SN54ACT240数据手册TI中文资料规格书

描述 Description

These octal buffers and line drivers are designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.

The ’ACT240 devices are organized as two 4-bit buffers/drivers with separate output-enable (OE)\\ inputs. When (OE)\\ is low, the device passes inverted data from the A inputs to the Y outputs. When (OE)\\ is high, 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 VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

特性 Features

• 4.5-V to 5.5-V VCC Operation
• Inputs Accept Voltages to 5.5 V
• Max tpd of 8.5 ns at 5 V
• Inputs Are TTL Compatible