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Product Detailed Parameters
- Description：IC SWITCH SPST SC88A
- Series：74VHC
- Mfr：onsemi
- Package：Bulk
- Switch Circuit：-
- Multiplexer/Demultiplexer Circuit：-
- On-State Resistance (Max)：-
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：-
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：-
- -3db Bandwidth：-
- Charge Injection：-
- Channel Capacitance (CS(off), CD(off))：-
- Current - Leakage (IS(off)) (Max)：-
- Crosstalk：-
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SC-88A (SC-70-5/SOT-353)
- Number of Circuits：-
- Grade：-
- Qualification：-
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Overview
The MC74VHC1GT66DFT1 is a single-channel SPST normally open analog switch manufactured by onsemi. It operates within a supply voltage range of 2 V to 5.5 V and features a maximum on-resistance of 40 ohms. The device provides a -3dB bandwidth of 180 MHz and exhibits an off-state leakage current of up to 100 nA with a channel capacitance of 10 pF. Designed for surface mount applications, it utilizes a SC-88A (SOT-353) 5-pin package. The component supports an operating temperature range from -55°C to +125°C.
Feature Summary
- Single-pole single-throw (SPST) normally open configuration for signal routing
- Low on-resistance characteristic enabling efficient signal transmission
- High-speed performance suitable for broadband applications
- Wide operating temperature range for industrial environments
Applications
- Signal path switching in communication equipment
- Data acquisition systems requiring low distortion
- Portable electronic devices utilizing low voltage supplies
Procurement Notes
Verify the specific suffix DFT1 against official datasheets to confirm the SC-88A package and tape-and-reel orientation. Confirm RoHS compliance status as historical records indicate potential non-compliance for older production runs. Validate that the obsolete status does not impact long-term availability requirements for the intended design lifecycle.
Selection Notes
Select this component when a single-channel analog switch with TTL-compatible thresholds is required. Ensure the application voltage remains within the 2 V to 5.5 V range to maintain specified electrical characteristics. Consider the 40 ohm on-resistance limit when designing for minimal signal attenuation across the load impedance.
Part Context
This part belongs to the MC74VHC1GT series of single analog switches. It shares functional similarities with the MC74VHC1G66 but includes TTL-level input thresholds indicated by the 'T' in the model number. The device is designed to interface between different logic families while maintaining signal integrity in compact form factors.
Replacement Considerations
The Nexperia 74AHCT1G66GV,125 is documented as a similar replacement option. Verify pin compatibility and electrical parameter alignment before substitution.
