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SN74AS161N from TI,Texas Instruments

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SN74AS161N

Manufacturer: TI

Synchronous 4-Bit Binary Counters

Partnumber Manufacturer Quantity Availability
SN74AS161N TI 222 In Stock

Description and Introduction

Synchronous 4-Bit Binary Counters The SN74AS161N is a 4-bit synchronous binary counter manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Type:** Synchronous Binary Counter  
- **Number of Bits:** 4  
- **Counting Sequence:** Up  
- **Trigger Type:** Positive Edge  
- **Supply Voltage (VCC):** 4.5V to 5.5V  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package / Case:** PDIP-16  
- **Propagation Delay Time:** 12 ns (typical)  
- **Output Type:** Standard  
- **Features:**  
  - Synchronous operation  
  - Internal carry look-ahead for fast counting  
  - Fully programmable (parallel load)  
  - Asynchronous clear  
  - TTL-compatible inputs  

### **Descriptions:**  
The SN74AS161N is a high-speed 4-bit synchronous counter with direct clear and parallel load capabilities. It operates synchronously with the clock signal, ensuring predictable timing. The counter advances on the rising edge of the clock when enabled.  

### **Features:**  
- **Synchronous Counting:** Changes state in sync with the clock signal.  
- **Parallel Load Capability:** Allows preset loading of data.  
- **Asynchronous Clear:** Resets the counter independently of the clock.  
- **Carry Output:** Enables cascading of multiple counters.  
- **TTL-Compatible:** Works with standard TTL logic levels.  

This device is commonly used in digital counting applications, frequency division, and sequential logic circuits.

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