Description
The 74HC244 is a high-speed, silicon-gate CMOS octal buffer and line driver featuring 3-state outputs. It is designed specifically for driving high-capacitance loads, such as large data buses, in microprocessor and computer applications. The device contains eight non-inverting buffers organized into two groups of four. Each group is controlled by its own active-LOW Output Enable (OE-bar) input.
When the Output Enable is LOW, the device functions as a standard non-inverting buffer. When the Output Enable is HIGH, the outputs enter a high-impedance (high-Z) state, allowing other devices on the bus to transmit data without electrical interference.
Note: Product images are shown for reference only. The actual product may vary in appearance, manufacturer marking, or logo depending on stock availability.
Features
- Octal (8) non-inverting buffers
- 3-state outputs for bus-sharing applications
- Two separate active-LOW Output Enable (OE-bar) controls (one for each 4-bit group)
- High-speed CMOS (HC) technology
- Wide operating voltage range (2V to 6V)
- Compact SOIC-20 surface-mount package
Benefits
- High drive current capability makes it ideal for long signal traces
- Flexible grouping allows for independent control of two separate 4-bit buses
- High-impedance state effectively eliminates bus contention
- Low power consumption suitable for energy-efficient digital systems
Applications
- Data Bus Drivers and Buffers
- Memory Address Line Driving
- Microprocessor System Bus Expansion
- Peripheral Interface Management
- General Purpose High-Fan-out Logic Driving
Package Includes
- 1 x 74HC244D,653 Octal Buffer/Line Driver IC (SOIC-20 SMD)
Specifications
| Parameter | Specification |
|---|---|
| Product Name | 74HC244D,653 |
| Device Type | Octal 3-State Buffer/Line Driver |
| Logic Family | 74HC (High-Speed CMOS) |
| Package / Case | SOIC-20 (SMD) |
| Mounting Type | Surface Mount (SMD/SMT) |
| Shipping Weight | 0.001 kg |
| Shipping Dimensions | 4 x 4 x 1 cm |
