The SN74LVC1T45-Q1 device is a single-bit, noninverting bus transceiver that uses two separate configurable power supply rails. The A-port is designed to track V_CCA. V_CCA accepts any supply voltage from 1.65 V to 5.5 V. The B-port is designed to track V_CCB. V_CCB 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 SN74LVC1T45-Q1 device is a single-bit, non-inverting level translator. The fully configurable dual-rail design allows each port to overate over the full 1.65-V to 5.5-V power supply range. It is ideal for applications that need a wide bidirectional translation range.

The SN74LVC1T45-Q1 is designed so that the DIR input is powered by V_CCA.

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

The V_CC isolation feature ensures that if either V_CC input is at GND, then both ports are in the high-impedance state.

• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
  • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
  • Device HBM ESD Classification Level H2
  • Device CDM ESD Classification Level C3B
• Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-V Power-Supply Range
• VCC Isolation Feature – If Either VCC Input Is at GND, Both Ports Are in the High-Impedance State
• DIR Input Circuit Referenced to VCCA
• ±24-mA Output Drive at 3.3 V
• Ioff Supports Partial-Power-Down Mode Operation
• Maximum Data Rates
  • 420 Mbps (3.3-V to 5-V Translation)
  • 210 Mbps (Translate to 3.3 V)
  • 140 Mbps (Translate to 2.5 V)
  • 75 Mbps (Translate to 1.8 V)

• Technology Family
• LVC
• Applications
• GPIO
• Bits (#)
• 1
• High input voltage (Min) (Vih)
• 1.08
• High input voltage (Max) (Vih)
• 5.5
• Vout (Min) (V)
• 1.65
• Vout (Max) (V)
• 5.5
• IOH (Max) (mA)
• -32
• IOL (Max) (mA)
• 32
• Rating
• Automotive

SN74LVC1T45-Q1的完整型号有：SN74LVC1T45QDCKRQ1，以下是这些产品的关键参数及官网采购报价：

SN74LVC1T45QDCKRQ1，工作温度：-40 to 125，封装：SC70 (DCK)-6，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74LVC1T45QDCKRQ1的批量USD价格：.212（1000+）

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