74LS244 Octal 3 State Buffer/Line Driver IC (74244) DIP 20 Package

74LS244 Octal 3 State Buffer/Line Driver IC (74244) DIP 20 Package

The 74LS244 is an Octal 3-State Buffer/Line Driver IC from the 74LS (Low Power Schottky TTL) logic family.
It contains eight non-inverting buffers arranged as two groups of four buffers, each with its own enable input.

The IC provides high current drive capability, low power consumption, and three-state (tri-state) outputs, allowing multiple devices to share a common data bus without conflict.
When the enable input is LOW, the corresponding outputs are active; when HIGH, the outputs go into high-impedance (Hi-Z) state, effectively disconnecting from the bus.

This makes the 74LS244 ideal for bus driving, buffering, and isolation in microprocessor or memory-based digital systems.

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Features:-

• • 3-STATE outputs drive bus lines directly
• • PNP inputs reduce DC loading on bus lines
• • Hysteresis at data inputs improves noise margins
• • Typical IOL (sink current) 24 mA
• • Typical IOH (source current) ?15 mA
• • Typical propagation delay times Inverting 10.5 ns Noninverting 12 ns
• • Typical enable/disable time 18 ns
• • Typical power dissipation (enabled) Inverting 130 mW Noninverting 135 mW

Specifications:-

Applications

• Bus driver or buffer in microprocessor systems
• Address or data line buffering
• Memory or I/O interface logic
• Line driving and signal isolation
• Logic level shifting
• Multiprocessor data communication buses
• High-speed data transfer systems

74ls244-ic-datasheet