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Product Detailed Parameters
- Description：IC SW SPST-NCX4 100OHM 16SOIC
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube
- Switch Circuit：SPST - NC
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：100Ohm
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：5V ~ 30V
- Voltage - Supply, Dual (V±)：±5V ~ 20V
- Switch Time (Ton, Toff) (Max)：250ns, 150ns
- -3db Bandwidth：-
- Charge Injection：-10pC
- Channel Capacitance (CS(off), CD(off))：11pF, 8pF
- Current - Leakage (IS(off)) (Max)：5nA
- Crosstalk：-
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Number of Circuits：4
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Overview
The DG309CY+ is a quad, single-pole-single-throw (SPST) normally closed analog switch manufactured by Analog Devices Inc./Maxim Integrated. It features a channel on-resistance of 60 Ω with a maximum of 100 Ω. The device supports split supplies from ±5V to ±20V or a single positive supply from +5V to +30V. Key electrical parameters include a turn-on time of 130ns to 200ns and a turn-off time of 90ns to 150ns. It operates within a temperature range of 0°C to +70°C and utilizes a 16-pin Narrow SOIC package.
Feature Summary
- Monolithic low-power CMOS design providing reduced input loading and very low leakage currents.
- CMOS logic compatible inputs allowing direct interfacing with standard digital control circuits.
- 44V maximum breakdown voltage rating enabling 30V peak-to-peak switch-off blocking capacity.
Applications
- Sample-and-Hold Circuits
- Test Equipment
- Communications Systems
Procurement Notes
Verify the specific suffix 'CY' corresponds to the 16-pin Narrow SOIC package and the commercial temperature grade of 0°C to +70°C. Confirm that the component is sourced from authorized distributors to ensure authenticity and traceability. Check for RoHS compliance status as indicated in official documentation.
Selection Notes
Select this component when a normally closed SPST configuration is required for signal routing. Ensure the application voltage does not exceed the 44V absolute maximum rating. Consider the 60 Ω typical on-resistance and switching speeds suitable for general-purpose analog signal paths rather than high-frequency precision applications.
Part Context
This part belongs to the DG308A/DG309 family of quad SPST analog switches. While the DG308A is normally open, the DG309 variant provides a normally closed state. Both share identical pinouts and electrical characteristics, differing only in their default logic states.
Replacement Considerations
Public confirmed substitute part numbers: DG309DY+, DG309CJ+
FAQ
What is the default state of the DG309 switches?
The DG309 switches are normally closed (NC), meaning they conduct current when the logic input is low.
Can the DG309 operate with a single power supply?
Yes, it can be used with a single positive supply ranging from +5V to +30V, though switching speed may be slower compared to bipolar supplies.
What is the maximum analog signal range?
The analog signal range is limited by the supply voltages, typically between V- and V+, with a maximum breakdown voltage rating of 44V.
