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HD74HC191 from HITACHI

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HD74HC191

Manufacturer: HITACHI

Synchronous Up/Down Decade,4-bit Binary Counter(Single Clock Line)

Partnumber Manufacturer Quantity Availability
HD74HC191 HITACHI 66 In Stock

Description and Introduction

Synchronous Up/Down Decade,4-bit Binary Counter(Single Clock Line) The HD74HC191 is a high-speed CMOS 4-bit synchronous up/down counter manufactured by HITACHI.  

**Key Specifications:**  
- **Logic Family:** HC (High-Speed CMOS)  
- **Supply Voltage Range:** 2V to 6V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Counting Modes:** Synchronous up/down counting  
- **Clock Input:** Positive-edge triggered  
- **Output Type:** Standard CMOS  
- **Package Options:** DIP (Dual In-line Package), SOP (Small Outline Package)  
- **Propagation Delay:** Typically 13 ns at 5V supply  
- **Power Consumption:** Low power dissipation  

**Features:**  
- Synchronous counting operation  
- Asynchronous parallel load capability  
- Carry and ripple clock outputs for cascading  
- TTL-compatible inputs  

**Applications:**  
- Digital counters  
- Frequency dividers  
- Industrial control systems  

This information is based on the manufacturer's datasheet for the HD74HC191.

Partnumber Manufacturer Quantity Availability
HD74HC191 HIT 2602 In Stock

Description and Introduction

Synchronous Up/Down Decade,4-bit Binary Counter(Single Clock Line) The HD74HC191 is a high-speed CMOS 4-bit synchronous up/down counter manufactured by Hitachi (HIT). Here are its key specifications:

- **Logic Family**: HC (High-Speed CMOS)  
- **Supply Voltage Range**: 2V to 6V  
- **Operating Temperature Range**: -40°C to +85°C  
- **Counting Modes**: Synchronous up/down counting  
- **Clock Input**: Positive-edge triggered  
- **Output Type**: Standard (non-inverting)  
- **Maximum Clock Frequency**: Typically 50 MHz at 5V  
- **Low Power Consumption**: 4 μA (max) at 5V  
- **Package Options**: DIP-16, SOP-16  
- **Load/Count Enable Inputs**: Yes (asynchronous parallel load)  
- **Ripple Clock Output**: Provided for cascading  
- **Compliance**: Meets JEDEC standard  

This information is based solely on the manufacturer's datasheet.

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