SN3257QDYYRQ1

$0.71

Description：IC SWITCH SPDT X 1 5OHM 16SOT23
Series：-

SKU:f9a49c50142a Category: Analog Switches, Multiplexers, Demultiplexers Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC SWITCH SPDT X 1 5OHM 16SOT23
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Switch Circuit：SPDT
Multiplexer/Demultiplexer Circuit：2:01
On-State Resistance (Max)：5Ohm
Channel-to-Channel Matching (ΔRon)：70mOhm
Voltage - Supply, Single (V+)：1.5V ~ 5.5V
Voltage - Supply, Dual (V±)：-
Switch Time (Ton, Toff) (Max)：35µs, 95ns
-3db Bandwidth：1.2GHz
Charge Injection：3.5pC
Channel Capacitance (CS(off), CD(off))：4pF, 4pF
Current - Leakage (IS(off)) (Max)：900nA (Typ)
Crosstalk：-90dB @ 100kHz
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount
Package / Case：SOT-23-16 Thin, SOT-23 Variant
Supplier Device Package：16-SOT-23-THIN
Number of Circuits：1
Grade：Automotive
Qualification：AEC-Q100

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SN3257QDYYRQ1

Overview

The SN3257QDYYRQ1 is an automotive-grade CMOS analog switch featuring four independent 2:1 single-pole double-throw (SPDT) channels. It operates within a supply voltage range of 1.5 V to 5.5 V and supports bidirectional signal paths with low propagation delay of 78 ps. The device offers a maximum on-resistance of 5 Ω and a bandwidth of 2 GHz. It includes fail-safe logic, integrated pull-down resistors, and powered-off protection up to 3.6 V. The component is housed in a 16-pin SOT-23-THIN package and functions reliably across temperatures from -40°C to +125°C.

Feature Summary

Supports bidirectional analog and digital signals with input voltages exceeding the supply rail.
Features fail-safe logic allowing control pin application before power-up.
Includes integrated pull-down resistors on logic pins to reduce external components.
Provides powered-off isolation to prevent back-powering when supply is removed.

Applications

SPI multiplexing
I2S multiplexing
eSIM multiplexing
Battery management systems (BMS)
Automotive telematics control units

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the SN3257-Q1 family includes both TSSOP and SOT-23-THIN variants. Confirm that the Q1 suffix aligns with automotive qualification requirements for your target application environment. Ensure compatibility with the intended logic voltage levels and thermal constraints during the procurement phase.

Selection Notes

Select this component for applications requiring high-speed signal routing with minimal distortion. The low on-resistance and high bandwidth make it suitable for multi-lane protocols like SPI and I2S. Consider the SOT-23-THIN package for space-constrained designs while verifying thermal dissipation capabilities under continuous load conditions.

Part Context

This part belongs to the SN3257-Q1 family of automotive analog switches. It is designed to replace discrete switching solutions in compact PCB layouts. The device integrates multiple SPDT switches into a single IC, reducing system complexity and board area compared to using individual mechanical or solid-state switches.