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Vishay Siliconix DG419BDY-T1
- Part No.:
- DG419BDY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG419BDY-T1.pdf
- Description:
- IC SWITCH SPDT X 1 25OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,780
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Product details
Overview
DG419BDY-T1 from Vishay Siliconix is a precision monolithic SPDT CMOS analog switch designed for high-fidelity signal routing in dual-supply systems. It features ±15 V analog signal range, 15 Ω typical on-resistance, 110 ns turn-on time, break-before-make switching action, and operates over –40 °C to +85 °C - enabling use in precision instrumentation and battery-powered test equipment.
For engineers reviewing the DG419BDY-T1 datasheet, DG419BDY-T1 pinout, DG419BDY-T1 application, or DG419BDY-T1 equivalent, this page delivers verified specifications, SOIC-8 package details, functional role in signal path isolation, and validated alternative options for analog multiplexing and channel selection designs.
Technical Context
The DG419BDY-T1 implements a single-pole double-throw (SPDT) topology with guaranteed break-before-make timing (tD = 16 ns typ), preventing signal shorting during state transitions. Its HVSG process enables ±15 V rail-to-rail analog operation and latchup immunity via epitaxial isolation.
It accepts TTL/CMOS-compatible digital control (VIN low ≤ 0.8 V, high ≥ 2.4 V) and supports independent logic supply (VL) at 5 V while operating from dual analog supplies (V+ = +15 V, V− = −15 V). Channel conduction is bidirectional with <0.75 nA max off-leakage at full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V - supports rail-to-rail AC/DC signal switching without clipping in dual-supply precision systems |
| On-Resistance (RDS(on)) | 15 Ω typ - minimizes voltage drop and gain error in low-impedance signal paths (e.g., sensor front-ends) |
| Turn-On Time (tON) | 110 ns max - enables sub-microsecond channel selection for high-speed data acquisition |
| Break-Before-Make Delay (tD) | 16 ns typ - ensures no transient short between S1 and S2, critical for fault-tolerant analog routing |
| Off-Leakage Current (IS(off)) | ±0.75 nA max at full temp - preserves accuracy in high-impedance sample-and-hold and integrator circuits |
| Charge Injection | 38 pC typ - limits voltage glitch on sampled nodes, essential for 12-bit+ ADC driver stages |
| Off Isolation (OIRR) | –82 dB at 1 MHz - suppresses crosstalk between inactive and active channels in multi-channel systems |
Pinout & Package
DG419BDY-T1 is housed in an 8-pin narrow SOIC (SOIC-8) package per JEDEC MS-012, with 1.27 mm pitch, 4.8–5.0 mm width, and 5.8–6.2 mm length. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input | Active-high logic signal selecting SW1 (ON) / SW2 (OFF) per truth table; TTL/CMOS compatible |
| 2 (S1) | SPDT common source 1 | First switch source terminal; connects to D when IN = 0, isolated when IN = 1 |
| 3 (D) | SPDT drain (common output) | Shared output node; routes S1 or S2 based on IN state; bidirectional conduction |
| 4 (S2) | SPDT common source 2 | Second switch source terminal; connects to D when IN = 1, isolated when IN = 0 |
| 5 (V−) | Negative analog supply | Bias reference for negative rail operation; must be ≤ –20 V absolute max |
| 6 (GND) | Digital ground reference | Return path for logic signals and VL; separate from analog grounds in mixed-signal layouts |
| 7 (V+) | Positive analog supply | Bias reference for positive rail operation; must be ≥ +20 V absolute max |
| 8 (VL) | Logic supply input | Independent 5 V logic rail; decoupling required to minimize digital noise coupling into analog path |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 16 ns minimum delay prevents momentary short between S1 and S2 - eliminates signal corruption during channel switching |
| Bidirectional analog conduction | Equal on-resistance and leakage in both directions - supports AC-coupled and DC-coupled signal routing without polarity constraints |
| High-voltage silicon gate (HVSG) process | Enables ±15 V analog range and latchup immunity via epitaxial layer - suitable for industrial and military environments |
| Low charge injection (38 pC) | Minimizes voltage step on high-Z nodes (e.g., ADC input capacitors) - maintains sampling accuracy in precision data converters |
| TTL/CMOS logic compatibility | Accepts standard 0.8 V / 2.4 V thresholds with <0.5 µA input current - simplifies interface to microcontrollers and FPGAs |
Applications
| Precision Test Equipment | Precision Instrumentation |
|---|---|
Use Scenario: Automated test systems routing calibrated reference voltages to DUT inputs while isolating unused channels. IC Role / Device Role / Timing Role: SPDT analog switch providing guarded signal path selection with break-before-make assurance. Use Value: Eliminates cross-talk-induced measurement drift and prevents reference shorting during reconfiguration. |
Use Scenario: Multi-channel medical sensor front-end selecting thermocouple or RTD inputs to shared signal conditioning circuitry. IC Role / Device Role / Timing Role: High-accuracy analog multiplexer with low leakage and rail-to-rail range supporting bipolar sensor outputs. Use Value: Maintains >14-bit effective resolution by limiting off-channel leakage to <0.75 nA across temperature. |
| Battery-Powered Systems | Sample-and-Hold Circuits |
Use Scenario: Portable multimeter using dual-supply analog switches to route unknown voltage/current ranges to ADC without power rail limitations. IC Role / Device Role / Timing Role: Low-quiescent-current (1 µA max I+) SPDT switch enabling long battery life in handheld instruments. Use Value: Delivers ±15 V dynamic range while drawing <5 µA total supply current - extends operational time on coin-cell batteries. |
