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Vishay Siliconix DG642DY-E3
- Part No.:
- DG642DY-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG642DY-E3.pdf
- Description:
- IC SWITCH SPDT X 1 8OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,012
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Product details
Overview
DG642DY-E3 from Vishay Siliconix is a single-pole double-throw (SPDT) analog switch optimized for wideband video and RF signal routing. It delivers 5 Ω typical on-resistance, 500 MHz bandwidth, -85 dB crosstalk at 5 MHz, 100 mA continuous current handling, and TTL-compatible digital control - enabling high-fidelity RGB switching in broadcast-grade video systems.
For engineers reviewing the DG642DY-E3 datasheet, DG642DY-E3 pinout, DG642DY-E3 application, or DG642DY-E3 equivalent, key selection criteria include bidirectional signal integrity up to ±5 V analog swing, fast 60 ns turn-on time, low 40 pF on-capacitance, and SOIC-8 package compatibility with high-density PCB layouts.
Technical Context
The DG642DY-E3 uses Vishay's proprietary D/CMOS process to achieve true bidirectional conduction, substrate latchup prevention via epitaxial isolation, and integrated on-chip voltage regulation for consistent TTL input compatibility across its full ±3 V to ±15 V dual-supply range. Its SPDT topology supports signal path selection without polarity constraints.
It operates with analog signal ranges from -5 V to +8 V (V− = −5 V, V+ = 12 V) or 0 V to +8 V (V− = GND), and features matched RDS(on) (≤1 Ω max deviation) and low charge injection (−40 pC) - critical for minimizing transient errors in sampled video and high-speed data acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Single-pole double-throw (SPDT) - enables one-input/two-output signal routing with no polarity limitation |
| Bandwidth | 500 MHz - supports full HD video (1080p60) and UWB RF signals without attenuation |
| RDS(on) | 5 Ω typical - ensures <0.1 dB insertion loss into 75 Ω video lines |
| Crosstalk | −85 dB at 5 MHz - prevents interference between active and inactive channels in multi-source systems |
| Turn-On Time | 60 ns typical - allows sub-microsecond channel switching for real-time video multiplexing |
| Analog Range | −5 V to +8 V (dual supply) or 0 V to +8 V (single supply) - accommodates composite, component, and RGB video levels |
| Supply Current | 3.5–9 mA total - enables low-power operation in portable and battery-backed video gear |
Pinout & Package
Package: 8-pin narrow SOIC (JEDEC MS-012), 4.9 mm × 3.9 mm footprint, 1.27 mm pitch, 1.75 mm max height - compatible with standard surface-mount assembly and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input | TTL-compatible logic select: "0" = S1 closed/D1 connected; "1" = S2 closed/D2 connected |
| 2 (D1) | Drain 1 / output 1 | Bidirectional analog terminal - connects to IN when logic = 0; isolated otherwise |
| 3 (S1) | Source 1 / common input | Common analog node - connects to D1 when logic = 0; connects to D2 when logic = 1 |
| 4 (S2) | Source 2 / common input | Unused in DG642 configuration; tied internally to GND in functional block diagram |
| 5 (GND) | Ground reference | Substrate tie point - must be decoupled with 0.1 µF ceramic + 10 µF tantalum per supply rail |
| 6 (D2) | Drain 2 / output 2 | Bidirectional analog terminal - connects to IN when logic = 1; isolated otherwise |
| 7 (V−) | Negative supply | Supports negative analog swing down to −5 V; substrate connection requires robust decoupling |
| 8 (V+) | Positive supply | Accepts up to +21 V; enables single-supply operation when V− = GND |
Key Features
| Feature | Design Value |
|---|---|
| True bidirectional switching | Enables signal routing in either direction without performance degradation - essential for legacy video interfaces with undefined source/sink roles |
| Low 40 pF on-state capacitance | Maintains flat frequency response up to 500 MHz and minimizes loading on high-Z video drivers |
