DG508ACWE

Overview

The DG508ACWE is a monolithic CMOS analog multiplexer manufactured by Analog Devices Inc./Maxim Integrated. It functions as a single 8-channel (1-of-8) switch with bidirectional signal paths. The device operates on dual power supplies ranging from ±4.5V to ±18V and supports an analog signal range of -15V to +15V. Electrical characteristics at ±15V include a maximum drain-source on-resistance of 450 Ohms, a switching transition time of 1.0 µs, and a break-before-make interval of 0.2 µs. Logic inputs are compatible with both TTL and CMOS standards. The component is housed in a 16-pin Wide SO package and is rated for an operating temperature range of 0°C to +70°C.

Feature Summary

• Monolithic low-power CMOS design ensuring latchup-proof construction during power-off conditions.
• Guaranteed break-before-make switching sequence prevents signal shorting between channels.
• Symmetrical, bidirectional operation suitable for both multiplexing and demultiplexing applications.
• Logic and enable inputs designed for direct compatibility with standard TTL and CMOS logic families.

Applications

• Data-acquisition systems
• Signal routing networks
• Control systems
• Aircraft heads-up displays

Procurement Notes

Verify the specific suffix 'CWE' to confirm the 16-pin Wide SOIC package and commercial temperature grade (0°C to +70°C). Ensure the ordering documentation explicitly states lead-free/RoHS compliance if required by the assembly process. Cross-reference the manufacturer part number against current distributor listings to confirm active status and availability constraints.

Selection Notes

Select this component when an 8-channel single-ended analog switch is required within a wide supply voltage range. The DG508ACWE offers a balance of moderate on-resistance and low leakage currents. Consider alternative packages such as ADJ or AEWE if extended industrial temperature ranges (-40°C to +85°C) are necessary for the target environment.

Part Context

This device belongs to the DG508A/DG509A family of monolithic CMOS analog multiplexers. The DG508A variant specifically provides a single 8-channel configuration, whereas the DG509A offers differential 4-channel capabilities. Both devices serve as plug-in upgrades to industry-standard equivalents, featuring improved switching speeds and lower power consumption compared to legacy designs.

Replacement Considerations

Direct substitutes include other DG508A variants with different thermal grades or packages, such as DG508ADJ (Plastic DIP, -40°C to +85°C) or DG508AEWE (Wide SO, -40°C to +85°C). Verify pinout compatibility and electrical parameter tolerances before substituting across different package types.

FAQ

Does the DG508ACWE support single-supply operation?

Yes, the device guarantees continuous operation with supply voltages ranging from ±4.5V to ±18V, allowing for flexible single or dual supply configurations.

What is the maximum analog signal voltage the device can handle?

The analog signal range is specified from -15V to +15V relative to the negative supply rail.

How does the device prevent channel interference during switching?

The DG508ACWE guarantees a break-before-make switching sequence with a minimum open time of 0.2 µs, preventing simultaneous connection of multiple channels.