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Analog Devices Inc./Maxim Integrated DG419CY
- Part No.:
- DG419CY
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG419CY.pdf
- Description:
- IC SWITCH SPDT X 1 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,094
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Product details
Overview
DG419CY from Maxim Integrated is a precision SPDT analog switch with normally closed (S1) and normally open (S2) channels, 35Ω max on-resistance, <5nA off-leakage at +85°C, and rail-to-rail signal handling up to ±20V bipolar or +30V single supply - used in audio routing, test equipment, and battery-operated systems requiring low charge injection (10pC max) and guaranteed 3Ω on-resistance matching.
For engineers reviewing the DG419CY datasheet, DG419CY pinout, DG419CY application, or DG419CY equivalent, this page delivers verified electrical specs, truth-table-validated switching behavior, thermal leakage performance, ESD tolerance (2000V), and real-world design context for analog signal path selection in precision instrumentation and communications hardware.
Technical Context
The DG419CY implements a CMOS transmission-gate architecture with silicon-gate 44V process technology, enabling operation across ±4.5V to ±20V bipolar or +10V to +30V single supplies. Its logic interface accepts TTL/CMOS levels via VL pin, and internal clamping diodes protect S/D terminals against overvoltage beyond V+/V−.
Switching is controlled by a single digital input (IN) that toggles between NC (S1 closed, S2 open) and NO (S1 open, S2 closed) states with break-before-make timing (13ns typ). On-resistance flatness (4Ω max) and channel-to-channel match (3Ω max) are guaranteed only under bipolar-supply conditions per datasheet Note 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPDT with one normally closed (S1) and one normally open (S2) channel |
| RDS(ON) Max | 35Ω - ensures minimal signal attenuation and distortion in audio and precision analog paths |
| ΔRDS(ON) Max | 3Ω - guarantees matched gain/attenuation across S1 and S2 paths for differential or dual-path applications |
| tON/tOFF Max | 175ns / 145ns - supports high-speed multiplexing in data acquisition and modems |
| Charge Injection | 10pC max - minimizes voltage glitch in sample-and-hold circuits and ADC front-ends |
| IOFF @ +85°C | <5nA - enables stable DC coupling and low-drift performance in battery-powered guidance systems |
| ESD Tolerance | 2000V min (HBM, Method 3015.7) - reduces need for external protection in field-deployed test gear |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit) - surface-mount, JEDEC MS-012AC compliant, 1.27mm pitch, 5.0mm × 4.0mm body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (D) | Drain (common analog terminal) | Shared signal path connected to both S1 and S2; must be routed with controlled impedance in RF/audio apps |
| 2 (S1) | Source 1 (normally closed) | Conducts to D when IN = 0; used for default-path routing without logic assertion |
| 3 (GND) | Logic ground reference | Reference for VL and digital inputs; separate from analog V− but tied internally in most layouts |
| 4 (V+) | Analog positive supply | Bipolar: connects to +15V; single-supply: connects to +12V–+30V; must be decoupled near pin |
| 5 (VL) | Logic supply input | Set to +5V for TTL compatibility or tied to V+ for CMOS-level control; defines logic threshold |
| 6 (IN) | Digital control input | Active-high logic input; toggles S1/S2 state; compatible with 3.3V/5V microcontrollers |
| 7 (V−) | Analog negative supply | Bipolar: connects to −15V; single-supply: tied to GND; determines lower analog signal limit |
| 8 (S2) | Source 2 (normally open) | Conducts to D only when IN = 1; enables active-selection routing in PBX and modem signal paths |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal range | Supports full-swing signals from V− to V+ - essential for ±12V op-amp interfaces and unipolar sensor outputs |
| Guaranteed RFLAT(ON) | 4Ω max variation across entire analog range - preserves linearity in precision measurement front-ends |
| Low power consumption | 35µW max - extends battery life in portable fax machines and handheld test equipment |
| TTL/CMOS logic compatibility | Accepts standard 0.8V/2.4V thresholds with VL = 5V - eliminates level-shifter requirements in mixed-voltage systems |
| Break-before-make timing | 13ns typical - prevents momentary shorting between S1 and S2 during state transition in audio crosspoints |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
|
Use Scenario: Switching microphone and line-level audio signals between multiple codec channels in military radios and PBX systems. IC Role / Device Role / Timing Role: SPDT analog switch providing low-distortion, low-crosstalk (85dB) signal path selection with sub-200ns settling. Use Value: 10pC charge injection prevents audible pop/click during hot switching; 35Ω RDS(ON) avoids gain error in 600Ω audio lines. |
Use Scenario: Channel selection in automated test equipment (ATE) scanning multiple DUTs into shared measurement circuitry. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential sampling of sensor outputs or power supply rails. Use Value: <5nA off-leakage at +85°C maintains accuracy in high-impedance probe circuits; 4Ω RFLAT(ON) ensures consistent reading across full signal range. |
| Sample-and-Hold Circuits | Battery-Operated Modems |
|
Use Scenario: Sampling analog sensor outputs (e.g., temperature, pressure) before digitization in industrial guidance systems. IC Role / Device Role / Timing Role: Low-glitch switch isolating hold capacitor from input during acquisition phase. Use Value: 10pC max charge injection limits voltage step on 1nF hold capacitors to <10mV - meeting 12-bit ADC accuracy requirements. |
