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Vishay Siliconix DG429DJ-E3
- Part No.:
- DG429DJ-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 18-DIP (0.300", 7.62mm)
- Datasheet:
-
DG429DJ-E3.pdf
- Description:
- IC SWITCH SP4T X 2 100OHM 18DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,110
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Product details
Overview
DG429DJ-E3 from Vishay Siliconix is a latchable differential 4-channel analog multiplexer IC used for precision signal routing in microprocessor-controlled data acquisition systems. It features TTL-compatible address latches, break-before-make switching, 55 Ω on-resistance, 1 pC charge injection, and ±15 V dual-supply operation. The device selects one of four differential input pairs (S1a/S1b through S4a/S4b) to a common differential output under latched digital control.
For engineers reviewing the DG429DJ-E3 datasheet, DG429DJ-E3 pinout, DG429DJ-E3 application, or DG429DJ-E3 equivalent, key selection criteria include its differential channel architecture, latch-enabled bus interface, low crosstalk performance, and compatibility with industrial-grade -40 °C to +85 °C operating environments.
Technical Context
The DG429DJ-E3 integrates on-chip address latches, level shifters, and CMOS transmission gates built with parallel n- and p-channel MOSFETs. Its logic interface operates from an internal +5 V reference, enabling full rail-to-rail analog conduction (±15 V) independent of digital supply levels.
Control is implemented via three TTL-compatible inputs - A0/A1 for channel selection, EN for latch enable, and WR/RS for write and master reset - supporting transparent or latched operation modes. Break-before-make timing ensures no momentary shorting between adjacent differential channels during switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Configuration | Differential 4-channel multiplexer: routes one of four balanced input pairs to differential output |
| RDS(on) | 55 Ω typical at ±15 V supplies: enables low-insertion-loss signal paths for precision measurement |
| Charge Injection | 1 pC typical: minimizes voltage glitch and settling error in sample-and-hold or ADC front-end circuits |
| tTRANS | 160 ns typical: supports high-throughput scanning in automated test equipment (ATE) |
| Supply Range | ±15 V dual supply or 12 V single supply: accommodates wide analog input ranges without external level shifting |
| Logic Compatibility | TTL-compatible inputs (0.8 V / 2.4 V thresholds): interfaces directly with 5 V microcontrollers and FPGAs |
| Break-Before-Make | 30 ns minimum interval: prevents transient crosstalk between differential channels during state transitions |
Pinout & Package
Package: 18-pin plastic DIP (Dual-In-Line), 0.300-inch width, JEDEC MS-001AC. Pin 1 marked by notch or dot; leads are tin-lead plated per RoHS exemption.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high latch enable: must be high during WR pulse to capture A0/A1 address; ties multiple DG429s for stacked operation |
| 2 (A0) | Address bit 0 | LSB of 2-bit binary channel select (00–11); latched on rising edge of WR when EN = high |
| 3 (A1) | Address bit 1 | MSB of 2-bit binary channel select; determines which differential pair (S1–S4) connects to output |
| 4 (WR) | Write control | Active-low write strobe: loads A0/A1 into internal latches on rising edge; enables transparent mode when held low |
| 5 (RS) | Reset input | Active-low master reset: clears all latches and forces all switches OFF regardless of other control states |
| 6 (GND) | Analog/digital ground | Common reference for digital logic and analog return path; requires low-impedance PCB connection |
| 7 (V−) | Negative supply | Connects to −15 V rail; defines lower analog signal limit and powers internal level shifter |
| 8 (V+) | Positive supply | Connects to +15 V rail; defines upper analog signal limit and powers switch transistors |
| 9–10 (S1a/S1b) | Differential channel 1 input | First balanced input pair; routed to output when A1A0 = 00; bidirectional conduction |
| 11–12 (S2a/S2b) | Differential channel 2 input | Second balanced input pair; selected when A1A0 = 01; matched RDS(on) ensures common-mode rejection |
| 13–14 (S3a/S3b) | Differential channel 3 input | Third balanced input pair; selected when A1A0 = 10; identical layout symmetry to S1/S2 for phase matching |
