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Vishay Siliconix DG444DY-T1
- Part No.:
- DG444DY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG444DY-T1.pdf
- Description:
- IC SWITCH SPST-NCX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,498
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Product details
Overview
DG444DY-T1 from Vishay Siliconix is a quad SPST normally-closed CMOS analog switch IC designed for precision signal routing in mixed-signal systems. It delivers 50 Ω typical on-resistance, 120 ns typical turn-on time, ±15 V dual-supply operation, and 80 pA maximum off-leakage - enabling low-distortion audio switching, sample-and-hold circuits, and battery-powered data acquisition.
For engineers reviewing the DG444DY-T1 datasheet, DG444DY-T1 pinout, DG444DY-T1 application, or DG444DY-T1 equivalent, key selection criteria include its NC (normally closed) logic behavior, SOIC-16 package compatibility, dual/unipolar supply flexibility (+5 V to +36 V single or ±5 V to ±20 V dual), and charge injection of ≤1 pC for precision hold-step integrity.
Technical Context
The DG444DY-T1 implements four independent bidirectional analog switches fabricated on Vishay's high-voltage silicon-gate process, with epitaxial layer latchup protection. Each channel supports rail-to-rail analog signal ranges up to ±15 V under dual supplies and exhibits symmetrical on-resistance regardless of signal direction.
Its TTL/CMOS-compatible digital inputs (logic "0" ≤ 0.8 V, "1" ≥ 2.4 V) interface directly with microcontrollers and FPGAs, while the VL pin enables independent logic-level translation - critical for interfacing 3.3 V or 5 V control logic with higher analog supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST, normally closed (NC) |
| On-Resistance (RDS(on)) | 50 Ω typical - ensures minimal signal attenuation and gain error in precision amplifier or resistor-programmable gain paths |
| Turn-On Time (tON) | 120 ns typical at ±15 V - supports >1 MHz switching in data acquisition and ATE applications |
| Off-Leakage Current | ±0.01 nA typical - preserves capacitor voltage integrity over seconds in sample-and-hold circuits |
| Charge Injection | −1 pC typical - limits pedestal error to <1 mV in 1 nF hold capacitors |
| Analog Signal Range | ±15 V full range with ±15 V supplies - enables direct interfacing with industrial sensor outputs and op-amp rails |
| Supply Voltage Range | Single: +5 V to +36 V; Dual: ±5 V to ±20 V - supports wide-range legacy and modern power architectures |
Pinout & Package
Package: 16-pin narrow-body SOIC (JEDEC MS-012), 3.9 mm × 9.9 mm footprint, 1.27 mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control input | Active-high logic inputs controlling respective NC switches; compatible with 3.3 V/5 V CMOS/TTL |
| S1–S4 | Source terminal | Bidirectional analog input/output node; connects to signal source in NC configuration |
| D1–D4 | Drain terminal | Bidirectional analog input/output node; connects to load or downstream circuit in NC configuration |
| V+ | Positive analog supply | Supports up to +36 V single or +20 V dual; defines upper analog rail |
| V− | Negative analog supply | Supports down to −36 V single or −20 V dual; defines lower analog rail |
| GND | Analog ground reference | Return path for analog signals and substrate bias; separate from digital ground unless tied |
| VL | Logic supply reference | Decouples logic threshold from analog supplies; accepts 2.0 V to V+ for flexible level shifting |
Key Features
| Feature | Design Value |
|---|---|
| Normally closed (NC) topology | Ensures default signal continuity during power loss or logic reset - critical for fail-safe audio mute or sensor monitoring paths |
| 50 Ω on-resistance matching | Guarantees ≤0.5 % gain error across channels in programmable-gain amplifier designs using weighted resistor networks |
| 80 pA max off-leakage at 85 °C | Enables >10-second hold time in 100 nF sample capacitors without active refresh in portable instrumentation |
| Low 22 nW power consumption | Reduces thermal drift and extends battery life in handheld test equipment and remote sensors |
| 60 dB off-isolation at 1 MHz | Suppresses crosstalk between adjacent switched channels in multi-channel data loggers and telecom line cards |
Applications
| Audio Switching | Data Acquisition |
|---|---|
Use Scenario: Routing line-level stereo signals between multiple codecs, DACs, or headphone amplifiers in professional audio mixers. IC Role / Device Role / Timing Role: Quad SPST NC switch providing seamless analog path selection without pop/click artifacts during mute/unmute transitions. Use Value: 50 Ω RDS(on) and <1 pC charge injection prevent audible distortion and DC offset shifts during switching. |
Use Scenario: Multiplexing sensor outputs (thermocouple, RTD, strain gauge) into a shared ADC front-end in industrial PLC modules. IC Role / Device Role / Timing Role: Precision analog switch isolating inactive channels to prevent leakage-induced measurement errors and cross-talk. Use Value: ±0.01 nA off-leakage and 60 dB off-isolation maintain 16-bit accuracy across 16-channel scanning at 1 kSPS. |
| Sample-and-Hold Circuits | Telecommunication Systems |
Use Scenario: Capturing fast transient waveforms in oscilloscope front-ends or RF envelope detectors requiring sub-microsecond aperture time. IC Role / Device Role / Timing Role: NC switch acting as sampling gate with minimal charge injection to preserve hold capacitor voltage fidelity. Use Value: −1 pC typical charge injection limits pedestal error to <0.5 mV on 2.2 nF hold capacitors at 10 V full scale. |
Use Scenario: Configuring differential line interfaces (T1/E1, ISDN) by selecting termination resistors, filter components, or loopback paths in access concentrators. IC Role / Device Role / Timing Role: High-voltage tolerant analog switch routing ±12 V signaling levels while maintaining impedance match and low crosstalk. Use Value: ±20 V dual-supply capability and 100 Ω max RDS(on) ensure compliance with GR-1089 and ITU-T G.703 specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Quad SPST NO (normally open); 60 Ω RDS(on); 150 ns tON; requires external pull-down for NC behavior | Not drop-in: requires logic inversion and external biasing to emulate DG444DY-T1's NC state | Select when NO function is acceptable and layout allows added passive components |
| ADG1414BRUZ | Quad SPST NO; 1.8 Ω RDS(on); 15 V max supply; no V− pin - single-supply only | Cannot replace DG444DY-T1 in ±15 V dual-rail or NC-required systems without redesign | Prefer for ultra-low on-resistance in single-supply 12 V systems where NC is not mandatory |
Compared with MAX4617ESE+ and ADG1414BRUZ, the DG444DY-T1 uniquely provides true NC operation with ±20 V dual-supply support and 50 Ω on-resistance in a standard SOIC-16 package - eliminating need for external logic inversion or supply rail adaptation in legacy industrial and test equipment designs.
