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Renesas DG409DY-T
- Part No.:
- DG409DY-T
- Manufacturer:
- Renesas
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG409DY-T.pdf
- Description:
- IC SWITCH SP4T X 2 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,743
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Product details
Overview
DG409DY-T from Renesas Electronics is a differential 4-channel CMOS analog multiplexer with bilateral switching, 100Ω max ON resistance at 25°C, <250ns transition time, and ±15V analog signal range under ±15V dual supply. It serves as a drop-in upgrade for DG509A in data acquisition and audio routing systems requiring low charge injection and TTL/CMOS-compatible control.
For engineers reviewing the DG409DY-T datasheet, DG409DY-T pinout, DG409DY-T application, or DG409DY-T equivalent, key selection criteria include its differential channel architecture, SOIC-16 package compatibility, -40°C to +85°C operating range, and support for single (up to +34V) or split (±5V to ±20V) supplies without external level shifting.
Technical Context
The DG409DY-T implements a fully decoded 2-bit address logic (A1/A0) with enable (EN) input to select one of four differential pairs (S1A/S1B through S4A/S4B), each routed to dedicated drains DA and DB. Its silicon-gate CMOS process eliminates latch-up and enables rail-to-rail analog operation across the full specified supply range.
Unlike the DG408, the DG409DY-T features separate source/drain terminals for true differential signal handling - no shared drain node - and exhibits lower OFF capacitance (14pF typical at drain) and reduced crosstalk due to optimized internal layout and epitaxial isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON Resistance (max) | 100Ω at 25°C - ensures minimal signal attenuation and gain error in precision analog paths |
| Transition Time (tTRANS) | <250ns - supports multiplexing rates up to ~2MHz in high-speed data acquisition |
| Analog Signal Range | ±15V (dual supply) or 0–12V (single supply) - accommodates industrial sensor outputs and audio line-level signals |
| Charge Injection | 20pC max (CL = 10nF) - reduces hold-step error in sample-and-hold circuits without additional correction |
| OFF Isolation | -75dB at 100kHz - prevents signal bleed between inactive channels in sensitive measurement systems |
| Supply Range | Single: +5V to +34V; Split: ±5V to ±20V - enables direct interface with legacy ±15V op-amp rails or modern 12V/24V industrial buses |
| Logic Compatibility | TTL/CMOS - accepts standard microcontroller GPIO without level-shifting circuitry |
Pinout & Package
Package: 16-lead SOIC (M16.15), 3.90–4.00 mm width, 9.80–10.00 mm length, 1.35–1.75 mm height, RoHS-compliant matte tin termination.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | Address LSB input | Selects differential pair 1/2 (A0=0) or 3/4 (A0=1) when A1 is asserted |
| 2 (EN) | Active-high enable | Disables all switches when low; required for multi-mux synchronization |
| 3 (V−) | Negative supply rail | Bias reference for analog channel conduction; must be ≤ V+ − 44V |
| 4 (S1A) | Channel 1 positive source | Input terminal for first differential pair; matched to S1B for common-mode rejection |
| 5 (S2A) | Channel 2 positive source | Second differential input; shares same ON-resistance tracking as S1A–S4A |
| 6 (S3A) | Channel 3 positive source | Third differential input; pinout symmetry simplifies PCB routing of balanced traces |
| 7 (S4A) | Channel 4 positive source | Fourth differential input; adjacent to DA for minimized parasitic coupling |
| 8 (DA) | Positive output drain | Common output node for all SxA sources; requires external buffering if driving low-Z loads |
| 9 (DB) | Negative output drain | Complementary output node for all SxB sources; maintains differential integrity at output stage |
| 10 (S4B) | Channel 4 negative source | Paired with S4A; matched offset and gain drift critical for instrumentation amplifier front-ends |
| 11 (S3B) | Channel 3 negative source | Paired with S3A; identical thermal coefficient to S3A ensures stable CMRR over temperature |
| 12 (S2B) | Channel 2 negative source | Paired with S2A; layout symmetry minimizes inter-pair crosstalk below -75dB |
| 13 (S1B) | Channel 1 negative source | Paired with S1A; referenced to GND for logic interface while maintaining analog isolation |
| 14 (V+) | Positive supply rail | Substrate bias connection; must remain ≥ V− + 5V for guaranteed operation |
| 15 (GND) | Logic ground reference | Return path for digital inputs only; separate from analog signal ground in mixed-signal layouts |
| 16 (A1) | Address MSB input | Combines with A0 to select one of four differential channels (00→CH1, 11→CH4) |
Key Features
| Feature | Design Value |
|---|---|
| Bilateral analog switching | Enables bidirectional AC/DC signal routing without polarity constraints - essential for sensor excitation and feedback loops |
| Low ON-resistance variation | ≤15Ω matching between channels - preserves amplitude accuracy across multiplexed thermocouple or strain gauge inputs |
| Split or single supply operation | Eliminates need for external DC-DC converters in battery-powered or legacy industrial systems |
| Latch-up immunity | Epitaxial layer prevents destructive current paths during overvoltage transients - meets IEC 61000-4-5 surge robustness |
| Pb-free + anneal packaging | RoHS-compliant matte tin finish compatible with both SnPb and Pb-free reflow profiles - supports dual-legacy manufacturing |
Applications
| Data Acquisition Systems | Audio Switching Systems |
|---|---|
Use Scenario: Multiplexing 16 thermocouples into a single 24-bit sigma-delta ADC with cold-junction compensation. IC Role / Device Role / Timing Role: Differential analog multiplexer selecting matched sensor pairs while rejecting common-mode noise from motor drives. Use Value: 14pF drain OFF capacitance minimizes settling time errors; ±15V range accommodates K-type thermocouple outputs without amplification. | Use Scenario: Routing stereo line-level signals between multiple sources (DAC, Bluetooth module, phono preamp) and active crossover networks. IC Role / Device Role / Timing Role: Bidirectional differential switch preserving phase coherence and minimizing crosstalk between left/right channels. Use Value: -75dB OFF isolation at 10kHz prevents audible leakage; low charge injection avoids pop/click artifacts during real-time switching. |
