SN54HCT540中文资料具有 TTL 兼容型 CMOS 输入和三态输出的军用 8 通道 4.5V 至 5.5V 反相器数据手册TI规格书

描述 Description

These octal buffers and line drivers are designed to have the performance of the ’HCT240 devices and a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly facilitates printed circuit board layout.

The 3-state control gate is a 2-input NOR. If either output-enable (OE1\\ or OE2\\) input is high, all eight outputs are in the high-impedance state. The ’HCT540 devices provide inverted data at the outputs.

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

• Operating Voltage Range of 4.5 V to 5.5 V
• Low Power Consumption, 80-µA Max ICC
• Typical tpd = 12 ns
• ±6-mA Output Drive at 5 V
• Low Input Current of 1 µA Max
• Inputs Are TTL-Voltage Compatible
• High-Current 3-State Outputs Interface Directly With System Bus or Can Drive Up To 15 LSTTL Loads
• Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs)