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Vishay Siliconix DG408LDY-T1
- Part No.:
- DG408LDY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG408LDY-T1.pdf
- Description:
- IC MUX 8:1 29OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,846
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Product details
Overview
DG408LDY-T1 from Vishay Siliconix is a precision 8-channel single-ended analog multiplexer IC designed to route one of eight analog inputs to a common output under 3-bit binary address control (A0–A2). It operates on 3 V to 12 V single supply or ±3 V to ±6 V dual supply, delivers 17 Ω typical on-resistance, 38 ns enable turn-on time, and guarantees break-before-make switching-ideal for high-accuracy data acquisition in battery-powered test equipment.
For engineers reviewing the DG408LDY-T1 datasheet, DG408LDY-T1 pinout, DG408LDY-T1 application, or DG408LDY-T1 equivalent, key selection criteria include its low 0.2 nA max off-leakage, 1 pC charge injection, 82 dB off-isolation at 1 MHz, TTL/CMOS/LV logic compatibility, and SOIC-16 packaging with industrial temperature range (–40 °C to +85 °C).
Technical Context
The DG408LDY-T1 implements BiCMOS process technology to achieve low RDS(on), fast switching, and rail-to-rail analog signal handling across wide supply ranges. Its decoder/driver circuitry ensures deterministic channel selection with guaranteed break-before-make timing to prevent crosstalk during address transitions.
Digital control inputs (A0–A2, EN) accept logic thresholds as low as 0.4 V (VINL) and as high as 2.4 V (VINH) at 3 V supply, enabling direct interface with 3 V microcontrollers and FPGAs without level shifting. All analog channels support 0–12 V (single-supply) or ±5 V (dual-supply) signal ranges with matched on-resistance (<3 Ω matching) and flatness (≤7 Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Channels | 8 single-ended inputs → 1 common output; enables compact multi-sensor signal routing without external buffering. |
| On-Resistance (RDS(on)) | 17 Ω typ. at V+ = 12 V; ensures minimal gain error and voltage drop in precision measurement paths. |
| Switching Speed | tON(EN) = 38 ns, tOFF(EN) = 18 ns at V+ = 12 V; supports >10 MSPS multiplexed sampling in DAQ systems. |
| Off-Leakage Current | IS(OFF) ≤ 0.2 nA max. at 25 °C; preserves accuracy in high-impedance sensor interfaces (e.g., thermocouples, pH electrodes). |
| Charge Injection | 1 pC typ.; minimizes settling error and droop in sample-and-hold circuits using small hold capacitors. |
| Off-Isolation | 82 dB at 1 MHz; suppresses crosstalk between inactive channels in dense analog routing applications. |
| Supply Range | 3 V to 12 V single supply or ±3 V to ±6 V dual supply; supports portable, industrial, and mixed-signal system power architectures. |
Pinout & Package
Package: 16-pin narrow-body SOIC (JEDEC MS-012), 10.0 mm × 4.0 mm × 1.75 mm, surface-mount, RoHS-compliant, moisture sensitivity level 1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | S1–S8 Analog Inputs | Eight independent source terminals; each connects to selected input channel when addressed. |
| 9 | D Analog Output | Common drain terminal; carries routed analog signal to downstream amplifier or ADC. |
| 10 | V− Negative Supply | Ground reference for dual-supply operation or 0 V return in single-supply mode. |
| 11 | GND Ground | Digital and substrate ground; must be tied to system ground plane for noise immunity. |
| 12 | V+ Positive Supply | Primary power rail; sets analog signal range (0 to V+) and logic threshold levels. |
| 13 | A2 Address Bit 2 | MSB of 3-bit binary channel select; determines high-order channel group (4–7 vs. 0–3). |
| 14 | A1 Address Bit 1 | Middle bit of channel address; used with A0/A2 to uniquely select one of eight inputs. |
| 15 | A0 Address Bit 0 | LSB of channel address; resolves individual channel within selected group. |
| 16 | EN Enable Input | Active-high digital control; disables all switches (high-Z state) when logic low. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed timing prevents momentary shorting between adjacent channels during address changes. |
| Rail-to-rail analog signal range | Supports full 0–12 V (single) or ±5 V (dual) signals-no external clamping diodes required. |
| TTL/CMOS/LV logic compatibility | Accepts 3 V logic directly; eliminates level shifters in mixed-voltage FPGA/microcontroller systems. |
| 2000 V HBM ESD protection | Robust handling during PCB assembly and field service; reduces need for external TVS devices. |
| Low power consumption | I+ ≤ 0.7 μA max. at 25 °C; extends battery life in portable instrumentation and handheld meters. |
Applications
| Data Acquisition Systems | Battery-Powered Test Equipment |
|---|---|
Use Scenario: Multiplexing outputs from 8 thermocouple or RTD sensors into a single 24-bit sigma-delta ADC. IC Role / Device Role: Precision analog switch providing low-offset, low-leakage signal path selection. Use Value: Enables high-resolution temperature mapping with <0.1 °C error contribution from switch RDS(on) and leakage. |
Use Scenario: Routing audio line-level signals and sensor outputs in handheld multimeter or oscilloscope probe interface. IC Role / Device Role: Low-power, rail-to-rail analog multiplexer managing shared ADC and DAC resources. Use Value: Extends operating time per charge via sub-μA quiescent current and eliminates need for supply voltage translation. |
| Sample-and-Hold Circuits | Communication Signal Routing |
