Equivalent & Substitute Parts for 92042012C

Part Overview

The 92042012C is an 8:1 multiplexer/demultiplexer IC manufactured by Vishay Siliconix, featuring 100Ohm on-state resistance in a 20-LCC package. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part operates with dual supply voltages (±15V) and is suitable for analog signal switching applications requiring low on-state resistance and fast switching times.

Key Parameters

Parameter	Value
Multiplexer/Demultiplexer Circuit	8:1
Number of Circuits	1
On-State Resistance (Max)	100Ohm
Channel-to-Channel Matching (ΔRon)	15Ohm (Max)
Voltage - Supply, Dual (V±)	±15V
Switch Time (Ton, Toff) (Max)	150ns, 150ns
Charge Injection	20pC
Channel Capacitance (CS(off), CD(off))	3pF, 26pF
Current - Leakage (IS(off)) (Max)	500pA
Operating Temperature	-55°C ~ 125°C (TA)
Package / Case	20-LCC (8.89x8.89)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 92042012C is determined by the following critical parameters:

Multiplexer Configuration: 8:1 topology (mandatory match)
On-State Resistance: 100Ohm maximum (mandatory match)
Number of Circuits: 1 circuit (mandatory match)
Switch Time: 150ns maximum for both Ton and Toff (mandatory match)
Leakage Current: 500pA maximum (mandatory match)
Supply Voltage Compatibility: Dual supply operation at ±15V (mandatory for primary substitute); single or dual supply at compatible voltage ranges acceptable for secondary substitutes
Mounting Type: Surface mount (mandatory match)

Two substitute parts meet these criteria with varying degrees of parameter alignment:

DG408DY-T1-E3 (Vishay Siliconix): Maintains identical core switching specifications (8:1, 100Ohm, 150ns) with active product status. Package differs (16-SOIC vs. 20-LCC), requiring PCB redesign. Supply voltage range is broader (±5V ~ 20V), encompassing the original ±15V requirement.

ADG428BPZ (Analog Devices Inc.): Maintains identical core switching specifications (8:1, 100Ohm, 150ns) with active product status and 20-LCC package compatibility. Supply voltage includes ±15V dual operation. Channel-to-channel matching is superior (10Ohm vs. 15Ohm), and charge injection is lower (4pC vs. 20pC).

Parameter Comparison

Parameter	92042012C (Main)	DG408DY-T1-E3	ADG428BPZ
Manufacturer	Vishay Siliconix	Vishay Siliconix	Analog Devices Inc.
Multiplexer/Demultiplexer Circuit	8:1	8:1	8:1
Number of Circuits	1	1	1
On-State Resistance (Max)	100Ohm	100Ohm	100Ohm
Channel-to-Channel Matching (ΔRon)	15Ohm (Max)	15Ohm (Max)	10Ohm
Voltage - Supply, Dual (V±)	±15V	±5V ~ 20V	±15V
Switch Time (Ton, Toff) (Max)	150ns, 150ns	150ns, 150ns	150ns, 150ns
Charge Injection	20pC	20pC	4pC
Channel Capacitance (CS(off), CD(off))	3pF, 26pF	3pF, 26pF	11pF, 40pF
Current - Leakage (IS(off)) (Max)	500pA	500pA	500pA
Operating Temperature	-55°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	20-LCC (8.89x8.89)	16-SOIC (0.154", 3.90mm Width)	20-LCC (9x9)
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

ADG428BPZ is the primary substitute for direct replacement applications. It maintains package compatibility (20-LCC), identical supply voltage specification (±15V), and all critical switching parameters. The part is active with ROHS3 compliance and REACH unaffected status. Superior electrical characteristics (lower channel-to-channel matching and charge injection) provide performance margin. Operating temperature range (-40°C ~ 85°C) is narrower than the original part; applications requiring -55°C operation require design review.

DG408DY-T1-E3 is suitable for applications where package redesign is acceptable. It provides active product status with ROHS3 compliance and broader supply voltage range (±5V ~ 20V). The 16-SOIC package requires PCB layout modification. Identical electrical specifications to the main part ensure functional compatibility in switching performance.

Both substitutes are active products with modern compliance certifications, addressing the obsolescence of the 92042012C.

Frequently Asked Questions (FAQ)

Q: Can DG408DY-T1-E3 replace 92042012C without circuit modification?

A: DG408DY-T1-E3 maintains identical switching specifications (8:1, 100Ohm, 150ns) and leakage current. However, the package differs (16-SOIC vs. 20-LCC), requiring PCB redesign and potential circuit layout changes. Pin configuration must be verified against the original design.

Q: What is the operating temperature difference between substitutes and the original part?

A: The 92042012C operates from -55°C ~ 125°C. Both DG408DY-T1-E3 and ADG428BPZ operate from -40°C ~ 85°C. Applications requiring operation below -40°C cannot use these substitutes without design modification or alternative component selection.

Q: Does ADG428BPZ require PCB layout changes?

A: ADG428BPZ uses a 20-LCC package (9x9mm), compared to the original 20-LCC (8.89x8.89mm). The slight size difference may require minor PCB footprint adjustment. Pin configuration compatibility must be confirmed with the original design documentation.

Q: Are both substitutes RoHS compliant?

A: Yes. Both DG408DY-T1-E3 and ADG428BPZ are ROHS3 compliant. The original 92042012C is RoHS non-compliant, making these substitutes suitable for applications with RoHS requirements.

Q: What is the significance of charge injection differences?

A: ADG428BPZ has lower charge injection (4pC vs. 20pC), reducing signal distortion in precision analog switching applications. DG408DY-T1-E3 maintains the original 20pC specification. Selection depends on application sensitivity to charge injection effects.

Q: Can these parts be used interchangeably in existing designs?

A: ADG428BPZ offers the closest compatibility due to package match and identical supply voltage. DG408DY-T1-E3 requires PCB redesign due to package change. Both require functional testing to confirm performance in the specific application circuit.

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