1 Features
• Operating voltage range of 4.5V to 5.5V
• High-current outputs drive up to 15 LSTTL loads
• Low power consumption, 80μA max ICC
• Typical tpd = 12 ns
• ±6mA output drive at 5V
• Low input current of 1μA max
• Inputs are TTL-voltage compatible
• 3-state outputs drive bus lines or buffer memory
address registers

2 Description
These octal buffers and line drivers are designed
specifically to improve both the performance and
density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and transmitters.
The ’HCT240 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.