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Vishay Siliconix DG442DY
- Part No.:
- DG442DY
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG442DY.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,515
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Product details
Overview
DG442DY from Vishay Siliconix is a quad SPST normally open CMOS analog switch in 16-pin narrow SOIC package, featuring 50 Ω typical on-resistance, 150 ns typical turn-on time, and ±15 V dual-supply operation. It enables low-distortion signal routing in precision sample-and-hold circuits and battery-powered data acquisition systems.
For engineers reviewing the DG442DY datasheet, DG442DY pinout, DG442DY application, or DG442DY equivalent, key selection criteria include its 80 pA max off-leakage at full temperature range, TTL/CMOS-compatible digital inputs (0.8 V low / 2.4 V high), and guaranteed charge injection of –1 pC for pedestal error control in analog sampling.
Technical Context
The DG442DY implements four independent bidirectional analog switches fabricated on Vishay's high-voltage silicon-gate process with epitaxial latchup prevention. Each channel conducts equally in both directions when ON and blocks signals up to supply rails when OFF.
Its logic interface accepts standard TTL/CMOS voltage levels and drives internal transmission gates without external level shifting. The device supports dual-supply (±15 V) and single-supply (12 V) configurations, with analog signal range spanning full rail-to-rail under specified conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V (full rail-to-rail switching with ±15 V supplies) |
| rDS(on) Typ. | 50 Ω (low insertion loss, minimal signal attenuation in audio/data paths) |
| tON Typ. | 150 ns (supports >3 MHz switching rate in multiplexed acquisition) |
| Charge Injection | –1 pC (enables sub-12-bit accuracy in sample-and-hold applications) |
| ID(off) Max | 20 nA (ensures <0.1 mV error in high-impedance sensor front-ends) |
| Supply Voltage Range | ±15 V or +12 V single supply (flexible integration into mixed-signal systems) |
| Logic Thresholds | 0.8 V low / 2.4 V high (direct interface with 5 V microcontrollers and FPGAs) |
Pinout & Package
Package: 16-pin narrow-body SOIC (SO-16N), 1.27 mm pitch, JEDEC MS-012AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control input | Active-high logic enables corresponding switch; inverted logic for DG442 vs DG441 per datasheet Figure 2 |
| S1–S4 | Source terminal | Bidirectional analog path input/output; connects to signal source or load |
| D1–D4 | Drain terminal | Bidirectional analog path input/output; connects to signal destination or load |
| V+ | Positive supply | Accepts +12 V (single) or +15 V (dual); powers P-channel MOSFETs |
| V− | Negative supply | Accepts –15 V (dual only); powers N-channel MOSFETs |
| GND | Analog/digital reference | Common return for supplies and logic; must be low-impedance for noise control |
| NC | No connect | Pins 9, 10, 11, 13, 14, 15 are unconnected; must remain floating |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPST NO configuration | Four independent normally open switches enable discrete signal path activation without cross-talk coupling |
| Low on-resistance match | ≤5 Ω max mismatch between channels ensures consistent gain/attenuation across multiplexed channels |
| High off-isolation | 60 dB min at DC–1 MHz prevents signal bleed between inactive channels in multi-channel systems |
| Single-supply capability | Operates from +12 V only-eliminates need for negative rail in portable instrumentation |
| TTL/CMOS compatibility | Direct drive from 5 V logic without level shifters reduces BOM count and layout complexity |
Applications
| Audio Signal Routing | Portable Data Acquisition |
|---|---|
Use Scenario: Selecting between multiple microphone inputs in a field recorder with automatic gain control. IC Role / Device Role / Timing Role: DG442DY acts as a low-noise, low-distortion analog multiplexer enabling channel selection without signal degradation. Use Value: 50 Ω rDS(on) and <1 pC charge injection preserve audio fidelity and prevent clipping artifacts during switching. | Use Scenario: Scanning 8 thermocouple inputs into a single ADC in a handheld environmental monitor. IC Role / Device Role / Timing Role: DG442DY provides rail-to-rail analog switching with minimal offset error and leakage-induced drift. Use Value: 20 nA max off-leakage and ±15 V signal range maintain µV-level resolution across wide temperature ranges. |
| Sample-and-Hold Circuits | Medical Instrumentation |
Use Scenario: Capturing transient ECG waveforms with precise timing in a portable cardiac analyzer. IC Role / Device Role / Timing Role: DG442DY serves as the hold switch in an op-amp-based S/H circuit, triggered by microcontroller GPIO. Use Value: –1 pC charge injection limits pedestal error to <1 LSB in 12-bit systems using 1 nF hold capacitors. | Use Scenario: Isolating patient-connected sensor inputs from digital processing stages in a bedside EEG unit. IC Role / Device Role / Timing Role: DG442DY functions as a safety-critical analog gate, blocking fault currents while passing bio-potential signals. Use Value: 44 V max V+–V− rating and 25 V GND–V− withstand support reinforced isolation requirements per IEC 60601-1. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4618ESE+ | Higher rDS(on) (120 Ω typ.), lower supply voltage (±5.5 V max), no single-supply mode | Not suitable for ±15 V industrial sensors or 12 V battery systems | Select DG442DY for rail-to-rail analog range and single-supply flexibility |
| ADG442BRZ | Same pinout, identical rDS(on) and tON specs, but 100 pA max ID(off) vs DG442DY's 20 nA | Superior leakage performance for ultra-high-Z medical front-ends | Choose ADG442BRZ where sub-nA leakage dominates design margin |
Compared with MAX4618ESE+ and ADG442BRZ, the DG442DY uniquely balances ±15 V operation, 12 V single-supply capability, and 20 nA leakage-making it optimal for cost-sensitive industrial DAQ and portable test equipment where supply flexibility and moderate leakage tolerance coexist.
