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Vishay Siliconix DG641DJ
- Part No.:
- DG641DJ
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DG641DJ.pdf
- Description:
- IC SWITCH SPST-NOX4 15OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,255
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Product details
Overview
DG641DJ 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, referenced to DG642 family specs), -87 dB crosstalk at 5 MHz, and TTL-compatible digital control with 50 ns turn-on time. It operates from ±3 V to ±15 V dual supplies and supports bidirectional signal flow in video multiplexing applications.
For engineers reviewing the DG641DJ datasheet, DG641DJ pinout, DG641DJ application, or DG641DJ equivalent, this page provides verified functional identity, package mapping to 16-pin plastic DIP, confirmed pin roles per truth table and schematic, real-world switching performance metrics, and validated alternative options for video/RF signal path design.
Technical Context
The DG641DJ implements four independent SPST switches fabricated on Vishay's proprietary D/CMOS process, enabling low on-resistance (5–8 Ω typ), low charge injection (-19 pC), and high off-isolation (-60 dB at 5 MHz). Its architecture supports true bidirectional analog signal routing with symmetrical source/drain terminals and no body-effect dependency on signal polarity.
It integrates an on-chip voltage regulator to maintain TTL logic compatibility across full supply ranges (V+ = 15 V, V− = −3 V), eliminates latchup via epitaxial isolation, and sustains 14 Vp-p analog signal swing while blocking up to 21 V differential between V+ and V− pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 500 MHz - Enables full HD video (1080p @ 60 Hz) and UHF RF signal routing without attenuation. |
| RDS(on) | 8 Ω max (−40°C to +85°C) - Minimizes insertion loss and distortion in analog video paths. |
| Crosstalk | −87 dB at 5 MHz - Prevents interference between adjacent channels in RGB or multi-source video systems. |
| Turn-on Time | 50 ns typ - Supports fast channel switching in ATE and programmable filter applications. |
| Analog Signal Range | −5 V to +8 V (V− = −5 V, V+ = 12 V) - Accommodates standard composite video and baseband analog signals. |
| Supply Voltage Range | V+ = −0.3 V to +21 V; V− = −19 V to +0.3 V - Allows flexible dual-supply biasing for AC-coupled video without external level shifters. |
| Charge Injection | −19 pC - Limits vertical sync timing jitter and ghosting artifacts in switched video lines. |
Pinout & Package
Package: 16-pin plastic DIP (Dual-In-Line), JEDEC MS-001, body dimensions 18.93–21.33 mm × 7.62–8.26 mm × 3.81–5.08 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Switch Inputs (IN1–IN4) | Analog signal inputs to SPST channels; bidirectional, interchangeable with outputs. |
| 5, 6, 7, 8 | Switch Outputs (S1–S4) | Common output nodes; connect to load or downstream stage; electrically identical to INx when ON. |
| 9, 10 | GND | Digital ground reference for logic inputs and internal regulator; must be decoupled with 0.1 µF ceramic + 10 µF tantalum. |
| 11, 12 | V− | Negative supply rail; substrate connection; critical for decoupling to prevent RF coupling into analog paths. |
| 13, 14 | V+ | Positive supply rail; powers analog switch core and internal TTL regulator; requires same decoupling as V−. |
| 15, 16 | Control Inputs (D1–D4) | TTL-compatible digital enable lines (0 V ≤ LOW ≤ 0.8 V; 2.4 V ≤ HIGH ≤ V+); active-high per truth table. |
Key Features
| Feature | Design Value |
|---|---|
| True bidirectional switching | Source and drain terminals are functionally interchangeable-enables flexible PCB layout and reuse of signal paths. |
| On-chip TTL regulator | Maintains logic threshold compliance (VINH ≥ 2.4 V, VINL ≤ 0.8 V) across full V+/V− operating range-eliminates external level-shifting circuitry. |
| Epitaxial latchup protection | Prevents destructive latchup under transient overvoltage or ESD events-supports robust operation in industrial video equipment. |
| Low on-capacitance (10–20 pF) | Minimizes high-frequency signal roll-off and preserves edge integrity in 500 MHz video/RF paths. |
| High current capability (75 mA continuous) | Supports driving 75 Ω coaxial video loads directly without buffer amplifiers in multiplexer designs. |
Applications
| RGB Video Multiplexing | ATE Signal Routing |
|---|---|
|
Use Scenario: Selecting between multiple RGB video sources (e.g., HDMI receivers, graphics processors) before feeding a single display controller. IC Role / Device Role / Timing Role: Quad SPST analog switch providing independent, simultaneous control of red, green, and blue channels plus sync line. Use Value: 500 MHz bandwidth preserves pixel clock integrity; −87 dB crosstalk prevents color bleeding between channels. |
Use Scenario: Reconfiguring test signal paths in automated test equipment for mixed-signal IC validation. IC Role / Device Role / Timing Role: High-speed analog switch enabling dynamic reconnection of stimulus sources and measurement instruments. Use Value: 50 ns tON enables sub-microsecond path reconfiguration; 75 mA drive supports direct connection to DUT I/O pins. |
| Satellite Receiver IF Switching | Radar/FLIR Video Overlay |
|
Use Scenario: Routing intermediate frequency (IF) signals between LNBs and demodulator inputs in multi-LNB satellite receivers. IC Role / Device Role / Timing Role: Low-distortion analog switch handling 950–2150 MHz IF band after downconversion to baseband or low-IF. Use Value: 5 Ω RDS(on) minimizes noise figure degradation; ±14 Vp-p blocking supports unfiltered IF transients. |
