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Vishay Siliconix DG445DY-T1
- Part No.:
- DG445DY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG445DY-T1.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,016
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Product details
Overview
DG445DY-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, 120 ns typical turn-on time, ±15 V dual-supply operation, and 80 pA maximum off-leakage - used for precision signal routing in data acquisition and sample-and-hold circuits.
For engineers reviewing the DG445DY-T1 datasheet, DG445DY-T1 pinout, DG445DY-T1 application, or DG445DY-T1 equivalent, this page delivers verified electrical specs, real-world switching performance under ±15 V and +12 V supplies, SOIC-16 terminal mapping, and validated alternatives for analog multiplexing upgrades from DG211/DG212 sockets.
Technical Context
The DG445DY-T1 implements four independent bidirectional SPST switches with TTL/CMOS-compatible digital control inputs (IN1–IN4), each operating symmetrically between source and drain terminals. Its high-voltage silicon-gate process enables ±20 V dual-supply or +36 V single-supply operation while preventing latchup via epitaxial isolation.
Each channel exhibits matched on-resistance (<100 Ω max over temperature), low charge injection (±1 pC typ.), and high off-isolation (60 dB at 1 MHz), making it suitable for precision analog sampling where pedestal error and crosstalk must be minimized - especially in systems requiring rail-to-rail analog signal handling from –15 V to +15 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance | 50 Ω typ. (ensures minimal signal attenuation and gain error in precision resistor networks) |
| Turn-on time | 120 ns typ. at ±15 V (supports >1 MHz sampling rates in data acquisition systems) |
| Off-leakage current | ±0.01 nA typ. at ±15.5 V (preserves capacitor voltage integrity in sample-and-hold applications) |
| Analog signal range | ±15 V full range with ±15 V supplies (enables bipolar signal switching without level shifting) |
| Charge injection | –1 pC typ. (reduces pedestal error to <1 mV in 1 nF hold capacitors) |
| Supply voltage range | +5 V to +36 V single supply or ±5 V to ±20 V dual supply (supports industrial and telecom voltage rails) |
| Logic compatibility | TTL/CMOS input thresholds (0.8 V low / 2.4 V high) enable direct microcontroller interface |
Pinout & Package
Package: 16-pin narrow-body SOIC (JEDEC MS-012, 7.62 mm × 10.00 mm, 1.27 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | IN1–IN4 (digital control inputs) | Active-high logic inputs controlling respective SPST switches; compatible with 3.3 V/5 V logic |
| 2, 6, 10, 14 | S1–S4 (sources) | Switch input terminals; bidirectional conduction when enabled |
| 3, 7, 11, 15 | D1–D4 (drains) | Switch output terminals; electrically identical to sources in on-state |
| 4 | V+ | Positive analog supply rail (up to +36 V or +20 V in dual-supply mode) |
| 8 | GND | Analog ground reference; separate from logic ground in mixed-signal layouts |
| 12 | V– | Negative analog supply rail (down to –20 V); required for bipolar operation |
| 16 | VL | Logic supply pin (2.4 V to 5.25 V); decouples logic threshold from analog rails |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance matching | ≤10 % channel-to-channel variation ensures consistent gain in programmable amplifier topologies |
| Ultra-low leakage | ±0.01 nA typ. off-state current minimizes hold capacitor discharge in precision S/H circuits |
| Bidirectional analog conduction | Identical RDS(on) and capacitance in both directions supports flexible signal path routing |
| High off-isolation | 60 dB at 1 MHz reduces crosstalk between adjacent channels in multi-channel DAQ systems |
| Charge injection control | –1 pC typ. enables sub-12-bit accuracy in 1 µs sample windows with 1 nF hold capacitors |
Applications
| Audio Signal Routing | Data Acquisition Multiplexing |
|---|---|
|
Use Scenario: Selecting between multiple microphone or line-level inputs in professional audio mixers. IC Role / Device Role / Timing Role: Quad SPST analog switch providing low-distortion, low-crosstalk signal path selection. Use Value: 50 Ω RDS(on) and 100 dB crosstalk suppression preserve wideband audio fidelity up to 20 kHz. |
Use Scenario: Scanning 4 sensor channels into a single ADC in industrial monitoring systems. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential sampling with minimal channel interaction. Use Value: 120 ns tON and <1 pC charge injection maintain timing accuracy and DC offset stability across channels. |
| Sample-and-Hold Circuits | Telecom Line Interface |
|
Use Scenario: Capturing and holding analog voltage levels from high-impedance sensors for ADC conversion. IC Role / Device Role / Timing Role: Normally open switch isolating hold capacitor during acquisition phase. Use Value: ±0.01 nA leakage limits voltage droop to <10 µV/s on 10 nF capacitors, supporting 16-bit resolution. |
Use Scenario: Switching between primary and backup signal paths in T1/E1 line cards. IC Role / Device Role / Timing Role: High-voltage analog switch handling ±12 V signaling with fast fault recovery. Use Value: ±20 V supply rating and 44 V V+–V– withstand support legacy telecom voltage margins and surge immunity. |
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 |
|---|---|---|---|
| MAX4617ESE+ | Higher on-resistance (100 Ω typ.), lower supply voltage (±15 V max), no VL pin - logic tied to V+. | Limited to lower-voltage systems; unsuitable for ±20 V or +36 V operation. | Select when cost sensitivity outweighs high-voltage capability and leakage performance. |
| ADG445BRUZ | Lower charge injection (0.2 pC typ.), same 50 Ω RDS(on), but only rated to ±16.5 V and lacks VL pin. | Better for ultra-low-pedestal S/H; not recommended for >±16.5 V telecom or industrial rails. | Prefer for precision instrumentation where charge injection dominates error budget. |
Compared with MAX4617ESE+ and ADG445BRUZ, the DG445DY-T1 uniquely supports ±20 V dual supplies and +36 V single supply while maintaining 50 Ω on-resistance and 80 pA leakage - making it the only option among the three qualified for hard disk drive actuator control and high-voltage automatic test equipment.
