홈 로직 및 전압 변환 전압 변환기 및 레벨 시프터 방향 제어 전압 변환기
홈
로직 및 전압 변환
전압 변환기 및 레벨 시프터
방향 제어 전압 변환기

SN74AXC4T245

활성

4비트 듀얼 공급 버스 트랜시버

지금 주문
데이터 시트

SN74AXC4T245

활성
데이터 시트 지금 주문

제품 상세 정보

Technology family AXC Applications JTAG, SPI, UART Bits (#) 4 High input voltage (min) (V) 0.455 High input voltage (max) (V) 3.6 Vout (min) (V) 0.65 Vout (max) (V) 3.6 Data rate (max) (Mbps) 380 IOH (max) (mA) -12 IOL (max) (mA) 12 Supply current (max) (µA) 40 Features Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Input type Standard CMOS Output type 3-State, Balanced CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 125
Technology family AXC Applications JTAG, SPI, UART Bits (#) 4 High input voltage (min) (V) 0.455 High input voltage (max) (V) 3.6 Vout (min) (V) 0.65 Vout (max) (V) 3.6 Data rate (max) (Mbps) 380 IOH (max) (mA) -12 IOL (max) (mA) 12 Supply current (max) (µA) 40 Features Output enable, Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Input type Standard CMOS Output type 3-State, Balanced CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 125
TSSOP (PW) 16 32 mm² 5 x 6.4 UQFN (RSV) 16 4.68 mm² 2.6 x 1.8 WQFN (BQB) 16 8.75 mm² 3.5 x 2.5
  • Fully configurable dual-rail design allows each port to operate with a power supply range from 0.65V to 3.6V
  • Operating temperature from –40°C to +125°C
  • Multiple direction control pins to allow simultaneous up and down translation
  • Glitch-free power supply sequencing
  • Up to 380Mbps support when translating from 1.8V to 3.3V
  • VCC isolation feature:
    • If either VCC input is below 100mV, all I/Os outputs are disabled and become high-impedance
  • Ioff supports Partial-Power-Down mode operation
  • Compatible with AVC family level shifters
  • Latch-up performance exceeds 100mA per JESD 78, Class II
  • ESD protection exceeds JESD 22:
    • 8000V Human-Body Model
    • 1000V Charged-Device Model
  • Fully configurable dual-rail design allows each port to operate with a power supply range from 0.65V to 3.6V
  • Operating temperature from –40°C to +125°C
  • Multiple direction control pins to allow simultaneous up and down translation
  • Glitch-free power supply sequencing
  • Up to 380Mbps support when translating from 1.8V to 3.3V
  • VCC isolation feature:
    • If either VCC input is below 100mV, all I/Os outputs are disabled and become high-impedance
  • Ioff supports Partial-Power-Down mode operation
  • Compatible with AVC family level shifters
  • Latch-up performance exceeds 100mA per JESD 78, Class II
  • ESD protection exceeds JESD 22:
    • 8000V Human-Body Model
    • 1000V Charged-Device Model

The SN74AXC4T245 is a four-bit noninverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCA and VCCB supplies as low as 0.65V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65V to 3.6V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65V to 3.6V. Additionally the SN74AXC4T245 is compatible with a single-supply system.

The SN74AXC4T245 device is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level of the direction-control inputs (1DIR and 2DIR). The output-enable inputs (1 OE and 2 OE) are used to disable the outputs so the buses are effectively isolated. The SN74AXC4T245 device is designed so the control pins (xDIR and x OE) are referenced to VCCA.

To put the level shifter I/Os in the high-impedance state during power up or power down, tie the xOE pins to VCCA through a pullup resistor.

This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry ensures that no excessive current is drawn from or to an input, output, or combined I/O that is biased to a specific voltage while the device is powered down.

The design of the VCC isolation feature allows both I/O ports to enter a high-impedance state by disabling their outputs if either VCCA or VCCB is less than 100mV.

Glitch-Free power supply sequencing allows either supply rail to be powered on or off in any order while providing robust power sequencing performance.

The SN74AXC4T245 is a four-bit noninverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCA and VCCB supplies as low as 0.65V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65V to 3.6V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65V to 3.6V. Additionally the SN74AXC4T245 is compatible with a single-supply system.

The SN74AXC4T245 device is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level of the direction-control inputs (1DIR and 2DIR). The output-enable inputs (1 OE and 2 OE) are used to disable the outputs so the buses are effectively isolated. The SN74AXC4T245 device is designed so the control pins (xDIR and x OE) are referenced to VCCA.