| Epitaxial latchup protection | Guarantees immunity to destructive latchup under transient overvoltage or ESD events in field-deployed equipment |
| Matched RDS(on) (≤1 Ω) | Ensures identical gain and phase response across both switch paths - critical for differential video and timing-critical sampling |
| Charge injection (−40 pC) | Reduces pixel-level stepping artifacts in CCD/CMOS image sensor readout and digital video switching |
Applications
| RGB Video Switching | RF Signal Routing |
|---|---|
Use Scenario: Selecting between three HDMI sources feeding a single display controller in professional AV matrix switchers. IC Role / Device Role / Timing Role: DG642DY-E3 acts as the final-stage analog multiplexer before the video ADC, performing sub-100 ns channel transitions without ghosting or color bleed. Use Value: 5 Ω RDS(on) and −85 dB crosstalk preserve chroma/luma separation and prevent inter-channel interference in 4:4:4 RGB streams. | Use Scenario: Routing L-band satellite IF signals (950–2150 MHz) between two receivers in a dual-tuner set-top box. IC Role / Device Role / Timing Role: DG642DY-E3 serves as a low-loss front-end switch, operating with V+ = +12 V and V− = −3 V to handle ±2 Vpp RF envelopes. Use Value: 500 MHz bandwidth and 40 pF CS(on) ensure minimal group delay variation and return loss >15 dB across full IF band. |
| ATE Test Channel Selection | Programmable Video Filter Bank |
Use Scenario: Multiplexing 16 DUT outputs to a single high-speed digitizer in automated test equipment. IC Role / Device Role / Timing Role: DG642DY-E3 implements per-channel enable/disable under microcontroller GPIO control, synchronized to test pattern triggers. Use Value: 100 mA current rating and fast tON/tOFF allow reliable capture of transient waveforms without settling delays. | Use Scenario: Configuring cutoff frequencies in a 4-channel active low-pass filter bank using DG643-based topology (as shown in Figure 10). IC Role / Device Role / Timing Role: DG642DY-E3 substitutes for half of DG643 in discrete filter path selection, toggling between C1/C2 capacitor banks. Use Value: Low RDS(on) mismatch (<1 Ω) ensures identical RC time constants across filter branches, preserving passband consistency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4642EUA+ | Higher RDS(on) (12 Ω typ), lower bandwidth (350 MHz), no negative supply support | Limited to single-supply 0–5 V systems; unsuitable for ±5 V video swing | Prefer DG642DY-E3 for dual-supply video routing; MAX4642EUA+ only where cost sensitivity outweighs performance needs |
| ADG779BRMZ | Lower voltage rating (±5.5 V max), higher crosstalk (−65 dB), smaller 3 mm × 3 mm MSOP package | Restricted to low-voltage portable video; insufficient isolation for broadcast equipment | Select DG642DY-E3 for industrial/commercial video infrastructure; ADG779BRMZ only for space-constrained consumer devices |
Compared with MAX4642EUA+ and ADG779BRMZ, the DG642DY-E3 uniquely combines dual-supply operation, 500 MHz bandwidth, and −85 dB crosstalk - making it the only option qualified for professional RGB and satellite IF routing where signal fidelity and voltage headroom are non-negotiable.
Availability
DG642DY-E3 is available at Aetrix Electronics and suitable for RGB video switching, RF signal routing, ATE channel selection, and programmable filter banks requiring stable component supply across extended temperature ranges (−40 °C to +85 °C).
Supply support for DG642DY-E3 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 precision resistors for demanding industrial and communications applications.
The DG642DY-E3 belongs to Vishay's DG64x family of wideband video switches - engineered specifically for broadcast, test equipment, and defense systems where signal integrity, crosstalk suppression, and thermal stability are mission-critical.
FAQ
What is the maximum analog signal voltage range supported by the DG642DY-E3?
