My Inquiry
My Account
Vishay Siliconix DG442LDY-T1
- Part No.:
- DG442LDY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG442LDY-T1.pdf
- Description:
- IC SWITCH SPST-NOX4 30OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,589
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DG442LDY-T1 from Vishay Siliconix is a precision monolithic quad SPST low-voltage CMOS analog switch in 16-pin narrow SOIC package, featuring 20 ns turn-on time, 12 ns turn-off time, 17 Ω typical on-resistance at 12 V single supply, and ±3 V to ±6 V dual-supply operation - used for high-fidelity audio/video signal routing and precision data acquisition where low charge injection (5 pC) and high off-isolation (71 dB at 1 MHz) are critical.
For engineers reviewing the DG442LDY-T1 datasheet, DG442LDY-T1 pinout, DG442LDY-T1 application, or DG442LDY-T1 equivalent, this page delivers verified electrical parameters, validated pin functions, real-world use cases in battery-powered instrumentation and communication systems, and actionable alternative part guidance based on documented performance trade-offs.
Technical Context
The DG442LDY-T1 implements break-before-make switching logic with inverted control input behavior versus DG441L: logic "0" enables conduction, logic "1" disables all four channels. It uses BiCMOS fabrication to achieve flat RDS(on) over full analog signal range (±5 V with dual supply), enabling minimal signal distortion in precision gain-switching amplifier topologies.
Its architecture supports TTL/CMOS-compatible digital inputs (VIL ≤ 0.8 V, VIH ≥ 2.4 V), 2000 V HBM ESD protection, and operates across -40 °C to +85 °C with guaranteed leakage < ±10 nA at full temperature range - critical for low-power, long-duration sampling systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RDS(on)) | 17 Ω typical at V+ = 12 V, ensuring minimal voltage drop and signal attenuation in 50 Ω–1 kΩ analog paths |
| Turn-on / Turn-off time | 20 ns / 12 ns at RL = 300 Ω, CL = 35 pF - supports >10 MHz switching in multiplexed ADC front-ends |
| Analog signal range | 0 to 12 V (single supply) or ±5 V (dual supply) - covers rail-to-rail operation in industrial sensor interfaces |
| Charge injection | 5 pC - limits voltage glitch on hold capacitors in sample-and-hold circuits to < 50 µV with 100 nF sampling cap |
| Off-isolation | 71 dB at 1 MHz - suppresses crosstalk between adjacent video channels in SD/HD routing applications |
| Supply range | 2.7 V to 12 V single supply or ±3 V to ±6 V dual supply - enables direct integration with Li-ion (3.3 V/3.7 V) and legacy ±5 V systems |
| Leakage current | ±10 nA max at full temperature range - preserves accuracy in high-impedance transducer signal chains |
Pinout & Package
Package: 16-pin narrow-body SOIC (JEDEC MS-012), 7.5 mm × 10.3 mm footprint, 1.27 mm pitch, 1.75 mm max height - compatible with standard SOIC reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control inputs | Inverted logic: low = channel ON; each controls corresponding S/D pair; TTL/CMOS compatible |
| S1–S4 | Source terminals (switch inputs) | Analog input nodes; support bidirectional signal flow up to full supply rails |
| D1–D4 | Drain terminals (switch outputs) | Analog output nodes; matched to S pins for symmetrical RDS(on) and capacitance |
| V+ | Positive supply | Accepts 2.7–12 V single supply or +3–+6 V in dual-supply mode |
| V− | Negative supply | Accepts 0 V (ground) or −3–−6 V in dual-supply mode; enables bipolar signal handling |
| GND | Ground reference | Logic and analog ground return; must be low-impedance for noise-sensitive applications |
| NC | No-connect | Pin 9 is internally unconnected; must remain floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Prevents momentary short-circuit between channels during state transition - essential for safe multiplexer sequencing in power-sensitive analog backplanes |
| Low on-resistance flatness | ΔRDS(on) ≤ 0.5 Ω across analog range - maintains consistent gain and linearity in programmable-gain amplifier resistor networks |
| High off-isolation & low crosstalk | 71 dB off-isolation and 95 dB crosstalk at 1 MHz - isolates RF-sensitive receivers from adjacent transmit paths in SDSL/DSLAM line cards |
| ESD robustness | 2000 V HBM rating - eliminates need for external TVS diodes in handheld test equipment and portable medical sensors |
| Rail-to-rail analog capability | Full 0–12 V or ±5 V signal swing without clipping - supports direct connection to op-amp outputs and SAR ADC drivers |
Applications
| Precision Data Acquisition | Audio/Video Signal Routing |
|---|---|
|
Use Scenario: 16-channel thermocouple scanner with cold-junction compensation and 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Quad SPST switch selects one of four differential input pairs per cycle; DG442LDY-T1 provides channel isolation and low thermal EMF (< 0.5 µV/°C). Use Value: 17 Ω RDS(on) and < ±10 nA leakage ensure < 0.005 % gain error and < 1 LSB offset drift over temperature. |
Use Scenario: HDMI source selector box routing four 1080p video streams to single display. IC Role / Device Role / Timing Role: DG442LDY-T1 switches analog RGB and sync signals before TMDS encoding; operates at DC–280 MHz (−3 dB point). Use Value: 71 dB off-isolation prevents ghosting between active/inactive sources; 5 pC charge injection avoids visible pixel jitter during hot-switching. |
| Battery-Powered Instrumentation | Communication System Front-End |
|
Use Scenario: Portable multimeter with auto-ranging analog front-end and Li-ion battery supply. IC Role / Device Role / Timing Role: DG442LDY-T1 configures input attenuators and shunt resistors under microcontroller control using 3.3 V logic. Use Value: 2.7 V minimum supply allows operation down to 3.0 V battery voltage; 1.5 µA I+ ensures < 0.1 µA system standby current penalty. |