To put the level shifter I/Os in the high-impedance state during power up or power down, tie the xOE pins to VCCA through a pullup resistor.

This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry ensures that no excessive current is drawn from or to an input, output, or combined I/O that is biased to a specific voltage while the device is powered down.

The design of the VCC isolation feature allows both I/O ports to enter a high-impedance state by disabling their outputs if either VCCA or VCCB is less than 100mV.

Glitch-Free power supply sequencing allows either supply rail to be powered on or off in any order while providing robust power sequencing performance.
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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치보다 업그레이드된 기능을 지원하는 드롭인 대체품
SN74AXC4T245-Q1 활성 오토모티브 4비트 듀얼 공급 버스 트랜시버 - 구성 가능한 전압 변환 및 3상 출력 포함 Automotive qualified 4 bit translator
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
SN74AXC4T774 활성 3상 출력 및 독립 방향 제어 입력을 지원하는 4비트 듀얼 공급 버스 트랜시버 4 Bit Level Translator with per channel control
SN74AXC4T774-Q1 활성 3상 출력 및 독립 방향 제어 입력을 지원하는 오토모티브 4비트 2공급 버스 트랜시버 Provides grouped channel selection
비교 대상 장치와 유사한 기능
SN74AVC24T245 활성 구성 가능한 전압 변환 및 3상 출력을 지원하는 24비트 듀얼 공급 버스 트랜시버 Similar function in 24-channel version
SN74AVC32T245 활성 구성 가능한 전압 변환 및 3상 출력을 지원하는 32비트 듀얼 공급 버스 트랜시버 Similar function in 32-channel version

기술 자료

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10개 모두 보기
유형 직함 날짜
* Data sheet SN74AXC4T245 Four-Bit Bus Transceiver with Configurable Voltage Translation and Tri-State Outputs datasheet (Rev. B) PDF | HTML 2024/04/11
Application note Schematic Checklist - A Guide to Designing With Fixed or Direction Control Translators PDF | HTML 2024/10/02
Application note Schematic Checklist - A Guide to Designing with Auto-Bidirectional Translators PDF | HTML 2024/07/12
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 2024/07/03
Application brief Future-Proofing Your Level Shifter Design with TI's Dual Footprint Packages PDF | HTML 2023/09/05
Application brief Translate Voltages for UART (Rev. B) PDF | HTML 2021/08/04
Selection guide Voltage Translation Buying Guide (Rev. A) 2021/04/15
Application note 2N7001T Voltage Level Translator for SPI, UART, JTAG Interface (Rev. A) PDF | HTML 2021/03/29
Application note Low Voltage Translation for SPI, UART, RGMII, JTAG Interfaces (Rev. B) PDF | HTML 2021/03/29
Application note Glitch free power sequencing with AXC level translators (Rev. A) 2018/09/20

설계 및 개발

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

평가 보드

14-24-LOGIC-EVM — 14핀~24핀 D, DB, DGV, DW, DYY, NS 및 PW 패키지용 로직 제품 일반 평가 모듈

14-24-LOGIC-EVM 평가 모듈(EVM)은 14핀~24핀 D, DW, DB, NS, PW, DYY 또는 DGV 패키지에 있는 모든 로직 장치를 지원하도록 설계되었습니다.

사용 설명서: PDF | HTML
TI.com에서 구매 불가
평가 보드

14-24-NL-LOGIC-EVM — 14핀~24핀 비 리드 패키지용 로직 제품 일반 평가 모듈

14-24-NL-LOGIC-EVM은 14핀~24핀 BQA, BQB, RGY, RSV, RJW 또는 RHL 패키지가 있는 로직 또는 변환 디바이스를 지원하도록 설계된 유연한 평가 모듈(EVM)입니다.

사용 설명서: PDF | HTML
TI.com에서 구매 불가
평가 보드

AVCLVCDIRCNTRL-EVM — AVC 및 LVC를 지원하는 방향 제어 양방향 변환 디바이스를 위한 일반 EVM

The generic EVM is designed to support one, two, four and eight channel LVC and AVC direction-controlled translation devices. It also supports the bus hold and automotive -Q1 devices in the same number of channels. The AVC are low voltage translation devices with lower drive strength of 12mA. LVC (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

SN74AXC4T245 IBIS Model (Rev. A)

SCEM585A.ZIP (35 KB) - IBIS Model
다운로드
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
TSSOP (PW) 16 Ultra Librarian
UQFN (RSV) 16 Ultra Librarian
WQFN (BQB) 16 Ultra Librarian
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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