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Vishay Siliconix DG641DY-T1
- Part No.:
- DG641DY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG641DY-T1.pdf
- Description:
- IC SWITCH SPST-NOX4 15OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,864
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Product details
Overview
DG641DY-T1 from Vishay Siliconix is a quad single-pole single-throw (SPST) analog switch optimized for wideband video and RF signal routing. It delivers 500 MHz bandwidth, 5 Ω typical RDS(on) (per channel), -87 dB crosstalk at 5 MHz, and operates from ±3 V to ±15 V dual supplies or single +15 V supply with V− grounded - enabling RGB switching and high-fidelity video multiplexing in broadcast equipment.
For engineers reviewing the DG641DY-T1 datasheet, DG641DY-T1 pinout, DG641DY-T1 application, or DG641DY-T1 equivalent, key selection criteria include its 16-pin narrow SOIC package, bidirectional signal handling up to ±5 V, TTL-compatible control inputs, fast 50 ns turn-on time, and guaranteed performance across -40 °C to +85 °C industrial temperature range.
Technical Context
The DG641DY-T1 implements four independent SPST switches fabricated on Vishay's proprietary D/CMOS process, enabling true bidirectional analog/digital signal conduction with matched on-resistance and low charge injection. Its internal on-chip regulator maintains TTL logic compatibility across full supply voltage range without external level-shifting.
Each channel features symmetrical source/drain terminals, 14 Vp-p off-state blocking capability, epitaxial latch-up protection, and substrate tied to V− - requiring robust decoupling of both V+ and V− pins with 1–10 µF tantalum + 10–100 nF ceramic capacitors placed adjacent to the device.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 500 MHz - supports full HD video (1080p60) and UWB RF signals without significant attenuation |
| RDS(on) | 8 Ω max (25 °C) - ensures low insertion loss & minimal signal distortion in 75 Ω video paths |
| Crosstalk | -87 dB at 5 MHz - prevents interference between active and inactive channels in multi-source routing |
| Turn-on Time | 50 ns typ - enables rapid channel switching in ATE and programmable filter applications |
| Analog Range | -5 V to +8 V (V− = -5 V, V+ = 12 V) - accommodates bipolar video sync pulses and composite signals |
| Supply Range | V+ = -0.3 to +21 V, V− = -19 to +0.3 V - allows flexible biasing including single-supply operation |
| Leakage Current | <100 nA off-state - preserves DC accuracy in precision sensor multiplexing and data acquisition |
Pinout & Package
Package: 16-pin narrow SOIC (JEDEC MS-012), body dimensions 9.80–10.00 mm × 3.80–4.00 mm × 1.35–1.75 mm height, lead pitch 1.27 mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | Switch Input (IN1–IN4) | High-impedance analog input nodes; interchangeable with drain/source per channel |
| 2, 5, 11, 14 | Switch Output (S1–S4) | Low-capacitance output terminals; symmetric conduction path when enabled |
| 3, 6, 12, 15 | Channel Control (D1–D4) | TTL-compatible digital inputs; logic high (≥2.4 V) enables corresponding switch |
| 7, 16 | V− | Negative supply rail; substrate connection point - must be decoupled independently |
| 8 | V+ | Positive supply rail; powers internal CMOS logic and DMOS switch elements |
| 9, 16 | GND | Ground reference for logic interface; electrically isolated from analog signal ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional signal flow | Identical RDS(on) and capacitance in either direction - eliminates need for signal polarity awareness in layout |
| On-resistance matching | ≤2 Ω max ΔRDS(on) - critical for gain-matched video channel switching and differential signal integrity |
| Charge injection | -19 pC typ - minimizes voltage glitch on sampled-hold nodes and ADC front-ends |
| Off-isolation | -60 dB at 5 MHz - suppresses leakage from powered-off sources into active signal paths |
| ESD protection | 2 kV HBM - withstands handling and board-level ESD events without functional degradation |
Applications
| RGB Video Multiplexer | ATE Signal Routing |
|---|---|
Use Scenario: Selecting among three RGB video sources (HDMI, VGA, component) for display output in professional AV switchers. IC Role / Device Role / Timing Role: Quad SPST switch routing red, green, blue, and sync signals simultaneously with sub-ns timing skew. Use Value: Maintains 500 MHz bandwidth across all channels, preserving color fidelity and eliminating ghosting via -87 dB crosstalk. | Use Scenario: Reconfiguring test signal paths between DUT, instruments, and reference loads in automated test equipment racks. IC Role / Device Role / Timing Role: High-speed analog switch enabling <100 ns reconfiguration of 75 Ω RF and video stimulus/response paths. Use Value: 50 ns tON and 28 ns tOFF support >10 MHz test sequencing; ±14 Vp-p blocking isolates sensitive measurement circuits. |
| Satellite Receiver Tuner Bank | Radar/FLIR Front-End Switching |
Use Scenario: Switching L-band IF signals (950–2150 MHz) between multiple satellite LNBs and demodulator inputs. IC Role / Device Role / Timing Role: Low-capacitance SPST switch providing broadband RF path selection with minimal group delay variation. Use Value: 500 MHz bandwidth extends usable range beyond fundamental IF; 4 pF CS(off) reduces loading on SAW filters. | Use Scenario: Alternating antenna receive paths between FLIR thermal imaging and pulse-Doppler radar subsystems in multi-sensor platforms. IC Role / Device Role / Timing Role: High-isolation analog switch managing shared analog signal chain resources under real-time control. Use Value: -60 dB off-isolation prevents radar transmit energy from saturating FLIR preamps; latch-up immunity ensures reliability in harsh environments. |
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, 3 Ω RDS(on), 300 MHz bandwidth, 5 V single-supply only | Limited to unipolar signals ≤4.5 V; no negative supply support | Select when cost-sensitive 5 V systems require lower on-resistance but can sacrifice bandwidth and bipolar range |
| ADG612BRUZ | Quad SPST, 8.5 Ω RDS(on), 190 MHz bandwidth, ±5 V dual-supply capable | Lower bandwidth restricts use to SD video and baseband audio; higher leakage (±200 nA) | Choose for legacy industrial designs where ADI ecosystem integration and long-term availability outweigh bandwidth needs |
Compared with MAX4617ESE+ and ADG612BRUZ, the DG641DY-T1 uniquely combines 500 MHz bandwidth, ±15 V dual-supply operation, and -87 dB crosstalk - making it the only option among the three qualified for high-fidelity RGB and L-band satellite IF routing without external amplification or level-shifting.
