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Product Detailed Parameters
- Description：IC SW SPST-NCX2 900MOHM SOT23-8
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Switch Circuit：SPST - NC
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：900mOhm
- Channel-to-Channel Matching (ΔRon)：30mOhm
- Voltage - Supply, Single (V+)：1.6V ~ 3.6V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：14ns, 9ns
- -3db Bandwidth：125MHz
- Charge Injection：3pC
- Channel Capacitance (CS(off), CD(off))：23pF, 20pF
- Current - Leakage (IS(off)) (Max)：2nA
- Crosstalk：-95dB @ 1MHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-8
- Supplier Device Package：SOT-23-8
- Number of Circuits：2
- Grade：-
- Qualification：-
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Overview
The TS3A4742DCNR is a dual single-pole single-throw (SPST) analog switch manufactured by Texas Instruments. It operates on a single supply voltage ranging from 1.65 V to 3.6 V, with signal voltages supported from 0 V to the positive rail. The device features a typical on-resistance of 0.8 ohms and a maximum on-resistance of 0.9 ohms. It offers a bandwidth of 125 MHz and low power consumption with a maximum supply current of 750 nA. The component is housed in an 8-pin SOT-23 package and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Supports full rail-to-rail signal switching capability across the entire supply voltage range.
- Provides low on-resistance for minimal signal attenuation in audio and data paths.
- Enables compact system design through small footprint packaging suitable for portable devices.
Applications
- Audio path switching in mobile phones and portable media players
- Video signal routing in handheld devices
- Data line protection and multiplexing in consumer electronics
Procurement Notes
Verify the specific suffix DCNR against the manufacturer datasheet to confirm the SOT-23-8 package type and tape-and-reel shipping configuration. Ensure compatibility with RoHS directives and check for moisture sensitivity level requirements during storage and handling procedures before assembly.
Selection Notes
Select this component when a dual-channel SPST switch is required for low-voltage single-supply applications. Compare on-resistance values and channel count against alternatives like the TS3A4741 if quad channels are needed. Confirm that the operating voltage range aligns with the system's power supply constraints.
Part Context
This part belongs to the TS3A474x family of low-voltage analog switches. It shares functional similarities with the TS3A4741 but differs in channel configuration or pinout arrangements. The series is designed for space-constrained portable electronics requiring high performance at low voltages.
Replacement Considerations
The TS3A4741DGKR serves as a related variant within the same family. Verify pin compatibility and electrical specifications before substitution. Other manufacturers offer similar switches, but direct pin-for-pin replacements require careful validation of on-resistance and voltage limits.
