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Analog Devices Inc./Maxim Integrated DG309DY+T
- Part No.:
- DG309DY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG309DY+T.pdf
- Description:
- IC SW SPST-NCX4 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,024
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Product details
Overview
DG309DY+T from Maxim Integrated is a quad SPST analog switch with normally closed (NC) configuration, designed for precision signal routing in bipolar or single-supply systems. It delivers 60Ω typical on-resistance, <120ns turn-on time, <90ns turn-off time, and supports ±5V to ±20V dual supplies or +5V to +30V single supply - used in military radios and heads-up displays where reliable analog path control is critical.
For engineers reviewing the DG309DY+T datasheet, DG309DY+T pinout, DG309DY+T application, or DG309DY+T equivalent, key selection criteria include NC logic behavior, 44V breakdown rating, -40°C to +85°C industrial temperature range, SO-16 narrow-body package, and CMOS-compatible control inputs with sub-1µA leakage.
Technical Context
The DG309DY+T implements monolithic low-power CMOS architecture with four independent SPST switches, each featuring matched channel characteristics and substrate-isolated V+ connection. Its NC topology ensures default conduction without control signal, enabling fail-safe signal paths in guidance systems and test equipment.
It operates across wide analog voltage ranges (±15V typical), maintains low charge injection (±10pC), and achieves high off-isolation (78dB at 500kHz) - critical for sample-and-hold accuracy and low-distortion communications switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST, normally closed (NC) - all channels conduct when control input is low |
| rDS(ON) | 60Ω typical at ±15V supplies - enables low insertion loss in audio and sensor signal paths |
| tON / tOFF | 130ns / 90ns typical - supports >5MHz switching in automated test equipment |
| Analog Range | ±15V max (V+ to V−) - compatible with industrial ±12V and ±15V signal chains |
| Breakdown Voltage | 44V - allows 30V peak-to-peak blocking capability with safety margin |
| Supply Range | +5V to +30V (single) or ±5V to ±20V (dual) - flexible for legacy and modern power architectures |
| Leakage Current | ±100nA max at TMAX - preserves accuracy in high-impedance sample-and-hold nodes |
Pinout & Package
Package: 16-pin narrow SO (SOIC-N), body width 3.9mm, JEDEC MS-012AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 1,8,9,16) | CMOS Logic Control Inputs | Active-low for NC operation - low = channel closed; high = open; TTL/CMOS compatible |
| S1–S4 (Pins 3,6,11,14) | Analog Source Terminals | Input side of SPST switch - connected to signal source; bidirectional current flow supported |
| D1–D4 (Pins 2,7,10,15) | Analog Drain Terminals | Output side of SPST switch - routed to load or next stage; matches Sx pin pairing |
| V+ (Pin 13) | Positive Supply / Substrate Tie | Connects to most positive rail and internal substrate - critical for latch-up immunity |
| V− (Pin 4) | Negative Supply | Connects to most negative rail; required for dual-supply operation; GND in single-supply mode |
| GND (Pin 5) | Ground Reference | Signal reference and return path; separate from power ground in mixed-signal layouts |
| N.C. (Pin 12) | No Connect | Not internally bonded - must remain unconnected per design; no routing or pull-up/pull-down |
Key Features
| Feature | Design Value |
|---|---|
| 60Ω rDS(ON) typical | Minimizes signal attenuation and thermal drift in precision instrumentation front-ends |
| CMOS logic compatibility | Supports direct interface with microcontrollers and FPGAs without level-shifting circuitry |
| ±10pC charge injection | Reduces sampling error in data acquisition systems using external hold capacitors |
| 78dB off-isolation @ 500kHz | Prevents crosstalk between active and inactive channels in multi-channel test fixtures |
| Monolithic CMOS process | Ensures matched channel performance and eliminates inter-device timing skew |
Applications
| Test Equipment | Military Radios |
|---|---|
|
Use Scenario: Automated signal path switching in RF/microwave test sets requiring reconfigurable stimulus-response routing. IC Role / Device Role / Timing Role: Quad SPST NC switch providing fail-safe continuity during controller boot or reset sequences. Use Value: Ensures uninterrupted signal integrity during power-up; 44V breakdown withstands transient surges common in field-deployed test gear. |
Use Scenario: Audio and IF signal routing in ruggedized HF/VHF transceivers operating across extended temperature ranges. IC Role / Device Role / Timing Role: Analog path selector enabling rapid band/channel switching while maintaining low distortion. Use Value: 60Ω rDS(ON) and ±15V analog range preserve SNR in sensitive receiver front-ends under harsh environmental conditions. |
| Guidance Systems | Heads-Up Displays |
|
Use Scenario: Redundant sensor signal multiplexing in inertial measurement units (IMUs) where continuous path availability is mandatory. IC Role / Device Role / Timing Role: Normally closed switch ensuring default signal flow to flight control processors during initialization. Use Value: NC behavior eliminates need for external pull-downs or startup sequencing logic - reduces BOM count and failure modes. |