Availability
DG641DY-T1 is available at Aetrix Electronics and suitable for RGB video multiplexing, ATE signal routing, and satellite receiver tuner banks requiring stable component supply, extended temperature operation, and high-frequency analog integrity.
Supply support for DG641DY-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 management, and sensing solutions for industrial, automotive, and communications markets.
The DG641DY-T1 belongs to Vishay's DG64x family of wideband video switches, engineered specifically for high-fidelity analog signal routing in broadcast infrastructure, test instrumentation, and defense electronics where bandwidth, isolation, and DC precision are non-negotiable.
FAQ
What is the maximum analog signal voltage swing supported by DG641DY-T1?
The DG641DY-T1 supports analog signals from V− − 0.3 V to V+ + 0.3 V, with absolute maximum ratings of V+ to V− ≤ 21 V. At V+ = 15 V and V− = −3 V, the usable analog range is −5 V to +8 V - sufficient for ±5 V video sync and composite signals. Exceeding these limits triggers internal clamping diodes, so external current limiting is required per datasheet Note a.
Does DG641DY-T1 require separate decoupling for V+ and V− pins?
Yes, DG641DY-T1 requires independent decoupling on both V+ and V− pins. Because the substrate is tied to V−, inadequate V− decoupling directly degrades high-frequency performance and increases crosstalk. Vishay specifies 1–10 µF tantalum + 10–100 nF ceramic capacitors mounted within 2 mm of each supply pin - a requirement confirmed in Application Note 826 and Figure 7 of the DG641DY-T1 datasheet.
Can DG641DY-T1 operate from a single positive supply?
Yes, DG641DY-T1 supports single-supply operation with V− connected to GND and V+ set to +5 V to +15 V. However, the analog input range becomes 0 V to V+ − 0.3 V, limiting use to unipolar signals. For bipolar video or RF applications, dual-supply operation (e.g., V+ = +15 V, V− = −3 V) is mandatory to achieve full ±5 V signal handling and optimal linearity.
What is the guaranteed RDS(on) matching between channels in DG641DY-T1?
The DG641DY-T1 guarantees ΔRDS(on) ≤ 2 Ω across all four channels at room temperature, as specified in the "RDS(on) Match" parameter of the DG641/DG643 specifications table. This tight matching ensures uniform gain and phase response in multi-channel video routing - critical for maintaining color balance in RGB systems and minimizing image artifacts.
Is DG641DY-T1 pin-compatible with other DG64x variants like DG642DY or DG643DY?
No, DG641DY-T1 is not pin-compatible with DG642DY (8-pin SOIC, SPDT) or DG643DY (16-pin SOIC, dual SPDT). The DG641DY-T1 uses a unique 16-pin configuration with four independent IN/S/D/control sets. Pinouts differ fundamentally across the DG64x family - confirmed by separate functional block diagrams and truth tables in the datasheet - so PCB layout must be specific to DG641DY-T1.
DG641DY-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):
- 15Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 3V ~ 15V
- Voltage - Supply, Dual (V±):
- ±3V ~ 15V
- Switch Time (Ton, Toff) (Max):
- 70ns, 50ns
- -3db Bandwidth:
- 500MHz
- Charge Injection:
- 19pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 10nA
- Crosstalk:
- -87dB @ 5MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG641DY-T1 FAQ
1.How can I place an order for DG641DY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG641DY-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 DG641DY-T1 reliable?
The price and inventory of DG641DY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG641DY-T1 is usually 5 days.
3.What payment methods are accepted for DG641DY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG641DY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG641DY-T1?
DG641DY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG641DY-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 DG641DY-T1?
For technical support, including DG641DY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG641DY-T1 requirements.
6.How does Aetrix verify that DG641DY-T1 is sourced from the original manufacturer or authorized distributors?
All DG641DY-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 DG641DY-T1 meets industry standards.
7.What is the process for return or replacement of DG641DY-T1?
All DG641DY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG641DY-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 DG641DY-T1 part is unused and in its original packaging.
Return procedure for DG641DY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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