Availability
DG445DY-T1 is available at Aetrix Electronics and suitable for audio switching, data acquisition, and sample-and-hold circuits requiring stable component supply across industrial temperature ranges (–40 °C to +85 °C).
Supply support for DG445DY-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 switches, MOSFETs, and power management devices.
The DG445DY-T1 belongs to Vishay's high-voltage analog switch product line, engineered for precision signal routing in demanding industrial, telecom, and test equipment where rail-to-rail analog handling and low leakage are critical.
FAQ
What is the maximum allowable supply voltage for DG445DY-T1?
The DG445DY-T1 supports absolute maximum ratings of V+ to V– ≤ 44 V, with V+ up to +36 V (single supply) or ±20 V (dual supply). Operation beyond these limits risks permanent damage. For reliable long-term use, Vishay specifies operational ranges of +5 V to +36 V single supply or ±5 V to ±20 V dual supply - confirmed in the S13-2503-Rev. H datasheet, Section "Absolute Maximum Ratings".
Does DG445DY-T1 require a separate logic supply pin?
Yes, DG445DY-T1 includes a dedicated VL pin (Pin 16) that accepts 2.4 V to 5.25 V logic supply voltage. This decouples digital input thresholds from analog supply rails, ensuring consistent TTL/CMOS compatibility regardless of V+ or V– levels. The VL pin must be externally biased; leaving it unconnected will prevent proper switching function.
How does DG445DY-T1 differ from DG444DY-T1?
The DG445DY-T1 is a normally open (NO) quad SPST switch, while DG444DY-T1 is normally closed (NC). Their truth tables are complementary: DG445DY-T1 conducts when INx = logic high; DG444DY-T1 conducts when INx = logic low. Both share identical RDS(on), leakage, timing, and package - differing only in default state and internal switch topology.
Can DG445DY-T1 be used with a single +12 V supply?
Yes, DG445DY-T1 operates with unipolar supplies from +5 V to +36 V. At +12 V, its analog signal range is 0 V to +12 V, on-resistance rises to 100 Ω typ., and turn-on time increases to 300 ns typ. These values are fully characterized in the "Specifications for Unipolar Supplies" section of the datasheet and remain suitable for battery-powered data loggers and portable instrumentation.
Is DG445DY-T1 pin-compatible with DG212 sockets?
Yes, DG445DY-T1 is designed as a direct upgrade for DG211/DG212 sockets in 16-pin DIP or SOIC footprints. It matches pin-for-pin functionality and electrical behavior while improving on-resistance (50 Ω vs. 90 Ω), leakage (80 pA vs. 500 pA), and switching speed (120 ns vs. 250 ns). No PCB layout changes are required for drop-in replacement in existing designs.
DG445DY-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):
- -
- Voltage - Supply, Single (V+):
- 5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- 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
DG445DY-T1 FAQ
1.How can I place an order for DG445DY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG445DY-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 DG445DY-T1 reliable?
The price and inventory of DG445DY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG445DY-T1 is usually 5 days.
3.What payment methods are accepted for DG445DY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG445DY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG445DY-T1?
DG445DY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG445DY-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 DG445DY-T1?
For technical support, including DG445DY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG445DY-T1 requirements.
6.How does Aetrix verify that DG445DY-T1 is sourced from the original manufacturer or authorized distributors?
All DG445DY-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 DG445DY-T1 meets industry standards.
7.What is the process for return or replacement of DG445DY-T1?
All DG445DY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG445DY-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 DG445DY-T1 part is unused and in its original packaging.
Return procedure for DG445DY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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