Overview
The SN74HC191DR, manufactured by Texas Instruments, is a high-performance 4-bit synchronous binary up/down counter. This component is part of the 74HC series, known for its advanced silicon-gate CMOS technology, which combines high noise immunity with low power consumption. The SN74HC191DR is designed for applications requiring precise counting and timing, making it suitable for a wide range of digital systems. Its target user groups include engineers and designers working in industrial automation, consumer electronics, and automotive electronics. The product stands out for its synchronous operation, high-speed performance, and versatile counting capabilities.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Type | Binary Counter | - | Synchronous |
| Direction | Up/Down | - | - |
| Number of Bits | 4 | - | Per Element |
| Counting Rate | 24 | MHz | - |
| Trigger Type | Positive Edge | - | - |
| Supply Voltage | 2 to 6 | V | - |
| Operating Temperature | -40 to 85 | °C | - |
| Mounting Type | Surface Mount | - | - |
| Package | SOIC-16 | - | 3.90mm Width |
Key Features
- Synchronous Operation: All flip-flops are clocked simultaneously, ensuring precise and synchronized counting.
- Up/Down Counting: Supports both increment and decrement operations, providing flexibility in counting applications.
- High-Speed Performance: Capable of operating at a counting rate of up to 24 MHz, suitable for high-frequency applications.
- Low Power Consumption: Utilizes CMOS technology to minimize power usage, ideal for battery-powered devices.
- Wide Voltage Range: Operates within a supply voltage range of 2V to 6V, making it compatible with various digital systems.
Applications
The SN74HC191DR is widely used in applications requiring precise counting and timing. In industrial automation, it is employed in control systems and machinery for accurate event counting. In consumer electronics, it is utilized in devices such as digital clocks and timers. Automotive electronics benefit from its reliability in systems like odometers and fuel injection controllers. Its versatility and high performance make it a preferred choice for engineers and designers across multiple industries.
Q & A
What is the counting rate of the SN74HC191DR?
The SN74HC191DR has a maximum counting rate of 24 MHz.
Can the SN74HC191DR count both up and down?
Yes, it supports both up and down counting operations.
What is the operating voltage range of this component?
It operates within a voltage range of 2V to 6V.
What is the package type of the SN74HC191DR?
It comes in a SOIC-16 package with a width of 3.90mm.
Is the SN74HC191DR suitable for high-speed applications?
Yes, its synchronous operation and high counting rate make it ideal for high-speed applications.
What is the temperature range for operation?
It operates within a temperature range of -40°C to 85°C.
Does the SN74HC191DR support surface mounting?
Yes, it is designed for surface mount technology (SMT).
What is the logic type of this counter?
It is a synchronous binary counter.
How many bits does the SN74HC191DR support?
It is a 4-bit counter.
Is the SN74HC191DR suitable for automotive applications?
Yes, its reliability and performance make it suitable for automotive electronics.
