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Analog Devices Inc./Maxim Integrated DG508ACJ
- Part No.:
- DG508ACJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DG508ACJ.pdf
- Description:
- IC MUX 8:1 450OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,409
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Product details
Overview
DG508ACJ from Maxim Integrated is a monolithic CMOS 8-channel analog multiplexer (1-of-8) in 16-pin plastic DIP package, operating from ±4.5V to ±18V supplies, featuring break-before-make switching, 400Ω typical on-resistance at ±15V, <1nA off-leakage at 25°C, and TTL/CMOS-compatible logic inputs. It routes analog signals in data-acquisition systems where channel isolation and rail-to-rail signal handling are critical.
For engineers reviewing the DG508ACJ datasheet, DG508ACJ pinout, DG508ACJ application, or DG508ACJ equivalent, this device serves as a plug-in upgrade to legacy DG508A with faster enable switching (0.4μs turn-on), lower power consumption, and latchup-proof operation under powered-off input conditions - key for portable and industrial signal routing designs.
Technical Context
The DG508ACJ implements a fully decoded 3-bit address (A0–A2) to select one of eight bidirectional analog channels (S1–S8) to a common drain (D), with independent enable (EN) control. Its CMOS architecture ensures symmetrical conduction and low charge injection (<10pC).
Break-before-make timing is guaranteed at 0.2μs minimum, preventing momentary shorting during channel transitions. The device maintains functional integrity across its full ±4.5V to ±18V supply range, with on-resistance variation tightly controlled (<6% max mismatch between channels).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V - supports rail-to-rail analog input/output without clipping when V+ = +15V, V− = −15V |
| Drain-Source On-Resistance | 400Ω typ - determines voltage drop and power loss in signal path at ±15V supply |
| Off-Leakage Current | ±0.005nA typ - ensures minimal crosstalk and DC error in high-impedance sensor interfaces |
| Enable Turn-On Time | 0.4μs typ - enables fast channel switching in time-critical data logging sequences |
| Supply Voltage Range | ±4.5V to ±18V - allows direct compatibility with legacy ±5V, ±12V, and ±15V systems |
| Off-Isolation | 68dB at 500kHz - suppresses interference between inactive and active channels in multi-signal environments |
| Power Supply Current (Active) | 0.2mA max - reduces quiescent power in battery-operated portable instrumentation |
Pinout & Package
Package: 16-pin plastic DIP (0°C to +70°C operating range), lead(Pb)-free/RoHS-compliant (add '+' suffix when ordering).
| Pin/Terminal | 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: disables all switches when low, enabling only when high |
| 3 | V− | Negative supply rail - must be connected for proper analog switch biasing and leakage control |
| 4–7 | S1–S4 | Bidirectional analog input/output terminals - connect to sensors or signal sources |
| 8 | D | Common analog output/input terminal - routed to selected Sx channel when enabled |
| 9–12 | S8–S5 | Bidirectional analog input/output terminals - continuation of channel set (S5–S8) |
| 13 | V+ | Positive supply rail - establishes upper analog voltage limit and switch drive strength |
| 14 | GND | Logic and analog reference ground - required for TTL/CMOS input compatibility and noise rejection |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 0.2μs minimum open interval prevents signal shorting during channel transitions |
| Latchup-proof construction | Operates safely with input signals present while power supplies are off - eliminates need for external protection circuitry |
| Symmetrical bidirectional operation | Identical on-resistance and capacitance in either direction - supports mux or demux configurations without performance penalty |
| TTL/CMOS-compatible logic inputs | Accepts 0.8V/2.4V thresholds - interfaces directly with microcontrollers and FPGAs without level-shifting |
| Low power consumption | 0.2mA max supply current - extends battery life in portable data loggers and handheld test equipment |
Applications
| Control Systems | Data-Acquisition Systems |
|---|---|
|
Use Scenario: Routing analog feedback signals from multiple motor drives to a single ADC in industrial PLCs. IC Role / Device Role / Timing Role: Analog multiplexer providing channel-selectable signal path with break-before-make assurance. Use Value: Prevents transient shorts between drive outputs during reconfiguration, avoiding control loop instability. |
Use Scenario: Scanning thermocouple, strain gauge, and pressure sensor outputs into a shared precision ADC. IC Role / Device Role / Timing Role: Low-leakage, rail-to-rail analog switch enabling accurate DC-coupled measurements. Use Value: Sub-nA off-leakage minimizes measurement error in high-impedance sensor bridges. |
| Aircraft Heads-Up Displays | Signal Routing |
|
Use Scenario: Selecting video sync, brightness, and overlay data lines in avionics display subsystems. IC Role / Device Role / Timing Role: High-isolation analog switch isolating critical HUD timing signals from noise sources. Use Value: 68dB off-isolation at 500kHz suppresses EMI coupling between video and control paths. |