| 15–16 (S4a/S4b) | Differential channel 4 input | Fourth balanced input pair; selected when A1A0 = 11; supports fully differential sensor or transducer interfacing |
| 17–18 (Da/Db) | Differential output | Common output terminals; deliver selected differential signal with <−75 dB off-isolation at 100 kHz |
Key Features
| Feature | Design Value |
|---|---|
| On-board TTL-compatible address latches | Eliminates external latch ICs and reduces board space in microprocessor bus systems such as data acquisition and ATE |
| Break-before-make switching | Guarantees ≥30 ns isolation gap between channel disconnect and next connect, preventing differential signal shorting |
| Low RDS(on) matching (ΔRDS(on) ≤ 5 %) | Maintains amplitude and phase balance across differential paths-critical for instrumentation amplifier front-ends |
| Single- or dual-supply operation | Supports 12 V single supply (0–12 V analog range) or ±15 V dual supply (±15 V analog range) without redesign |
| ESD-protected logic inputs | Integrated input protection circuitry withstands handling and operational transients per IEC 61000-4-2 Level 2 |
Applications
| Data Acquisition Systems | Automatic Test Equipment (ATE) |
|---|---|
Use Scenario: High-accuracy multi-sensor monitoring in environmental chambers or calibration labs using thermocouples, RTDs, and strain gauges. IC Role / Device Role / Timing Role: Differential analog multiplexer routing sensor outputs to a precision 24-bit delta-sigma ADC while rejecting common-mode noise. Use Value: 1 pC charge injection and matched 55 Ω RDS(on) minimize gain/offset errors and preserve DC accuracy across all 4 channels. | Use Scenario: Automated functional testing of mixed-signal PCBs requiring sequential stimulus and response measurement across multiple differential nodes. IC Role / Device Role / Timing Role: Channel selector in a programmable test fixture that applies calibrated differential signals and captures responses under microcontroller control. Use Value: 160 ns transition time and break-before-make guarantee fast, glitch-free switching between test points without signal coupling. |
| Avionics Signal Conditioning | Medical Instrumentation |
Use Scenario: Routing differential outputs from inertial measurement units (IMUs) and air data sensors to flight control computers in DO-160-compliant avionics racks. IC Role / Device Role / Timing Role: Latch-controlled analog switch providing fault-tolerant, ESD-hardened signal path selection in safety-critical sensor fusion subsystems. Use Value: -40 °C to +85 °C temperature rating, ±44 V absolute max supply, and latch retention during power brownouts ensure reliability in harsh airborne environments. | Use Scenario: Front-end multiplexing of differential EEG or ECG electrode pairs into low-noise instrumentation amplifiers in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-leakage (±50 pA ID(off)), low-charge-injection analog switch preserving microvolt-level biopotential integrity. Use Value: Sub-1 pC charge injection and <−75 dB off-isolation suppress switching artifacts that could mask neural or cardiac waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4692ESE+ | Higher RDS(on) (120 Ω typ), no on-chip latches, SPI interface instead of parallel TTL control | Suited for space-constrained designs where serial configuration is preferred over address bus routing | Select MAX4692ESE+ only if system uses SPI-based control and can tolerate higher on-resistance and lack of latch retention |
| ADG409BRZ | Identical 4-channel differential topology but no integrated latches; requires external 74HC373 or similar for bus interfacing | Better suited for designs already using external latching logic or where asynchronous control timing is required | Choose ADG409BRZ when board layout allows external latch placement and precise timing control over WR/RS edges is needed |
Compared with MAX4692ESE+ and ADG409BRZ, the DG429DJ-E3 uniquely combines on-chip TTL latches, 55 Ω RDS(on), and break-before-make timing in a single 18-pin DIP package-enabling simpler, more deterministic microprocessor bus integration without added logic or timing complexity.
Availability
DG429DJ-E3 is available at Aetrix Electronics and suitable for data acquisition systems, automatic test equipment, avionics signal conditioning, and medical instrumentation requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for DG429DJ-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 switching, power management, and sensing solutions.
