PI5L100Q Equivalent & Substitute Parts

Part Overview

The PI5L100Q is a telecommunications switch IC manufactured by Diodes Incorporated, designed for 4-channel Ethernet switching applications in 10/100 Base-T LAN environments. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement continuity. The part operates as a 2:1 multiplexer/demultiplexer with SPDT switching capability in a 16-QSOP surface mount package.

Key Parameters

Parameter	PI5L100Q
Manufacturer	Diodes Incorporated
Product Status	Obsolete
Number of Channels	4
Multiplexer/Demultiplexer Circuit	2:1
On-State Resistance (Max)	11.2Ω
Voltage - Supply, Single (V+)	6.2V
-3dB Bandwidth	216MHz
Operating Temperature	0°C ~ 70°C
Package / Case	16-SSOP (0.154", 3.90mm Width)
RoHS Status	RoHS non-compliant
Applications	Telecommunications, 10/100 Base-T LAN

Substitute Part Grouping Explanation

Substitution eligibility for the PI5L100Q is determined by the following critical parameters:

Package Compatibility: All substitutes must use 16-QSOP or 16-SSOP packaging (0.154", 3.90mm width) for mechanical and electrical compatibility
Circuit Configuration: 4-channel SPDT switch with 2:1 multiplexer/demultiplexer topology
Supply Voltage Range: Single supply operation; substitutes must accommodate the operating voltage envelope
Bandwidth Performance: Minimum -3dB bandwidth of 216MHz for signal integrity in Ethernet switching applications
On-State Resistance: Maximum on-state resistance determines signal attenuation; lower values provide improved performance margin
Operating Temperature Range: 0°C ~ 70°C minimum requirement for telecommunications applications
RoHS Compliance: Active substitutes must meet ROHS3 compliance for regulatory alignment

Substitutes are grouped into two categories: Analog Devices ADG774 series (superior performance characteristics) and Renesas QS4A205 series (high-bandwidth alternative), with Texas Instruments TS3L100/TS5L100 variants providing Ethernet-specific integration.

Parameter Comparison

Parameter	PI5L100Q	ADG774ABRQZ	ADG774ABRQZ-REEL7	QS4A205QG	QS4A205QG8	TS3L100DBQR	TS5L100DBQR
Manufacturer	Diodes Inc.	Analog Devices	Analog Devices	Renesas	Renesas	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Active	Active	Last Time Buy
Number of Circuits	4	4	4	4	4	4	4
Multiplexer/Demultiplexer Circuit	2:1	2:1	2:1	2:1	2:1	2:1	2:1
On-State Resistance (Max)	11.2Ω	4.6Ω	4.6Ω	17Ω	17Ω	15Ω	19Ω
Voltage - Supply, Single (V+)	6.2V	3V ~ 5V	3V ~ 5V	5V	5V	3V ~ 3.6V	6V ~ 6.5V
-3dB Bandwidth	216MHz	400MHz	400MHz	830MHz	830MHz	350MHz	350MHz
Switch Time (Ton, Toff) (Max)	—	12ns, 6ns	12ns, 6ns	6ns, 6ns	6ns, 6ns	—	—
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	16-SSOP	16-SSOP	16-SSOP	16-SSOP	16-SSOP	16-SSOP	16-SSOP
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

Primary Recommendation: ADG774ABRQZ or ADG774ABRQZ-REEL7

The Analog Devices ADG774 series represents the optimal substitute for PI5L100Q applications. Both variants maintain identical electrical specifications with superior performance margins: on-state resistance of 4.6Ω (versus 11.2Ω), bandwidth of 400MHz (versus 216MHz), and extended operating temperature range of -40°C ~ 85°C. Both variants are ROHS3 compliant and carry active product status with unlimited moisture sensitivity rating. The ADG774ABRQZ-REEL7 variant offers higher inventory availability (6270 units) with Cut Tape and Digi-Reel packaging options.

