SN74LS244DBRG4 Equivalent & Substitute Parts

Part Overview

The SN74LS244DBRG4 is a Buffer, Non-Inverting logic IC manufactured by Texas Instruments, featuring 2 elements with 4 bits per element and 3-state output capability. This component operates within the 4.75V to 5.25V supply voltage range and is housed in a 20-SSOP surface mount package.

The SN74LS244DBRG4 is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains system functionality for applications requiring this buffer configuration.

Substiute Parts

SN74LS244DBRG4

Texas InstrumentsIn Stock: 828SN74LS244DBRG4 Datasheet

Current PartRFQ

SN74LS244DBR

Texas InstrumentsIn Stock: 6475SN74LS244DBR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LS244DBRG4 are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Logic Type: Buffer, Non-Inverting
• Number of Elements: 2
• Number of Bits per Element: 4
• Output Type: 3-State
• Current - Output High, Low: 15mA, 24mA
• Voltage - Supply: 4.75V ~ 5.25V
• Operating Temperature: 0°C ~ 70°C (TA)
• Package / Case: 20-SSOP (0.209", 5.30mm Width)
• Series: 74LS

The SN74LS244DBR meets all electrical and mechanical specifications required for direct substitution with the SN74LS244DBRG4. The primary difference is packaging format: the substitute is supplied in Tape & Reel (TR) configuration versus the original's standard packaging.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS244DBR is a direct parametric equivalent to the SN74LS244DBRG4. Both components are manufactured by Texas Instruments, share identical electrical specifications, and are housed in the same 20-SSOP package.

The SN74LS244DBR maintains active product status, ensuring ongoing availability and supply chain reliability. Both parts comply with ROHS3 and REACH requirements, with identical moisture sensitivity ratings.

The primary distinction is packaging format: the SN74LS244DBR is supplied in Tape & Reel (TR) configuration, which is standard for high-volume production environments. This packaging format does not affect component functionality or electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS244DBR replace the SN74LS244DBRG4 in existing designs?

A: Yes. The SN74LS244DBR is a parametric equivalent with identical electrical specifications, output characteristics, supply voltage range, operating temperature range, and 20-SSOP package dimensions. Direct substitution is supported.

Q: What is the difference between the two part numbers?

A: The SN74LS244DBRG4 and SN74LS244DBR differ only in packaging format. The SN74LS244DBR is supplied in Tape & Reel (TR) configuration, while the original uses standard packaging. The die and electrical performance are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings (MSL 1 - Unlimited). Compliance status is equivalent.

Q: Why is the original part discontinued?

A: The SN74LS244DBRG4 is discontinued at DiGi Electronics. The SN74LS244DBR remains in active production, providing continued availability for this buffer configuration.

Q: Does the Tape & Reel packaging affect circuit performance?

A: No. Tape & Reel packaging is a supply format used for automated assembly processes. The component itself, electrical characteristics, and performance are unchanged.

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

A: Substitution is determined by matching: logic type (Buffer, Non-Inverting), element count (2), bits per element (4), output type (3-State), output current ratings (15mA/24mA), supply voltage (4.75V ~ 5.25V), operating temperature (0°C ~ 70°C), and package type (20-SSOP).