Availability
DG444DY-T1 is available at Aetrix Electronics and suitable for audio switching, data acquisition, and sample-and-hold circuits requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial OEM programs.
Supply support for DG444DY-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 leader in discrete semiconductors and passive components, specializing in high-reliability analog switching, power MOSFETs, and precision resistive solutions for industrial and automotive markets.
The DG444DY-T1 belongs to Vishay's high-voltage analog switch product line, engineered for robust performance in harsh environments - emphasizing low leakage, rail-to-rail signal handling, and latchup immunity in test equipment and factory automation.
FAQ
What is the logic behavior of DG444DY-T1 versus DG445DY-T1?
The DG444DY-T1 is a normally closed (NC) analog switch: each channel conducts when its INx input is logic low (≤0.8 V) and opens when high (≥2.4 V). In contrast, DG445DY-T1 is normally open (NO), conducting only when INx is high. This fundamental difference means DG444DY-T1 maintains signal continuity during power-down or logic reset - a critical safety feature in audio mute paths and sensor monitoring circuits where default connection is required.
Can DG444DY-T1 operate from a single +12 V supply?
Yes, DG444DY-T1 supports unipolar operation from +5 V to +36 V. At +12 V, it delivers 100 Ω typical on-resistance and 300 ns typical turn-on time - verified per Vishay's S13-2503 Rev. H specifications. The analog signal range becomes 0 V to +12 V, and the VL pin must be tied to the same 5 V logic supply used for control inputs to ensure proper threshold referencing.
How does DG444DY-T1 minimize pedestal error in sample-and-hold applications?
DG444DY-T1 minimizes pedestal error primarily through ultra-low charge injection (−1 pC typical) and sub-0.01 nA off-leakage. When the switch opens during hold phase, injected charge displaces hold capacitor voltage by ΔV = Q/CHOLD; with a 1 nF capacitor, −1 pC yields only −1 mV error. Its epitaxial construction also suppresses substrate coupling that could induce additional settling errors in precision timing paths.
Is DG444DY-T1 pin-compatible with older DG211/DG212 sockets?
Yes, DG444DY-T1 is a direct upgrade for DG211 and DG212 sockets in SOIC-16 footprint. It matches their pinout exactly - including identical IN/S/D/V+/V−/GND/VL assignments - while improving on-resistance (50 Ω vs. 90 Ω), speed (120 ns vs. 250 ns), and leakage (0.01 nA vs. 1 nA). No PCB changes are required for drop-in replacement in existing designs.
What is the maximum allowable analog signal voltage when using ±15 V supplies with DG444DY-T1?
With ±15 V supplies, DG444DY-T1 supports analog signals from −15 V to +15 V - full rail-to-rail operation - as confirmed in the "Analog Signal Range" specification (VANALOG = −15 V to +15 V, typ.). Signals exceeding these rails are clamped by internal diodes; forward current must be limited to ≤30 mA per diode to avoid damage, per Absolute Maximum Ratings.
DG444DY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 250ns, 140ns
- -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
DG444DY-T1 FAQ
1.How can I place an order for DG444DY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG444DY-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 DG444DY-T1 reliable?
The price and inventory of DG444DY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG444DY-T1 is usually 5 days.
3.What payment methods are accepted for DG444DY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG444DY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG444DY-T1?
DG444DY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG444DY-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 DG444DY-T1?
For technical support, including DG444DY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG444DY-T1 requirements.
6.How does Aetrix verify that DG444DY-T1 is sourced from the original manufacturer or authorized distributors?
All DG444DY-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 DG444DY-T1 meets industry standards.
7.What is the process for return or replacement of DG444DY-T1?
All DG444DY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG444DY-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 DG444DY-T1 part is unused and in its original packaging.
Return procedure for DG444DY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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