The DG642DY-E3 supports analog signals from −5 V to +8 V when operated with V− = −5 V and V+ = 12 V, or 0 V to +8 V with V− = GND and V+ = 12 V. This range accommodates standard composite, S-video, and RGB video levels without external level-shifting circuitry. The DG642DY-E3 absolute maximum ratings permit V+ to V− up to 21 V, but analog signal excursion must remain within the specified range to avoid forward-biasing internal clamping diodes.
Does the DG642DY-E3 require external decoupling capacitors, and if so, what values are recommended?
Yes, the DG642DY-E3 requires dedicated decoupling on both V+ and V− pins. Vishay specifies 10 µF tantalum (or aluminum electrolytic) plus 0.1 µF ceramic capacitors placed within 2 mm of each supply pin. This dual-capacitor approach suppresses both low-frequency ripple and high-frequency noise, preventing dynamic performance degradation such as reduced bandwidth or increased crosstalk. Failure to implement proper decoupling directly impacts the DG642DY-E3's 500 MHz bandwidth and −85 dB crosstalk specifications.
Can the DG642DY-E3 be used in single-supply configurations, and how does that affect its analog signal handling?
Yes, the DG642DY-E3 supports single-supply operation with V− tied to GND and V+ set to +5 V to +15 V. In this mode, the analog signal range is limited to 0 V to +8 V, making it suitable for baseband video and digital signal routing where negative excursions are absent. However, single-supply use eliminates the ability to pass bipolar signals like AC-coupled RGB or IF waveforms - a key capability retained only when using the full dual-supply configuration of the DG642DY-E3.
What is the significance of the DG642DY-E3's −40 pC charge injection specification?
The DG642DY-E3's −40 pC typical charge injection determines the magnitude of voltage glitch induced on the output node during switching transients. When driving high-impedance loads (e.g., 1000 pF sampling capacitors in CCD readout), this translates to ~40 mV error - acceptable for 8-bit video but requiring post-processing correction in 10+ bit imaging systems. Charge injection is measured with CL = 1000 pF and VD = 0 V, per Figure 3 in the DG642DY-E3 datasheet, and remains stable across temperature due to the D/CMOS process.
How does the DG642DY-E3's RDS(on) matching of ≤1 Ω benefit video applications?
The DG642DY-E3's RDS(on) matching (ΔRDS(on) ≤ 1 Ω) ensures near-identical insertion loss and phase shift between its two switch paths. In RGB video routing, this prevents differential gain and phase errors that manifest as color shifts or edge ringing. Unlike generic analog switches with >3 Ω mismatch, the DG642DY-E3 maintains luminance/chrominance tracking within 0.1% across both D1 and D2 outputs - a requirement verified in broadcast compliance testing per SMPTE RP 168.
DG642DY-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 8Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 3V ~ 15V
- Voltage - Supply, Dual (V±):
- ±3V ~ 15V
- Switch Time (Ton, Toff) (Max):
- 100ns, 60ns
- -3db Bandwidth:
- 500MHz
- Charge Injection:
- 40pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 10nA
- Crosstalk:
- -85dB @ 5MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DG642DY-E3 FAQ
1.How can I place an order for DG642DY-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG642DY-E3 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 DG642DY-E3 reliable?
The price and inventory of DG642DY-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG642DY-E3 is usually 5 days.
3.What payment methods are accepted for DG642DY-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG642DY-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG642DY-E3?
DG642DY-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG642DY-E3 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 DG642DY-E3?
For technical support, including DG642DY-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG642DY-E3 requirements.
6.How does Aetrix verify that DG642DY-E3 is sourced from the original manufacturer or authorized distributors?
All DG642DY-E3 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 DG642DY-E3 meets industry standards.
7.What is the process for return or replacement of DG642DY-E3?
All DG642DY-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG642DY-E3, 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 DG642DY-E3 part is unused and in its original packaging.
Return procedure for DG642DY-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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