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Analog Devices Inc./Maxim Integrated DG509ADY-T
- Part No.:
- DG509ADY-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG509ADY-T.pdf
- Description:
- IC SWITCH SP4T X 2 450OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,015
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Product details
Overview
DG509ADY-T from Maxim Integrated is a monolithic CMOS differential 4-channel (2-of-8) analog multiplexer with ±4.5V to ±18V dual-supply operation, break-before-make switching, and TTL/CMOS-compatible logic inputs. It features 400Ω typical on-resistance, <0.2µs break-before-make interval, and <1nA off-leakage at ±10V, enabling precision signal routing in data-acquisition systems.
For engineers reviewing the DG509ADY-T datasheet, DG509ADY-T pinout, DG509ADY-T application, or DG509ADY-T equivalent, key selection criteria include its differential channel architecture, -40°C to +85°C industrial temperature range, narrow SOIC-16 package, and guaranteed latchup immunity during power-off signal presence.
Technical Context
The DG509ADY-T implements a fully symmetrical, bidirectional analog switch matrix controlled by two address bits (A0, A1) and an active-high enable (EN), supporting simultaneous connection of four differential pairs (S1A/S1B through S4A/S4B to DA/DB). Its monolithic CMOS design ensures matched on-resistance and capacitance across channels.
It operates with true rail-to-rail analog signal handling (±15V range), supports break-before-make timing to prevent signal shorting during channel transitions, and maintains stable performance across supply voltages from ±4.5V to ±18V without external biasing or level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V - Supports full-range bipolar signal routing without clipping or distortion in ±15V systems. |
| Drain-Source On-Resistance | 400Ω typ - Enables low insertion loss and minimal gain error in precision measurement paths. |
| Break-Before-Make Interval | 0.2µs max - Prevents momentary short-circuit between channels during address changes. |
| Off-Leakage Current | ±50nA max at ±10V - Ensures high-impedance isolation critical for high-resolution ADC front-ends. |
| Enable Switching Time | 0.4µs tON(EN), 0.2µs tOFF(EN) - Allows fast channel enabling/disabling in time-multiplexed sampling systems. |
| Supply Voltage Range | ±4.5V to ±18V - Compatible with legacy industrial ±5V, ±12V, and ±15V power rails. |
| Logic Compatibility | TTL and CMOS - Interfaces directly with microcontrollers, FPGAs, and logic families without level shifters. |
Pinout & Package
Package: 16-pin narrow SOIC (SOIC-N), 3.9mm body width, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting one of four differential channel pairs (00–11). |
| 2 | EN | Active-high enable controlling global on/off state of all switches; disables all channels when low. |
| 3 | V− | Negative supply rail input; must be connected to system negative voltage (e.g., −15V). |
| 4–7 | S1A–S4A | First side of four differential analog inputs/outputs; bidirectional signal path. |
| 8, 9 | DA, DB | Differential analog outputs (or inputs); connected to selected SxA/SxB pair when enabled. |
| 10–13 | S4B–S1B | Second side of four differential analog inputs/outputs; complements S1A–S4A for balanced routing. |
| 14 | V+ | Positive supply rail input; must be connected to system positive voltage (e.g., +15V). |
| 15 | GND | Analog ground reference; provides common return for logic and internal bias networks. |
Key Features
| Feature | Design Value |
|---|---|
| Latchup-proof construction | Guaranteed no latchup even when power supplies are off but analog signals remain present. |
| Symmetrical, bidirectional operation | Identical on-resistance and capacitance in either direction enables flexible signal flow in mux/demux configurations. |
| Plug-in upgrade for DG509A | Pin- and function-compatible replacement with lower RDS(ON), faster enable timing, and reduced leakage. |
| Low-power CMOS design | Typical supply current ≤0.2mA per rail - extends battery life in portable data loggers and handheld test equipment. |
| Break-before-make switching | Hardware-enforced channel isolation prevents transient shorts during address transitions. |
Applications
| Data-Acquisition Systems | Control Systems |
|---|---|
|
Use Scenario: Multiplexing multiple sensor inputs (e.g., thermocouples, strain gauges) into a single high-resolution ADC. IC Role / Device Role / Timing Role: Differential analog multiplexer routing matched signal pairs while preserving common-mode rejection. Use Value: 400Ω on-resistance and <50nA leakage minimize gain/offset errors and maintain >16-bit effective resolution. |
Use Scenario: Selecting feedback signals from multiple actuators or position sensors in closed-loop industrial controllers. IC Role / Device Role / Timing Role: High-voltage-tolerant analog switch enabling safe routing of ±10V control signals under real-time PLC command. Use Value: ±18V supply support and break-before-make timing ensure robust operation in noisy factory environments. |
| Aircraft Heads-Up Displays | Signal Routing |
|
Use Scenario: Switching video sync pulses and analog video signals between redundant display drivers in avionics systems. IC Role / Device Role / Timing Role: Low-capacitance (12pF CD(OFF)) differential mux minimizing signal integrity degradation at video frequencies. Use Value: 0.2µs break-before-make interval prevents visible glitches during source switching in HUD overlay rendering. |
