The 74LS245 is an octal bus transceiver IC designed for asynchronous two-way data communication between data buses. It is housed in a SOIC-20 surface-mount device (SMD) package, making it suitable for high-density circuit board layouts. Here’s a detailed description of the product:
Key Features:
- Type: Octal Bus Transceiver
- Package: SOIC-20 (Small Outline Integrated Circuit)
- Logic Family: 74LS (Low Power Schottky)
- Operating Voltage: 4.75V to 5.25V
- Direction Control: Allows data transmission in both directions
- Three-State Outputs: Enables connection to a common bus
- Low Power Consumption: Schottky technology for low static power consumption
- High-Speed Operation: Fast propagation delay
Applications:
- Bus Interface: Ideal for interfacing between data buses
- Data Communication: Suitable for asynchronous two-way data communication
- Memory Addressing: Used in memory addressing and multiplexing
- Digital Systems: Useful in various digital systems requiring bidirectional data transfer
- Microprocessor Interfacing: Commonly used in microprocessor and microcontroller systems
Pin Configuration:
- Pin 1 (DIR): Direction control input
- Pin 2 (A1): Data input/output A1
- Pin 3 (A2): Data input/output A2
- Pin 4 (A3): Data input/output A3
- Pin 5 (A4): Data input/output A4
- Pin 6 (A5): Data input/output A5
- Pin 7 (A6): Data input/output A6
- Pin 8 (A7): Data input/output A7
- Pin 9 (A8): Data input/output A8
- Pin 10 (GND): Ground
- Pin 11 (B8): Data input/output B8
- Pin 12 (B7): Data input/output B7
- Pin 13 (B6): Data input/output B6
- Pin 14 (B5): Data input/output B5
- Pin 15 (B4): Data input/output B4
- Pin 16 (B3): Data input/output B3
- Pin 17 (B2): Data input/output B2
- Pin 18 (B1): Data input/output B1
- Pin 19 (/OE): Output enable (active low)
- Pin 20 (VCC): Supply voltage
Electrical Characteristics:
- Supply Voltage (Vcc): 4.75V to 5.25V
- Input Voltage (Vin): 0V to Vcc
- Output Voltage (Vout): 0V to Vcc
- Low Input Current (Iin): ±0.1μA max
- Low Output Current (Iout): ±24mA max
- Propagation Delay: Typically 15ns
- Power Consumption: Low power consumption due to Schottky technology
Note: Product images are for illustrative purposes only and may differ from the actual product.