TL317CDRE4 Equivalent & Substitute Parts

Part Overview

The TL317CDRE4 is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 100mA output current with an adjustable voltage range from 1.2V to 32V, making it suitable for precision power management circuits requiring low dropout regulation. The device is currently discontinued at DiGi Electronics, necessitating identification of equivalent substitute parts for ongoing design support and procurement.

Substiute Parts

TL317CDRE4

Texas InstrumentsIn Stock: 780TL317CDRE4 Datasheet

Current PartRFQ

TL317CDR

Texas InstrumentsIn Stock: 90847TL317CDR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL317CDRE4 is determined by strict equivalence across the following critical parameters:

• Output configuration (Positive)
• Output type (Adjustable)
• Voltage range (Input Max: 38V, Output Min: 1.2V, Output Max: 32V)
• Current rating (100mA)
• Package type (8-SOIC)
• Protection features (Over Current, Over Temperature)
• Operating temperature range (0°C ~ 125°C)
• Compliance certifications (ROHS3, REACH Unaffected)

The TL317CDR qualifies as a parametric equivalent based on identical electrical specifications and package configuration. Differences in packaging format (Cut Tape & Digi-Reel vs. standard packaging) and product status do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The TL317CDR is a direct parametric equivalent to the TL317CDRE4 and is suitable for substitution in all applications where the original part was specified. Both devices maintain identical electrical performance characteristics, thermal specifications, and regulatory compliance status (ROHS3 Compliant, REACH Unaffected).

The TL317CDR is currently available in higher inventory quantities (90,768 pcs) compared to the discontinued TL317CDRE4 (764 pcs remaining), making it the preferred selection for new procurement and design continuity. The packaging format difference (Cut Tape & Digi-Reel) does not affect functional performance and is a standard supply chain variation.

Frequently Asked Questions (FAQ)

Q: Can the TL317CDR be used as a direct replacement for the TL317CDRE4?

A: Yes. Both parts are identical in electrical specifications, output characteristics, and package configuration. The TL317CDR is a direct parametric equivalent suitable for all circuit applications where the TL317CDRE4 was originally specified.

Q: What is the difference between TL317CDRE4 and TL317CDR?

A: The primary differences are product status and packaging format. The TL317CDRE4 is discontinued at DiGi Electronics, while the TL317CDR is in Last Time Buy status. The TL317CDR is supplied in Cut Tape & Digi-Reel format, a standard supply chain variation that does not affect circuit performance.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist. Both parts share identical pin configurations, electrical ratings, and package dimensions (8-SOIC, 0.154" width). PCB layouts and circuit designs require no modification.

Q: What is the output voltage range for these regulators?

A: Both the TL317CDRE4 and TL317CDR support adjustable output voltage from 1.2V to 32V with a maximum input voltage of 38V and 100mA output current capability.

Q: Are these parts RoHS compliant?

A: Yes. Both the TL317CDRE4 and TL317CDR are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.