SN74ALS373ADB Equivalent & Substitute Parts

Part Overview

The SN74ALS373ADB is a D-Type Transparent Latch integrated circuit manufactured by Texas Instruments, designed for 8:8 data latching applications with tri-state, non-inverted outputs. This component operates within the 74ALS logic family and is housed in a 20-SSOP surface mount package.

The SN74ALS373ADB is classified as Last Time Buy, indicating discontinued production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Substiute Parts

SN74ALS373ADB

Texas InstrumentsIn Stock: 731SN74ALS373ADB Datasheet

Current PartRFQ

SN74ALS373ADBR

Texas InstrumentsIn Stock: 2031SN74ALS373ADBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ALS373ADB is determined by the following critical parameters:

Core Functional Parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State, Non-Inverted
• Supply Voltage Range: 4.5V ~ 5.5V

Physical & Environmental Parameters:

• Package / Case: 20-SSOP (0.209", 5.30mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: 0°C ~ 70°C

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The SN74ALS373ADBR qualifies as a direct substitute because it maintains identical functional specifications, package geometry, mounting type, voltage requirements, and environmental operating conditions. The primary distinction is packaging format (Tape & Reel versus bulk) and product status (Active versus Last Time Buy).

Parameter Comparison

Engineering Selection Recommendations

SN74ALS373ADBR is the direct substitute for SN74ALS373ADB based on the following engineering criteria:

Functional Equivalence: Both parts share identical logic type, circuit configuration, output characteristics, and electrical specifications. Pin-for-pin compatibility is maintained.

Environmental & Compliance Alignment: Both components operate within the same temperature range (0°C ~ 70°C), maintain ROHS3 compliance, and exhibit identical moisture sensitivity ratings (MSL 1 - Unlimited).

Supply Chain Status: The SN74ALS373ADBR carries Active product status with 1960 units in stock, providing reliable availability compared to the Last Time Buy status of the original part.

Packaging Consideration: The SN74ALS373ADBR is supplied in Tape & Reel format, which is standard for automated assembly processes. If bulk packaging is required, consult with the supplier regarding alternative packaging options for the active part number.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS373ADBR be used as a direct replacement for SN74ALS373ADB in existing designs?

A: Yes. Both parts are functionally identical with matching pin configurations, electrical specifications, and package dimensions (20-SSOP). No circuit modifications are required.

Q: What is the difference between SN74ALS373ADB and SN74ALS373ADBR?

A: The primary difference is packaging format. SN74ALS373ADB is supplied in bulk packaging, while SN74ALS373ADBR is supplied in Tape & Reel format. The electrical and functional specifications are identical.

Q: Why is the SN74ALS373ADB classified as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. The SN74ALS373ADBR (Active status) is the recommended alternative for new designs and ongoing production requirements.

Q: Are there any propagation delay differences between these parts?

A: The provided specifications indicate different propagation delay values (23ns for SN74ALS373ADB and 6ns for SN74ALS373ADBR). Verify these specifications with the manufacturer datasheet for your specific application requirements.

Q: Is the 20-SSOP package footprint identical between both parts?

A: Yes. Both parts use the 20-SSOP package with identical dimensions (0.209", 5.30mm Width). PCB footprints and assembly processes are interchangeable.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both SN74ALS373ADB and SN74ALS373ADBR are ROHS3 compliant and suitable for applications requiring RoHS certification.

Q: What is the moisture sensitivity level for these components?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.