74F244MSA Equivalent & Substitute Parts

Part Overview

The 74F244MSA is a non-inverting buffer IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement continuity. The 74F244 series logic buffer remains functionally relevant in legacy systems and new designs requiring compatible TTL-compatible buffer solutions.

Substiute Parts

74F244MSA

onsemiIn Stock: 114974F244MSA Datasheet

Current PartRFQ

SN74F244DBR

Texas InstrumentsIn Stock: 2793SN74F244DBR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F244MSA with the SN74F244DBR is based on strict equivalence of the following critical parameters:

• Logic Function: Both parts implement identical non-inverting buffer logic with 2 elements and 4 bits per element
• Output Configuration: Both provide 3-state output capability
• Supply Voltage Range: Both operate within 4.5V ~ 5.5V
• Operating Temperature Range: Both support 0°C ~ 70°C (TA)
• Package Specification: Both use 20-SSOP surface mount packaging with identical physical dimensions (0.209", 5.30mm Width)
• Series Classification: Both belong to the 74F logic family

The SN74F244DBR is manufactured by Texas Instruments and maintains active product status, providing procurement availability where the obsolete 74F244MSA is no longer supplied.

Parameter Comparison

Engineering Selection Recommendations

The SN74F244DBR from Texas Instruments is the direct functional equivalent for the obsolete 74F244MSA. Both parts share identical logic specifications, package geometry, and electrical operating parameters within the 4.5V ~ 5.5V supply range and 0°C ~ 70°C temperature window.

The SN74F244DBR maintains active product status and ROHS3 compliance, supporting modern procurement and regulatory requirements. The output high current specification differs (15mA versus 3mA), which may require circuit-level verification in applications with specific current-sinking requirements, though both values remain within standard TTL buffer operating margins.

Frequently Asked Questions (FAQ)

Q: Can the SN74F244DBR directly replace the 74F244MSA in existing designs?

A: Yes. Both parts implement identical 74F logic buffer functionality with matching 20-SSOP package specifications and electrical operating ranges. Pin-for-pin compatibility is maintained.

Q: What is the significance of the output high current difference (3mA vs. 15mA)?

A: The SN74F244DBR provides higher output current capability. This difference should be evaluated in applications where output loading or current-sinking requirements are critical design parameters. Both values conform to 74F series specifications.

Q: Is the SN74F244DBR RoHS compliant?

A: Yes. The SN74F244DBR is ROHS3 compliant. RoHS status for the 74F244MSA was not specified in available documentation.

Q: Are there packaging format options for the SN74F244DBR?

A: The SN74F244DBR is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for different procurement and assembly workflows.

Q: Do both parts meet REACH regulatory requirements?

A: Yes. Both the 74F244MSA and SN74F244DBR are REACH Unaffected, indicating compliance with REACH substance restrictions.