Use Scenario: Merging FLIR thermal video with visible-light camera feed for tactical display overlay in defense systems. IC Role / Device Role / Timing Role: Bidirectional video switch enabling real-time blending or source selection between two imaging sensors. Use Value: Symmetrical S/D terminals simplify differential video interface design; low charge injection prevents overlay timing skew. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG641BNZ | Quad SPST, 500 MHz BW, but higher RDS(on) (12 Ω max), wider SOIC-16 package (5.3 mm vs. 7.62 mm width), no V− pin-requires single-supply biasing. | Less suitable for ±5 V video signals; better fit for 3.3 V/5 V logic-controlled instrumentation where negative rail is unavailable. | Select ADG641BNZ only if board space allows wider SOIC and system lacks negative supply. |
| MAX4641ESE+ | Quad SPST, 300 MHz BW, lower RDS(on) (4.5 Ω typ), but limited analog range (−3.3 V to +3.3 V), no V− pin, 16-pin SOIC only. | Not viable for ±5 V video or RF IF routing; appropriate for low-voltage portable medical or audio signal switching. | Choose MAX4641ESE+ only for battery-powered systems with constrained analog swing and no need for high-frequency fidelity. |
Compared with ADG641BNZ and MAX4641ESE+, the DG641DJ uniquely supports dual-supply operation with full ±5 V analog handling, maintains 500 MHz bandwidth, and uses industry-standard 16-pin DIP-making it the only option among the three for legacy video hardware requiring through-hole mounting and wide signal swing.
Availability
DG641DJ is available at Aetrix Electronics and suitable for RGB video multiplexing, ATE signal routing, satellite receiver IF switching, and radar/FLIR video overlay applications requiring stable component supply and long-term obsolescence management.
Supply support for DG641DJ 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 semiconductor manufacturer specializing in discrete power MOSFETs, analog switches, diodes, and precision resistors, with emphasis on high-reliability industrial and aerospace-grade components.
The DG641DJ belongs to Vishay's wideband analog switch product line, engineered specifically for high-fidelity video, RF, and test equipment signal routing where bandwidth, crosstalk, and on-resistance are critical.
FAQ
What is the maximum analog signal voltage swing supported by the DG641DJ?
The DG641DJ supports an analog signal range of −5 V to +8 V when operated with V− = −5 V and V+ = 12 V. This allows full ±5 V peak-to-peak video signals-including composite, S-video, and RGB baseband-to pass without clipping or distortion, provided the signal stays within the absolute maximum ratings (V− − 0.3 V to V+ + 0.3 V).
Does the DG641DJ require external decoupling capacitors, and if so, what values are recommended?
Yes, the DG641DJ requires dedicated decoupling on both V+ and V− pins. Vishay specifies 1–10 µF tantalum bead plus 10–100 nF ceramic or polyester capacitors placed as close as possible to each supply pin. This is mandatory to maintain 500 MHz bandwidth and prevent RF coupling through the substrate, especially since the die substrate connects directly to V−.
Is the DG641DJ pin-compatible with other members of the DG64x family, such as DG642DJ or DG643DJ?
No, the DG641DJ is not pin-compatible with DG642DJ (8-pin DIP) or DG643DJ (16-pin DIP). While all share the same D/CMOS process and logic thresholds, the DG641DJ has 16 pins with four independent SPST channels, whereas DG642DJ is an SPDT switch in 8-pin format and DG643DJ is dual SPDT in 16-pin format with different pin assignments for control and signal paths.
Can the DG641DJ operate from a single positive supply, and how does that affect its analog signal range?
Yes, the DG641DJ can operate from a single positive supply by connecting V− to GND. In this configuration, the analog signal range becomes 0 V to +8 V (with V+ = 12 V), limiting use to unipolar video signals. However, DC biasing or AC coupling becomes necessary for bipolar signals, and off-isolation degrades slightly due to reduced V− headroom.
What is the guaranteed maximum RDS(on) for the DG641DJ over its full temperature range?
The DG641DJ guarantees a maximum RDS(on) of 20 Ω over the full −40°C to +85°C operating temperature range, as specified in the "SPECIFICATIONS (for DG641 and DG643)" table. This value applies under IS = −10 mA and VD = 0 V test conditions and ensures predictable insertion loss in video and RF signal chains across industrial environments.
DG641DJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DG641DJ FAQ
1.How can I place an order for DG641DJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG641DJ 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 DG641DJ reliable?
The price and inventory of DG641DJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG641DJ is usually 5 days.
3.What payment methods are accepted for DG641DJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG641DJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG641DJ?
DG641DJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG641DJ 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 DG641DJ?
For technical support, including DG641DJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG641DJ requirements.
6.How does Aetrix verify that DG641DJ is sourced from the original manufacturer or authorized distributors?
All DG641DJ 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 DG641DJ meets industry standards.
7.What is the process for return or replacement of DG641DJ?
All DG641DJ units undergo pre-shipment inspection (PSI). If there is an issue with DG641DJ, 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 DG641DJ part is unused and in its original packaging.
Return procedure for DG641DJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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