Secondary Recommendation: QS4A205QG or QS4A205QG8

The Renesas QS4A205 series provides the highest bandwidth performance at 830MHz with superior crosstalk isolation (-100dB @ 5MHz). On-state resistance of 17Ω exceeds the PI5L100Q specification but remains acceptable for most Ethernet switching applications. Both variants are ROHS3 compliant with active product status. QS4A205QG8 offers significantly higher inventory (16485 units) in Tape & Reel packaging.

Tertiary Recommendation: TS3L100DBQR

The Texas Instruments TS3L100DBQR maintains identical operating temperature range (0°C ~ 70°C) and Ethernet-specific feature set (10/100 Base-T). On-state resistance of 15Ω and bandwidth of 350MHz provide adequate performance for legacy telecommunications applications. ROHS3 compliance and active product status support long-term availability.

Not Recommended: TS5L100DBQR

The TS5L100DBQR carries Last Time Buy status, indicating discontinued production. Supply constraints and lack of long-term availability make this unsuitable for new designs or ongoing procurement.

Frequently Asked Questions (FAQ)

Q: Can ADG774ABRQZ directly replace PI5L100Q in existing designs?

A: Yes. Both components share identical 16-SSOP packaging, 4-channel SPDT configuration, and 2:1 multiplexer topology. The ADG774ABRQZ provides superior electrical performance with lower on-state resistance (4.6Ω vs 11.2Ω) and higher bandwidth (400MHz vs 216MHz). Pin-for-pin compatibility is maintained. Verify supply voltage compatibility in your application; ADG774ABRQZ operates at 3V ~ 5V versus PI5L100Q at 6.2V.

Q: What is the key difference between ADG774ABRQZ and ADG774ABRQZ-REEL7?

A: Both variants are electrically identical with matching specifications. The difference is packaging format: ADG774ABRQZ ships in Tube packaging, while ADG774ABRQZ-REEL7 uses Cut Tape and Digi-Reel format. Selection depends on procurement and assembly requirements. ADG774ABRQZ-REEL7 offers higher inventory availability.

Q: Why does QS4A205QG have higher on-state resistance (17Ω) than PI5L100Q (11.2Ω)?

A: The QS4A205 series prioritizes bandwidth performance (830MHz) and crosstalk isolation (-100dB @ 5MHz) over minimum on-state resistance. The 17Ω specification remains within acceptable limits for Ethernet switching applications where signal integrity and isolation are critical. Verify attenuation requirements in your specific circuit topology.

Q: Is TS3L100DBQR suitable for new telecommunications designs?

A: TS3L100DBQR is suitable for applications requiring identical operating temperature range (0°C ~ 70°C) and Ethernet feature integration. However, ADG774 series substitutes offer superior performance margins and extended temperature range (-40°C ~ 85°C), making them preferable for new designs requiring long-term support.

Q: What is the impact of switching from RoHS non-compliant PI5L100Q to ROHS3 compliant substitutes?

A: ROHS3 compliance eliminates restricted substances (lead, cadmium, mercury, hexavalent chromium, PBBs, PBDEs) from component manufacturing. All recommended substitutes meet ROHS3 standards, ensuring regulatory alignment with current environmental directives. No functional impact on circuit operation; compliance is a manufacturing and supply chain requirement.

Q: Can I use TS5L100DBQR as a substitute?

A: TS5L100DBQR is not recommended for new designs or ongoing procurement. The component carries Last Time Buy status, indicating production discontinuation. Existing inventory may be available through secondary channels, but long-term supply cannot be assured. Use ADG774 or QS4A205 series for sustained availability.

Q: How do moisture sensitivity levels affect component handling?

A: PI5L100Q and all ADG774/QS4A205 variants carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or assembly. TS3L100DBQR and TS5L100DBQR carry MSL 2 (1 Year), requiring controlled storage conditions and bake-out procedures if shelf life exceeds one year. For applications with extended storage requirements, ADG774 or QS4A205 series are preferable.

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