PI5C3251LE Equivalent & Substitute Parts

Part Overview

The PI5C3251LE is a Multiplexer/Demultiplexer logic IC with a 1 x 8:1 circuit configuration, manufactured by Diodes Incorporated in a 16-TSSOP surface mount package. This component is classified as Obsolete, making substitute parts necessary for new designs and ongoing production requirements. The PI5C3251LE operates from a single 4V to 5.5V supply and functions across the -40°C to 85°C temperature range, serving applications requiring high-speed analog or digital signal routing.

Substiute Parts

PI5C3251LE

Diodes IncorporatedIn Stock: 872PI5C3251LE Datasheet

Current PartRFQ

CBT3251PW,118

Nexperia USA Inc.In Stock: 3157CBT3251PW,118 Datasheet

MFR RecommendedRFQ

SN74CBT3251PW

Texas InstrumentsIn Stock: 2952SN74CBT3251PW Datasheet

MFR RecommendedRFQ

SN74CBT3251PWR

Texas InstrumentsIn Stock: 45281SN74CBT3251PWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PI5C3251LE is determined by strict equivalence across the following parameters:

• Circuit type and configuration (1 x 8:1 Multiplexer/Demultiplexer)
• Package format (16-TSSOP surface mount)
• Voltage supply range compatibility (minimum 4V operation required)
• Operating temperature range (-40°C to 85°C)
• RoHS and environmental compliance status

The three qualified substitute parts—CBT3251PW,118 (Nexperia), SN74CBT3251PW (Texas Instruments), and SN74CBT3251PWR (Texas Instruments)—meet all electrical and mechanical requirements for direct substitution. All substitute parts operate within the 4.5V to 5.5V supply range, which overlaps with the PI5C3251LE specification and maintains functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the PI5C3251LE, the following selection criteria apply based on product status and availability:

SN74CBT3251PWR (Texas Instruments) is the primary recommendation. This part maintains Active product status, ensuring long-term availability and manufacturing support. It offers the highest inventory level (45200 units) and is available in Cut Tape and Digi-Reel packaging formats, supporting both prototype and production volume requirements.

CBT3251PW,118 (Nexperia) serves as a secondary option with Active status and substantial inventory (3113 units). This part is supplied in Tape & Reel format, suitable for automated assembly processes.

SN74CBT3251PW (Texas Instruments) is available but carries Last Time Buy status, indicating limited future availability. This part should be considered only when specific packaging requirements (Tube format) are mandatory or when supply chain constraints limit access to the primary recommendation.

All three substitute parts are ROHS3 compliant and carry MSL 1 ratings, matching the environmental and handling specifications of the original PI5C3251LE.

Frequently Asked Questions (FAQ)

Q: Can SN74CBT3251PWR directly replace PI5C3251LE in existing designs?

A: Yes. Both parts share identical circuit configuration (1 x 8:1), package format (16-TSSOP), operating temperature range (-40°C to 85°C), and RoHS compliance status. The substitute operates within a 4.5V to 5.5V supply range, which is compatible with the PI5C3251LE specification of 4V to 5.5V. Pin-to-pin compatibility is maintained.

Q: What is the difference between the three substitute parts?

A: All three substitutes are electrically and mechanically equivalent. The differences are: manufacturer (Nexperia vs. Texas Instruments), product status (Active vs. Last Time Buy), packaging format (Tape & Reel, Tube, or Cut Tape/Digi-Reel), and inventory availability. Selection depends on supply chain requirements and packaging preferences for assembly processes.

Q: Why does the PI5C3251LE show a lower voltage minimum (4V) compared to substitutes (4.5V)?

A: The PI5C3251LE specification allows operation down to 4V, while substitute parts specify 4.5V minimum. For applications operating below 4.5V, the original PI5C3251LE may be required. For standard 5V logic applications, all parts are fully compatible.

Q: Is the 16-TSSOP package identical across all parts?

A: Yes. All parts use the 16-TSSOP package with 0.173" width and 4.40mm body width. PCB footprints and land patterns are identical, requiring no layout modifications for substitution.

Q: What packaging options are available for production?

A: SN74CBT3251PWR is available in Cut Tape and Digi-Reel formats for high-volume automated assembly. CBT3251PW,118 is supplied in Tape & Reel format. SN74CBT3251PW is available in Tube format. Select based on your assembly equipment and volume requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts carry ROHS3 compliance certification, matching the environmental standards of the PI5C3251LE. All parts also maintain MSL 1 (Unlimited) moisture sensitivity ratings.