The SN74LVCH8T245 is an 8-bit noninverting bus transceiver that uses two separate configurable power-supply rails. The A port is designed to track V_CCA, which accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track V_CCB, which also 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 5.5-V voltage nodes.

The SN74LVCH8T245 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, the A-port outputs, or place both output ports into a high-impedance state. 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 are always active.

The SN74LVCH8T245 is designed so that the control pins (DIR and OE) are referenced to V_CCA.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

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.

The V_CC isolation feature ensures that if either V_CCA or V_CCB is at GND, then the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE should be tied to V_CCA through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

• Control Inputs (DIR and OE) VIH and VIL Levels are Referenced to VCCA
• Bus Hold on Data Inputs Eliminates the Need for External Pullup and Pulldown Resistors
• VCC Isolation
• Fully Configurable Dual-Rail Design
• Ioff Supports Partial-Power-Down Mode Operation
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22

• Technology Family
• LVC
• Bits (#)
• 8
• 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
• Catalog

SN74LVCH8T245的完整型号有：SN74LVCH8T245DBR、SN74LVCH8T245DGVR、SN74LVCH8T245PW、SN74LVCH8T245PWR、SN74LVCH8T245RHLR，以下是这些产品的关键参数及官网采购报价：

SN74LVCH8T245DBR，工作温度：-40 to 85，封装：SSOP (DB)-24，包装数量MPQ：2000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SN74LVCH8T245DBR的批量USD价格：.692（1000+）

SN74LVCH8T245DGVR，工作温度：-40 to 85，封装：TVSOP (DGV)-24，包装数量MPQ：2000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SN74LVCH8T245DGVR的批量USD价格：.692（1000+）

SN74LVCH8T245PW，工作温度：-40 to 85，封装：TSSOP (PW)-24，包装数量MPQ：60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SN74LVCH8T245PW的批量USD价格：.83（1000+）

SN74LVCH8T245PWR，工作温度：-40 to 85，封装：TSSOP (PW)-24，包装数量MPQ：2000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SN74LVCH8T245PWR的批量USD价格：.692（1000+）

SN74LVCH8T245RHLR，工作温度：-40 to 85，封装：VQFN (RHL)-24，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网SN74LVCH8T245RHLR的批量USD价格：.727（1000+）

14-24-LOGIC-EVM — 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM

该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。

14-24-NL-LOGIC-EVM — Generic 14 through 24 pin non-leaded package evaluation module

Flexible EVM designed to support any logic or translation device that has a BQA, BQB, RGY (14-24 pin), RSV, RJW, or RHL package.

AVCLVCDIRCNTRL-EVM — 适用于方向控制双向转换器件、支持 AVC 和 LVC 的通用 EVM

该通用 EVM 旨在支持 1、2、4 和 8 通道 LVC 和 AVC 方向控制转换器件。它还以相同数量的通道支持总线保持和汽车 Q1 器件。AVC 是低电压转换器件，具有 12mA 的较低驱动强度。LVC 是 1.65 至 5.5V 的较高电压转换器件，具有 32mA 的较高驱动强度。