SN74HCT540DWR

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.

Applications

• Signal buffering and line driving
• System bus interface applications

Key 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)