The DG429DJ-E3 belongs to Vishay's legacy analog multiplexer product line, engineered for robust, latch-enabled signal routing in industrial, aerospace, and test equipment where deterministic timing and low distortion are critical.
FAQ
What is the maximum analog signal voltage range supported by the DG429DJ-E3?
The DG429DJ-E3 supports a full analog signal range from V− to V+, with absolute maximum supply ratings up to ±44 V. Under standard ±15 V dual-supply operation, it handles analog signals from −15 V to +15 V. In single-supply mode (V− = 0 V, V+ = 12 V), the usable analog range is 0 V to 12 V. This rail-to-rail conduction capability is guaranteed across the full −40 °C to +85 °C operating temperature range specified for the DG429DJ-E3.
Does the DG429DJ-E3 require external latching circuitry when used with a microprocessor bus?
No, the DG429DJ-E3 does not require external latching circuitry. It integrates on-chip TTL-compatible address latches for A0 and A1, controlled by the WR (write) and EN (enable) pins. When EN is high and WR transitions from low to high, the current address is captured and held-enabling direct connection to an 8-bit data bus without additional 74-series latches. This feature simplifies design in microprocessor-based data acquisition and ATE systems using the DG429DJ-E3.
How does the break-before-make function operate in the DG429DJ-E3, and what is its timing specification?
The DG429DJ-E3 implements hardware-enforced break-before-make switching to prevent momentary shorting between differential channels. During channel change, the previously selected pair disconnects before the newly selected pair connects. The minimum break interval (tOPEN) is 30 ns over full temperature range, verified under V+ = +15 V, V− = −15 V conditions. This timing ensures signal integrity in high-precision differential applications such as sensor multiplexing and instrumentation amplifier front-ends where crosstalk must be avoided.
Can the DG429DJ-E3 be operated from a single 12 V supply, and how does this affect its analog performance?
Yes, the DG429DJ-E3 supports single-supply operation at V+ = 12 V and V− = 0 V. In this configuration, the analog signal range is limited to 0 V to 12 V, and RDS(on) increases to 80 Ω typical (vs. 55 Ω at ±15 V). Charge injection remains at 4 pC, and transition time extends to 160 ns. All logic inputs retain TTL compatibility. This mode is validated in the official Vishay datasheet for the DG429DJ-E3 and is suitable for cost-sensitive or space-constrained industrial controls where dual supplies are unavailable.
What is the purpose of the RS (reset) pin on the DG429DJ-E3, and how should it be used during power-up?
The RS (reset) pin on the DG429DJ-E3 is an active-low master reset that clears all internal address latches and forces all four differential switches into the OFF state, regardless of EN, WR, or address input states. During power-up, RS should be held low until V+ and V− stabilize, then released high to initialize the device in a known OFF state. This prevents undefined channel selection and ensures deterministic startup behavior in systems like automatic test equipment and medical monitors relying on the DG429DJ-E3.
DG429DJ-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 5Ohm
- Voltage - Supply, Single (V+):
- 12V
- Voltage - Supply, Dual (V±):
- ±15V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 11pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 18-PDIP
DG429DJ-E3 FAQ
1.How can I place an order for DG429DJ-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG429DJ-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 DG429DJ-E3 reliable?
The price and inventory of DG429DJ-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG429DJ-E3 is usually 5 days.
3.What payment methods are accepted for DG429DJ-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG429DJ-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG429DJ-E3?
DG429DJ-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG429DJ-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 DG429DJ-E3?
For technical support, including DG429DJ-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG429DJ-E3 requirements.
6.How does Aetrix verify that DG429DJ-E3 is sourced from the original manufacturer or authorized distributors?
All DG429DJ-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 DG429DJ-E3 meets industry standards.
7.What is the process for return or replacement of DG429DJ-E3?
All DG429DJ-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG429DJ-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 DG429DJ-E3 part is unused and in its original packaging.
Return procedure for DG429DJ-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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