Use Scenario: Signal path management in portable fax machines and dial-up modems operating from 9V batteries. IC Role / Device Role / Timing Role: Low-power analog switch routing line signals, ring detection, and codec interfaces. Use Value: 35µW max power draw minimizes quiescent current; ±15V capability supports legacy telecom signaling standards without level translation. |
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 | Lower RDS(ON) (1.3Ω), higher supply voltage limit (+33V), but requires ≥3V logic supply and has no guaranteed RDS(ON) match spec | Better for high-precision, low-voltage systems; unsuitable where 3Ω match or 2000V ESD is mandatory | Select ADG1419BRMZ only if ultra-low on-resistance outweighs ESD and matching requirements |
| TS5A23157DCUR | Single-supply only (1.65V–5.5V), much lower RDS(ON) (0.9Ω), but limited to 5.5V analog range and lacks bipolar operation | Optimized for 3.3V/5V portable electronics; cannot replace DG419CY in ±15V test gear or audio line drivers | Choose TS5A23157DCUR for cost-sensitive, low-voltage consumer designs - not for industrial or telecom use |
Compared with ADG1419BRMZ and TS5A23157DCUR, the DG419CY uniquely combines bipolar ±20V operation, guaranteed 3Ω channel matching, 2000V ESD rating, and validated performance across −40°C to +85°C - making it irreplaceable in ruggedized test equipment and military-grade comms hardware where supply flexibility and parameter consistency are non-negotiable.
Availability
DG419CY is available at Aetrix Electronics and suitable for audio signal routing, test equipment multiplexing, and battery-operated modems requiring stable component supply, long-term lifecycle support, and traceable sourcing from original manufacturer stock.
Supply support for DG419CY 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 DG419CY belongs to Maxim's precision analog switch family engineered for low-leakage, low-distortion signal routing in demanding environments - emphasizing parameter guarantee, ESD robustness, and wide supply flexibility.
FAQ
What is the maximum analog signal range supported by the DG419CY?
The DG419CY supports rail-to-rail analog signals from V− to V+. With bipolar supplies, this is ±4.5V to ±20V; with single supply, it is 0V to +10V to +30V. At ±15V, the full range is −15V to +15V - confirmed in Electrical Characteristics tables and Figure DG417-01 through DG417-04. The DG419CY maintains specified RDS(ON) and leakage performance across this entire span.
Does the DG419CY require external pull-up or pull-down resistors on its IN pin?
No, the DG419CY does not require external biasing on the IN pin. Its logic input is fully compatible with TTL and CMOS levels when VL = 5V, accepting 0.8V (max) for logic low and 2.4V (min) for logic high - as specified in the Electrical Characteristics table. The DG419CY's input leakage is ±0.5µA max, eliminating need for external resistors in standard microcontroller interfacing.
Can the DG419CY operate with unbalanced supplies like +24V and −5V?
Yes, the DG419CY supports unbalanced supplies per Applications Information section: "all device types can operate with unbalanced supplies, such as +24V and −5V." The absolute maximum rating requires V+ − V− ≤ 44V, and analog range becomes V− to V+, so +24V/−5V yields −5V to +24V swing - usable in custom power architectures. The DG419CY's internal structure tolerates this asymmetry without performance degradation.
What is the guaranteed on-resistance matching specification for the DG419CY?
The DG419CY guarantees ΔRDS(ON) ≤ 3Ω between its S1 and S2 channels under bipolar-supply operation - explicitly stated in the New Features list and Electrical Characteristics table. This match is tested and guaranteed over temperature (−40°C to +85°C) and across the full analog signal range, distinguishing it from earlier DG419 variants and enabling precision differential switching in metrology applications.
Is the DG419CY pin-compatible with older DG419 variants like DG419CJ?
Yes, the DG419CY is pin-compatible with DG419CJ, DG419DJ, and DG419DK - all share identical 8-pin SOIC (DG419CY) or PDIP (DG419CJ) footprints and identical pin functions per Pin Description table. The DG419CY replaces earlier versions with improved RDS(ON) match, flatter on-resistance, and tighter leakage specs, allowing drop-in upgrades without PCB changes.
DG419CY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for DG419CY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG419CY 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 reliable?
The price and inventory of DG419CY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG419CY is usually 5 days.
3.What payment methods are accepted for DG419CY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG419CY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG419CY?
DG419CY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG419CY 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?
For technical support, including DG419CY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG419CY requirements.
6.How does Aetrix verify that DG419CY is sourced from the original manufacturer or authorized distributors?
All DG419CY 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 meets industry standards.
7.What is the process for return or replacement of DG419CY?
All DG419CY units undergo pre-shipment inspection (PSI). If there is an issue with DG419CY, 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 part is unused and in its original packaging.
Return procedure for DG419CY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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