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Analog Devices Inc./Maxim Integrated DG442DY+T
- Part No.:
- DG442DY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG442DY+T.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,779
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Product details
Overview
DG442DY+T 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 delivers 85Ω max on-resistance, 4Ω max on-resistance matching between channels, <5nA off-leakage at +85°C, 10pC max charge injection, and rail-to-rail analog signal handling up to ±15.5V with ±15V supplies - used in test equipment, audio-signal routing, and battery-operated systems.
For engineers reviewing the DG442DY+T datasheet, DG442DY+T pinout, DG442DY+T application, or DG442DY+T equivalent, key selection criteria include guaranteed rFLAT(ON) ≤9Ω over signal range, TTL/CMOS logic compatibility, dual-supply operation (±4.5V to ±20V), low power consumption (1.65mW), and exposed-pad SO package thermal performance.
Technical Context
The DG442DY+T implements four independent SPST switches with active-high digital control inputs (IN1–IN4), each connecting source (Sx) to drain (Dx) when asserted. Its silicon-gate 44V process ensures robust ESD tolerance (2000V min per Method 3015.7) and stable operation across -40°C to +85°C.
Switching is bidirectional and symmetric: on-resistance flatness is guaranteed only under bipolar supply conditions, and leakage parameters (ID(OFF), IS(OFF)) are 100% tested at maximum hot temperature. The exposed pad (EP) must be connected to V+ for thermal and electrical integrity in the Thin QFN variant - but DG442DY+T uses Narrow SO packaging without EP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (rDS(ON)) | 85Ω max at TA = +25°C, V± = ±15V - ensures minimal signal attenuation in precision analog paths |
| On-Resistance Match | 4Ω max between channels - enables matched gain/attenuation in multi-channel instrumentation |
| Charge Injection | 10pC max - reduces voltage glitch in sample-and-hold and multiplexed ADC front-ends |
| Off-Leakage Current | <5nA at +85°C - preserves DC accuracy in high-impedance sensor interfaces |
| Supply Range | ±4.5V to ±20V (bipolar) or +10V to +30V (single) - supports industrial and battery-powered rails |
| Logic Compatibility | TTL/CMOS - simplifies interface with microcontrollers and FPGAs without level-shifting |
| Turn-On/Off Time | 250ns / 170ns max - suitable for medium-speed signal switching in comms and test gear |
Pinout & Package
DG442DY+T is supplied in a 16-pin narrow SO (Small Outline) package, RoHS-compliant and lead(Pb)-free. Pin 1 is S1 (Source 1); pins 2–4, 9–12, and 15–16 form the functional I/O set; pin 5 is GND; pin 4 is V−; pin 11 is V+; pin 10 is N.C. (not internally connected). No exposed pad is present in this SO variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (pins 15,14,7,6) | Digital control input | Active-high logic enables corresponding S–D switch; compatible with 0.8V/2.4V thresholds |
| S1–S4 (pins 1,3,4,12) | Analog source terminal | Input node for bidirectional signal flow; connects to D when switch is ON |
| D1–D4 (pins 2,13,5,8) | Analog drain terminal | Output node; identical electrical behavior to S; no polarity dependence |
| V+ (pin 11) | Positive supply rail | Bias for internal circuitry and substrate; must be ≥ |V−| + 0.3V in bipolar mode |
| V− (pin 4) | Negative supply rail | Reference for analog signal swing and internal bias; clamped by protection diodes |
| GND (pin 5) | Logic ground reference | Return path for digital inputs; separate from analog signal common in mixed-signal layouts |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ (±15.5V typical), enabling full dynamic range in ±15V systems |
| Guaranteed rFLAT(ON) ≤9Ω | Ensures consistent on-resistance across the entire analog input range - critical for linearity in data acquisition |
| Low power consumption (1.65mW) | Reduces self-heating and thermal drift in densely packed PCBs and portable instruments |
| ESD tolerance ≥2000V | Meets Method 3015.7 - improves robustness during board assembly and field handling |
| Improved off-leakage at temperature | <5nA at +85°C - maintains accuracy in automotive and industrial environments without external guarding |
Applications
| Test Equipment Signal Routing | Audio-Signal Multiplexing |
|---|---|
Use Scenario: Channel selection in automated test equipment (ATE) for routing calibration signals between DUT and measurement instruments. IC Role / Device Role / Timing Role: Quad SPST switch providing isolated, low-distortion analog paths with sub-250ns switching for sequential channel scanning. Use Value: 4Ω max rDS(ON) match ensures uniform gain error across channels; 10pC charge injection prevents settling errors in precision DC measurements. |
Use Scenario: Input/output switching in professional audio mixers to route microphone, line, or instrument signals without audible artifacts. IC Role / Device Role / Timing Role: Bidirectional analog gate enabling zero-crossing mute and clean source selection under CMOS control. Use Value: Rail-to-rail ±15.5V capability handles pro-audio peak levels; low 85Ω rDS(ON) avoids insertion loss in high-Z microphone paths. |
| Battery-Powered Data Loggers | Heads-Up Display (HUD) Interface |
Use Scenario: Multiplexing sensor inputs (thermocouple, RTD, strain gauge) into a shared ADC in portable environmental monitors. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating high-impedance sensors during inactive cycles to preserve measurement integrity. Use Value: <5nA off-leakage at +85°C prevents DC offset drift in unattended long-term logging; 1.65mW total power extends battery life. |
