74HC540
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The 74HC540 is a high-speed CMOS octal buffer/line driver featuring non-inverting 3-state outputs. It is designed to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. Each of the eight buffers/drivers has its own output enable (OE) input for controlling the output states, making it suitable for driving bus lines or buffering memory address registers in digital systems.
Key Features:
- Eight non-inverting buffers/drivers
- 3-state outputs for bus-oriented applications
- Individual output enable (OE) inputs for each buffer
- High-speed CMOS technology
- Low power consumption
- High noise immunity
- TTL-compatible inputs
- Wide supply voltage range: 2V to 6V
- Supply Voltage (VCC): 2V to 6V
- Input Voltage Range: 0V to VCC
- High-Level Output Voltage (VOH): VCC - 0.1V (min at VCC = 4.5V)
- Low-Level Output Voltage (VOL): 0.1V (max at VCC = 4.5V)
- High-Level Input Voltage (VIH): 70% of VCC (min)
- Low-Level Input Voltage (VIL): 30% of VCC (max)
- Propagation Delay Time: 13 ns (typical at VCC = 5V)
- Operating Temperature Range: -40°C to +85°C
- Package: 20-pin DIP, SOIC, TSSOP
- Bus drivers for data buses in microprocessor systems
- Memory address drivers in digital circuits
- Clock drivers for distributing clock signals
- Data buffers to prevent signal degradation
- Transmitters and receivers in bus-oriented systems
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