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74LS197

4-STAGE PRESETTABLE RIPPLE COUNTERS

Partnumber Manufacturer Quantity Availability
74LS197 24 In Stock

Description and Introduction

4-STAGE PRESETTABLE RIPPLE COUNTERS The 74LS197 is a 4-bit binary counter manufactured by Texas Instruments. It is part of the 74LS series of logic devices, which are based on low-power Schottky (LS) technology. The 74LS197 is designed for use in various counting and timing applications. Key specifications include:

- **Supply Voltage (VCC):** 4.75V to 5.25V
- **Operating Temperature Range:** 0°C to 70°C
- **Maximum Clock Frequency:** 25 MHz
- **Output Current (High):** -0.4 mA
- **Output Current (Low):** 8 mA
- **Power Dissipation:** 45 mW (typical)
- **Logic Family:** LS-TTL
- **Package Type:** 14-pin DIP (Dual In-line Package)
- **Counting Modes:** Asynchronous and synchronous counting
- **Reset Function:** Asynchronous master reset (MR) for clearing the counter

The 74LS197 is commonly used in digital circuits for applications such as frequency division, event counting, and timing control.

Partnumber Manufacturer Quantity Availability
74LS197 Pan 213 In Stock

Description and Introduction

4-STAGE PRESETTABLE RIPPLE COUNTERS The 74LS197 is a 4-bit binary counter manufactured by Panasonic (formerly Panasonic Semiconductor). Here are the key specifications:

1. **Type**: 4-bit binary counter.
2. **Logic Family**: LS-TTL (Low Power Schottky Transistor-Transistor Logic).
3. **Operating Voltage**: 4.75V to 5.25V.
4. **Operating Temperature Range**: 0°C to 70°C.
5. **Package**: Available in 14-pin DIP (Dual In-line Package).
6. **Counting Modes**: Asynchronous and synchronous counting.
7. **Clock Input**: Single clock input for counting.
8. **Reset Function**: Asynchronous master reset (MR) to clear the counter.
9. **Outputs**: 4-bit parallel outputs (Q0, Q1, Q2, Q3).
10. **Propagation Delay**: Typically 15 ns.
11. **Power Dissipation**: Typically 45 mW.
12. **Applications**: Used in frequency division, time delay generation, and digital counting circuits.

These specifications are based on standard datasheet information for the 74LS197 IC.

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