74HC540; 74HCT540 Octal buffer/line driver; 3-state; inverting General description The 74HC540; 74HCT540 is an 8-bit inverting buffer/line driver with 3-state outputs. The device features two output enables (OE1 and OE2). A HIGH on OEn causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. Features and benefits - Inverting outputs - Complies with JEDEC standard no. 7A - Input levels: - For 74HC540: CMOS level - For 74HCT540: TTL level - ESD protection: - HBM JESD22-A114F exceeds 2000 V - MM JESD22-A115-A exceeds 200 V - Multiple package options - Specified from -40 °C to +85 °C and from -40 °C to +125 °C https://elecena.pl/product/19534486/74hc540d-octal-buffer-line-driver-3-state-inverting-so-20 2021-09-26 https://elecena.pl/product/19534486/74hc540d-octal-buffer-line-driver-3-state-inverting-so-20 2022-10-06 https://elecena.pl/product/19534486/74hc540d-octal-buffer-line-driver-3-state-inverting-so-20 2022-10-21 https://elecena.pl/product/19534486/74hc540d-octal-buffer-line-driver-3-state-inverting-so-20 2023-01-17 https://elecena.pl/product/19534486/74hc540d-octal-buffer-line-driver-3-state-inverting-so-20 2023-05-29 https://elecena.pl/product/19534486/74hc540d-octal-buffer-line-driver-3-state-inverting-so-20 2023-09-06 https://elecena.pl/product/19534486/74hc540d-octal-buffer-line-driver-3-state-inverting-so-20 2025-12-12 https://elecena.pl/product/19534486/74hc540d-octal-buffer-line-driver-3-state-inverting-so-20 2026-01-20