Use Scenario: Selecting one of eight analog inputs to charge a 100 pF hold capacitor before ADC conversion. IC Role / Device Role: Low-charge-injection analog switch minimizing voltage step error during acquisition phase. Use Value: Achieves <1 LSB settling error at 16-bit resolution due to 1 pC typical charge injection. |
Use Scenario: Switching between multiple DSL line drivers or SDSL transceivers in DSLAM front-end modules. IC Role / Device Role: High-isolation analog multiplexer isolating active and standby communication paths. Use Value: Maintains >80 dB channel separation up to 1 MHz, preventing interference in multi-line broadband aggregation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | 8-channel, 35 Ω RDS(on) typ. at +5 V; no break-before-make guarantee; 50 ns tON. | Higher on-resistance increases gain error in precision DC measurements; less suitable for sub-100 μV accuracy designs. | Select DG408LDY-T1 where low RDS(on), guaranteed BBM, and <40 ns switching are required. |
| ADG1408BRUZ | 8-channel, 4.7 Ω RDS(on) typ. at +5 V; ±15 V dual-supply capable; higher cost and larger TSSOP-16 package. | Superior on-resistance and wider voltage range-but over-specified and cost-prohibitive for 12 V/±5 V portable applications. | Choose DG408LDY-T1 for cost-sensitive, space-constrained 3–12 V systems needing proven reliability and SOIC footprint. |
Compared with MAX4617ESE+ and ADG1408BRUZ, the DG408LDY-T1 delivers optimal balance of speed (38 ns), precision (17 Ω, 0.2 nA), and integration (SOIC-16) for industrial and portable analog signal routing-without over-engineering supply range or bill-of-materials cost.
Availability
DG408LDY-T1 is available at Aetrix Electronics and suitable for data acquisition systems, battery-operated test equipment, and portable instrumentation requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for DG408LDY-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 switches, MOSFETs, and precision resistive solutions for industrial, automotive, and computing markets.
The DG408LDY-T1 belongs to Vishay's DG408L family of low-voltage analog multiplexers, engineered for high-accuracy signal routing in resource-constrained, low-power, and mixed-supply environments.
FAQ
What is the maximum analog signal voltage supported by the DG408LDY-T1?
The DG408LDY-T1 supports analog signals from 0 V to V+ in single-supply mode (e.g., 0–12 V at V+ = 12 V) or from V− to V+ in dual-supply mode (e.g., –5 V to +5 V at V± = ±5 V). Exceeding these rails risks clamping by internal diodes; forward diode current must remain within 30 mA absolute maximum rating.
Does the DG408LDY-T1 require external pull-up or pull-down resistors on address pins A0–A2?
No. The DG408LDY-T1 has CMOS-compatible digital inputs with defined logic thresholds (e.g., VINL ≤ 0.4 V, VINH ≥ 2.0 V at 3 V supply), so A0–A2 and EN may be driven directly from microcontroller GPIOs without external biasing-provided drive strength meets IIN ≤ ±1.5 μA specification.
How does the DG408LDY-T1 ensure channel isolation during switching transitions?
The DG408LDY-T1 guarantees break-before-make (BBM) switching: the previously selected channel fully disconnects before the next channel connects. Measured tOPEN is 11 ns (typ.) at 12 V, preventing momentary shorts and crosstalk-critical for maintaining signal integrity in multi-channel measurement systems.
Can the DG408LDY-T1 operate from a 3.3 V supply while interfacing with 1.8 V logic?
No. At V+ = 3.3 V, the DG408LDY-T1 requires VINL ≤ 0.4 V and VINH ≥ 2.0 V for reliable logic recognition. A 1.8 V logic high falls below the minimum 2.0 V threshold, risking misreads. Use level-shifting or select a 1.8 V–tolerant multiplexer like the TMUX1308 if interfacing with 1.8 V controllers.
What thermal derating applies to the DG408LDY-T1 in SOIC-16 package?
In its 16-pin narrow SOIC package, the DG408LDY-T1 has a power dissipation limit of 600 mW at 75 °C ambient. Above 75 °C, derate linearly at 7.6 mW/°C-e.g., maximum allowable power drops to 452 mW at +95 °C ambient. Ensure adequate PCB copper area and airflow for sustained operation near thermal limits.
DG408LDY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 29Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- ±3V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 55ns, 25ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 7pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -82dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG408LDY-T1 FAQ
1.How can I place an order for DG408LDY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG408LDY-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 DG408LDY-T1 reliable?
The price and inventory of DG408LDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG408LDY-T1 is usually 5 days.
3.What payment methods are accepted for DG408LDY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG408LDY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG408LDY-T1?
DG408LDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG408LDY-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 DG408LDY-T1?
For technical support, including DG408LDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG408LDY-T1 requirements.
6.How does Aetrix verify that DG408LDY-T1 is sourced from the original manufacturer or authorized distributors?
All DG408LDY-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 DG408LDY-T1 meets industry standards.
7.What is the process for return or replacement of DG408LDY-T1?
All DG408LDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG408LDY-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 DG408LDY-T1 part is unused and in its original packaging.
Return procedure for DG408LDY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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