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Vishay Siliconix DG442DY-T1
- Part No.:
- DG442DY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG442DY-T1.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,404
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Product details
Overview
DG442DY-T1 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, audio switching paths, and data acquisition front-ends where bidirectional conduction and minimal charge injection (–1 pC) are critical.
For engineers reviewing the DG442DY-T1 datasheet, DG442DY-T1 pinout, DG442DY-T1 application, or DG442DY-T1 equivalent, key selection criteria include guaranteed –15 V to +15 V analog signal range, TTL/CMOS-compatible digital inputs (0.8 V / 2.4 V thresholds), 80 pA maximum off-leakage at full temperature range, and SOIC-16 footprint compatibility with legacy DG202 upgrades.
Technical Context
The DG442DY-T1 implements four independent single-pole single-throw switches using high-voltage silicon-gate CMOS process, with epitaxial layer latchup protection. 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 internal clamping diodes limit digital/analog input excursions beyond V+ or V– to ±2 V - requiring external current limiting per datasheet note. Charge injection is minimized at the drain terminal for accurate sampling in hold capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - supports rail-to-rail analog signals with dual ±15 V supplies |
| rDS(on) Typ. | 50 Ω - ensures minimal signal attenuation and gain error in precision amplifiers |
| tON Typ. | 150 ns - enables sub-microsecond multiplexing in high-speed data acquisition |
| Charge Injection | –1 pC - reduces pedestal error in sample-and-hold circuits with 1 nF hold capacitor |
| ID(off) Max | 20 pA - maintains high DC accuracy in high-impedance sensor interfaces |
| Supply Voltage Range | V+ to V– = 44 V - allows flexible biasing including ±15 V, ±12 V, or +12 V/0 V configurations |
| Logic Thresholds | VIL = 0.8 V, VIH = 2.4 V - ensures direct interfacing with 5 V TTL and CMOS controllers |
Pinout & Package
Package: 16-pin narrow-body SOIC (SOIC-16N), 7.5 mm × 10.3 mm body, 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | IN1–IN4 | Digital control inputs - active-high, TTL/CMOS compatible |
| 2, 6, 10, 14 | S1–S4 | Switch source terminals - bidirectional analog I/O nodes |
| 3, 7, 11, 15 | D1–D4 | Switch drain terminals - bidirectional analog I/O nodes |
| 4 | V+ | Positive supply rail - must be ≥2 V above highest analog signal |
| 8 | V– | Negative supply rail - must be ≤2 V below lowest analog signal |
| 12 | GND | Analog/digital reference - separate ground return recommended for noise isolation |
| 16 | NC | No connect - internally unconnected; must remain floating |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPST NO configuration | Four independent normally open switches - eliminates need for external pull-downs in default-off systems |
| Low on-resistance match | ≤5 Ω max mismatch between channels - preserves gain matching in multi-channel instrumentation |
| Low off-isolation degradation | 60 dB minimum off-isolation at 1 MHz - prevents crosstalk in RF-adjacent mixed-signal PCB layouts |
| Single-supply capability | Operates from +12 V/0 V - simplifies power design in battery-powered portable instruments |
| ESD robustness | 2 kV HBM - withstands handling during manual assembly without additional protection |
Applications
| Audio Signal Routing | Sample-and-Hold Circuits |
|---|---|
Use Scenario: Switching line-level stereo inputs between multiple codecs or ADCs in professional audio mixers. IC Role / Device Role / Timing Role: Bidirectional analog path selector with <150 ns switching - avoids audible clicks during real-time routing. Use Value: 50 Ω rDS(on) and <4 pF off-capacitance minimize frequency response roll-off and inter-channel crosstalk. | Use Scenario: Capturing precise analog sensor outputs (e.g., thermocouple, strain gauge) before digitization. IC Role / Device Role / Timing Role: Sample switch in open-loop S/H topology - triggered by microcontroller GPIO. Use Value: –1 pC charge injection limits pedestal error to <1 mV with 1 nF hold capacitor and ±15 V supplies. |
| Data Acquisition Multiplexing | Medical Instrumentation Front-End |
Use Scenario: Scanning 16-channel industrial sensor array into single high-resolution ADC. IC Role / Device Role / Timing Role: Low-leakage analog MUX stage - sequenced via FPGA-controlled IN1–IN4 lines. Use Value: 20 pA max ID(off) at 85°C ensures <0.1% reading drift over temperature in 10 MΩ sensor bridges. | Use Scenario: Isolating ECG electrode inputs from patient-connected circuitry during calibration cycles. IC Role / Device Role / Timing Role: Safety-critical analog gate - opened only during active measurement windows. Use Value: ±15 V analog range and 44 V V+–V– rating support defibrillation-safe isolation margins 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) (100 Ω typ.), 3.3 V logic compatible, no negative supply required | Better suited for single-supply 3.3 V systems; lacks ±15 V analog range | Select when upgrading from 5 V to 3.3 V control logic and analog range ≤3.3 V |
| ADG442BRZ | Same pinout, identical rDS(on) and tON specs, but 100 pA ID(off) max at 85°C vs. 20 pA | Acceptable for lower-precision DAQ; not recommended for medical-grade S/H | Choose for drop-in replacement where leakage tolerance >100 pA is acceptable |
Compared with MAX4618ESE+ and ADG442BRZ, the DG442DY-T1 delivers superior leakage performance (20 pA vs. 100–500 pA), wider analog range (±15 V vs. 0–5.5 V or ±12 V), and proven reliability in hi-rel systems - making it optimal for precision, dual-supply, and safety-critical applications.
