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SN3257-Q1
SCDS411B – JULY 2019 – ...
Product Folder
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Technical Documents
Tools & Software
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SN3257-Q1
SCDS411B – JULY 2019 – REVISED JANUARY 2020
SN3257-Q1 5-V, Low Propagation Delay, 2:1 (SPDT), 4-Channel Switch with 1.8 V Logic
1 Features
1 AEC-Q100 qualified for automotive application – Temperature grade 1: -40°C to +125°C, TA
Wide supply range: 1.5 V to 5.5 V Low propagation delay: 78 ps Low on-resistance: 5 Ω High bandwidth: 1.2 GHz Bidirectional Signal Path Supports Input
Voltage Beyond Supply 1.8 V Logic Compatible Integrated Pull Down Resistor on Logic Pins Fail-Safe Logic Powered-off Protection up to 3.6 V Signals
2 Applications
SPI multiplexing I2S multiplexing eSIM multiplexing eMMC multiplexing Flash memory sharing Battery management system (BMS) Telematics control unit (TCU) Smart telematics gateway Rear seat entertainment Digital cockpit processing unit Automotive head unit Automotive navigation ADAS domain controller Surround view system ECU On-board (OBC) & wireless charger
3 Description
The SN3257-Q1 is an automotive grade complementary metal-oxide semiconductor (
CMOS) switch that supports high speed signals with low propagation delay. The SN3257-Q1 offers a 2:1 (SPDT) switch configuration with 4-channels making it ideal for multi-lane protocols such as SPI and I2S. The device supports bidirectional analog and digital signals on the source (SxA, SxB) and drain (Dx) pins and can pass signals above supply up to VD...
