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方向控制型电压转换器

SN74LVC16T245

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具有可配置电平转换/电压转换的 16 位双电源总线收发器

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SN74LVC16T245

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产品详情

Technology family LVC Applications GPIO Bits (#) 16 High input voltage (min) (V) 1.08 High input voltage (max) (V) 5.5 Vout (min) (V) 1.65 Vout (max) (V) 5.5 Data rate (max) (Mbps) 200 IOH (max) (mA) -32 IOL (max) (mA) 32 Supply current (max) (µA) 30 Features Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Input type Bidirectional, CMOS, Overvoltage Tolerant Output type 3-State, Balanced CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 85
Technology family LVC Applications GPIO Bits (#) 16 High input voltage (min) (V) 1.08 High input voltage (max) (V) 5.5 Vout (min) (V) 1.65 Vout (max) (V) 5.5 Data rate (max) (Mbps) 200 IOH (max) (mA) -32 IOL (max) (mA) 32 Supply current (max) (µA) 30 Features Overvoltage tolerant inputs, Partial power down (Ioff), Vcc isolation Input type Bidirectional, CMOS, Overvoltage Tolerant Output type 3-State, Balanced CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 85
SSOP (DL) 48 164.358 mm² 15.88 x 10.35 TSSOP (DGG) 48 101.25 mm² 12.5 x 8.1 TVSOP (DGV) 48 62.08 mm² 9.7 x 6.4
  • Control Inputs VIH/VIL Levels are Referenced to
    VCCA Voltage
  • VCC Isolation Feature – If Either VCC Input is at
    GND, Both Ports are in the High-Impedance State
  • Overvoltage-Tolerant Inputs and Outputs Allow
    Mixed Voltage-Mode Data Communications
  • Fully Configurable Dual-Rail Design Allows Each
    Port to Operate Over the Full 1.65-V to 5.5-V
    Power-Supply Range
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22
  • Control Inputs VIH/VIL Levels are Referenced to
    VCCA Voltage
  • VCC Isolation Feature – If Either VCC Input is at
    GND, Both Ports are in the High-Impedance State
  • Overvoltage-Tolerant Inputs and Outputs Allow
    Mixed Voltage-Mode Data Communications
  • Fully Configurable Dual-Rail Design Allows Each
    Port to Operate Over the Full 1.65-V to 5.5-V
    Power-Supply Range
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22

This 16-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.

The SN74LVC16T245 device is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.

The SN74LVC16T245 control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCA.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The VCC isolation feature ensures that if either VCC input is at GND, then both ports are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This 16-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.

The SN74LVC16T245 device is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.

The SN74LVC16T245 control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCA.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The VCC isolation feature ensures that if either VCC input is at GND, then both ports are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
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类型 标题 下载最新的英语版本 日期
* 数据表 SN74LVC16T245 16-bit Dual-Supply Bus Transceiver With Configurable Level-Shifting / Voltage Translation and Tri-State Outputs 数据表 (Rev. B) PDF | HTML 2015年 4月 28日
应用手册 Implications of Slow or Floating CMOS Inputs (Rev. E) 2021年 7月 26日
选择指南 Voltage Translation Buying Guide (Rev. A) 2021年 4月 15日
选择指南 Little Logic Guide 2018 (Rev. G) 2018年 7月 6日
选择指南 Logic Guide (Rev. AB) 2017年 6月 12日
应用手册 How to Select Little Logic (Rev. A) 2016年 7月 26日
应用手册 Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 2015年 12月 2日
选择指南 逻辑器件指南 2014 (Rev. AA) 最新英语版本 (Rev.AB) 2014年 11月 17日
选择指南 小尺寸逻辑器件指南 (Rev. E) 最新英语版本 (Rev.G) 2012年 7月 16日
用户指南 LOGIC Pocket Data Book (Rev. B) 2007年 1月 16日
应用手册 CMOS 非缓冲反向器在振荡器电路中的使用 英语版 2006年 3月 23日
应用手册 选择正确的电平转换解决方案 (Rev. A) 英语版 (Rev.A) 2006年 3月 23日
产品概述 Design Summary for WCSP Little Logic (Rev. B) 2004年 11月 4日
应用手册 Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 2004年 7月 8日
用户指南 Signal Switch Data Book (Rev. A) 2003年 11月 14日
用户指南 LVC and LV Low-Voltage CMOS Logic Data Book (Rev. B) 2002年 12月 18日
应用手册 Texas Instruments Little Logic Application Report 2002年 11月 1日
应用手册 TI IBIS File Creation, Validation, and Distribution Processes 2002年 8月 29日
更多文献资料 Standard Linear & Logic for PCs, Servers & Motherboards 2002年 6月 13日
应用手册 16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B) 2002年 5月 22日
应用手册 Power-Up 3-State (PU3S) Circuits in TI Standard Logic Devices 2002年 5月 10日
更多文献资料 STANDARD LINEAR AND LOGIC FOR DVD/VCD PLAYERS 2002年 3月 27日
应用手册 Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices 1997年 12月 1日
应用手册 Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) 1997年 8月 1日
应用手册 CMOS Power Consumption and CPD Calculation (Rev. B) 1997年 6月 1日
应用手册 LVC Characterization Information 1996年 12月 1日
应用手册 Input and Output Characteristics of Digital Integrated Circuits 1996年 10月 1日
应用手册 Live Insertion 1996年 10月 1日
设计指南 Low-Voltage Logic (LVC) Designer's Guide 1996年 9月 1日
应用手册 Understanding Advanced Bus-Interface Products Design Guide 1996年 5月 1日

设计和开发

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仿真模型

SN74LVC16T245 IBIS Model

SCEM492.ZIP (56 KB) - IBIS Model
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封装 引脚 下载
SSOP (DL) 48 查看选项
TSSOP (DGG) 48 查看选项
TVSOP (DGV) 48 查看选项
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
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  • 制造厂地点
  • 封装厂地点

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