SN74LS06DB Equivalent & Substitute Parts

Part Overview

The SN74LS06DB is a 6-channel inverter IC with open collector output configuration, manufactured by Texas Instruments in the 74LS logic series. This device is packaged in a 14-SSOP surface mount package and operates within a 4.5V to 5.5V supply voltage range. The SN74LS06DB is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain functional equivalence through matching logic type, channel configuration, open collector architecture, and electrical performance characteristics within specified operating parameters.

Substiute Parts

SN74LS06DB

Texas InstrumentsIn Stock: 2023SN74LS06DB Datasheet

Current PartRFQ

SN74LS06DBR

Texas InstrumentsIn Stock: 3654SN74LS06DBR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS06DB is determined by strict equivalence across the following critical parameters:

Logic Architecture: Both the main part and substitute must be 6-channel inverter ICs with open collector output configuration. This architecture is fundamental to the device function and cannot be altered.

Package Compatibility: The 14-SSOP surface mount package is a mandatory requirement. Pin count, pitch, and physical dimensions must match exactly to ensure PCB compatibility without redesign.

Electrical Performance: Supply voltage range, input logic levels, output current specifications, and propagation delay characteristics must fall within the specified operating envelope. These parameters define circuit timing and power delivery requirements.

Environmental and Compliance Standards: RoHS3 compliance and operating temperature range (0°C ~ 70°C) establish the baseline for industrial and commercial applications.

The SN74LS06DBR qualifies as a direct substitute based on matching logic type, channel count, open collector configuration, package format, and compliance certifications. Variations in specific electrical parameters (such as supply voltage tolerance and quiescent current) remain within acceptable substitution criteria when the core functional requirements are preserved.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS06DBR is the direct substitute for the discontinued SN74LS06DB. Both devices are manufactured by Texas Instruments and maintain identical logic architecture, package format, and core electrical specifications. The SN74LS06DBR carries active product status with confirmed inventory availability, ensuring supply chain continuity for new designs and production requirements.

Both parts maintain ROHS3 compliance and are suitable for industrial and commercial applications within the specified 0°C to 70°C operating temperature range. The SN74LS06DBR includes additional moisture sensitivity level (MSL) rating of 1 (Unlimited) and REACH Unaffected status, providing enhanced environmental documentation for regulated applications.

The supply voltage tolerance of the SN74LS06DBR (4.75V ~ 5.25V) is narrower than the SN74LS06DB (4.5V ~ 5.5V). Circuit designs must verify that the power supply regulation falls within the tighter tolerance band of the substitute part to ensure reliable operation.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS06DBR directly replace the SN74LS06DB without PCB modification?

A: Yes. Both devices use the 14-SSOP package with identical pin configuration and pitch. No PCB redesign is required for mechanical or electrical interface compatibility.

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

A: The SN74LS06DB is discontinued, while the SN74LS06DBR is an active product with current manufacturing and distribution. The SN74LS06DBR features a narrower supply voltage tolerance (4.75V ~ 5.25V versus 4.5V ~ 5.5V) and includes additional environmental certifications (MSL rating and REACH status).

Q: Are the propagation delay and output current specifications identical?

A: The maximum propagation delay (20ns @ 5V, 15pF) and output low current (40mA) are identical. The SN74LS06DB specifies output high current at 250µA, while the SN74LS06DBR does not provide this specification in the available data.

Q: Does the supply voltage tolerance difference affect circuit design?

A: Circuit designs must operate within the narrower tolerance band of the SN74LS06DBR (4.75V ~ 5.25V). If the original design relied on the extended lower tolerance of the SN74LS06DB (4.5V), power supply regulation must be verified to ensure compliance with the substitute part's specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the SN74LS06DB and SN74LS06DBR are ROHS3 compliant and suitable for applications requiring environmental compliance certification.

Q: What packaging options are available for the SN74LS06DBR?

A: The SN74LS06DBR is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both prototype and production volume requirements.