描述 Description

The 74LVC240A is an octal inverting buffer/line driver with 3-state outputs. The 3-state outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Schmitt trigger action at all inputs makes the circuit highly tolerant of slower input rise and fall times.
Inputs can be driven from either 3.3 V or 5 V devices. When disabled, up to 5.5 V can be applied to the outputs. These features allow the use of these devices as translators in mixed 3.3 V or 5 V applications.
The 74LVC240A is functionally identical to the 74LVC244A except that the 244 has non-inverting outputs.

特性 Features

? 5 V tolerant inputs/outputs for interfacing with 5 V logic
? Supply voltage range from 1.2 to 3.6 V
? CMOS low power consumption
? Direct interface with TTL levels
? High-impedance when VCC = 0 V
? Complies with JEDEC standard:
? JESD8-7A (1.65 V to 1.95 V)
? JESD8-5A (2.3 V to 2.7 V)
? JESD8-C/JESD36 (2.7 V to 3.6 V)

? ESD protection:
? HBM JESD22-A114F exceeds 2000 V
? MM JESD22-A115B exceeds 200 V
? CDM JESD22-C101E exceeds 1000 V

? Specified from -40 °C to +85 °C and -40 °C to +125 °C