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Analog Devices Inc./Maxim Integrated DG508ACWE+T
- Part No.:
- DG508ACWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
DG508ACWE+T.pdf
- Description:
- IC MUX 8:1 450OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,811
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Product details
Overview
DG508ACWE+T from Maxim Integrated is a monolithic CMOS 8-channel single-ended analog multiplexer with break-before-make switching, ±4.5V to ±18V dual-supply operation, 400Ω typical on-resistance at ±15V, 0.5nA max off-leakage at +25°C, and TTL/CMOS-compatible logic inputs - used for precision signal routing in data-acquisition systems requiring rail-to-rail analog signal handling.
For engineers reviewing the DG508ACWE+T datasheet, DG508ACWE+T pinout, DG508ACWE+T application, or DG508ACWE+T equivalent, key selection criteria include guaranteed latchup immunity with powered-off supplies, symmetrical bidirectional analog path performance, low standby supply current (0.02mA), and wide-temperature compatibility across industrial control and avionics interfaces.
Technical Context
The DG508ACWE+T implements a fully decoded 3-bit address logic (A0–A2) driving eight independent analog switches, each featuring matched RDS(ON) and <±6% channel-to-channel on-resistance variation. Its enable-controlled architecture ensures all channels remain open-circuit when EN = low, with 0.2μs break-before-make interval preventing signal shorting during channel transitions.
Designed for dual-supply analog signal conditioning, the device supports continuous operation across ±4.5V to ±18V, with analog input range extending to ±15V and internal clamp diodes protecting S/D terminals against overvoltage beyond rails. Logic inputs tolerate voltages up to V+ + 2V and draw ≤10μA at 2.4V high-level input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V - supports full-rail analog signals without clipping in ±15V systems |
| Drain-Source On-Resistance | 400Ω typ at ±15V - enables low-insertion-loss signal routing for 10kΩ+ source/load impedances |
| Break-Before-Make Interval | 0.2μs - prevents momentary shorting between channels during address changes |
| Off-Leakage Current | ±0.5nA max at +25°C - preserves accuracy in high-impedance sensor front-ends and sample-hold circuits |
| Enable Turn-On/Off Time | 0.4μs / 0.2μs - allows fast channel switching synchronized to digital control clocks |
| Supply Voltage Range | ±4.5V to ±18V - accommodates legacy ±12V, ±15V, and modern ±5V-derived bias rails |
| Logic Compatibility | TTL and CMOS - interfaces directly with microcontrollers, FPGAs, and discrete logic without level-shifting |
Pinout & Package
Package: 16-pin Wide SO (W16-2), RoHS-compliant, surface-mount, 7.5mm × 10.3mm body, 1.27mm pitch.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15, 16 | A0, A1, A2 | 3-bit binary address inputs selecting one of eight analog channels (S1–S8) |
| 2 | EN | Active-high enable controlling global switch activation/deactivation |
| 3 | V− | Negative supply rail connection; sets lower analog voltage limit and bias reference |
| 4–7 | S1–S4 | Bidirectional analog input/output terminals for channels 1–4 |
| 8 | D | Common analog output/input terminal shared by all eight channels |
| 9–12 | S8–S5 | Bidirectional analog input/output terminals for channels 5–8 (reversed order per package layout) |
| 13 | V+ | Positive supply rail connection; sets upper analog voltage limit and bias reference |
| 14 | GND | Digital ground reference for logic inputs and internal decode circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Latchup-proof construction | Guaranteed no latchup even when power supplies are turned off while analog signals remain present |
| Symmetrical bidirectional operation | Identical on-resistance and leakage behavior regardless of signal flow direction (S→D or D→S) |
| Low-power CMOS design | 0.02mA supply current in standby mode - extends battery life in portable data loggers |
| Plug-in upgrade for industry-standard DG508A | Pin- and function-compatible replacement with faster enable timing and lower leakage than legacy versions |
| Wide operating temperature range | 0°C to +70°C specified performance - suitable for commercial-grade instrumentation and control panels |
Applications
| Control Systems | Data-Acquisition Systems |
|---|---|
Use Scenario: Multiplexing sensor inputs (thermocouples, RTDs, strain gauges) into a single ADC channel in PLC I/O modules. IC Role / Device Role / Timing Role: Analog signal selector enabling sequential sampling of up to eight sensors under microcontroller address control. Use Value: Eliminates need for multiple ADCs while maintaining ±15V input tolerance and sub-nA leakage for high-resolution measurements. |
Use Scenario: Routing calibrated reference voltages and test signals to calibration DACs and front-end amplifiers in benchtop DMMs. IC Role / Device Role / Timing Role: Precision analog switch providing low-distortion, low-offset signal paths with guaranteed break-before-make timing. Use Value: Prevents reference shorting during reconfiguration, preserving measurement integrity and reducing calibration drift. |
| Aircraft Heads-Up Displays | Signal Routing |
Use Scenario: Selecting video sync pulses, brightness control signals, and symbol generator outputs in HUD display driver subsystems. IC Role / Device Role / Timing Role: High-reliability analog multiplexer handling mixed DC and low-frequency AC signals in safety-critical avionics. Use Value: Latchup immunity ensures continued operation during power sequencing events common in aircraft electrical systems. |
Use Scenario: Dynamically reconfiguring analog signal paths in modular test equipment (e.g., automated functional testers). IC Role / Device Role / Timing Role: Reconfigurable analog interconnect enabling flexible stimulus/response routing without hardware changes. Use Value: Enables software-defined instrument architectures with minimal analog path degradation (<400Ω RDS(ON), <5pF CS(OFF)). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX338ESE+ | Single-supply operation (4.5V to 20V), 350Ω RDS(ON), 100pA leakage, 16-pin SO | Optimized for battery-powered systems; lacks dual-supply flexibility and ±15V analog range | Select MAX338ESE+ when single-rail operation and ultra-low leakage outweigh dual-supply requirements |
| ADG508AKRZ-REEL7 | ±15V rating, 450Ω RDS(ON), 2nA leakage, 16-pin SO, ADI's improved latchup immunity | Higher leakage and slightly slower switching vs. DG508ACWE+T; identical pinout but different enable polarity | Choose ADG508AKRZ-REEL7 only if sourcing from ADI's qualified supply chain is mandatory for qualification-critical programs |
Compared with MAX338ESE+ and ADG508AKRZ-REEL7, the DG508ACWE+T uniquely balances wide dual-supply range, sub-nA leakage, and proven plug-in compatibility with legacy DG508A designs - making it optimal for industrial upgrades where analog rail flexibility and reliability are prioritized over single-supply convenience or alternate vendor qualification.