Availability
DG442DY-T1 is available at Aetrix Electronics and suitable for audio signal routing, sample-and-hold circuits, and data acquisition multiplexing requiring stable component supply across industrial, medical, and test equipment programs.
Supply support for DG442DY-T1 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 MOSFETs, analog switches, and high-reliability power components.
The DG442DY-T1 belongs to Vishay's legacy analog switch product line, designed specifically for precision signal routing in high-fidelity audio, medical instrumentation, and automated test equipment where low distortion and long-term parameter stability are mandatory.
FAQ
What is the maximum analog signal voltage range supported by DG442DY-T1?
The DG442DY-T1 supports an analog signal range of ±15 V when operated with V+ = +15 V and V– = –15 V. With unipolar supplies (e.g., V+ = +12 V, V– = 0 V), the usable analog range is 0 V to +12 V. Exceeding V+ or falling below V– risks triggering internal clamping diodes, so analog signals must stay within the supply rails.
Does DG442DY-T1 require external pull-up or pull-down resistors on its digital inputs?
No, DG442DY-T1 does not require external pull-up or pull-down resistors on IN1–IN4. Its TTL/CMOS-compatible inputs have defined thresholds (VIL = 0.8 V, VIH = 2.4 V) and low input current (±500 nA), allowing direct connection to microcontroller GPIO or FPGA outputs without additional biasing components.
Can DG442DY-T1 operate from a single +5 V supply?
Yes, DG442DY-T1 can operate from a single +5 V supply (V+ = +5 V, V– = 0 V), supporting analog signals from 0 V to +5 V. However, on-resistance increases to ~200 Ω (max) and switching speed degrades (tON up to 450 ns), so this configuration is best reserved for low-bandwidth, cost-sensitive applications where precision is secondary.
What is the thermal derating behavior of DG442DY-T1 in SOIC-16N package?
In its 16-pin narrow SOIC package, DG442DY-T1 has a power dissipation rating of 900 mW at 25°C, derated linearly at 12 mW/°C above 25°C. At 85°C ambient, maximum allowable power drops to 180 mW. This requires careful layout with thermal vias and copper pour to maintain junction temperature within –40°C to +85°C operating range.
Is DG442DY-T1 pin-compatible with DG442DJ or DG442AK variants?
Yes, DG442DY-T1 shares identical pinout and electrical specifications with DG442DJ (plastic DIP) and DG442AK (ceramic DIP), differing only in package type and temperature grade. All three use the same 16-pin layout with IN/S/D assignments, enabling direct PCB footprint substitution where mechanical constraints allow.
DG442DY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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-T1 FAQ
1.How can I place an order for DG442DY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG442DY-T1 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-T1 reliable?
The price and inventory of DG442DY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG442DY-T1 is usually 5 days.
3.What payment methods are accepted for DG442DY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG442DY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG442DY-T1?
DG442DY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG442DY-T1 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-T1?
For technical support, including DG442DY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG442DY-T1 requirements.
6.How does Aetrix verify that DG442DY-T1 is sourced from the original manufacturer or authorized distributors?
All DG442DY-T1 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-T1 meets industry standards.
7.What is the process for return or replacement of DG442DY-T1?
All DG442DY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG442DY-T1, 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-T1 part is unused and in its original packaging.
Return procedure for DG442DY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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