STMicroelectronics 74AC240 Octal Buffer/Line Driver
The 74AC240 is a high-speed, octal buffer and line driver designed to interface with bus lines in a bidirectional manner for data transmission. Manufactured by STMicroelectronics, a leader in semiconductor solutions, this integrated circuit is part of the 74AC series, known for its fast performance and compatibility with TTL (Transistor-Transistor Logic) levels.
Equipped with eight non-inverting buffers with 3-state outputs, the 74AC240 is capable of driving heavily loaded bus lines with its 24mA balanced output sink and source capability. This makes the device an excellent choice for driving bus lines or buffering memory address registers.
Key features of the 74AC240 include:
- High-Speed Operation: The device operates at a voltage range of 2V to 6V, providing the necessary speed for high-performance applications.
- Power-Down Protection: Inputs and outputs on the 74AC240 include protection against high static discharge, ensuring the device's reliability and longevity under adverse conditions.
- Low Power Dissipation: With a low ICC of 4µA (max.), the device ensures energy efficiency, which is crucial for battery-operated and power-sensitive applications.
- 3-State Outputs: The octal buffer's 3-state outputs allow for connection to bus lines as they can be set to a high impedance state, effectively disconnecting the output from the circuit.
The 74AC240's package options provide flexibility for hardware design. Available in SOP, SOIC, TSSOP, and DIP packages, it can be easily integrated into various PCB layouts. The device also features symmetrical output impedance, which helps to maintain signal integrity, and a guaranteed output skew to ensure reliable timing.
Whether used in microprocessor systems, as a memory driver, or in general logic applications, the STMicroelectronics 74AC240 offers a robust solution for digital signal buffering and driving. Its performance and features make it a versatile component suitable for a wide range of electronic systems.
