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HD74LS161AFPEL from HITACHI

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HD74LS161AFPEL

Manufacturer: HITACHI

Synchronous 4-bit Binary Counter (direct clear)

Partnumber Manufacturer Quantity Availability
HD74LS161AFPEL HITACHI 2850 In Stock

Description and Introduction

Synchronous 4-bit Binary Counter (direct clear) The HD74LS161AFPEL is a 4-bit synchronous binary counter manufactured by HITACHI. Here are its key specifications:

1. **Logic Family**: LS-TTL  
2. **Function**: 4-bit synchronous binary counter  
3. **Counting Mode**: Synchronous  
4. **Reset**: Asynchronous clear  
5. **Load**: Synchronous parallel load  
6. **Clock Input**: Positive-edge triggered  
7. **Operating Voltage**: 4.75V to 5.25V  
8. **Maximum Clock Frequency**: 25 MHz (typical)  
9. **Propagation Delay**: 20 ns (typical)  
10. **Package**: 16-pin DIP (Plastic)  
11. **Operating Temperature Range**: 0°C to +70°C  

This information is based on the manufacturer's datasheet.

Partnumber Manufacturer Quantity Availability
HD74LS161AFPEL HIT 2000 In Stock

Description and Introduction

Synchronous 4-bit Binary Counter (direct clear) The HD74LS161AFPEL is a 4-bit synchronous binary counter manufactured by Hitachi (HIT). Here are its key specifications:

- **Type**: Synchronous presettable binary counter
- **Logic Family**: LS-TTL (Low-power Schottky TTL)
- **Number of Bits**: 4-bit
- **Counting Mode**: Binary (up-counter)
- **Clock Input**: Synchronous (positive-edge triggered)
- **Preset Inputs**: Parallel load capability
- **Clear Input**: Asynchronous master reset
- **Operating Voltage**: 4.75V to 5.25V (standard 5V TTL)
- **Maximum Clock Frequency**: Typically 30 MHz
- **Power Dissipation**: Approximately 45 mW (typical)
- **Package**: 16-pin plastic DIP (Dual In-line Package)
- **Operating Temperature Range**: 0°C to +70°C (commercial grade)
- **Output Drive Capability**: Standard TTL (10 LS-TTL loads)

This counter features carry look-ahead for cascading and is commonly used in frequency division and timing applications.

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