ACTS240DMSR Equivalent & Substitute Parts

Part Overview

The ACTS240DMSR is an inverting buffer logic integrated circuit manufactured by Renesas Electronics Corporation. This device features 2 elements with 4 bits per element and 3-state output capability, designed for 5.5V logic applications. The component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

ACTS240DMSR

Renesas Electronics CorporationIn Stock: 765ACTS240DMSR Datasheet

Current PartRFQ

ACTS240KMSR

Renesas Electronics CorporationIn Stock: 1146ACTS240KMSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ACTS240DMSR is determined by the following critical parameters:

Electrical Compatibility Parameters:

• Logic Type: Buffer function with inverting configuration
• Number of Elements: 2 elements minimum
• Bits per Element: 4 bits per element
• Output Type: 3-State output capability
• Voltage Supply Range: 4.5V ~ 5.5V operation
• Operating Temperature Range: -55°C ~ 125°C

Physical Compatibility Parameters:

• Mounting Type: Through Hole or Surface Mount alternatives
• Package Type: 20-pin configurations

The ACTS240KMSR qualifies as a substitute based on matching electrical parameters (voltage supply, temperature range, element count, bit configuration, and 3-state output). However, this substitute differs in logic type classification (Buffer, Driver versus Buffer, Inverting) and mounting technology (Surface Mount versus Through Hole).

Parameter Comparison

Engineering Selection Recommendations

The ACTS240KMSR is available as an active product with current manufacturing status, providing supply chain continuity for the obsolete ACTS240DMSR. Both devices share identical electrical specifications including voltage supply range (4.5V ~ 5.5V), operating temperature range (-55°C ~ 125°C), element configuration (2 elements, 4 bits per element), and 3-state output capability.

The ACTS240KMSR carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. The primary design consideration involves the transition from through-hole mounting (ACTS240DMSR, 20-CDIP package) to surface-mount technology (ACTS240KMSR, 20-CFlatPack package), which requires PCB layout and assembly process modifications.

The difference in logic type classification (Buffer, Driver versus Buffer, Inverting) requires functional verification within the specific application circuit to ensure signal inversion requirements are met or appropriately addressed through circuit design modifications.

Frequently Asked Questions (FAQ)

Q: Can the ACTS240KMSR directly replace the ACTS240DMSR in existing designs?

A: Direct pin-for-pin replacement is not possible due to different package types (20-CDIP through-hole versus 20-CFlatPack surface-mount). PCB redesign and assembly process changes are required. Functional compatibility exists for voltage supply, temperature range, element count, and bit configuration parameters.

Q: What is the significance of the logic type difference between these parts?

A: The ACTS240DMSR is classified as Buffer, Inverting, while the ACTS240KMSR is classified as Buffer, Driver. Both devices provide 3-state output capability and operate within identical voltage and temperature specifications. The functional difference requires evaluation within the specific application circuit to confirm signal inversion behavior meets design requirements.

Q: Are there mounting technology considerations for substitution?

A: Yes. The ACTS240DMSR uses through-hole mounting (20-CDIP package), while the ACTS240KMSR uses surface-mount technology (20-CFlatPack package). This difference necessitates PCB layout modifications, different soldering processes, and updated assembly procedures.

Q: What compliance certifications apply to the substitute part?

A: The ACTS240KMSR is ROHS3 compliant and REACH unaffected. The original ACTS240DMSR compliance status is not specified in the provided data.

Q: Do both parts operate within the same electrical specifications?

A: Yes. Both devices operate with 4.5V ~ 5.5V supply voltage and -55°C ~ 125°C temperature range. Both provide 2 elements with 4 bits per element and 3-state output configuration.

Q: Why is the ACTS240DMSR classified as obsolete?

A: The ACTS240DMSR is marked as obsolete by the manufacturer. The ACTS240KMSR, sharing the same base product number (ACTS240) with active manufacturing status, represents the current product offering for this logic function family.