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Product Detailed Parameters
- Description：IC SW SPDT 15OHM SOT23-6
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Switch Circuit：SPDT
- Multiplexer/Demultiplexer Circuit：2:01
- On-State Resistance (Max)：15Ohm
- Channel-to-Channel Matching (ΔRon)：100mOhm
- Voltage - Supply, Single (V+)：1.65V ~ 5.5V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：-
- -3db Bandwidth：-
- Charge Injection：7pC
- Channel Capacitance (CS(off), CD(off))：2.7pF
- Current - Leakage (IS(off)) (Max)：1µA
- Crosstalk：-54dB @ 10MHz
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6
- Supplier Device Package：SOT-23-6
- Number of Circuits：1
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The SN74LVC1G3157-Q1 is a single-pole double-throw (SPDT) analog switch designed for automotive applications. It operates on a single supply voltage ranging from 1.65V to 5.5V and supports rail-to-rail signal transmission in either direction. The device handles both analog and digital signals with high linearity and low ON-state resistance, typically approximately 6Ω at 4.5V. It features specified break-before-make switching, high-speed operation with propagation delays as low as 0.5ns, and robust ESD protection exceeding 2000V per the human body model. Qualified under AEC-Q100 Grade 1, it functions reliably within an ambient temperature range of -40°C to +125°C.
Feature Summary
- AEC-Q100 qualified for Grade 1 automotive environments (-40°C to +125°C)
- Functional safety capable with documentation available for system design
- Rail-to-rail signal handling across the full supply voltage range
- Specified break-before-make switching prevents signal overlap
Applications
- Advanced driver assistance systems (ADAS)
- Analog audio routing
- Power-up monitor circuits
- Memory sharing configurations
Procurement Notes
Verify the specific package variant required for your PCB layout, as the component is available in SOT-23 (DBV) and SC-70 (DCK) packages. Confirm that the ordering suffix matches the desired reel quantity and marking code. Ensure the design accounts for the functional safety requirements if utilized in safety-critical automotive subsystems.
Selection Notes
Select this component when a single-channel SPDT switch is needed for automotive-grade signal routing. It is suitable for designs requiring wide supply voltage compatibility and high-speed switching. Consider the thermal characteristics and package size constraints when choosing between the SOT-23 and SC-70 options.
Part Context
This part belongs to the SN74LVC1G3157-Q1 family of automotive SPDT analog switches. It shares core electrical specifications with non-automotive variants but includes extended temperature ratings and qualification standards required for vehicle electronics. The 'Q1' suffix denotes its compliance with automotive reliability standards.
Replacement Considerations
SN74LVC1G3157DCKR
FAQ
What is the maximum ESD protection rating?
The device exceeds 2000V per the Human Body Model (HBM) according to MIL-STD-883, method 3015.
How does the control input determine the active channel?
A low logic level on the Select pin activates the B1 channel, while a high logic level activates the B2 channel.
Is the switching action simultaneous or sequential?
The device features specified break-before-make switching, ensuring one path disconnects before the other connects.