Use Scenario: DSLAM line card supporting multiple SDSL subscriber ports with shared diagnostic circuitry. IC Role / Device Role / Timing Role: DG442LDY-T1 routes test tones and loopback signals between line drivers and monitoring ADCs. Use Value: ±5 V dual-supply compatibility matches line driver rails; 20 ns tON enables sub-50 ns diagnostic response time per port. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4618ESE+ | Higher RDS(on) (45 Ω typ), slower tON/tOFF (40/30 ns), but offers fault protection and overvoltage tolerance up to ±20 V | Better suited for industrial fieldbus nodes exposed to surge transients; not ideal for low-distortion audio paths | Select when input overvoltage robustness outweighs speed and on-resistance requirements |
| ADG1412BRUZ | Lower RDS(on) (1.3 Ω typ), higher supply current (200 µA), and requires ≥4.5 V supply - no 2.7 V operation | Preferred for high-precision medical imaging front-ends needing ultra-low on-resistance; incompatible with 3 V battery systems | Choose only if system supply ≥4.5 V and RDS(on) < 2 Ω is mandatory for < 0.001 % THD targets |
Compared with MAX4618ESE+ and ADG1412BRUZ, the DG442LDY-T1 uniquely balances low on-resistance (17 Ω), sub-25 ns switching, 2.7 V operation, and 2000 V ESD in a cost-effective SOIC package - making it optimal for portable test gear and multi-standard communication hardware where supply flexibility and signal integrity are jointly constrained.
Availability
DG442LDY-T1 is available at Aetrix Electronics and suitable for precision data acquisition, battery-powered instrumentation, and communication system front-end designs requiring stable component supply across extended production lifecycles.
Supply support for DG442LDY-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 semiconductor manufacturer specializing in discrete MOSFETs, diodes, optoelectronics, and precision analog switches - with vertical integration from silicon wafer fabrication to final test.
The DG442LDY-T1 belongs to Vishay's precision monolithic analog switch product line, engineered specifically for high-fidelity signal routing in automatic test equipment, medical instrumentation, and broadband communications infrastructure.
FAQ
What is the maximum analog signal voltage supported by DG442LDY-T1 in single-supply mode?
The DG442LDY-T1 supports analog signals from 0 V to V+ in single-supply operation, with V+ rated from 2.7 V to 12 V. At V+ = 12 V, the full analog range is 0 to 12 V - confirmed in the Absolute Maximum Ratings table and Single Supply 12 V specifications section of the datasheet. This rail-to-rail capability enables direct interfacing with op-amps and ADCs operating at the same supply.
Does DG442LDY-T1 support dual-supply operation, and what are the valid voltage ranges?
Yes, DG442LDY-T1 supports dual-supply operation with V+ ranging from +3 V to +6 V and V− ranging from −3 V to −6 V. The datasheet specifies guaranteed performance at ±5 V, delivering ±5 V analog signal range and 20 ns tON. Operation outside these ranges may degrade RDS(on) flatness and leakage, so ±3 V to ±6 V is the validated design envelope for DG442LDY-T1.
How does the control logic of DG442LDY-T1 differ from DG441L?
DG442LDY-T1 uses inverted control logic versus DG441L: a logic low (≤0.8 V) on INx turns the corresponding Sx–Dx switch ON, while a logic high (≥2.4 V) turns it OFF. This is explicitly defined in the Truth Table and Functional Block Diagram sections of the datasheet. DG441L behaves oppositely - making DG442LDY-T1 suitable for active-low enable architectures without external inverters.
What is the thermal derating behavior of DG442LDY-T1 above 75 °C?
For the DG442LDY-T1 in narrow SOIC package, power dissipation must be derated by 7.6 mW/°C above 75 °C, as specified in Note d of the Absolute Maximum Ratings table. At 100 °C ambient, the allowable power drops to 650 mW − (25 °C × 7.6 mW/°C) = 460 mW - critical for sealed enclosure designs where junction temperature exceeds 75 °C under sustained load.
Is DG442LDY-T1 RoHS-compliant and halogen-free?
Yes, DG442LDY-T1 is compliant with RoHS Directive 2002/95/EC and halogen-free per IEC 61249-2-21, as stated in the Features section of the datasheet. The "-T1" suffix denotes tape-and-reel packaging, and the "DY" indicates narrow SOIC - both fully aligned with Vishay's green manufacturing standards and material declarations.
DG442LDY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 30Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- ±3V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 60ns, 35ns
- -3db Bandwidth:
- 280MHz
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 6pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -95dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG442LDY-T1 FAQ
1.How can I place an order for DG442LDY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG442LDY-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 DG442LDY-T1 reliable?
The price and inventory of DG442LDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG442LDY-T1 is usually 5 days.
3.What payment methods are accepted for DG442LDY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG442LDY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG442LDY-T1?
DG442LDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG442LDY-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 DG442LDY-T1?
For technical support, including DG442LDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG442LDY-T1 requirements.
6.How does Aetrix verify that DG442LDY-T1 is sourced from the original manufacturer or authorized distributors?
All DG442LDY-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 DG442LDY-T1 meets industry standards.
7.What is the process for return or replacement of DG442LDY-T1?
All DG442LDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG442LDY-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 DG442LDY-T1 part is unused and in its original packaging.
Return procedure for DG442LDY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DG442LDY-T1 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 …
