홈 스위치 및 멀티플렉서 아날로그 스위치 및 멀티플렉서
홈
스위치 및 멀티플렉서
아날로그 스위치 및 멀티플렉서

SN3257-Q1

활성

1.8V 로직 및 전원 차단 보호를 지원하는 오토모티브 5V, 2:1(SPDT), 4채널 스위치

지금 주문
데이터시트

SN3257-Q1

활성
데이터시트 지금 주문

제품 상세 정보

Configuration 2:1 SPDT Number of channels 4 Power supply voltage - single (V) 1.8, 2.5, 3.3, 5 Protocols A2B, Analog, I2C, I2S, JTAG, RGMII, SPI, TDM, UART Ron (typ) (Ω) 2 CON (typ) (pF) 8 ON-state leakage current (max) (µA) 0.9 Supply current (typ) (µA) 7.5 Operating temperature range (°C) -40 to 125 Features 1.8-V compatible control inputs, Break-before-make, Fail-safe logic, Integrated pulldown resistor on logic pin, Powered-off protection, Supports input voltage beyond supply Input/output continuous current (max) (mA) 25 TI functional safety category Functional Safety-Capable Rating Automotive Drain supply voltage (max) (V) 5.5 Supply voltage (max) (V) 5.5
Configuration 2:1 SPDT Number of channels 4 Power supply voltage - single (V) 1.8, 2.5, 3.3, 5 Protocols A2B, Analog, I2C, I2S, JTAG, RGMII, SPI, TDM, UART Ron (typ) (Ω) 2 CON (typ) (pF) 8 ON-state leakage current (max) (µA) 0.9 Supply current (typ) (µA) 7.5 Operating temperature range (°C) -40 to 125 Features 1.8-V compatible control inputs, Break-before-make, Fail-safe logic, Integrated pulldown resistor on logic pin, Powered-off protection, Supports input voltage beyond supply Input/output continuous current (max) (mA) 25 TI functional safety category Functional Safety-Capable Rating Automotive Drain supply voltage (max) (V) 5.5 Supply voltage (max) (V) 5.5
SOT-23-THN (DYY) 16 8.4 mm² 4.2 x 2 TSSOP (PW) 16 32 mm² 5 x 6.4
  • Functional safety-capable
  • 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: 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
  • Functional safety-capable
  • 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: 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

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 VDD x 2, with a maximum input and output voltage of 5.5 V.

The SN3257-Q1 has an active low EN pin that is used to enable and disable all channels simultaneously. When the EN pin is LOW, one of the two switch paths is selected based on the state of SEL pin.

Powered-off protection up to 3.6 V on the signal path of the SN3257-Q1 provides isolation when the supply voltage is removed (VDD = 0 V). Without this protection feature, switches can back-power the supply rail through an internal ESD diode and cause potential damage to the system.

Fail-safe logic circuitry allows voltages on the logic control pins to be applied before the supply pin, protecting the device from potential damage. Both logic control inputs have 1.8 V logic compatible thresholds, ensuring both TTL and CMOS logic compatibility. Integrated pull down resistor on the logic pins removes external components to reduce system size and cost.

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 VDD x 2, with a maximum input and output voltage of 5.5 V.

The SN3257-Q1 has an active low EN pin that is used to enable and disable all channels simultaneously. When the EN pin is LOW, one of the two switch paths is selected based on the state of SEL pin.

Powered-off protection up to 3.6 V on the signal path of the SN3257-Q1 provides isolation when the supply voltage is removed (VDD = 0 V). Without this protection feature, switches can back-power the supply rail through an internal ESD diode and cause potential damage to the system.

Fail-safe logic circuitry allows voltages on the logic control pins to be applied before the supply pin, protecting the device from potential damage. Both logic control inputs have 1.8 V logic compatible thresholds, ensuring both TTL and CMOS logic compatibility. Integrated pull down resistor on the logic pins removes external components to reduce system size and cost.
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모두 보기13
유형 직함 날짜
* Data sheet SN3257-Q1 Automotive 5-V, Low Propagation Delay, 2:1 (SPDT),4-Channel Switch With 1.8 V Logic datasheet (Rev. D) PDF | HTML 2022/10/03
Application note Short to Battery Protection with TI Analog Switches and Multiplexers PDF | HTML 2024/02/26
Product overview How to Communicate I2S Signals Between MCU, DSPs, & Amplifiers Using Multiplexer (Rev. A) PDF | HTML 2023/06/23
Application brief 1.8-V Logic for Multiplexers and Signal Switches (Rev. C) PDF | HTML 2022/07/26
Application note Selecting the Correct Texas Instruments Signal Switch (Rev. E) PDF | HTML 2022/06/02
Application note Multiplexers and Signal Switches Glossary (Rev. B) PDF | HTML 2021/12/01
Application brief Enabling SPI-Based Flash Memory Expansion by Using Multiplexers (Rev. B) PDF | HTML 2021/10/07
Application brief Expanding Functionality of Cell Supervision Unit in Battery Management Systems PDF | HTML 2021/09/14
Application brief Eliminate Power Sequencing with Powered-off Protection Signal Switches (Rev. C) PDF | HTML 2021/01/06
Technical article Overcome last-minute requirement changes with SOT-23 multiplexers PDF | HTML 2020/09/18
Functional safety information SN3257-Q1 Functional Safety FIT Rate, FMD and Pin FMA 2020/02/18
EVM User's guide 16DYYPWEVM Test board for SOT-23 THIN (DYY) and TSSOP (PW) packages User's Guide 2019/11/11
Technical article Roll with the design punches and overcome power-sequencing challenges PDF | HTML 2019/07/29

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

16DYYPWEVM — SOT-23 THIN(DYY) 및 TSSOP(PW) 패키지용 테스트 보드

The 16DYYPWEVM test board provides a dual footprint for SOT-23 THIN (DYY) and TSSOP (PW) packages.  This test board is used for quick prototyping and testing of integrated ciructs in 16 pin SOT-23 THIN (DYY) and TSSOP (PW) packages. 
사용 설명서: PDF
TI.com에서 구매할 수 없습니다
인터페이스 어댑터

LEADED-ADAPTER1 — TI의 5, 8, 10, 16 및 24핀 리드 패키지의 빠른 테스트를 위한 DIP 헤더 어댑터에 대한 표면 실장

The EVM-LEADED1 board allows for quick testing and bread boarding of TI's common leaded packages.  The board has footprints to convert TI's D, DBQ, DCT,DCU, DDF, DGS, DGV, and PW surface mount packages to 100mil DIP headers.     

사용 설명서: PDF
TI.com에서 구매할 수 없습니다
시뮬레이션 모델

SN3257-Q1 IBIS Model (Rev. A)

SCDM234A.ZIP (24 KB) - IBIS Model
다운로드
패키지 핀 다운로드
SOT-23-THN (DYY) 16 옵션 보기
TSSOP (PW) 16 옵션 보기
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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