Use Scenario: Video signal switching between primary and backup display drivers in avionics HUDs. IC Role / Device Role / Timing Role: Low-capacitance analog switch (CD(OFF) = 8pF) minimizing video edge degradation. Use Value: 27pF channel-on capacitance maintains bandwidth >20MHz for VGA-resolution overlay graphics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG409BRZ | Quad SPST, but NO/NC configurable per channel; 35Ω rDS(ON); requires dual supply only | Used in programmable gain amplifiers where per-channel polarity control is needed | Select ADG409BRZ when channel-level NO/NC flexibility outweighs DG309DY+T's fixed NC simplicity |
| TS5A3157DCKR | Single SPST, 0.75Ω rDS(ON); 5V-only supply; 1.5ns tON; SC-70-6 package | Targeted at low-voltage portable electronics, not industrial/military analog routing | Choose TS5A3157DCKR only for space-constrained, battery-powered designs needing ultra-low on-resistance |
Compared with ADG409BRZ and TS5A3157DCKR, DG309DY+T uniquely combines fixed NC topology, 44V breakdown, and -40°C to +85°C SO-16 packaging - making it optimal for ruggedized analog signal routing where default continuity and high-voltage robustness are non-negotiable.
Availability
DG309DY+T is available at Aetrix Electronics and suitable for military radios, guidance and control systems, heads-up displays, and automated test equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for DG309DY+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 precision analog, mixed-signal, and high-reliability ICs for industrial, automotive, and defense applications.
The DG309DY+T belongs to Maxim's legacy analog switch family engineered for high-voltage signal routing in mission-critical systems where NC behavior, supply flexibility, and ruggedized specs are essential.
FAQ
What does the "DY" suffix indicate in DG309DY+T?
The "DY" suffix denotes the narrow SOIC (SO-16) package variant rated for -40°C to +85°C operation. DG309DY+T is lead-free and RoHS-compliant, with tape-and-reel packaging optimized for automated assembly. This specific variant replaces older DG309DJ (plastic DIP) in surface-mount designs requiring higher reliability and smaller footprint.
How does DG309DY+T differ from DG308A in functionality?
DG309DY+T is normally closed (NC), meaning all four switches conduct when control inputs are low; DG308A is normally open (NO) and requires active-low signals to close. Both share identical pinout, supply ranges, and electrical specs - the functional difference lies solely in default state, making DG309DY+T ideal for fail-safe signal paths where continuity must be guaranteed during power loss or controller reset.
Can DG309DY+T operate with a single +12V supply?
Yes, DG309DY+T supports single-supply operation from +5V to +30V. With +12V applied to V+, GND tied to V−, and logic inputs referenced to GND, it functions correctly - though rDS(ON) increases slightly versus ±15V dual-supply operation. The analog signal range becomes 0V to +12V, and absolute maximum ratings require analog voltages to stay within the supply rails.
What is the purpose of Pin 12 (N.C.) on DG309DY+T?
Pin 12 is a no-connect terminal - not internally bonded or electrically active. It must remain unconnected in PCB layout; neither grounding nor routing is permitted. This pin exists for mechanical symmetry and package compatibility with other devices in the DG308A/DG309 family, and violating this requirement risks compromising device reliability or ESD performance.
Does DG309DY+T support bidirectional analog signal flow?
Yes, DG309DY+T supports fully bidirectional analog signal routing - source (Sx) and drain (Dx) terminals are interchangeable. The device exhibits symmetrical rDS(ON), leakage, and capacitance regardless of signal direction, enabling use in both transmit and receive paths of full-duplex systems like PBX interfaces and communication transceivers.
DG309DY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 5V ~ 30V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 250ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- -10pC
- Channel Capacitance (CS(off), CD(off)):
- 11pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 5nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG309DY+T FAQ
1.How can I place an order for DG309DY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG309DY+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 DG309DY+T reliable?
The price and inventory of DG309DY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG309DY+T is usually 5 days.
3.What payment methods are accepted for DG309DY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG309DY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG309DY+T?
DG309DY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG309DY+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 DG309DY+T?
For technical support, including DG309DY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG309DY+T requirements.
6.How does Aetrix verify that DG309DY+T is sourced from the original manufacturer or authorized distributors?
All DG309DY+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 DG309DY+T meets industry standards.
7.What is the process for return or replacement of DG309DY+T?
All DG309DY+T units undergo pre-shipment inspection (PSI). If there is an issue with DG309DY+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 DG309DY+T part is unused and in its original packaging.
Return procedure for DG309DY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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