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SN74F161A from TI,Texas Instruments

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SN74F161A

Manufacturer: TI

Synchronous 4-Bit Binary Counter

Partnumber Manufacturer Quantity Availability
SN74F161A TI 50 In Stock

Description and Introduction

Synchronous 4-Bit Binary Counter The SN74F161A is a synchronous 4-bit binary counter manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Supply Voltage Range (VCC):** 4.5V to 5.5V  
- **Operating Temperature Range:** 0°C to 70°C  
- **High-Level Input Voltage (VIH):** 2V (min)  
- **Low-Level Input Voltage (VIL):** 0.8V (max)  
- **High-Level Output Current (IOH):** -1 mA  
- **Low-Level Output Current (IOL):** 20 mA  
- **Propagation Delay (tpd):** 9 ns (max) at 5V  
- **Power Dissipation (PD):** 500 mW (max)  

### **Description:**  
The SN74F161A is a synchronous presettable 4-bit binary counter with an internal carry look-ahead for high-speed counting applications. It features parallel load capability, synchronous counting, and asynchronous master reset functionality. The counter advances on the low-to-high transition of the clock (CLK) input when enabled.

### **Features:**  
- **Synchronous Counting:** Operates in sync with the clock signal.  
- **Parallel Load Capability:** Allows presetting the counter via parallel inputs.  
- **Asynchronous Master Reset (CLR):** Clears all flip-flops independently of the clock.  
- **Carry Look-Ahead:** Enables high-speed cascading of multiple counters.  
- **Fully Buffered Outputs:** Ensures minimal loading effects.  
- **TTL-Compatible Inputs/Outputs:** Works with standard TTL logic levels.  
- **16-Pin Package:** Available in PDIP, SOIC, and other package options.  

This information is strictly factual and derived from the manufacturer's datasheet.

Application Scenarios & Design Considerations

Synchronous 4-Bit Binary Counter

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