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FSA1157L6X
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Product Detailed Parameters
- Description：IC SW SPST-NCX1 900MOHM 6MICROPK
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Switch Circuit：SPST - NC
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：900mOhm
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：1.65V ~ 5.5V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：20ns, 30ns
- -3db Bandwidth：300MHz
- Charge Injection：20pC
- Channel Capacitance (CS(off), CD(off))：20pF
- Current - Leakage (IS(off)) (Max)：2nA
- Crosstalk：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：6-UFDFN
- Supplier Device Package：6-MicroPak
- Number of Circuits：1
- Grade：-
- Qualification：-
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Overview
The FSA1157L6X is a single-pole, single-throw (SPST) analog switch manufactured by Fairchild Semiconductor. It operates within a supply voltage range of 1.65 V to 5.5 V and features a maximum on-resistance of 900 mΩ. The device supports a switching current of 200 mA with a maximum power dissipation of 180 mW. Propagation delays are specified at 20 ns for turn-on and 30 ns for turn-off. It utilizes a MicroPak-6 package measuring 1.45 x 1 x 0.5 mm and functions across an operating temperature range of -40 °C to +85 °C.
Feature Summary
- Low on-resistance configuration for signal integrity
- Compact MicroPak surface-mount packaging
- Wide single-supply voltage operation capability
Applications
- Portable consumer electronics
- Battery-powered devices
- Signal routing in mobile systems
Procurement Notes
Verify the manufacturer designation carefully as Fairchild Semiconductor assets were acquired by onsemi. Confirm the specific suffix L6X corresponds to the MicroPak-6 package variant rather than other available packages like SC-70-6. Ensure compliance with current RoHS standards and check for any obsolescence notices regarding this specific component code.
Selection Notes
Select this component when a low-voltage SPST switch is required in space-constrained designs. The MicroPak-6 footprint offers a smaller profile compared to standard SOT-363 packages. Verify that the 900 mΩ on-resistance meets the signal loss requirements of the application circuit before finalizing the design.
Part Context
This part belongs to the FSA1157 series of low-voltage analog switches. The L6X suffix specifically denotes the MicroPak-6 package format, distinguishing it from other variants such as the P6X which uses a SC-70-6 package. This series is designed for portable applications requiring minimal board space and low power consumption.
Replacement Considerations
The FSA1157P6X serves as a functional equivalent using a SC-70-6 package. Verify pinout compatibility and package dimensions before substitution. Other members of the FSA1157 family may offer different packaging options but share similar electrical characteristics.
