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The SN74HCT244 is an octal buffer and line driver manufactured by NXP.

Specifications:

• Logic Type: Octal Buffer/Line Driver (3-State)
• Technology: HCT (High-Speed CMOS, TTL-Compatible)
• Number of Channels: 8
• Output Type: 3-State
• Supply Voltage Range (VCC): 4.5V to 5.5V
• Input Voltage Range (VI): 0V to VCC
• Output Current (IO): ±6mA
• Propagation Delay (tpd): 13ns (typical at 5V)
• Operating Temperature Range: -40°C to +85°C
• Package Options: SO20, TSSOP20, DIP20

Descriptions:

The SN74HCT244 is designed for bus-oriented applications, providing high-speed, low-power buffering. It features two active-low output enables (OE1 and OE2) that control four buffers each, allowing for flexible bus management. The device is TTL-compatible, making it suitable for interfacing between CMOS and TTL logic levels.

Features:

• 3-State Outputs: Allow direct connection to a bus-organized system.
• TTL-Compatible Inputs: Can be driven by TTL or 5V CMOS signals.
• Balanced Propagation Delays: Ensures consistent timing performance.
• Wide Operating Voltage Range: Supports 4.5V to 5.5V operation.
• Low Power Consumption: Typical ICC of 80µA.
• High Noise Immunity: CMOS technology ensures robust performance.
• ESD Protection: Exceeds 2000V (HBM) and 200V (MM).

This device is commonly used in digital systems for signal buffering, bus driving, and level translation.