74HCT240
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The 74HCT240 is a high-speed CMOS octal buffer/line driver with inverting 3-state outputs. It features eight inverting buffers/drivers designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. This device has two output enable (OE) inputs, each controlling four outputs, providing the capability to drive bus lines or buffer memory address registers. The 3-state outputs allow for direct connection to bus lines in bus-organized systems.
Key Features:
- Eight inverting buffers/drivers
- 3-state outputs for bus-oriented applications
- Wide supply voltage range: 4.5V to 5.5V
- High-speed CMOS technology
- Low power consumption
- High noise immunity
- TTL-compatible inputs
- Two output enable inputs for flexible control
- Supply Voltage (VCC): 4.5V to 5.5V
- 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): 2.0V (min)
- Low-Level Input Voltage (VIL): 0.8V (max)
- Propagation Delay Time: 12 ns (typical at VCC = 5V)
- Operating Temperature Range: -40°C to +85°C
- Package: 20-pin DIP, SOIC, TSSOP
- Bus Drivers: Used to drive data buses in microprocessor systems.
- Memory Address Drivers: Suitable for driving memory address registers.
- Clock Drivers: Ideal for distributing clock signals in digital circuits.
- Data Buffers: Used as data buffers in digital systems to prevent signal degradation.
- Transmitters/Receivers: Suitable for use in bus-oriented systems as transmitters/receivers.
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