SN74CB3T1G125 单路 FET 2.5V 和 3.3V 低电压总线开关,带可耐受 5V 电压的电平转换器 | 德州仪器 TI.com.cn

SN74CB3T1G125
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单路 FET 2.5V 和 3.3V 低电压总线开关,带可耐受 5V 电压的电平转换器

单路 FET 2.5V 和 3.3V 低电压总线开关,带可耐受 5V 电压的电平转换器 - SN74CB3T1G125
数据表
SN74CB3T1G125 数据表   (英文內容)
 

描述

The SN74CB3T1G125 is a high-speed TTL-compatible FET bus switch with low ON-state resistance (ron), allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data I/O ports by providing voltage translation that tracks VCC. The SN74CB3T1G125 supports systems using 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels.

The SN74CB3T1G125 is a 1-bit bus switch with a single ouput-enable (OE) input. When OE is low, the bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the bus switch is OFF, and a high-impedance state exists between the A and B ports.

This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off.

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.

特性

  • Output Voltage Translation Tracks VCC
  • Supports Mixed-Mode Signal Operation on All Data I/O Ports
    • 5-V Input Down to 3.3-V Output Level Shift With 3.3-V VCC
    • 5-V/3.3-V Input Down to 2.5-V Output Level Shift With 2.5-V VCC
  • 5-V-Tolerant I/Os, With Device Powered Up or Powered Down
  • Bidirectional Data Flow With Near-Zero Propagation Delay
  • Low ON-State Resistance (ron) Characteristics (ron = 5 Typ)
  • Low Input/Output Capacitance Minimizes Loading (Cio(OFF) = 5 pF Typ)
  • Data and Control Inputs Provide Undershoot Clamp Diodes
  • Low Power Consumption (ICC = 20 µA Max)
  • VCC Operating Range From 2.3 V to 3.6 V
  • Data I/Os Support 0- to 5-V Signaling Levels (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V)
  • Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS Outputs
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Performance Tested Per JESD 22
    • 2000-V Human-Body Model (A114-B, Class II)
    • 1000-V Charged-Device Model (C101)
  • Supports Digital Applications: Level Translation, USB Interface, Bus Isolation
  • Ideal for Low-Power Portable Equipment

参数

与其它产品相比 模拟开关/多路复用器 邮件 下载到电子表格中
Part number 立即下单 Configuration Number of channels (#) Ron (Typ) (Ohms) Bandwidth (MHz) Rating Operating temperature range (C) Package Group Input/output continuous current (Max) (mA) Features ON-state leakage current (Max) (µA) CON (Typ) (pF)
SN74CB3T1G125 立即下单 1:1 SPST     1     5       Catalog     -40 to 85     SC70 | 5
SOT-23 | 5    
128     Powered-off protection
Signal path translation    
20     12    
SN74CBT1G125 立即下单 1:1 SPST     1     5       Catalog     -40 to 85     SC70 | 5
SOT-23 | 5    
128       1      
SN74CBTLV1G125 无样片 1:1 SPST     1     5     200     Catalog     -40 to 85     SC70 | 5
SOT-23 | 5    
128     Powered-off protection     1      
SN74CBTLV1G125-Q1 无样片 1:1 SPST     1     5     200     Automotive     -40 to 125     SOT-23 | 5     128     Powered-off protection     1