74AC16244DL Equivalent & Substitute Parts

Part Overview

The 74AC16244DL is a Buffer, Non-Inverting logic IC featuring 4 elements with 4 bits per element and 3-state output capability. Manufactured by Texas Instruments in a 48-SSOP surface mount package, this component operates across a 3V to 5.5V supply voltage range with ±24mA output current capability. The part is currently in Last Time Buy status, indicating discontinued production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for ongoing production requirements.

Substiute Parts

74AC16244DL

Texas InstrumentsIn Stock: 64774AC16244DL Datasheet

Current PartRFQ

74AC16244DLR

Texas InstrumentsIn Stock: 1602974AC16244DLR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74AC16244DL is determined by strict equivalence across the following critical parameters:

• Logic function: Buffer, Non-Inverting configuration
• Element and bit architecture: 4 elements with 4 bits per element
• Output configuration: 3-State output capability
• Electrical performance: 24mA output current (both high and low states)
• Supply voltage range: 3V to 5.5V operation
• Package specification: 48-BSSOP surface mount form factor
• Thermal operating range: -40°C to 85°C
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected status

The 74AC16244DLR qualifies as a direct substitute based on identical electrical specifications, package dimensions, and functional architecture. The primary distinction is packaging format: the DL variant uses Tube packaging while the DLR variant uses Tape & Reel (TR) format. Both variants share the same base product number (74AC16244) and maintain full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 74AC16244DLR is the direct substitute for the 74AC16244DL. Both parts maintain identical electrical specifications, functional architecture, and physical package dimensions. The 74AC16244DL is designated Last Time Buy status, whereas the 74AC16244DLR carries Active product status with significantly higher inventory availability (15,981 pcs vs. 631 pcs).

Selection between these variants depends on procurement and assembly requirements. The DL variant in Tube packaging is suitable for lower-volume manual assembly or component kitting operations. The DLR variant in Tape & Reel format is optimized for automated pick-and-place assembly processes and high-volume production environments.

Both variants maintain full ROHS3 compliance and REACH Unaffected regulatory status, ensuring compatibility with environmental and hazardous substance restrictions. The unlimited Moisture Sensitivity Level (MSL 1) classification indicates no special storage or handling precautions are required beyond standard component storage practices.

Frequently Asked Questions (FAQ)

Q: Can the 74AC16244DLR directly replace the 74AC16244DL in existing designs?

A: Yes. The 74AC16244DLR is electrically and mechanically identical to the 74AC16244DL. Both parts share the same 48-BSSOP package footprint, pin configuration, and electrical performance specifications. No circuit modifications or PCB redesign is required.

Q: What is the difference between the DL and DLR packaging variants?

A: The DL variant uses Tube packaging, typically containing 25 units per tube, suitable for manual component handling and small-batch assembly. The DLR variant uses Tape & Reel (TR) packaging, optimized for automated assembly equipment. The electrical and functional specifications are identical.

Q: Why is the 74AC16244DL marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this specific part variant. The 74AC16244DLR in Tape & Reel format remains in active production and is the recommended long-term supply source.

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

A: No. Both the 74AC16244DL and 74AC16244DLR maintain identical ROHS3 compliance and REACH Unaffected status. Moisture Sensitivity Level (MSL 1) is identical for both variants.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution is determined by matching: logic function (Buffer, Non-Inverting), element count (4 elements), bit architecture (4 bits per element), output type (3-State), output current (24mA), supply voltage range (3V to 5.5V), operating temperature range (-40°C to 85°C), and package specification (48-BSSOP). All these parameters are identical between the DL and DLR variants.