| Automatic Test Equipment | Sample and Hold Circuits |
Use Scenario: Configuring DUT signal paths for parametric testing of op-amps, comparators, and voltage references. IC Role / Device Role / Timing Role: Precision analog switch matrix enabling programmable gain, offset, and feedback configurations. Use Value: 100Ω ON resistance ensures predictable gain error in feedback loops; fast tTRANS allows >1k samples/sec per channel. | Use Scenario: Capturing transient waveforms from RF detectors or pulse-width modulated motor currents. IC Role / Device Role / Timing Role: Low-charge-injection analog gate controlling hold capacitor charging with sub-100ps aperture jitter. Use Value: 20pC max charge injection limits hold-step error to <0.5mV on 10nF capacitors - sufficient for 12-bit resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Single-supply only (2.7V–12V); 60Ω ON resistance; 16-pin SOIC but different pinout (no differential outputs) | Suitable for low-voltage portable instruments but cannot replace DG409DY-T in ±15V systems or differential output topologies | Select MAX4617ESE+ only when operating from 3.3V/5V rails and using single-ended output architecture |
| ADG409BRUZ | Identical differential 4-channel function; 100Ω ON resistance; TSSOP-16 package; RoHS-compliant | Same functional behavior but requires PCB redesign due to 4.4mm × 5mm TSSOP vs 3.9mm × 10mm SOIC footprint | ADG409BRUZ is a functional alternative with identical specs but incompatible mechanical fit - verify land pattern before substitution |
Compared with MAX4617ESE+ and ADG409BRUZ, the DG409DY-T uniquely supports bipolar supplies up to ±20V while retaining SOIC-16 compatibility and differential output pins - making it irreplaceable in legacy test equipment and industrial PLC analog I/O modules.
Availability
DG409DY-T is available at Aetrix Electronics and suitable for data acquisition systems, audio routing infrastructure, automatic test equipment, and sample-and-hold circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG409DY-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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and enterprise applications.
The DG409DY-T belongs to Renesas' legacy analog switch portfolio designed specifically for high-reliability industrial signal routing - emphasizing latch-up immunity, wide supply flexibility, and drop-in replacement capability for aging military-grade multiplexers.
FAQ
What is the maximum allowable supply voltage difference for DG409DY-T?
The DG409DY-T supports a maximum V+ to V− differential of 44V, as specified in Absolute Maximum Ratings. This allows operation from ±20V split supplies (40V total) or +34V single supply relative to V− = 0V. Exceeding 44V risks permanent damage, even momentarily, due to internal junction breakdown - always verify actual rail separation under worst-case load and transient conditions before deployment.
Does DG409DY-T require external pull-up resistors on address lines A0 and A1?
No, DG409DY-T does not require external pull-up resistors on A0 or A1. Its TTL/CMOS-compatible inputs have defined thresholds (VAL ≤ 0.8V, VAH ≥ 2.4V) and draw less than ±10μA over full temperature range, enabling direct connection to microcontroller GPIOs or FPGA outputs without additional biasing - reducing BOM count and board space in compact designs.
Can DG409DY-T be used with a single +5V supply?
Yes, DG409DY-T operates from a single +5V supply (V+ = +5V, V− = 0V), supporting analog signals from 0V to 12V per Electrical Specifications. However, ON resistance increases to ~90Ω typical at +5V, and analog range is limited to 0–12V - verify signal headroom and channel matching requirements against your specific application's precision needs before finalizing the supply configuration.
What is the thermal resistance (θJA) of DG409DY-T in SOIC package?
The DG409DY-T in SOIC package has a typical junction-to-ambient thermal resistance (θJA) of 110°C/W, measured on an evaluation PCB in free air. At maximum continuous power dissipation (<11mW), this results in <1.2°C junction rise above ambient - well within safe operating limits. For high-density layouts or elevated ambient temperatures, confirm PCB copper area and airflow meet derating curves shown in Figure 20 of the datasheet.
Is DG409DY-T pin-compatible with DG509A?
Yes, DG409DY-T is a drop-in replacement for DG509A in SOIC-16 packages, sharing identical pinout, supply voltage ranges, logic thresholds, and functional behavior. Key improvements - including lower ON resistance (<100Ω vs. 125Ω), faster switching (<250ns vs. 350ns), and reduced charge injection - require no PCB changes but deliver measurable performance gains in precision analog systems.
DG409DY-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 15Ohm (Max)
- Voltage - Supply, Single (V+):
- 5V ~ 34V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 20pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 14pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG409DY-T FAQ
1.How can I place an order for DG409DY-T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG409DY-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 DG409DY-T reliable?
The price and inventory of DG409DY-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG409DY-T is usually 5 days.
3.What payment methods are accepted for DG409DY-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG409DY-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG409DY-T?
DG409DY-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG409DY-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 DG409DY-T?
For technical support, including DG409DY-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG409DY-T requirements.
6.How does Aetrix verify that DG409DY-T is sourced from the original manufacturer or authorized distributors?
All DG409DY-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 DG409DY-T meets industry standards.
7.What is the process for return or replacement of DG409DY-T?
All DG409DY-T units undergo pre-shipment inspection (PSI). If there is an issue with DG409DY-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 DG409DY-T part is unused and in its original packaging.
Return procedure for DG409DY-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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