The 'ABT640 bus transceivers are designed for asynchronous communication between data buses. These devices transmit inverted data from the A bus to the B bus or from the B bus to the A bus, depending on the level at the direction-control (DIR) input. The output-enable () input can be used to disable the device so that the buses are effectively isolated.

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

The SN54ABT640 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT640 is characterized for operation from -40°C to 85°C.

• State-of-the-Art EPIC-IIBTM BiCMOS Design Significantly Reduces Power Dissipation
• ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
• Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
• Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C
• High-Drive Outputs (-32-mA IOH, 64-mA IOL)
• Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), and Plastic (N) and Ceramic (J) DIPs

EPIC-IIB is a trademark of Texas Instruments Incorporated.

• IOL (Max) (mA)
• 64
• IOH (Max) (mA)
• -32
• Technology Family
• ABT
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85

SN74ABT640的完整型号有：SN74ABT640DBR、SN74ABT640DW、SN74ABT640DWR、SN74ABT640N、SN74ABT640NSR、SN74ABT640PW、SN74ABT640PWR，以下是这些产品的关键参数及官网采购报价：

SN74ABT640DBR，工作温度：-40 to 85，封装：SSOP (DB)-20，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SN74ABT640DBR的批量USD价格：.719（1000+）

SN74ABT640DW，工作温度：-40 to 85，封装：SOIC (DW)-20，包装数量MPQ：25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SN74ABT640DW的批量USD价格：.785（1000+）

SN74ABT640DWR，工作温度：-40 to 85，封装：SOIC (DW)-20，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SN74ABT640DWR的批量USD价格：.654（1000+）

SN74ABT640N，工作温度：-40 to 85，封装：PDIP (N)-20，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网SN74ABT640N的批量USD价格：.752（1000+）

SN74ABT640NSR，工作温度：-40 to 85，封装：SO (NS)-20，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SN74ABT640NSR的批量USD价格：.752（1000+）

SN74ABT640PW，工作温度：-40 to 85，封装：TSSOP (PW)-20，包装数量MPQ：70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SN74ABT640PW的批量USD价格：.785（1000+）

SN74ABT640PWR，工作温度：-40 to 85，封装：TSSOP (PW)-20，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SN74ABT640PWR的批量USD价格：.654（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。