STMicroelectronics has developed a wide voltage-range single-gate inverter that has protection against electrostatic discharge, latch-up and over-voltages to provide maximum flexibility for designers working on space-constrained circuits.
ST has used an advanced sub-micron process to make the 74LX1G04 to let the device work over a wide voltage range, from 1.65V to 5.5V. Although it can work at voltages down to 1.65V, with data retention as low as 1.2V, the inverter can withstand over-voltages up to 7V, an important consideration in mixed-voltage systems, giving designers more choice over the ICs they can use in their portable designs. The internal circuit is made up of three stages, including buffered outputs to provide low-noise operation and a stable output.
The 74LX1G04 is designed for low-power operation, drawing just 10uA when in a quiescent state. It supports a power-down mode in which both the inputs and outputs are put into a high-impedance state, providing full protection. All inputs and outputs are protected against electrostatic discharge.
To ease design with the inverter, the internal circuit has been carefully designed to assure propagation-delay and output-impedance symmetry for both rising and falling pulse edges. The maximum propagation delay through the gate at Vcc=3V is 4.2ns, allowing use in high-speed ASIC-to-ASIC communications and memory interfacing applications. At 3V, the 74LX1G04 can source 24mA of current, so that it can be used to drive long transmission lines across circuit boards.
To minimize space on the board, the 74LX1G04 is packaged in a five-pin SOT323. For less space-constrained designs, a version packaged in the slightly larger SOT23-5L is available.