Use Scenario: Reconfiguring analog test stimulus paths in automated bench instrumentation. IC Role / Device Role / Timing Role: Fast-enable (0.4μs) multiplexer supporting programmable signal chain topologies. Use Value: Enables sub-microsecond channel switching for real-time adaptive test sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX338CPA | Single-supply operation (4.5V to 20V), 350Ω on-resistance, 100pA leakage - requires no negative rail. | Better suited for battery-powered, single-rail systems; lacks ±18V capability and differential support. | Select MAX338CPA when eliminating dual supplies simplifies design and ±15V operation is unnecessary. |
| ADG508AKRZ | ±15V rated, 450Ω on-resistance, 100pA leakage, 16-lead SOIC - RoHS-compliant, wider temp range (−40°C to +85°C). | Offers improved temperature stability and surface-mount packaging; slightly higher on-resistance. | Select ADG508AKRZ when board space, extended temperature operation, or modern packaging is prioritized over DIP form factor. |
Compared with DG508ACJ, MAX338CPA eliminates negative supply dependency but sacrifices high-voltage swing capability, while ADG508AKRZ provides enhanced thermal robustness and SMT compatibility at the cost of marginally higher on-resistance and no through-hole option.
Availability
DG508ACJ is available at Aetrix Electronics and suitable for control systems, data-acquisition systems, and aircraft heads-up displays requiring stable component supply and long-term obsolescence management.
Supply support for DG508ACJ 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, automotive, and communications applications.
The DG508ACJ belongs to Maxim's legacy analog multiplexer product line, engineered for high-voltage, low-leakage signal routing in rugged instrumentation and aerospace systems.
FAQ
What is the maximum supply voltage rating for DG508ACJ?
The DG508ACJ supports continuous operation from ±4.5V to ±18V. Absolute maximum ratings specify V+ up to +44V referenced to V−, but functional operation is guaranteed only within the ±4.5V to ±18V range. Exceeding ±18V may degrade performance or reliability, and the DG508ACJ is not characterized beyond that range per its datasheet specifications.
Does DG508ACJ support bidirectional analog signal flow?
Yes, the DG508ACJ supports fully symmetrical, bidirectional analog signal routing. Each of the eight channels (S1–S8) and the common terminal (D) can serve as either input or output, with matched on-resistance and capacitance in both directions - a core feature confirmed in the "Features" section and verified in the functional diagram and truth table.
Is DG508ACJ pin-compatible with older industry-standard DG508A variants?
Yes, the DG508ACJ is explicitly described as a plug-in upgrade for the industry-standard DG508A, sharing identical pinout, function mapping, and package (16-pin plastic DIP). No PCB layout changes are required when replacing legacy DG508A devices with DG508ACJ, though improved specs like lower leakage and faster enable times apply.
What is the typical off-isolation performance of DG508ACJ?
The DG508ACJ delivers 68dB typical off-isolation at 500kHz with 1kΩ load and 15pF capacitance, measured with VEN = 0V. This specification quantifies how effectively an unselected channel blocks signal coupling into the common output - critical for minimizing crosstalk in multi-channel data acquisition where adjacent channels operate at different frequencies or amplitudes.
Can DG508ACJ operate with only a single positive supply?
No, the DG508ACJ requires dual supplies (V+ and V−) for proper analog switch operation. Its architecture depends on symmetric rail-to-rail voltage headroom to achieve specified analog signal range (±15V) and leakage performance. For single-supply applications, Maxim recommends alternatives such as the MAX338, which is explicitly designed for 4.5V to 20V single-rail use - the DG508ACJ does not support that configuration.
DG508ACJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DG508ACJ FAQ
1.How can I place an order for DG508ACJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG508ACJ 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 DG508ACJ reliable?
The price and inventory of DG508ACJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG508ACJ is usually 5 days.
3.What payment methods are accepted for DG508ACJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG508ACJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG508ACJ?
DG508ACJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG508ACJ 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 DG508ACJ?
For technical support, including DG508ACJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG508ACJ requirements.
6.How does Aetrix verify that DG508ACJ is sourced from the original manufacturer or authorized distributors?
All DG508ACJ 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 DG508ACJ meets industry standards.
7.What is the process for return or replacement of DG508ACJ?
All DG508ACJ units undergo pre-shipment inspection (PSI). If there is an issue with DG508ACJ, 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 DG508ACJ part is unused and in its original packaging.
Return procedure for DG508ACJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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