Availability
DG508ACWE+T is available at Aetrix Electronics and suitable for control systems, data-acquisition systems, and aircraft heads-up displays requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for DG508ACWE+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 power-management ICs for industrial, communications, and computing applications.
The DG508ACWE+T belongs to Maxim's legacy analog multiplexer product line, engineered specifically for high-reliability signal routing in environments demanding rail-to-rail analog performance, latchup immunity, and drop-in compatibility with industry-standard 8-channel mux footprints.
FAQ
What is the maximum analog signal voltage supported by the DG508ACWE+T?
The DG508ACWE+T supports analog signals from V− to V+, with absolute maximum ratings allowing input voltages up to −2V to (V+ + 2V). At ±15V supplies, its specified analog signal range is ±15V - meaning the DG508ACWE+T can pass full-rail signals without distortion or clipping when operated within its recommended supply range.
Does the DG508ACWE+T require external pull-up resistors on its logic inputs?
No, the DG508ACWE+T does not require external pull-up resistors. Its logic inputs (A0, A1, A2, and EN) are TTL- and CMOS-compatible, with input current ≤10μA at 2.4V high level and ≤30μA across temperature. The DG508ACWE+T operates reliably with direct connection to microcontroller GPIOs or FPGA outputs without additional biasing components.
Is the DG508ACWE+T pin-compatible with older DG508A variants in SO packages?
Yes, the DG508ACWE+T uses the same 16-pin Wide SO footprint (W16-2) as the original DG508A in SO packages and shares identical pin functions, address decoding, and enable behavior. The DG508ACWE+T is explicitly documented as a plug-in upgrade - requiring no PCB changes while delivering lower leakage, faster enable timing, and improved latchup immunity over legacy versions.
What is the typical on-resistance matching between channels of the DG508ACWE+T?
The DG508ACWE+T exhibits ≤6% variation in drain-source on-resistance (RDS(ON)) between channels when measured at ±15V supplies. This tight matching ensures consistent gain and attenuation across all eight channels - critical for applications like programmable-gain amplifiers and multi-channel calibration systems where channel-to-channel uniformity directly impacts measurement accuracy. The DG508ACWE+T achieves this via monolithic CMOS process optimization and matched transistor layouts.
Can the DG508ACWE+T operate with asymmetric supply voltages such as +12V and −5V?
No, the DG508ACWE+T is specified only for symmetric dual supplies ranging from ±4.5V to ±18V. Asymmetric operation (e.g., +12V/−5V) violates the device's absolute maximum ratings and may cause undefined behavior, increased leakage, or permanent damage. For non-symmetric rail requirements, consider alternatives like the MAX338 or ADG508A - but the DG508ACWE+T must be used with matched positive and negative supplies to ensure guaranteed performance and reliability.
DG508ACWE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- 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, 25pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG508ACWE+T FAQ
1.How can I place an order for DG508ACWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for DG508ACWE+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 DG508ACWE+T reliable?
The price and inventory of DG508ACWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG508ACWE+T is usually 5 days.
3.What payment methods are accepted for DG508ACWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG508ACWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG508ACWE+T?
DG508ACWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG508ACWE+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 DG508ACWE+T?
For technical support, including DG508ACWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG508ACWE+T requirements.
6.How does Aetrix verify that DG508ACWE+T is sourced from the original manufacturer or authorized distributors?
All DG508ACWE+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 DG508ACWE+T meets industry standards.
7.What is the process for return or replacement of DG508ACWE+T?
All DG508ACWE+T units undergo pre-shipment inspection (PSI). If there is an issue with DG508ACWE+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 DG508ACWE+T part is unused and in its original packaging.
Return procedure for DG508ACWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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