My Inquiry
My Account
Vishay Siliconix DG643DY-T1-E3
- Part No.:
- DG643DY-T1-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG643DY-T1-E3.pdf
- Description:
- IC SWITCH SPDT X 2 15OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,409
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DG643DY-T1-E3 from Vishay Siliconix is a dual SPDT analog switch optimized for high-frequency video and RF signal routing. It delivers 500 MHz bandwidth, 5 Ω typical RDS(on) (per channel), -87 dB crosstalk at 5 MHz, and TTL-compatible digital control with 60 ns turn-on time. It operates from ±3 V to ±15 V dual supplies and supports bidirectional ±5 V analog signals in RGB switching applications.
For engineers reviewing the DG643DY-T1-E3 datasheet, DG643DY-T1-E3 pinout, DG643DY-T1-E3 application, or DG643DY-T1-E3 equivalent, key selection criteria include guaranteed dual SPDT topology, SOIC-16 package compatibility, sub-100 ns switching performance, low charge injection (-19 pC), and verified operation across -40 °C to +85 °C industrial temperature range.
Technical Context
The DG643DY-T1-E3 implements two independent SPDT switches using Vishay's proprietary D/CMOS process, enabling true bidirectional conduction with matched on-resistance and low capacitance. Each channel features symmetrical source/drain terminals, no body diode limitations, and epitaxial latchup protection.
It integrates an on-chip regulator to maintain TTL input thresholds (VINH ≥ 2.4 V, VINL ≤ 0.8 V) across full supply ranges (V+ = 12 V, V− = −5 V). Analog signal handling is specified for ±5 V swing with 14 Vp-p blocking capability when off, and all terminals tolerate overvoltage clamping per internal diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPDT - provides two independent single-pole double-throw signal paths for flexible routing of video/RF sources |
| Bandwidth | 500 MHz - enables full HD video (1080p60) and UHF RF signal switching without attenuation |
| RDS(on) | 8 Ω max (−40 °C to +85 °C) - ensures minimal insertion loss & signal distortion in 75 Ω video lines |
| Crosstalk | −87 dB at 5 MHz - prevents interference between active and inactive channels in multi-source systems |
| Charge Injection | −19 pC - limits voltage glitch on sampled nodes, critical for precision ADC front-ends and filter tuning |
| Supply Range | V+ = −0.3 V to 21 V, V− = −19 V to +0.3 V - supports single-supply (V− = GND) or split-rail (±15 V) operation |
| Logic Compatibility | TTL - interfaces directly with 5 V microcontrollers, FPGAs, and logic families without level shifters |
Pinout & Package
Package: 16-pin narrow SOIC (JEDEC MS-012), 3.9 mm × 9.9 mm footprint, 1.27 mm pitch, RoHS-compliant, tape-and-reel (T1-E3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Source terminals (S1–S4) | Input/output analog nodes - interchangeable with drains; support bidirectional signal flow |
| 5, 6, 13, 14 | Drain terminals (D1–D4) | Input/output analog nodes - electrically identical to sources; enable symmetric PCB layout |
| 7, 15 | GND | Digital ground reference - must be star-connected to minimize noise coupling into analog paths |
| 8 | V− | Negative supply rail - substrate connection; requires dedicated 1–10 µF + 0.1 µF decoupling |
| 16 | V+ | Positive supply rail - powers analog core and internal regulator; same decoupling required |
| 9, 10, 11, 12 | Control inputs (A1, B1, A2, B2) | TTL-level logic pins - A/B pairs select SPDT state (0 = OFF/ON, 1 = ON/OFF) per switch |
Key Features
| Feature | Design Value |
|---|---|
| True bidirectional switching | Source and drain terminals are functionally identical - eliminates polarity constraints in AC-coupled video/RF paths |
| On-resistance matching | ΔRDS(on) ≤ 2 Ω - maintains channel-to-channel gain consistency in differential or parallel-switched configurations |
| Low off-isolation capacitance | CS(off) = 4–12 pF - minimizes feedthrough crosstalk in high-density multiplexer layouts |
| High current capability | 75 mA continuous per S/D terminal - supports driving 75 Ω coaxial cables and active video amplifiers |
| Latchup immunity | Epitaxial isolation layer - prevents destructive SCR triggering under transient overvoltage or ESD stress |
Applications
| RGB Video Routing | RF Signal Selection |
|---|---|
Use Scenario: Switching between three HDMI sources to a single display controller in AV receivers. IC Role / Device Role / Timing Role: Dual SPDT analog switch managing red/green/blue channel paths with simultaneous switching coordination. Use Value: Maintains <1% gain error and <0.1° phase mismatch across color channels due to matched RDS(on) and low crosstalk. | Use Scenario: Selecting between two antenna inputs in a satellite LNB downconverter module. IC Role / Device Role / Timing Role: High-isolation RF path selector operating up to 2 GHz fundamental (500 MHz −3 dB BW supports harmonics). Use Value: −87 dB crosstalk prevents adjacent-channel interference; 500 MHz bandwidth preserves modulation integrity for QPSK/8PSK signals. |
| Programmable Filter Tuning | ATE Signal Path Multiplexing |
Use Scenario: Configuring cutoff frequencies in a switched-capacitor low-pass filter bank for sensor signal conditioning. IC Role / Device Role / Timing Role: Precision analog switch enabling capacitor selection via DG643DY-T1-E3's low charge injection (−19 pC). Use Value: Charge injection error translates to <1 mV offset in 1 V full-scale 1000 pF sampling node - avoids calibration drift. | Use Scenario: Routing test signals between DUT pins and measurement instruments in automated board test systems. IC Role / Device Role / Timing Role: High-speed, low-distortion analog multiplexer supporting 100 kSPS parametric testing. Use Value: 60 ns tON/40 ns tOFF enables rapid channel cycling; 5 Ω RDS(on) minimizes test fixture loading errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4683ESE+ | Lower bandwidth (300 MHz), higher RDS(on) (12 Ω typ), single 2.7–5.5 V supply only | Not suitable for ±5 V video swing or >350 MHz RF; limited to low-voltage portable systems | Select when cost sensitivity outweighs bandwidth and voltage range requirements |
| ADG732BRUZ | 32-channel, 4.5 Ω RDS(on), but only 210 MHz bandwidth and no negative supply support | Designed for dense digital I/O expansion, not high-fidelity analog routing; lacks V− pin for bipolar signal handling | Prefer for multi-channel digital control where analog fidelity is secondary to channel count |
Compared with MAX4683ESE+ and ADG732BRUZ, DG643DY-T1-E3 uniquely combines 500 MHz bandwidth, ±15 V dual-supply operation, and dual SPDT topology in SOIC-16 - making it the only option for industrial RGB routing and wideband RF selection where signal integrity and voltage headroom are non-negotiable.