Use Scenario: Precision data acquisition system capturing fast transients with minimal aperture error. IC Role / Device Role / Timing Role: Low-charge-injection (38 pC) switch isolating hold capacitor from input source during acquisition phase. Use Value: Reduces sampling glitch amplitude below 1 LSB for 12-bit systems with 10 nF hold capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4619ESE+ | Higher RDS(on) (35 Ω max), wider temp range (–40 °C to +125 °C), same SOIC-8 package | Better suited for under-hood automotive sensors requiring extended temperature operation | Select when ambient exceeds +85 °C; verify layout for higher on-resistance impact on gain accuracy |
| ADG1419BRMZ | Lower RDS(on) (1.3 Ω typ), higher supply voltage limit (+36 V), but requires external logic level translation for 5 V VL | Ideal for high-precision industrial PLC I/O modules needing ultra-low on-resistance and wide supply headroom | Choose when <2 Ω on-resistance is mandatory; add level-shifter if interfacing with 3.3 V controllers |
Compared with DG419BDY-T1, MAX4619ESE+ trades lower leakage and tighter RDS(on) tolerance for extended temperature capability, while ADG1419BRMZ delivers superior on-resistance and voltage range at the cost of increased complexity and price - making DG419BDY-T1 optimal for cost-sensitive, battery-powered precision instruments within commercial temperature limits.
Availability
DG419BDY-T1 is available at Aetrix Electronics and suitable for precision test equipment, battery-powered instrumentation, and sample-and-hold circuits requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for DG419BDY-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 solutions for industrial, military, and automotive markets.
The DG419B series belongs to Vishay's precision analog switch product line, engineered for low-distortion signal routing in measurement, control, and portable instrumentation where leakage, on-resistance, and switching integrity are critical.
FAQ
What is the maximum analog signal voltage range supported by DG419BDY-T1?
DG419BDY-T1 supports a ±15 V analog signal range when operated with V+ = +15 V and V− = −15 V. This allows rail-to-rail switching of bipolar signals without clipping. Exceeding these rails clamps signals via internal diodes, so design must ensure analog inputs stay within (V− − 2 V) to (V+ + 2 V) to avoid forward conduction and potential damage.
Does DG419BDY-T1 require a separate logic supply, and what voltage is recommended?
Yes, DG419BDY-T1 requires a dedicated logic supply (VL) pin (Pin 8). The datasheet specifies 5 V as the nominal VL, with logic thresholds defined as VIN ≤ 0.8 V (low) and ≥ 2.4 V (high). Using VL = 5 V ensures full TTL/CMOS compatibility and guarantees proper break-before-make timing across temperature.
Is DG419BDY-T1 pin-compatible with DG417BDY-T1 or DG418BDY-T1?
No, DG419BDY-T1 is not pin-compatible with DG417BDY-T1 or DG418BDY-T1. While all three share the SOIC-8 package, their pin functions differ: DG419BDY-T1 uses Pins 2 and 4 as S1/S2 sources and Pin 3 as common drain, whereas DG417B/DG418B use Pin 2 as source and Pin 3 as drain for a single SPST switch. PCB layout must be redesigned for functional replacement.
What is the guaranteed break-before-make time for DG419BDY-T1, and how is it measured?
DG419BDY-T1 guarantees a minimum break-before-make time (tD) of 3 ns (typical 16 ns) under RL = 300 Ω, CL = 35 pF, and VS1 = VS2 = ±10 V conditions. This parameter is measured as the time between the falling edge of one switch turning OFF and the rising edge of the other turning ON - ensuring no overlap that could short S1 and S2 terminals during transition.
Can DG419BDY-T1 operate from a single +12 V supply, and what are the implications?
Yes, DG419BDY-T1 can operate from a single +12 V supply (V+ = +12 V, V− = 0 V), supporting 0–12 V unipolar analog signals. However, RDS(on) increases to 26 Ω typ (vs. 15 Ω at ±15 V), tON degrades to 100 ns typ, and analog range reduces to 0–12 V. Designers must recalculate signal errors and settling time for this configuration.
DG419BDY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 13V ~ 36V
- Voltage - Supply, Dual (V±):
- ±7V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 89ns, 80ns
- -3db Bandwidth:
- -
- Charge Injection:
- 38pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -88dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DG419BDY-T1 FAQ
1.How can I place an order for DG419BDY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG419BDY-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 DG419BDY-T1 reliable?
The price and inventory of DG419BDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG419BDY-T1 is usually 5 days.
3.What payment methods are accepted for DG419BDY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG419BDY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG419BDY-T1?
DG419BDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG419BDY-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 DG419BDY-T1?
For technical support, including DG419BDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG419BDY-T1 requirements.
6.How does Aetrix verify that DG419BDY-T1 is sourced from the original manufacturer or authorized distributors?
All DG419BDY-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 DG419BDY-T1 meets industry standards.
7.What is the process for return or replacement of DG419BDY-T1?
All DG419BDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG419BDY-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 DG419BDY-T1 part is unused and in its original packaging.
Return procedure for DG419BDY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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