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DG444DY-E3
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Product Detailed Parameters
- Description：IC SWITCH SPST-NCX4 85OHM 16SOIC
- Series：-
- Mfr：Vishay Siliconix
- Package：Tube
- Switch Circuit：SPST - NC
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：85Ohm
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：5V ~ 36V
- Voltage - Supply, Dual (V±)：±5V ~ 20V
- Switch Time (Ton, Toff) (Max)：250ns, 140ns
- -3db Bandwidth：-
- Charge Injection：-1pC
- Channel Capacitance (CS(off), CD(off))：4pF, 4pF
- Current - Leakage (IS(off)) (Max)：500pA
- Crosstalk：-100dB @ 1MHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Number of Circuits：4
- Grade：-
- Qualification：-
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Overview
The DG444DY-E3 is a monolithic quad single-pole single-throw (SPST) normally closed CMOS analog switch manufactured by Vishay Siliconix. It operates on a high-voltage silicon-gate process with an epitaxial layer to prevent latchup. The device supports single supplies from +5 V to +36 V and dual supplies from ±5 V to ±20 V. Key electrical parameters include a maximum drain-source on-resistance of 85 Ω at room temperature, rising to 100 Ω across the full operating range. Typical turn-on time is 120 ns, with a maximum of 250 ns under dual supply conditions. Leakage current is typically 80 pA, and power consumption is approximately 22 nW.
Feature Summary
- Normally closed SPST configuration for signal path control
- High-voltage silicon-gate process with epitaxial layer preventing latchup
- TTL/CMOS logic compatible interface
- Minimized charge injection suitable for sample-and-hold circuits
Applications
- Sample-and-hold circuits
- Data acquisition systems
- Audio switching
- Telecommunication systems
- Automatic test equipment
Procurement Notes
Verify that the ordering suffix 'E3' corresponds to lead-free and RoHS compliance as specified in the manufacturer's documentation. Confirm the package type matches the narrow SOIC-16 footprint requirements for the target PCB layout. Ensure the component status is active before finalizing procurement plans.
Selection Notes
Select this part when a normally closed state is required upon initialization or logic low input. Compare against the DG445 if a normally open configuration is needed instead. Verify that the 85 Ω on-resistance meets the signal integrity requirements for the specific application voltage levels.
Part Context
This component belongs to the DG444/DG445 family of quad SPST analog switches. It serves as a direct upgrade replacement for legacy DG211 sockets. The device shares functional similarities with the DG445 but differs in its default switch state, being normally closed rather than normally open.
Replacement Considerations
DG445DY-E3: Identical specifications except for normally open configuration.
FAQ
What is the default state of the DG444 switches?
The DG444 features a normally closed (NC) function, meaning the switches are ON when the logic input is LOW.
How does the DG444 prevent latchup?
It is built on a high-voltage silicon-gate process that includes an epitaxial layer specifically designed to prevent latchup.
What is the typical charge injection value?
The typical charge injection is -1 pC, measured with CL = 1 nF and VS = 0 V.
