PI5A100QEX Equivalent & Substitute Parts

Part Overview

The PI5A100QEX is a 4-circuit SPDT analog switch IC manufactured by Diodes Incorporated, designed for general-purpose signal routing and multiplexing applications. This surface-mount component operates from a single 2V to 6V supply and features 10Ohm on-state resistance with 230MHz bandwidth capability. The part is currently in active production status with substantial inventory availability. Equivalent and substitute parts are identified for applications requiring alternative sourcing, extended lead times, or specific performance enhancements within compatible electrical and mechanical parameters.

Substiute Parts

PI5A100QEX

Diodes IncorporatedIn Stock: 17215PI5A100QEX Datasheet

Current PartRFQ

TS3A5018DBQR

Texas InstrumentsIn Stock: 17447TS3A5018DBQR Datasheet

MFR RecommendedRFQ

TS3L100DBQR

Texas InstrumentsIn Stock: 3939TS3L100DBQR Datasheet

MFR RecommendedRFQ

TS5L100DBQR

Texas InstrumentsIn Stock: 1741TS5L100DBQR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI5A100QEX is determined by the following critical parameters:

Primary Compatibility Criteria:

• Switch circuit configuration: SPDT
• Number of circuits: 4
• Multiplexer/demultiplexer circuit: 2:1
• Package type: 16-SSOP surface mount
• On-state resistance: 10Ohm nominal (maximum 10Ohm acceptable)
• Operating temperature range: Minimum -40°C to 85°C coverage

Secondary Performance Criteria:

• Supply voltage range must overlap with 2V ~ 6V
• Bandwidth performance: 230MHz or greater
• RoHS3 compliance required

The substitute parts listed below meet these core electrical and mechanical requirements while offering variations in performance characteristics such as switching speed, leakage current, and supply voltage optimization.

Parameter Comparison

Engineering Selection Recommendations

TS3A5018DBQR (Primary Substitute)

This Texas Instruments part maintains full compatibility with the PI5A100QEX across all critical parameters. The TS3A5018DBQR operates within the same -40°C to 85°C temperature range and meets ROHS3 compliance. It offers improved performance characteristics including faster switching times (8ns/6.5ns versus 15ns/7ns), higher bandwidth (300MHz), and lower leakage current (100nA typical). However, the supply voltage range is narrower (1.65V ~ 3.6V), requiring verification that your application operates within this window. This part is in active production status with strong inventory availability.

TS3L100DBQR (Conditional Substitute)

This part shares the same 4-circuit SPDT 2:1 configuration and 16-SSOP package. It provides superior bandwidth (350MHz) but has a narrower supply voltage range (3V ~ 3.6V) and reduced operating temperature range (0°C ~ 70°C). The on-state resistance is higher at 15Ohm maximum. This part is suitable only for applications operating within 3V to 3.6V supply and 0°C to 70°C temperature limits. Product status is active with moderate inventory.

TS5L100DBQR (Limited Substitute)

This part is designated Last Time Buy status, indicating discontinued production with limited remaining inventory (1667 pcs). While it maintains the core 4-circuit SPDT 2:1 configuration and 16-SSOP package, it operates at a fixed 6V to 6.5V supply range with 19Ohm maximum on-state resistance and 0°C to 70°C temperature range. This part is suitable only for 6V-supply applications with relaxed temperature requirements and should be avoided for new designs due to end-of-life status.

Frequently Asked Questions (FAQ)

Q: Can TS3A5018DBQR replace PI5A100QEX in all applications?

A: TS3A5018DBQR is electrically compatible for applications operating within its 1.65V to 3.6V supply voltage range. If your circuit operates at 2V to 3.6V, this part is a direct substitute with improved performance. If your application requires operation above 3.6V, this part is not suitable. Verify your supply voltage specification before selection.

Q: What is the key difference between TS3L100DBQR and TS5L100DBQR?

A: Both parts are networking-optimized variants with identical 350MHz bandwidth and 16-SSOP packaging. The primary differences are supply voltage (TS3L100: 3V ~ 3.6V; TS5L100: 6V ~ 6.5V) and product status (TS3L100: Active; TS5L100: Last Time Buy). Select based on your supply voltage requirement. Avoid TS5L100DBQR for new designs.

Q: Are all substitute parts pin-compatible with PI5A100QEX?

A: All listed substitutes use the 16-SSOP package with identical 0.154" width and 3.90mm body dimensions. Pin-level compatibility must be verified against the specific application schematic, as functional pin assignments may differ between manufacturers despite identical package types.

Q: Which substitute offers the best performance improvement?

A: TS3A5018DBQR provides the most significant performance enhancement with 300MHz bandwidth (versus 230MHz), faster switching times (8ns/6.5ns versus 15ns/7ns), and lower leakage current (100nA versus 10µA typical). However, this improvement is only applicable within its 1.65V to 3.6V supply range.

Q: Can I use TS3L100DBQR or TS5L100DBQR in applications requiring -40°C operation?

A: No. Both parts have a minimum operating temperature of 0°C. If your application requires -40°C operation, only PI5A100QEX or TS3A5018DBQR are suitable, as both support -40°C to 85°C range.

Q: What does "Last Time Buy" status mean for TS5L100DBQR?

A: Last Time Buy indicates the manufacturer has discontinued production. Remaining inventory is limited (1667 pcs available). This part should not be selected for new designs or applications with long production lifecycles. Use only if existing designs are locked to this part number and immediate replacement is not feasible.