DG442DY Equivalent & Substitute Parts

Part Overview

The DG442DY is a 4-circuit SPST-NO analog switch IC manufactured by Vishay Siliconix, housed in a 16-SOIC surface mount package. This part features 85Ohm on-state resistance, dual supply voltage capability (±15V), and operates across the industrial temperature range of -40°C to 85°C. The DG442DY is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts must maintain functional compatibility across switching characteristics, package form factor, and electrical performance parameters.

Key Parameters

Parameter	DG442DY Value	Unit
Switch Circuit Type	SPST - NO	—
Number of Circuits	4	—
Multiplexer/Demultiplexer Circuit	1:1	—
On-State Resistance (Max)	85	Ohm
Channel-to-Channel Matching (ΔRon Max)	4	Ohm
Voltage - Supply, Single (V+)	12	V
Voltage - Supply, Dual (V±)	±15	V
Switch Time Ton (Max)	250	ns
Switch Time Toff (Max)	210	ns
Charge Injection	-1	pC
Channel Capacitance CS(off)	4	pF
Channel Capacitance CD(off)	4	pF
Current - Leakage IS(off) (Max)	500	pA
Crosstalk	-100	dB @ 1MHz
Operating Temperature	-40 to 85	°C
Package / Case	16-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	Non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the DG442DY is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Switch circuit topology: SPST - NO (Single Pole Single Throw - Normally Open)
Circuit count: 4 independent circuits
Multiplexer configuration: 1:1
Package form factor: 16-SOIC surface mount
Operating temperature range: Minimum -40°C to 85°C
Supply voltage compatibility: Dual supply ±15V operation

Secondary Compatibility Parameters:

On-state resistance: 85Ohm nominal (tolerance range 70–160Ohm acceptable for applications with relaxed impedance requirements)
Leakage current: 500pA maximum
Crosstalk performance: -100dB @ 1MHz or better
Channel capacitance: 4pF or lower
Switch timing: Ton/Toff within 250ns/210ns envelope

Substitutes are grouped into three categories based on on-state resistance performance: low-resistance variants (70Ohm), nominal-resistance variants (85Ohm), and higher-resistance variants (135–160Ohm). Selection depends on application impedance requirements and supply voltage constraints.

Parameter Comparison

Part Number	Manufacturer	Ron (Max) Ohm	V+ (V)	V± (V)	Ton/Toff (ns)	Charge Injection (pC)	IS(off) (pA)	Crosstalk (dB @ 1MHz)	Temp Range (°C)	RoHS Status	Product Status
DG442DY	Vishay Siliconix	85	12	±15	250/210	-1	500	-100	-40 to 85	Non-compliant	Obsolete
DG442DY-E3	Vishay Siliconix	85	12	±15	250/210	-1	500	-100	-40 to 85	ROHS3 Compliant	Active
ADG442BRZ	Analog Devices Inc.	70	12	±15	110/60	1	500	-100	-40 to 85	ROHS3 Compliant	Active
ADG442BRZ-REEL	Analog Devices Inc.	70	12	±15	110/60	1	500	-100	-40 to 85	ROHS3 Compliant	Active
ALD4202MSCL	Advanced Linear Devices Inc.	135	3–12	±1.5–6	240/130	1	100	-90	0 to 70	ROHS3 Compliant	Active
ALD4212SCL	Advanced Linear Devices Inc.	135	3–12	±1.5–6	130/130	0.2	100	-90	-40 to 85	ROHS3 Compliant	Active
DG442DYZ	Renesas Electronics Corporation	85	5–34	±5–22	250/210	-1	500	-100	-40 to 85	ROHS3 Compliant	Active
DG442DYZ-T	Renesas Electronics Corporation	85	5–34	±5–22	250/210	-1	500	-100	-40 to 85	ROHS3 Compliant	Active
MAX4512CSE+	Analog Devices Inc./Maxim Integrated	160	9–36	±4.5–18	500/400	1.5	500	-66	0 to 70	ROHS3 Compliant	Active
MAX4512ESE+	Analog Devices Inc./Maxim Integrated	160	9–36	±4.5–18	500/400	1.5	500	-66	-40 to 85	ROHS3 Compliant	Active
MAX4512ESE+T	Analog Devices Inc./Maxim Integrated	160	9–36	±4.5–18	500/400	1.5	500	-66	-40 to 85	ROHS3 Compliant	Active

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance):

DG442DY-E3 is the direct active replacement for the obsolete DG442DY. Both parts share identical electrical specifications: 85Ohm on-state resistance, ±15V dual supply operation, and -40°C to 85°C temperature range. DG442DY-E3 achieves ROHS3 compliance and maintains the same 16-SOIC package footprint. This part is recommended for designs requiring no circuit modification.

Low-Resistance Substitutes (70Ohm On-State Resistance):

ADG442BRZ and ADG442BRZ-REEL (Analog Devices Inc.) offer improved switching speed (110ns/60ns versus 250ns/210ns) and lower on-state resistance (70Ohm). Both maintain ±15V dual supply compatibility and -40°C to 85°C operation. These parts are suitable for applications where reduced channel impedance and faster switching are beneficial. Packaging differs: ADG442BRZ is supplied in tube; ADG442BRZ-REEL is supplied in cut tape and Digi-Reel format.