Use Scenario: Reconfiguring test instrument signal paths (e.g., oscilloscope front-end, function generator output stage). IC Role / Device Role / Timing Role: Bidirectional analog switch allowing both input and output signal routing via same pins. Use Value: TTL/CMOS compatibility enables direct FPGA control without interface logic, reducing board space and BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX339CPE+ | Wider supply range (±3V to ±20V), lower on-resistance (100Ω typ), but only 4-channel single-ended topology. | Not differential - requires external instrumentation amplifiers for common-mode rejection. | Select MAX339CPE+ when single-ended routing suffices and lower RDS(ON) is prioritized over differential integrity. |
| ADG509AKRZ | Same 4-channel differential architecture, but higher on-resistance (450Ω typ) and wider SOIC-16 (5.3mm) package. | Compatible pinout but larger footprint; leakage (±100nA) is double that of DG509ADY-T. | Select ADG509AKRZ when sourcing from Analog Devices' qualified supply chain is required and minor leakage increase is acceptable. |
Compared with MAX339CPE+ and ADG509AKRZ, the DG509ADY-T uniquely balances differential channel integrity, industrial temperature rating, narrow SOIC packaging, and sub-50nA leakage-making it optimal for space-constrained, high-precision, and safety-critical analog routing where common-mode noise immunity is mandatory.
Availability
DG509ADY-T is available at Aetrix Electronics and suitable for data-acquisition systems, aircraft heads-up displays, and industrial control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG509ADY-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, automotive, and communications applications.
The DG509ADY-T belongs to Maxim's legacy analog multiplexer product line, engineered specifically for reliable, latchup-immune signal routing in harsh, high-voltage, and mission-critical environments.
FAQ
What is the operating temperature range for the DG509ADY-T?
The DG509ADY-T is rated for operation from −40°C to +85°C, making it suitable for industrial and avionics applications where ambient conditions exceed commercial-grade limits. This range is confirmed in the ordering information table and applies specifically to the DG509ADY-T narrow SOIC variant-not the DIP or QFN versions. All electrical specifications in the datasheet are guaranteed across this full range unless otherwise noted.
Does the DG509ADY-T support single-supply operation?
No, the DG509ADY-T requires dual symmetric supplies (e.g., ±5V, ±12V, or ±15V) and does not support true single-supply operation. The minimum recommended dual supply is ±9V per the datasheet note; operation below ±9V may degrade on-resistance and leakage performance. For single-supply designs, consider Maxim's MAX338/MAX339 family instead.
Is the DG509ADY-T pin-compatible with the industry-standard DG509A?
Yes, the DG509ADY-T is a plug-in upgrade for the DG509A, sharing identical pinout, function mapping, and package outline (16-pin narrow SOIC). It improves upon the original with lower on-resistance, faster enable timing, and significantly reduced leakage-without requiring PCB layout changes or firmware updates.
What is the maximum analog signal voltage the DG509ADY-T can handle?
The DG509ADY-T supports analog signals from V− to V+, with absolute maximum ratings of −2V to (V+ + 2V) on any analog terminal. At ±15V supplies, the usable analog range is ±15V; exceeding this risks clamping by internal diodes and potential damage if forward current exceeds 20mA. The guaranteed linear range remains ±15V under normal operation.
How does the break-before-make feature work in the DG509ADY-T?
The DG509ADY-T hardware-enforces a minimum 0.2µs interval between turn-off of the previously selected channel and turn-on of the newly addressed channel. This prevents momentary shorting between differential signal paths during address transitions-critical for avoiding transients in sensitive measurement or feedback loops. Timing is independent of external control speed and guaranteed across temperature and supply voltage.
DG509ADY-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 450Ohm
- Channel-to-Channel Matching (ΔRon):
- 27Ohm
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 1.5µs, 1µs
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG509ADY-T FAQ
1.How can I place an order for DG509ADY-T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG509ADY-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 DG509ADY-T reliable?
The price and inventory of DG509ADY-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG509ADY-T is usually 5 days.
3.What payment methods are accepted for DG509ADY-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG509ADY-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG509ADY-T?
DG509ADY-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG509ADY-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 DG509ADY-T?
For technical support, including DG509ADY-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG509ADY-T requirements.
6.How does Aetrix verify that DG509ADY-T is sourced from the original manufacturer or authorized distributors?
All DG509ADY-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 DG509ADY-T meets industry standards.
7.What is the process for return or replacement of DG509ADY-T?
All DG509ADY-T units undergo pre-shipment inspection (PSI). If there is an issue with DG509ADY-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 DG509ADY-T part is unused and in its original packaging.
Return procedure for DG509ADY-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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