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Analog Devices Inc./Maxim Integrated DG419CY+T
- Part No.:
- DG419CY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG419CY+T.pdf
- Description:
- IC SWITCH SPDT X 1 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,400
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Product details
Overview
DG419CY+T from Maxim Integrated is a precision SPDT analog switch with guaranteed 3Ω max on-resistance matching between channels, 4Ω max on-resistance flatness over signal range, and <5nA off-leakage at +85°C. It operates from ±4.5V to ±20V or +10V to +30V supplies, supports rail-to-rail analog signals, and delivers <175ns tON / <145ns tOFF for high-speed signal routing in test equipment and communications systems.
For engineers reviewing the DG419CY+T datasheet, DG419CY+T pinout, DG419CY+T application, or DG419CY+T equivalent, key selection criteria include bipolar/single-supply flexibility, low charge injection (10pC max), ESD tolerance (2000V min), and guaranteed channel matching - all critical for precision sample-and-hold, audio routing, and battery-operated instrumentation.
Technical Context
The DG419CY+T implements a CMOS transmission-gate architecture with silicon-gate 44V process technology, enabling robust operation across ±4.5V–±20V and +10V–+30V supply ranges. Its SPDT configuration integrates one normally closed (S1) and one normally open (S2) switch path controlled by a single TTL/CMOS-compatible logic input (IN).
Guaranteed performance includes matched RDS(ON) ≤3Ω between S1 and S2 channels and RFLAT(ON) ≤4Ω over full analog range - both specified only under bipolar-supply conditions. Charge injection is limited to 10pC max, and off-isolation rejection ratio reaches 68dB at 1MHz, supporting low-distortion signal switching in sensitive analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(ON) max | 35Ω - Ensures minimal signal attenuation and voltage drop across switch paths at full analog range. |
| ∆RDS(ON) match | 3Ω max - Guarantees consistent gain/attenuation when routing differential or dual-path signals. |
| RFLAT(ON) max | 4Ω max - Maintains linear signal transfer without harmonic distortion across ±15.5V analog range. |
| tON / tOFF max | 175ns / 145ns - Enables reliable switching in sub-10MHz sampling and multiplexing applications. |
| Charge injection | 10pC max - Limits voltage glitch on hold capacitors in precision sample-and-hold circuits. |
| ID(OFF) at +85°C | <5nA - Preserves accuracy in high-impedance sensor interfaces and long-integration-time systems. |
| ESD tolerance | 2000V min (HBM) - Supports handling and assembly in standard manufacturing environments without special precautions. |
| Analog range | ±15.5V (bipolar), 0–12V (single-supply) - Allows direct interfacing with industrial ±10V and automotive 0–12V signal domains. |
Pinout & Package
DG419CY+T is supplied in an 8-pin SOIC package (SO) with 1.27mm pitch, JEDEC MS-012AC compliant, and rated for 0°C to +70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S1 (Source 1) | Normally closed analog terminal - connects to D when IN = 0, ideal for default-path signal routing. |
| 2 | S2 (Source 2) | Normally open analog terminal - connects to D when IN = 1, enables active selection of alternate signal path. |
| 3 | GND | Logic ground reference - must be tied to system digital ground; not shared with analog return unless decoupled. |
| 4 | V+ | Positive analog supply - sets upper rail for analog signal range; supports up to +30V (single) or +20V (bipolar). |
| 5 | VL | Logic supply input - set to +5V for TTL compatibility or tied to V+ for CMOS-level logic thresholds. |
| 6 | IN | Digital control input - accepts 0.8V/2.4V logic thresholds; inverts function relative to DG417/DG418 due to SPDT topology. |
| 7 | V− | Negative analog supply - sets lower rail; supports down to −20V (bipolar); connect to 0V for single-supply mode. |
| 8 | D | Common drain terminal - bidirectional I/O node shared by both S1 and S2 switches; handles rail-to-rail signals. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed channel matching | 3Ω max RDS(ON) difference between S1 and S2 - eliminates gain mismatch in dual-channel calibration paths. |
| Rail-to-rail signal handling | Full analog swing from V− to V+ - enables direct connection to op-amp outputs and DACs without level-shifting. |
| TTL/CMOS logic compatibility | 0.8V/2.4V input thresholds with VL pin configurable - simplifies interface to microcontrollers and FPGAs. |
| Low power consumption | 35µW max total supply current - extends battery life in portable test gear and handheld instruments. |
| Bipolar & single-supply operation | ±4.5V–±20V or +10V–+30V - reduces BOM count by supporting both industrial and automotive supply architectures. |
| Break-before-make timing | 5ns–13ns interval - prevents momentary short-circuit between S1 and S2 during state transitions. |
Applications
| Sample-and-Hold Circuits | Communications Systems |
|---|---|
Use Scenario: Capturing precise voltage levels from sensor outputs or RF demodulators before ADC conversion. IC Role / Device Role / Timing Role: SPDT switch selects between acquisition and hold phases while minimizing charge injection-induced error. Use Value: 10pC max charge injection and <5nA leakage at +85°C preserve hold capacitor voltage integrity over extended intervals. |
Use Scenario: Routing analog voice or data signals between line cards, codecs, and hybrid circuits in PBX/PABX infrastructure. IC Role / Device Role / Timing Role: Bidirectional SPDT path selector with rail-to-rail support for ±10V telephony signaling standards. Use Value: 35Ω RDS(ON) and 68dB off-isolation prevent crosstalk and signal degradation across multiple concurrent channels. |
| Test Equipment | Audio Signal Routing |
Use Scenario: Multiplexing inputs to benchtop DMMs, oscilloscopes, or automated test systems requiring low thermal EMF and stable RDS(ON). IC Role / Device Role / Timing Role: Precision analog switch matrix element with guaranteed 3Ω channel matching for calibrated measurement paths. Use Value: Matched on-resistance ensures consistent gain scaling across multiple instrument channels without per-path trimming. |