Use Scenario: Selecting between multiple video sources (camera, navigation, radar overlay) feeding a HUD combiner optic. IC Role / Device Role / Timing Role: High-fidelity analog switch routing composite or RGB video with minimal crosstalk and timing skew. Use Value: -100dB off-isolation rejection ratio suppresses ghosting between video channels; 170ns tOFF enables fast source switching during display updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG442BRZ | 80Ω max rDS(ON), 2.5V–12V single-supply only, no bipolar support | Limited to low-voltage systems; unsuitable for ±15V industrial signal chains | Select when operating exclusively from 3.3V/5V rails and requiring lower on-resistance at reduced voltage |
| TS5A23157DCUR | 0.9Ω typical rDS(ON) at 3.3V, but max ±5.5V analog range and 125°C max temp | Higher bandwidth but narrower voltage range; not rated for extended industrial temperature | Prefer for high-speed, low-voltage consumer electronics where rail-to-rail ±15V operation is unnecessary |
Compared with ADG442BRZ and TS5A23157DCUR, DG442DY+T uniquely supports ±20V bipolar supplies and guarantees on-resistance flatness and leakage specs across -40°C to +85°C - making it the only option among the three qualified for precision, wide-range industrial analog routing.
Availability
DG442DY+T is available at Aetrix Electronics and suitable for test equipment, audio-signal routing, and battery-operated systems requiring stable component supply, long-term lifecycle assurance, and lead(Pb)-free compliance.
Supply support for DG442DY+T 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) designs high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.
The DG442DY+T belongs to Maxim's precision analog switch product line, engineered for low distortion, matched channel performance, and rugged operation in demanding signal-path applications including instrumentation and military-grade systems.
FAQ
What is the operating temperature range for DG442DY+T?
DG442DY+T is rated for -40°C to +85°C ambient operation, validated across its full electrical specification range including on-resistance, leakage, and switching times. This industrial temperature grade makes DG442DY+T suitable for deployment in harsh environments such as factory automation controllers and outdoor test instrumentation where thermal stability is critical.
Does DG442DY+T support single-supply operation?
Yes, DG442DY+T supports single-supply operation from +10V to +30V, with V− tied to ground. In this configuration, the analog signal range extends from 0V to V+, enabling use in battery-powered systems like portable data loggers and handheld meters. However, on-resistance flatness and matching specifications are guaranteed only under bipolar supply conditions.
What is the function of the N.C. pin (pin 10) on DG442DY+T?
Pin 10 on DG442DY+T is labeled N.C. (Not Internally Connected) and must remain unconnected on the PCB. It serves no electrical function and is not bonded to any die structure. Leaving it floating poses no risk, but routing traces or applying solder mask over it is recommended to prevent accidental shorting or contamination during assembly.
How does DG442DY+T handle overvoltage conditions on analog terminals?
DG442DY+T includes internal clamp diodes that limit analog terminal (S/D) voltages to within 0.3V of V+ or V−. If signals exceed these rails, current flows through the clamps - so external series resistors or external blocking diodes (as shown in Maxim's Figure 1) are required to limit current to ≤30mA. Without protection, overvoltage can cause latch-up or permanent damage.
Is DG442DY+T pin-compatible with legacy DG442 variants?
Yes, DG442DY+T maintains identical pinout, footprint, and electrical behavior with all standard DG442 variants in the 16-pin narrow SO package (e.g., DG442CY, DG442DJ), including logic polarity, supply pin locations, and terminal assignments. The "+T" suffix denotes lead(Pb)-free packaging and tape-and-reel delivery - no design changes are needed for drop-in replacement.
DG442DY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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+T FAQ
1.How can I place an order for DG442DY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG442DY+T 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+T reliable?
The price and inventory of DG442DY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG442DY+T is usually 5 days.
3.What payment methods are accepted for DG442DY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG442DY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG442DY+T?
DG442DY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG442DY+T 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+T?
For technical support, including DG442DY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG442DY+T requirements.
6.How does Aetrix verify that DG442DY+T is sourced from the original manufacturer or authorized distributors?
All DG442DY+T 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+T meets industry standards.
7.What is the process for return or replacement of DG442DY+T?
All DG442DY+T units undergo pre-shipment inspection (PSI). If there is an issue with DG442DY+T, 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+T part is unused and in its original packaging.
Return procedure for DG442DY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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