Availability
DG643DY-T1-E3 is available at Aetrix Electronics and suitable for RGB video routing, RF signal selection, programmable filter tuning, and ATE signal path multiplexing requiring stable component supply across extended temperature and high-frequency performance.
Supply support for DG643DY-T1-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 semiconductor manufacturer specializing in discrete components and analog ICs, with leadership in MOSFETs, diodes, optoelectronics, and precision analog switches.
The DG643DY-T1-E3 belongs to Vishay's high-bandwidth video switch product line, engineered specifically for broadcast-quality video routing, radar/FLIR front-ends, and satellite receiver signal conditioning where low distortion and high isolation are mandatory.
FAQ
What is the maximum analog signal voltage range supported by DG643DY-T1-E3?
DG643DY-T1-E3 supports analog signals from V− to V+, with guaranteed operation from −5 V to +8 V when V− = −5 V and V+ = 12 V. It blocks up to 14 Vp-p when off, and internal clamping diodes limit voltage excursions beyond supply rails - ensuring robustness in real-world video and RF environments where transients occur.
Does DG643DY-T1-E3 require external level-shifting for 3.3 V logic control?
No, DG643DY-T1-E3 does not require external level-shifting for 3.3 V logic control. Its TTL-compatible inputs accept VINL ≤ 0.8 V and VINH ≥ 2.4 V across full temperature range, and the on-chip regulator maintains threshold stability regardless of V+ (12 V) or V− (−3 V) supply values - enabling direct interface with 3.3 V FPGAs and microcontrollers.
Can DG643DY-T1-E3 be used in single-supply configurations?
Yes, DG643DY-T1-E3 can be used in single-supply configurations by connecting V− to GND. The device remains fully functional with V+ = 5–15 V, though analog signal range is then limited to 0 V to (V+ − 0.3 V) to avoid forward-biasing substrate junctions. For ±5 V video, dual-supply operation (e.g., V+ = 12 V, V− = −5 V) is recommended to preserve full dynamic range.
What is the thermal derating behavior of DG643DY-T1-E3 above 75 °C?
DG643DY-T1-E3 has a thermal derating factor of 80 mW/°C above 75 °C for the 16-pin narrow SOIC package. Its maximum power dissipation is 600 mW at 75 °C ambient; above that, allowable power decreases linearly - e.g., at 100 °C ambient, max power drops to 400 mW. This reflects silicon thermal resistance and package construction, not reliability degradation.
How does DG643DY-T1-E3 achieve latchup immunity?
DG643DY-T1-E3 achieves latchup immunity through an epitaxial isolation layer integrated into its D/CMOS process. This layer physically separates N-well and P-substrate regions, preventing formation of parasitic SCR structures that could trigger destructive latchup during overvoltage, ESD, or fast transient events - a critical feature for field-deployed video and radar equipment.
DG643DY-T1-E3 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:
- 2
- 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
DG643DY-T1-E3 FAQ
1.How can I place an order for DG643DY-T1-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG643DY-T1-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 DG643DY-T1-E3 reliable?
The price and inventory of DG643DY-T1-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG643DY-T1-E3 is usually 5 days.
3.What payment methods are accepted for DG643DY-T1-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG643DY-T1-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG643DY-T1-E3?
DG643DY-T1-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG643DY-T1-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 DG643DY-T1-E3?
For technical support, including DG643DY-T1-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG643DY-T1-E3 requirements.
6.How does Aetrix verify that DG643DY-T1-E3 is sourced from the original manufacturer or authorized distributors?
All DG643DY-T1-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 DG643DY-T1-E3 meets industry standards.
7.What is the process for return or replacement of DG643DY-T1-E3?
All DG643DY-T1-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG643DY-T1-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 DG643DY-T1-E3 part is unused and in its original packaging.
Return procedure for DG643DY-T1-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DG643DY-T1-E3 Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
