SN74HC244N (74HC244) Logic Chip
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Description:
The SN74HC244N is an octal buffer and line driver IC, designed for general-purpose logic level shifting and signal buffering applications in digital systems. It features 3-state outputs which enable multiple devices to share the same bus, and it is capable of driving outputs up to 15 pF capacitance. This IC operates at high speed while consuming low power, making it suitable for various digital and microcontroller interfacing tasks.
Key Features:
- Octal buffer and line driver
- 3-state outputs for bus-oriented applications
- High-speed CMOS technology
- Low power consumption
- Wide operating voltage range: 2V to 6V
- Typical propagation delay: 10 ns at VCC = 5V, CL = 50 pF
- High output drive capability: ±6 mA at VCC = 4.5V
- Package Type: 20-pin DIP (Dual In-line Package)
- Supply Voltage (VCC): 2V to 6V
- Input Voltage (VIN): 0V to VCC
- Output Voltage (VOUT): 0V to VCC
- Input High Voltage (VIH): 3.15V (min) at VCC = 6V
- Input Low Voltage (VIL): 1.35V (max) at VCC = 6V
- Output Current (IO): ±6 mA (max)
- Quiescent Supply Current (ICC): 8 µA (max)
- Operating Temperature Range: -40°C to +85°C
- Digital data transmission
- Microcontroller interfacing
- Address bus buffering
- Signal level shifting
- Clock distribution
Technical Specifications:
- Logic Family: CMOS
- Number of Channels: 3
- Switch Configuration: Single-Pole Double-Throw (SPDT)
- Supply Voltage Range: 3V to 15V
- “ON” Resistance (R_ON): 125Ω typical at V_DD = 10V
- “OFF” Leakage Current (I_OFF): ±100pA typical at V_DD = 10V
- Control Input Voltage (V_IH): 0.7 V_DD min, 0.3 V_DD max
- Maximum Operating Frequency: 40 MHz at V_DD = 10V
Applications:
- Signal routing and switching
- Analog and digital multiplexing
- Audio and video signal processing
- Data acquisition systems
- Test equipment