchanged regardless of packaging format.

Q: Why is the MC74ACT240DWG listed as obsolete?

A: The MC74ACT240DWG has been designated obsolete by the manufacturer (onsemi). While it maintains identical electrical and mechanical specifications, active alternatives should be prioritized for new designs and long-term supply chain reliability.

Q: Are there any compliance or certification differences between the substitute parts?

A: All substitute parts are ROHS3 compliant and REACH unaffected. Moisture Sensitivity Level (MSL) varies: CD74ACT240M96E4, CD74ACT240M96, and SN74ACT240DWR have MSL 1 (Unlimited); MC74ACT240DWG and MC74ACT240DWR2G have MSL 3 (168 Hours). MSL rating affects storage and handling requirements but does not impact electrical performance.

Q: Which substitute part should I select for new designs?

A: For new designs, select from parts with Active product status. SN74ACT240DWR and MC74ACT240DWR2G offer the highest inventory levels and active manufacturer support. Selection between these should be based on packaging format requirements and supplier availability.

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