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SN74ALS161BN from TI,Texas Instruments

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SN74ALS161BN

Manufacturer: TI

Synchronous 4-Bit Binary Counters

Partnumber Manufacturer Quantity Availability
SN74ALS161BN TI 1494 In Stock

Description and Introduction

Synchronous 4-Bit Binary Counters The SN74ALS161BN is a synchronous 4-bit binary counter manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Type:** Synchronous 4-Bit Binary Counter  
- **Counting Method:** Fully Synchronous Operation  
- **Operating Voltage:** 4.5V to 5.5V  
- **High-Speed Operation:** Typical propagation delay of 12ns  
- **Output Type:** Standard  
- **Clock Frequency:** Up to 32MHz  
- **Number of Bits:** 4  
- **Reset Function:** Asynchronous Master Reset (MR)  
- **Load Function:** Parallel Load Capability  
- **Package Type:** PDIP-16 (Plastic Dual In-Line Package)  
- **Operating Temperature Range:** 0°C to 70°C  

### **Descriptions:**  
The SN74ALS161BN is a synchronous presettable binary counter with an asynchronous clear (MR). It features internal carry look-ahead for high-speed counting applications. The counter advances on the rising edge of the clock when enabled.  

### **Features:**  
- **Synchronous Counting:** All flip-flops are clocked simultaneously.  
- **Parallel Load Capability:** Allows loading of any 4-bit binary number.  
- **Asynchronous Master Reset (MR):** Clears all flip-flops independently of the clock.  
- **Carry Output (RCO):** Enables cascading of multiple counters.  
- **Low Power Consumption:** ALS technology ensures efficient power usage.  
- **Wide Operating Voltage Range:** Supports standard TTL levels.  

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

Application Scenarios & Design Considerations

Synchronous 4-Bit Binary Counters

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