N74F244DB Equivalent & Substitute Parts

Part Overview

The N74F244DB is a non-inverting buffer logic integrated circuit manufactured by NXP USA Inc., designed for 2 element, 4-bit per element configurations with 3-state output capability. This component operates within the 74F logic family and is rated for 4.5V to 5.5V supply voltage with an operating temperature range of 0°C to 70°C.

The N74F244DB carries an Obsolete product status, making identification of functionally equivalent alternatives essential for ongoing system support, maintenance, and new design implementations. Direct substitutes from active manufacturers ensure continued availability and supply chain reliability.

Substiute Parts

N74F244DB,118

NXP USA Inc.In Stock: 946N74F244DB,118 Datasheet

Current PartRFQ

SN74F244DB

Texas InstrumentsIn Stock: 2450SN74F244DB Datasheet

DirectRFQ

SN74F244DBR

Texas InstrumentsIn Stock: 2793SN74F244DBR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the N74F244DB is determined by strict equivalence across the following critical parameters:

• Logic Type: Buffer, Non-Inverting
• Number of Elements: 2
• Number of Bits per Element: 4
• Output Type: 3-State
• Current ratings: 15mA (Output High), 64mA (Output Low)
• Voltage Supply range: 4.5V ~ 5.5V
• Operating Temperature: 0°C ~ 70°C
• Package configuration: 20-SSOP with identical physical dimensions
• Mounting Type: Surface Mount

The substitute parts identified below maintain identical electrical and mechanical specifications, ensuring direct functional replacement without circuit redesign or board layout modification.

Parameter Comparison

Engineering Selection Recommendations

Both SN74F244DB and SN74F244DBR from Texas Instruments provide complete functional equivalence to the obsolete N74F244DB. Selection between these alternatives is determined by product lifecycle status and packaging requirements:

SN74F244DB carries Last Time Buy status, indicating limited future availability. This part maintains Tube packaging and is suitable for applications where existing inventory management practices align with end-of-life procurement strategies.

SN74F244DBR maintains Active product status with ongoing manufacturing support. This part is supplied in Cut Tape and Digi-Reel® packaging formats, providing flexibility for both manual assembly and automated production environments. Active status ensures long-term supply chain continuity and is the preferred selection for new designs and systems requiring extended component availability.

All three parts maintain identical electrical performance, thermal characteristics, and compliance certifications (ROHS3, REACH Unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can SN74F244DB and SN74F244DBR be used interchangeably with N74F244DB?

A: Yes. Both Texas Instruments parts are direct functional equivalents. All three components share identical logic type, element configuration, output characteristics, voltage supply range, operating temperature, and 20-SSOP package dimensions. No circuit modifications or board layout changes are required.

Q: What is the difference between SN74F244DB and SN74F244DBR?

A: The primary differences are product status and packaging format. SN74F244DB is Last Time Buy status supplied in Tube packaging. SN74F244DBR is Active status supplied in Cut Tape and Digi-Reel® packaging. Electrical specifications and package dimensions are identical.

Q: Why is the N74F244DB listed as Obsolete?

A: Obsolete status indicates the part is no longer manufactured by NXP USA Inc. and existing inventory is limited. Functionally equivalent alternatives from active manufacturers ensure continued system support and component availability.

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

A: No. All three parts maintain identical RoHS3 compliance, REACH Unaffected status, and EAR99 export classification. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all variants.

Q: Which substitute part should be selected for new designs?

A: SN74F244DBR is recommended for new designs due to Active product status, ensuring long-term manufacturing support and supply availability. Cut Tape and Digi-Reel® packaging options support both manual and automated assembly processes.

Q: Are the 20-SSOP packages physically identical?

A: Yes. All three parts use 20-SSOP packaging with 0.209" width and 5.30mm dimensions. Direct board-level substitution is possible without layout modifications.