Overview
The M74HC161B1R is a synchronous presettable 4-bit binary counter manufactured by STMicroelectronics. Although this component is currently obsolete and no longer in production, it remains relevant for legacy systems and educational purposes. This counter is part of the 74HC series, known for its high-speed CMOS logic.
Key Specifications
| Parameter | Value |
|---|---|
| Function | Synchronous Presettable 4-Bit Binary Counter |
| Logic Family | 74HC |
| Number of Bits | 4 |
| Counting Mode | Synchronous |
| Clear Input | Asynchronous |
| Package Type | Variety (e.g., SO-16, DIP-16) |
| Operating Temperature | -40°C to 125°C |
| Supply Voltage | 2V to 6V |
| Propagation Delay | Typically around 24 ns |
Key Features
- Synchronous counting operation
- Asynchronous clear input
- Presettable via parallel load inputs
- High-speed CMOS logic with low power consumption
- Wide operating temperature range (-40°C to 125°C)
- Compatible with TTL logic levels
Applications
The M74HC161B1R is suitable for various digital circuit applications, including:
- Digital counters and timers
- Sequential logic circuits
- Microprocessor and microcontroller systems
- Automotive and industrial control systems
- Educational and development boards
Q & A
- What is the function of the M74HC161B1R? The M74HC161B1R is a synchronous presettable 4-bit binary counter.
- Why is the M74HC161B1R considered obsolete? The M74HC161B1R is no longer manufactured by STMicroelectronics and has been replaced by newer models or substitutes.
- What is the logic family of the M74HC161B1R? The M74HC161B1R belongs to the 74HC logic family.
- What is the counting mode of the M74HC161B1R? The counting mode is synchronous.
- How is the clear input implemented in the M74HC161B1R? The clear input is asynchronous.
- What is the typical propagation delay of the M74HC161B1R? The typical propagation delay is around 24 ns.
- What are the operating temperature and supply voltage ranges for the M74HC161B1R? The operating temperature range is -40°C to 125°C, and the supply voltage range is 2V to 6V.
- Is the M74HC161B1R compatible with TTL logic levels? Yes, it is compatible with TTL logic levels.
- What are some common applications of the M74HC161B1R? Common applications include digital counters, sequential logic circuits, microprocessor and microcontroller systems, and automotive and industrial control systems.
- Where can I find substitutes for the M74HC161B1R? Substitutes can be found through distributors like Digi-Key, Mouser, and other electronic component suppliers.
