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Detailed technical information and Application Scenarios
| PartNumber | Manufactor | Quantity | Availability |
|---|---|---|---|
| 74LS90 | PAN | 125 | Yes |
The 74LS90 is a decade counter integrated circuit (IC) manufactured by Panasonic. Below are the factual specifications for the 74LS90:
1. Function: The 74LS90 is a 4-bit ripple counter that can be configured as a divide-by-2 counter and a divide-by-5 counter. It can also be used as a decade counter or a binary counter.
2. Logic Family: LS (Low-Power Schottky).
3. Operating Voltage: 4.75V to 5.25V (standard 5V operation).
4. Maximum Clock Frequency: Typically 32 MHz.
5. Output Current: High-level output current (I_OH) is -0.4 mA, and low-level output current (I_OL) is 8 mA.
6. Propagation Delay: Typically 15 ns.
7. Package Type: Available in various package types, including DIP (Dual In-line Package) and SOIC (Small Outline Integrated Circuit).
8. Temperature Range: Operating temperature range is typically 0°C to 70°C.
9. Pin Configuration: The 74LS90 has 14 pins, including clock inputs, reset inputs, and output pins.
10. Reset Function: The IC includes master reset (MR1 and MR2) and master set (MS1 and MS2) pins for resetting the counter to a specific state.
11. Applications: Commonly used in frequency division, time delay generation, and digital counting applications.
These specifications are based on the standard 74LS90 IC and may vary slightly depending on the specific version or variant produced by Panasonic.
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