AED 8.30
1
Description
The 74LS85 is an integrated circuit designed as a 4-bit magnitude comparator, offering efficient binary data comparison. With a compact size and available in multiple packages, it caters to the diverse requirements of various circuits. The IC facilitates the comparison of two 4-bit binary data sets, providing output in the form of HIGH and LOW states. Notably, it boasts low power consumption and outputs in TTL form, ensuring compatibility with other TTL-based devices and microcontrollers.
Specifications:
- Voltage Range: 4.75 to 5.25
- Input Voltage (HIGH state): Minimum 2
- Input Voltage (LOW state): Maximum 0.8
- Output Current (HIGH state): -0.4mA
- Output Current (LOW state): 8mA
- Operating Temperature: 0 to 70 degrees
- Internal Protection: Against clamp voltages with a range of about -1.5V
Key Features:
- Simultaneous 4-bit Comparison: Capable of comparing 4-bit binary data simultaneously.
- Expandability: Can be expanded to compare data sets larger than 4-bits.
- TTL Output: Outputs in TTL form, ensuring compatibility with other TTL devices and microcontrollers.
- Package Options: Available in two packages - SOIC and PDIP.
- Internal Protection: Equipped with internal protection against clamp voltages.
Pinout:
Pin | Detail |
---|---|
1 | B3 - Input of data B |
2 | IA < B |
3 | IA = B |
4 | IA > B |
5 | OA > B - Output |
6 | OA = B - Output |
7 | OA < B - Output |
8 | GND - Ground |
9 | B0 - LSB of input data B |
10 | A0 - LSB of input data A |
11 | B1 - Second LSB of data B |
12 | A1 - Second LSB of data A |
13 | A2 - Second bit of data A |
14 | B2 - Second bit of data B |
15 | A3 - MSB of data A |
16 | VCC - Power input |