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Analog Devices Inc./Maxim Integrated DG442DY
- Part No.:
- DG442DY
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG442DY.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,124
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Product details
Overview
DG442DY from Maxim Integrated is a quad, normally-open (NO), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in bipolar or single-supply systems. It features 85Ω max on-resistance, <5nA off-leakage at +85°C, 10pC max charge injection, 250ns max tON, and operates from ±4.5V to ±20V or +10V to +30V supplies-used in test equipment, audio-signal routing, and battery-operated instrumentation.
For engineers reviewing the DG442DY datasheet, DG442DY pinout, DG442DY application, or DG442DY equivalent, key selection criteria include guaranteed rDS(ON) matching (4Ω max), rail-to-rail analog signal handling, TTL/CMOS logic compatibility, low power consumption (1.65mW), and ESD tolerance (2000V min per Method 3015.7).
Technical Context
The DG442DY implements four independent SPST switches with active-high control logic and no internal connection between channels. Each switch conducts bidirectionally with matched on-resistance across all four channels and flat on-resistance (<9Ω variation) over the full analog signal range under bipolar supply conditions.
It uses a 44V silicon-gate process enabling operation up to ±20V supplies while maintaining low leakage and fast switching. The device requires proper supply sequencing (V+ before V−) and supports unbalanced supplies like +24V/−5V, with analog range limited only by supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| rDS(ON) max | 85Ω - Ensures minimal signal attenuation and voltage drop in precision analog paths. |
| rDS(ON) match | 4Ω max - Enables accurate channel-to-channel signal matching in multiplexed or differential applications. |
| Charge injection | 10pC max - Reduces sampling error and pedestal distortion in sample-and-hold circuits. |
| tON / tOFF | 250ns / 170ns max - Supports high-speed signal switching in automated test and comms systems. |
| Analog range | Rail-to-rail (±15.5V typical) - Allows full utilization of supply voltage headroom without clipping. |
| Off-leakage @ +85°C | <5nA - Maintains signal integrity in high-impedance sensor interfaces and battery-powered standby modes. |
| Supply range | ±4.5V to ±20V or +10V to +30V - Provides flexibility for industrial, military, and portable designs. |
Pinout & Package
Package: 16-pin narrow SO (SOIC-16), -40°C to +85°C operating temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 9, 8 | IN1–IN4 | Active-high digital control inputs; TTL/CMOS compatible; drive internal gate of respective switch. |
| 2, 15, 10, 7 | D1–D4 | Drain terminals - bidirectional analog signal nodes; connected to load or downstream circuitry. |
| 3, 14, 11, 6 | S1–S4 | Source terminals - bidirectional analog signal nodes; connected to source or upstream signal path. |
| 4 | V− | Negative supply rail input; must be connected for bipolar operation or grounded for single-supply use. |
| 5 | GND | Digital ground reference; separate from analog signal return unless system design mandates common ground. |
| 12 | V+ | Positive supply rail input; also tied to substrate; connects to exposed pad in QFN variants (not applicable to DG442DY). |
| 13 | N.C. | No internal connection - must remain unconnected; not used for thermal or electrical purposes. |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPST NO configuration | Four independent, non-latching switches with active-high logic - simplifies control logic in multi-channel routing. |
| Guaranteed rFLAT(ON) | 9Ω max variation across full analog range under bipolar supply - ensures consistent gain and linearity in measurement paths. |
| Low power dissipation | 1.65mW max at +25°C - enables use in thermally constrained or energy-sensitive portable systems. |
| ESD robustness | 2000V minimum per Method 3015.7 - improves manufacturing yield and field reliability without external protection. |
| Rail-to-rail signal handling | Supports analog signals from V− to V+ - eliminates level-shifting requirements in wide-dynamic-range applications. |
Applications
| Test Equipment Signal Routing | Audio-Signal Switching |
|---|---|
|
Use Scenario: Automated test systems route multiple sensor or DUT signals to shared ADCs or instruments using multiplexed analog paths. IC Role / Device Role / Timing Role: DG442DY acts as a precision, low-distortion analog multiplexer front-end with matched channel resistance and minimal charge injection. Use Value: Enables accurate multi-channel measurements without calibration drift due to rDS(ON) mismatch or sampling artifacts. |
Use Scenario: Professional audio mixers dynamically reconfigure input/output signal paths between microphones, effects processors, and amplifiers. IC Role / Device Role / Timing Role: DG442DY serves as a silent, click-free analog switch for real-time audio routing with rail-to-rail swing capability. Use Value: Delivers low THD+N and no audible pop/click during switching thanks to sub-10pC charge injection and fast, controlled transitions. |
| Battery-Powered Instrumentation | Military Radio Front-Ends |
|
Use Scenario: Portable multimeters, data loggers, and handheld analyzers require low-power, high-accuracy analog switching for sensor selection and range scaling. IC Role / Device Role / Timing Role: DG442DY functions as a low-quiescent-current, high-isolation analog switch enabling extended battery life and stable DC accuracy. Use Value: Sub-5nA off-leakage at +85°C preserves measurement integrity in high-impedance probe circuits during long-term field deployment. |
