Catalog > Semiconductors > Integrated Circuits IC IC 74HC540M1R Octal Bus Buffer with 3-State Outputs (Inverted) 12.83 ZAR inc for 1 Each 888 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications 8-bit buffer and line driver with inverted outputs. Outputs: 3-state outputs controlled by two active-LOW output enable pins (OE1 and OE2). Voltage Range: Operates from 2.0 V up to 6.0 V. Compatibility: Pin-compatible with low-power Schottky TTL (LSTTL) logic.