The SN54BCT540 and SN74BCT540A octal buffers and line drivers are ideal for driving bus lines or buffer memory-address registers. The devices feature inputs and outputs on opposite sides of the package to facilitate printed circuit board layout.

The 3-state control gate is a 2-input AND gate with active-low inputs so that if either output-enable (OE1\ or OE2\) input is high, all corresponding 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_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

• Operating Voltage Range of 4.5 V to 5.5 V
• State-of-the-Art BiCMOS Design Significantly Reduces ICCZ
• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
• P-N-P Inputs Reduce DC Loading
• Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs)
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 200-V Machine Model (A115-A)
  • 1000-V Charged-Device Model (C101)

• Technology Family
• BCT
• Supply voltage (Min) (V)
• 4.5
• Supply voltage (Max) (V)
• 5.5
• Number of channels (#)
• 8
• IOL (Max) (mA)
• 64
• IOH (Max) (mA)
• -15
• ICC (Max) (uA)
• 21000
• Input type
• Bipolar
• Output type
• 3-State
• Features
• Very high speed (tpd 5-10ns), Over-voltage tolerant inputs
• Rating
• Catalog

SN74BCT540A的完整型号有：SN74BCT540ADW、SN74BCT540AN、SN74BCT540ANSR，以下是这些产品的关键参数及官网采购报价：

SN74BCT540ADW，工作温度：0 to 70，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SN74BCT540ADW的批量USD价格：1.755（1000+）

SN74BCT540AN，工作温度：0 to 70，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SN74BCT540AN的批量USD价格：2.018（1000+）

SN74BCT540ANSR，工作温度：0 to 70，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SN74BCT540ANSR的批量USD价格：1.931（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。