Higher-Resistance Substitutes (135Ohm On-State Resistance):

ALD4202MSCL and ALD4212SCL (Advanced Linear Devices Inc.) feature 135Ohm on-state resistance with extended supply voltage flexibility (3V–12V single supply, ±1.5V–6V dual supply). ALD4212SCL extends the operating temperature to -40°C to 85°C and offers superior charge injection performance (0.2pC). ALD4202MSCL operates 0°C to 70°C. Both parts are suitable for low-voltage applications where the DG442DY's ±15V requirement is not needed.

Extended Supply Voltage Substitutes (85Ohm On-State Resistance):

DG442DYZ and DG442DYZ-T (Renesas Electronics Corporation) maintain 85Ohm on-state resistance and identical switching characteristics to the original DG442DY but extend supply voltage range to 5V–34V (single) and ±5V–22V (dual). These parts are active and ROHS3 compliant. DG442DYZ is supplied in tube; DG442DYZ-T is supplied in tape and reel format. Selection depends on packaging requirements and supply voltage constraints.

Higher-Impedance Substitutes (160Ohm On-State Resistance):

MAX4512CSE+, MAX4512ESE+, and MAX4512ESE+T (Analog Devices Inc./Maxim Integrated) feature 160Ohm on-state resistance and extended supply voltage range (9V–36V single, ±4.5V–18V dual). Switch timing is slower (500ns/400ns). MAX4512CSE+ operates 0°C to 70°C; MAX4512ESE+ and MAX4512ESE+T operate -40°C to 85°C. These parts are suitable for high-voltage applications where the DG442DY's ±15V maximum is insufficient. Packaging: MAX4512CSE+ and MAX4512ESE+ in tube; MAX4512ESE+T in tape and reel.

All substitute parts are ROHS3 compliant and carry active product status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can DG442DY-E3 be used as a direct drop-in replacement for DG442DY?

A: Yes. DG442DY-E3 is electrically and mechanically identical to DG442DY. Both share 85Ohm on-state resistance, ±15V dual supply operation, identical switching times, and -40°C to 85°C temperature range. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant). No circuit modification is required.

Q: What is the difference between ADG442BRZ and ADG442BRZ-REEL?

A: Both parts are electrically identical. The difference is packaging format. ADG442BRZ is supplied in tube packaging; ADG442BRZ-REEL is supplied in cut tape and Digi-Reel format. Selection depends on assembly process requirements and volume. Electrical performance is identical.

Q: Can I use ALD4212SCL in place of DG442DY?

A: ALD4212SCL is functionally compatible but with design considerations. On-state resistance is higher (135Ohm versus 85Ohm), which increases channel impedance. Supply voltage range is narrower (3V–12V single, ±1.5V–6V dual versus 12V single, ±15V dual). Operating temperature range matches (-40°C to 85°C). Use ALD4212SCL only if your application can tolerate higher channel impedance and operates within the specified supply voltage range.

Q: Why do DG442DYZ and DG442DYZ-T have extended supply voltage ratings?

A: DG442DYZ and DG442DYZ-T are manufactured by Renesas Electronics Corporation and feature extended supply voltage specifications (5V–34V single, ±5V–22V dual) compared to the original Vishay DG442DY (12V single, ±15V dual). This extended range accommodates applications requiring higher supply voltages. Electrical switching characteristics remain identical.

Q: Is MAX4512ESE+ suitable for ±15V dual supply operation?

A: Yes. MAX4512ESE+ supports ±4.5V to ±18V dual supply operation, which encompasses the ±15V requirement. However, on-state resistance is higher (160Ohm versus 85Ohm), and switching speed is slower (500ns/400ns versus 250ns/210ns). Use MAX4512ESE+ only if your application can tolerate these performance trade-offs or requires the extended supply voltage range (9V–36V single supply).

Q: What is the significance of charge injection in these parts?

A: Charge injection affects signal integrity in precision analog switching applications. DG442DY exhibits -1pC charge injection. ADG442BRZ shows +1pC. ALD4212SCL shows +0.2pC. Lower absolute charge injection values reduce signal distortion. For applications sensitive to charge injection, compare specifications against your circuit requirements.

Q: Can I mix different substitute parts in the same design?

A: All substitute parts maintain the same 16-SOIC package footprint and SPST-NO 4-circuit topology, allowing physical interchangeability on the PCB. However, electrical parameter differences (on-state resistance, supply voltage range, switching speed, charge injection) may affect circuit performance. Verify that all selected parts meet your application's electrical requirements before mixing in production.

Q: Which substitute offers the best low-voltage performance?

A: ALD4202MSCL and ALD4212SCL support the lowest supply voltages (3V–12V single, ±1.5V–6V dual). For applications operating below 5V, these parts are the only viable substitutes. ALD4212SCL is preferred for extended temperature range (-40°C to 85°C) and superior charge injection performance (0.2pC).

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging is used for lower-volume orders and manual assembly. Tape & reel (TR) and cut tape (CT) formats are used for automated pick-and-place assembly and higher volumes. Electrical performance is identical; packaging selection depends on manufacturing process and order quantity.

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