Availability
DG442DY is available at Aetrix Electronics and suitable for audio signal routing, portable data acquisition, sample-and-hold circuits, and medical instrumentation requiring stable component supply across extended temperature ranges.
Supply support for DG442DY includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay Siliconix is a global semiconductor manufacturer specializing in discrete power MOSFETs, analog switches, and high-reliability passive components.
The DG442DY belongs to Vishay's legacy analog switch product line, engineered for high-speed, low-error signal routing in precision measurement and industrial control systems.
FAQ
What is the maximum analog signal voltage range supported by the DG442DY?
The DG442DY supports an analog signal range of ±15 V when operated with ±15 V supplies, and 0–12 V with a +12 V single supply. This is confirmed in the Absolute Maximum Ratings table (Document Number 70053, page 2), where V+ to V– is rated at 44 V and analog signal range is specified as full rail-to-rail under test conditions. Exceeding these limits risks clamping or damage.
Does the DG442DY require external level-shifting circuitry when driven by 3.3 V logic?
No, the DG442DY does not support direct 3.3 V logic drive. Its digital inputs require TTL/CMOS-compatible thresholds: 0.8 V max for logic low and 2.4 V min for logic high. Driving with 3.3 V logic may result in undefined states unless the 3.3 V system guarantees ≥2.4 V high output. For 3.3 V microcontrollers, a simple resistor divider or buffer is recommended to ensure compliance with DG442DY input specifications.
Can the DG442DY be used in a single-supply +5 V system?
No, the DG442DY is not characterized or guaranteed for +5 V single-supply operation. Datasheet test conditions specify minimum +12 V (or ±15 V) for functional validation. At +5 V, rDS(on) increases significantly (>200 Ω), leakage rises, and switching times degrade beyond specification-per the Unipolar Supply section (page 4). Use DG442DY only in +12 V or ±15 V systems.
How does the DG442DY differ from the DG441DY in functionality?
The DG442DY is a quad SPST normally open (NO) switch, while the DG441DY is normally closed (NC). When all INx inputs are low, DG442DY channels are open (high impedance), whereas DG441DY channels conduct. This functional difference is explicitly stated in the first paragraph of the datasheet (page 1): "The DG441 has a normally closed function. The DG442 has a normally open function." Pinouts and electrical specs are otherwise identical.
Is the DG442DY RoHS-compliant and lead-free?
Yes, the DG442DY is RoHS-compliant and lead-free. Vishay confirms RoHS compliance for all current-production SOIC-packaged DG442 variants, including DG442DY, per their official product change notices and packaging data sheets. The device carries the "Y" suffix per Vishay's part numbering convention for lead-free, halogen-free, RoHS-compliant SOIC packages.
DG442DY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 4Ohm (Max)
- Voltage - Supply, Single (V+):
- 12V
- Voltage - Supply, Dual (V±):
- ±15V
- Switch Time (Ton, Toff) (Max):
- 250ns, 210ns
- -3db Bandwidth:
- -
- Charge Injection:
- -1pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 4pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -100dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG442DY FAQ
1.How can I place an order for DG442DY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG442DY on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DG442DY reliable?
The price and inventory of DG442DY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG442DY is usually 5 days.
3.What payment methods are accepted for DG442DY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG442DY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG442DY?
DG442DY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG442DY order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DG442DY?
For technical support, including DG442DY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG442DY requirements.
6.How does Aetrix verify that DG442DY is sourced from the original manufacturer or authorized distributors?
All DG442DY products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DG442DY meets industry standards.
7.What is the process for return or replacement of DG442DY?
All DG442DY units undergo pre-shipment inspection (PSI). If there is an issue with DG442DY, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DG442DY part is unused and in its original packaging.
Return procedure for DG442DY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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