Description
The SN74HCT244 is an octal buffer and line driver designed to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented transmitters/receivers. It contains eight independent non-inverting buffers, organized into two 4-bit groups. Each group is controlled by a separate active-LOW Output Enable (OE-bar) input.
The “HCT” designation indicates that this device features TTL-compatible input threshold levels, making it ideal for interfacing 5V TTL systems with CMOS-based logic. When the OE-bar pin is driven LOW, the buffer passes data from input to output. When driven HIGH, the outputs enter a high-impedance (high-Z) state, preventing signal contention on shared buses.
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) inputs (one per 4-bit group)
- TTL-compatible input levels (HCT series)
- High-speed CMOS (HCT) technology
- Compact SOIC-20 surface-mount package
Benefits
- Strong output drive capability for capacitive bus loading
- Separate control groups allow for flexible bus-switching architectures
- Direct TTL compatibility simplifies system-level integration
- High noise immunity provides reliable operation in noisy digital environments
Applications
- Data Bus Buffering and Driving
- Memory Address Line Drivers
- Clock Distribution Buffers
- Microprocessor System Expansion
- Peripheral Bus Interface Logic
Package Includes
- 1 x SN74HCT244DWR Octal Buffer/Line Driver IC (SOIC-20 SMD)
Specifications
| Parameter | Specification |
|---|---|
| Product Name | SN74HCT244DWR |
| Device Type | Octal 3-State Buffer / Line Driver |
| Logic Family | 74HCT (TTL-Compatible 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 |
