74ACT11240DBRE4 Equivalent & Substitute Parts

Part Overview

The 74ACT11240DBRE4 is a Buffer, Inverting logic IC featuring 2 elements with 4 bits per element and 3-state output capability. Manufactured by Texas Instruments in a 24-SSOP surface mount package, this component operates across a 4.5V to 5.5V supply voltage range with output current ratings of 24mA for both high and low states.

The 74ACT11240DBRE4 carries an Obsolete product status. Locating functionally equivalent substitute components is necessary to support ongoing system maintenance, design updates, and procurement continuity where original inventory becomes unavailable.

Substiute Parts

74ACT11240DBRE4

Texas InstrumentsIn Stock: 76074ACT11240DBRE4 Datasheet

Current PartRFQ

74AC11240DBR

Texas InstrumentsIn Stock: 93674AC11240DBR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT11240DBRE4 is determined by the following critical parameters:

• Logic Type: Buffer, Inverting (functional equivalence)
• Number of Elements: 2 (functional equivalence)
• Number of Bits per Element: 4 (functional equivalence)
• Output Type: 3-State (functional equivalence)
• Current - Output High, Low: 24mA, 24mA (electrical equivalence)
• Operating Temperature: -40°C ~ 85°C (TA) (thermal equivalence)
• Package / Case: 24-SSOP (0.209", 5.30mm Width) (mechanical equivalence)
• Mounting Type: Surface Mount (mechanical equivalence)

The 74AC11240DBR meets all substitution criteria. Both components share identical logic architecture, output specifications, thermal operating range, and physical packaging. The primary distinction is the supply voltage range tolerance and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The 74AC11240DBR is a direct functional substitute for the 74ACT11240DBRE4. Both components are manufactured by Texas Instruments and maintain ROHS3 compliance and REACH unaffected status.

The 74AC11240DBR carries Active product status, ensuring ongoing availability and manufacturing support. The extended supply voltage range of 3V to 5.5V on the 74AC11240DBR provides broader operational flexibility compared to the 4.5V to 5.5V specification of the 74ACT11240DBRE4. In applications where the 74ACT11240DBRE4 supply voltage range is sufficient, the 74AC11240DBR operates within those parameters without functional degradation.

The packaging difference between the 74ACT11240DBRE4 (Dipped) and 74AC11240DBR (Tape & Reel) reflects only the delivery format and does not affect electrical or mechanical compatibility in circuit implementation.

Frequently Asked Questions (FAQ)

Q: Can the 74AC11240DBR directly replace the 74ACT11240DBRE4 in existing designs?

A: Yes. Both components share identical logic architecture, output current specifications, thermal operating range, and 24-SSOP package dimensions. The 74AC11240DBR operates within the 4.5V to 5.5V range required by the original design.

Q: What is the significance of the supply voltage range difference?

A: The 74AC11240DBR supports 3V to 5.5V operation, while the 74ACT11240DBRE4 operates from 4.5V to 5.5V. This extended lower voltage capability on the substitute does not create incompatibility; it only provides additional operational flexibility if future designs require lower supply voltages.

Q: Does the packaging format difference affect circuit compatibility?

A: No. The Dipped and Tape & Reel packaging formats represent only the delivery and handling method. Both formats contain the identical 24-SSOP component package with matching pin configuration, spacing, and electrical characteristics.

Q: Why is the 74ACT11240DBRE4 classified as Obsolete?

A: Product status reflects manufacturer lifecycle decisions. The 74AC11240DBR, carrying Active status, represents the current manufacturing continuation and is the recommended selection for new procurement.

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

A: Both components maintain identical ROHS3 compliance, REACH unaffected status, and EAR99 export classification. No compliance barriers exist for substitution.