74LS243N, Quadruple Bus Transceiver, DIP-14

The 74LS243N is a quadruple bus transceiver designed for asynchronous two-way communication between data buses. It can be used to drive terminated lines down to 133Ω, making it suitable for various bus interface applications. The device features PNP inputs to reduce DC loading and hysteresis at data inputs to improve noise margin. With 3-state outputs, it allows for efficient bus sharing among multiple devices.

• Asynchronous Two-Way Communication – Facilitates bidirectional data transfer between buses without the need for synchronized clocks.
• Hysteresis at Inputs – Improves noise margin, enhancing signal integrity in noisy environments.
• PNP Inputs – Reduce DC loading on bus lines, minimizing power consumption.
• 3-State Outputs – Allows multiple devices to share the same data bus without interference.
• Standard TTL Compatibility – Compatible with standard TTL logic levels, ensuring easy integration into existing systems.
• Robust 14-Pin DIP Package – Encased in a standard 14-pin Dual In-Line Package for straightforward PCB mounting.