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FSA1256AL8X
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Product Detailed Parameters
- Description：IC SW SPST-NOX2 1.15OHM 8MICROPK
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：SPST - NO
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：1.15Ohm
- Channel-to-Channel Matching (ΔRon)：60mOhm
- Voltage - Supply, Single (V+)：2.7V ~ 5.5V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：35ns, 15ns
- -3db Bandwidth：300MHz
- Charge Injection：20pC
- Channel Capacitance (CS(off), CD(off))：11.5pF
- Current - Leakage (IS(off)) (Max)：2nA (Typ)
- Crosstalk：-100dB @ 1MHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-UFQFN
- Supplier Device Package：8-MicroPak™
- Number of Circuits：2
- Grade：-
- Qualification：-
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Overview
The FSA1256AL8X is a dual single-pole single-throw (SPST) analog switch manufactured by onsemi, housed in an 8-pin MicroPak package. It operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device features a maximum on-resistance of 1.15 Ohms and supports a DC switch current of 200 mA. Electrical performance includes a maximum turn-on time of 35 ns and a maximum turn-off time of 15 ns. Power dissipation is rated at 180 mW with a maximum supply current of 500 nA. The component functions within a temperature range of -40°C to +85°C.
Feature Summary
- Dual SPST configuration for independent signal path control
- Low on-resistance for minimal signal attenuation
- High-speed switching capability for data integrity
- Ultra-low power consumption suitable for battery-operated systems
Applications
- Portable consumer electronics signal routing
- Battery-powered equipment protection circuits
- Video and audio signal switching applications
- Data acquisition system channel selection
Procurement Notes
Verify the specific ordering suffix and RoHS compliance status through official manufacturer documentation before procurement. Confirm availability as distribution channels may indicate discontinuation or limited stock. Ensure the selected package variant matches the required PCB footprint and soldering profile specifications.
Selection Notes
Select this component when low on-resistance and high-speed switching are required in a compact surface-mount package. Evaluate the 2.7 V to 5.5 V operating range against the target system voltage. Consider the 200 mA DC switch current limit for load requirements and verify thermal dissipation capabilities within the specified ambient temperature range.
Part Context
This part belongs to the FSA1256A series of analog switches designed for portable applications. It shares the MicroPak-8 package form factor with other small-signal switches in the portfolio. The series emphasizes low power consumption and fast switching speeds to support modern mobile and handheld device architectures.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Verify pin compatibility and electrical parameters with alternative dual SPST switches if sourcing this specific part number proves difficult.
