DS2148T Equivalent & Substitute Parts

Part Overview

The DS2148T is a Telecom Interface IC functioning as a Line Interface Unit (LIU) in 44-TQFP surface mount packaging. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement. The DS2148T operates within a 4.75V to 5.25V supply voltage range with 95mA current consumption and supports operating temperatures from 0°C to 70°C. Due to its obsolete status, sourcing active alternatives is critical for new designs and production continuity.

Substiute Parts

DS2148T

Analog Devices Inc./Maxim IntegratedIn Stock: 2302DS2148T Datasheet

Current PartRFQ

DS2148T+

Analog Devices Inc./Maxim IntegratedIn Stock: 1127DS2148T+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS2148T is determined by strict equivalence across the following critical parameters:

• Functional equivalence: Line Interface Unit (LIU) interface type
• Electrical compatibility: Identical supply voltage range (4.75V ~ 5.25V) and current consumption (95mA)
• Thermal compatibility: Matching operating temperature range (0°C ~ 70°C)
• Package compatibility: Identical 44-TQFP (10x10) surface mount package
• Pin configuration: Same number of circuits (1) and interface designation

The DS2148T+ meets all substitution criteria as a direct equivalent. The primary distinction is product status: DS2148T+ is active and available, whereas DS2148T is obsolete. Both parts share identical electrical specifications, thermal ratings, and physical packaging.

Parameter Comparison

Engineering Selection Recommendations

The DS2148T+ is the direct active equivalent for the obsolete DS2148T. Selection of DS2148T+ is based on:

• Product availability: DS2148T+ maintains active product status with current manufacturing support, whereas DS2148T is obsolete and subject to supply discontinuation
• Regulatory compliance: DS2148T+ achieves ROHS3 compliance, providing enhanced environmental and regulatory alignment for new designs
• Electrical and thermal equivalence: Both parts maintain identical supply voltage (4.75V ~ 5.25V), current consumption (95mA), and operating temperature range (0°C ~ 70°C)
• Physical compatibility: Identical 44-TQFP (10x10) package ensures direct PCB layout compatibility without redesign
• Certification alignment: Both parts share identical REACH and ECCN classifications, maintaining consistent regulatory status

For designs currently using DS2148T, transition to DS2148T+ requires no circuit modifications or board layout changes.

Frequently Asked Questions (FAQ)

Q: Can DS2148T+ be used as a direct replacement for DS2148T?

A: Yes. DS2148T+ is electrically and mechanically equivalent to DS2148T. Both parts operate at identical supply voltages (4.75V ~ 5.25V), current consumption (95mA), and temperature ranges (0°C ~ 70°C). The 44-TQFP (10x10) package is identical, requiring no PCB modifications.

Q: What is the primary difference between DS2148T and DS2148T+?

A: The primary differences are product status and RoHS compliance. DS2148T is obsolete, while DS2148T+ is active. DS2148T+ achieves ROHS3 compliance, whereas DS2148T is RoHS non-compliant. All electrical and thermal specifications remain identical.

Q: Are there packaging differences between these parts?

A: The base package type (44-TQFP 10x10) is identical. DS2148T is supplied in standard packaging, while DS2148T+ is supplied in Tray packaging. Both are surface mount configurations with no functional impact on circuit performance.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both DS2148T and DS2148T+ carry MSL 3 rating with a 168-hour floor life. Standard moisture control procedures during storage and handling apply to both parts.

Q: Are there any supply voltage or current differences?

A: No. Both parts operate identically at 4.75V to 5.25V supply voltage with 95mA current consumption. No circuit adjustments are required when substituting between these parts.