Use Scenario: Tactical radios perform rapid RF front-end reconfiguration including antenna switching, filter bypass, and receive path isolation. IC Role / Device Role / Timing Role: DG442DY provides ruggedized analog path control in harsh environments with guaranteed operation from −40°C to +85°C. Use Value: 2000V ESD rating and 44V process tolerance ensure survivability against electrostatic events and supply transients in mobile platforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG442BRZ | 44V supply rating, 40Ω rDS(ON) typ, 20pC charge injection, SOIC-16 package | Higher on-resistance flatness spec not guaranteed; lower ESD rating (1500V HBM) | Preferred where lower typical on-resistance outweighs need for guaranteed matching or ESD margin. |
| TS5A23157DGSR | Single-supply only (+1.65V to +5.5V), 0.9Ω rDS(ON) typ, 15pC charge injection, 10-pin VSSOP | Not suitable for ±15V or high-voltage analog routing; optimized for low-voltage portable audio | Select when operating below +5.5V and prioritizing ultra-low on-resistance over high-voltage capability. |
Compared with DG442DY, ADG442BRZ offers lower typical on-resistance but lacks guaranteed rDS(ON) matching and reduced ESD robustness, while TS5A23157DGSR enables ultra-low-voltage operation but cannot support the ±20V or +30V supply ranges required in industrial test and military systems.
Availability
DG442DY is available at Aetrix Electronics and suitable for test equipment, audio-signal routing, and battery-operated instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for DG442DY 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and automotive markets.
The DG442DY belongs to Maxim's legacy precision analog switch product line, engineered for high-voltage, low-distortion signal routing in demanding test, military, and instrumentation applications.
FAQ
What is the maximum supply voltage rating for DG442DY?
The DG442DY has an absolute maximum V+ rating of 44V referenced to V−, with recommended dual-supply operation from ±4.5V to ±20V or single-supply operation from +10V to +30V. Exceeding ±20V or +30V risks permanent damage, and the difference between V+ and V− must not exceed +44V per the Absolute Maximum Ratings table in the DG442DY datasheet.
Does DG442DY support rail-to-rail analog signal switching?
Yes, the DG442DY supports rail-to-rail analog signal handling - its analog inputs (S and D pins) can swing from V− to V+ without degradation in on-resistance or increased distortion. This capability is explicitly confirmed in the "Existing Features" section and verified across electrical characteristics tables for both bipolar and single-supply configurations of the DG442DY.
What is the logic polarity of DG442DY control inputs?
The DG442DY features active-high logic: each INx pin controls its corresponding SPST switch such that a logic high (≥2.4V) turns the switch ON (closed), and a logic low (≤0.8V) turns it OFF (open). This is confirmed in the functional diagram, truth table, and pin description sections of the DG442DY datasheet, distinguishing it from the DG441DY (normally closed, same logic polarity).
Is DG442DY pin-compatible with older industry-standard DG442 variants?
Yes, the DG442DY is a direct replacement for legacy DG442 devices in the 16-pin narrow SO package, retaining identical pinout, logic behavior, and electrical interface. The "Plug-In Upgrades" section of the DG442DY datasheet explicitly states backward compatibility, and all pin functions (IN1–IN4, S1–S4, D1–D4, V+, V−, GND, N.C.) match the original industry-standard layout.
What is the guaranteed off-leakage current specification for DG442DY at elevated temperature?
The DG442DY guarantees off-leakage current of less than 5nA at +85°C, as specified in the "New Features" list and confirmed in the Electrical Characteristics tables under IS(OFF) and ID(OFF) parameters. This value is 100% tested at maximum rated hot temperature and correlated at +25°C - a key improvement over earlier DG442 versions and critical for high-impedance sensor and sample-and-hold applications.
DG442DY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 4Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 250ns, 170ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 4pF, 4pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -100dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG442DY FAQ
1.How can I place an order for DG442DY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG442DY 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 DG442DY reliable?
The price and inventory of DG442DY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG442DY is usually 5 days.
3.What payment methods are accepted for DG442DY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG442DY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG442DY?
DG442DY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG442DY 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 DG442DY?
For technical support, including DG442DY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG442DY requirements.
6.How does Aetrix verify that DG442DY is sourced from the original manufacturer or authorized distributors?
All DG442DY 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 DG442DY meets industry standards.
7.What is the process for return or replacement of DG442DY?
All DG442DY units undergo pre-shipment inspection (PSI). If there is an issue with DG442DY, 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 DG442DY part is unused and in its original packaging.
Return procedure for DG442DY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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