Use Scenario: Selecting between microphone preamps, line inputs, or DAC outputs in professional audio mixers and effects processors. IC Role / Device Role / Timing Role: Low-distortion, low-noise analog signal router with <4Ω RFLAT(ON) to preserve wideband frequency response. Use Value: Flat on-resistance across ±15.5V range maintains THD+N performance below 0.01% in 20Hz–20kHz audio band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRMZ | Higher RDS(ON) (4.7Ω typ), wider supply range (±15V to ±22V), 100MHz bandwidth vs. DG419CY+T's DC–10MHz effective range. | Better suited for high-frequency RF switching; less optimal for precision DC-coupled sample-and-hold due to higher on-resistance drift. | Select ADG1419BRMZ when bandwidth >10MHz or supply >±20V is required; DG419CY+T preferred for cost-sensitive, low-leakage, matched-channel DC applications. |
| TS5A23157DCUR | Lower voltage rating (5.5V max), smaller 6-pin SC70 package, 0.9Ω RDS(ON) but no guaranteed matching or flatness specs. | Targeted at low-voltage portable audio and USB-C accessory switching; lacks bipolar supply support and high-temp leakage guarantees. | Choose TS5A23157DCUR for space-constrained 3.3V systems; DG419CY+T remains appropriate for industrial ±15V, high-accuracy, temperature-stable designs. |
Compared with ADG1419BRMZ and TS5A23157DCUR, DG419CY+T uniquely combines guaranteed 3Ω channel matching, <5nA leakage at +85°C, and ±20V bipolar operation - making it the only option among the three qualified for precision DC-coupled instrumentation where channel consistency and thermal stability are mandatory.
Availability
DG419CY+T is available at Aetrix Electronics and suitable for test equipment, communications infrastructure, and battery-operated instrumentation requiring stable component supply, long-lifecycle availability, and guaranteed parametric performance across commercial temperature range.
Supply support for DG419CY+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The DG419CY+T belongs to Maxim's legacy precision analog switch family, designed specifically for applications demanding low leakage, matched on-resistance, and robust bipolar supply operation in measurement and signal conditioning systems.
FAQ
What supply voltage ranges does the DG419CY+T support?
The DG419CY+T operates from ±4.5V to ±20V bipolar supplies or +10V to +30V single supplies. When using single-supply mode, V− must be connected to ground. The device's 44V silicon-gate process ensures safe operation within these ranges, with absolute maximum ratings of +44V on V+ and −20V on V−. DG419CY+T maintains guaranteed RDS(ON) matching and flatness only under bipolar-supply conditions.
Does the DG419CY+T have break-before-make functionality?
Yes, the DG419CY+T features a guaranteed break-before-make interval of 5ns to 13ns, preventing momentary short-circuiting between S1 and S2 during logic transitions. This timing is measured under RL = 1000Ω, CL = 35pF conditions and ensures clean signal path isolation in multiplexer and routing applications. DG419CY+T does not implement make-before-break behavior.
What is the maximum allowable analog signal range for DG419CY+T?
Under ±16.5V/−16.5V supplies, the DG419CY+T supports an analog signal range of ±15.5V. In single-supply mode with V+ = +12V and V− = 0V, the usable range is 0V to +12V. The device supports rail-to-rail signal handling, meaning input signals may extend to within ~1V of the supply rails without clipping or increased distortion. DG419CY+T's RFLAT(ON) specification applies only across the full specified analog range.
How does the DG419CY+T handle logic-level compatibility?
The DG419CY+T accepts TTL- or CMOS-compatible logic inputs via its VL pin: tie VL to +5V for TTL thresholds (0.8V low / 2.4V high), or to V+ for CMOS thresholds (~30% and ~70% of V+). Input leakage is <0.5µA across temperature, ensuring reliable drive from microcontrollers and logic families. DG419CY+T's IN pin controls both S1 and S2 simultaneously with inverted truth table relative to DG417/DG418.
Is the DG419CY+T suitable for high-temperature industrial applications?
The DG419CY+T is rated for 0°C to +70°C operation (Commercial grade). For extended temperature use, consider DG419DJ or DG419DY variants rated from −40°C to +85°C. While DG419CY+T exhibits <5nA off-leakage at +85°C in characterization, its guaranteed specifications - including RDS(ON) matching and flatness - apply only within its rated 0°C to +70°C range. DG419CY+T is not recommended for continuous operation above +70°C in production systems.
DG419CY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 3Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 175ns, 145ns
- -3db Bandwidth:
- -
- Charge Injection:
- 3pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DG419CY+T FAQ
1.How can I place an order for DG419CY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG419CY+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 DG419CY+T reliable?
The price and inventory of DG419CY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG419CY+T is usually 5 days.
3.What payment methods are accepted for DG419CY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG419CY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG419CY+T?
DG419CY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG419CY+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 DG419CY+T?
For technical support, including DG419CY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG419CY+T requirements.
6.How does Aetrix verify that DG419CY+T is sourced from the original manufacturer or authorized distributors?
All DG419CY+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 DG419CY+T meets industry standards.
7.What is the process for return or replacement of DG419CY+T?
All DG419CY+T units undergo pre-shipment inspection (PSI). If there is an issue with DG419CY+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 DG419CY+T part is unused and in its original packaging.
Return procedure for DG419CY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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