Overview
The SN74HC74NSR is a dual D-type positive-edge-triggered flip-flop integrated circuit produced by Texas Instruments. This device contains two independent flip-flops, each with asynchronous preset and clear pins. It is part of the HC (High-Speed CMOS) logic family, known for its wide operating voltage range and significant power reduction compared to older LSTTL logic ICs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SO (Small Outline) | |
| Pins | 14 | |
| Operating Voltage Range | 2 V to 6 V | V |
| Operating Temperature Range | -40°C to +85°C | °C |
| Maximum Clock Frequency | Up to 36 MHz at 6 V | MHz |
| Propagation Delay | 15 ns to 39 ns at 6 V | ns |
| Transition Time | 6 ns to 16 ns at 6 V | ns |
| Package Dimensions | 10.20 mm × 5.30 mm | mm |
Key Features
- Buffered Inputs: Ensures stable input signals.
- Wide Operating Voltage Range: Operates from 2 V to 6 V.
- Wide Operating Temperature Range: Functional from -40°C to +85°C.
- High Fanout Capability: Supports up to 10 LSTTL loads.
- Significant Power Reduction: Compared to LSTTL logic ICs.
- Balanced CMOS Push-Pull Outputs: Capable of sinking and sourcing similar currents.
- Clamp Diode Structure: Protects inputs and outputs from voltage spikes.
Applications
- Convert a Momentary Switch to a Toggle Switch: Useful in various control circuits.
- Divide a Clock Signal by 2 or 4: Common in digital timing and sequencing circuits.
- General Digital Logic Circuits: Suitable for use in a wide range of digital logic applications.
Q & A
- What is the SN74HC74NSR?
The SN74HC74NSR is a dual D-type positive-edge-triggered flip-flop integrated circuit from Texas Instruments.
- What is the operating voltage range of the SN74HC74NSR?
The operating voltage range is from 2 V to 6 V.
- What is the maximum clock frequency of the SN74HC74NSR?
The maximum clock frequency is up to 36 MHz at 6 V.
- What are the key features of the SN74HC74NSR?
Key features include buffered inputs, wide operating voltage and temperature ranges, high fanout capability, significant power reduction, balanced CMOS push-pull outputs, and clamp diode structure.
- What are common applications of the SN74HC74NSR?
Common applications include converting a momentary switch to a toggle switch, dividing a clock signal by 2 or 4, and general use in digital logic circuits.
- What is the package type and pin count of the SN74HC74NSR?
The package type is SO (Small Outline) with 14 pins.
- What is the operating temperature range of the SN74HC74NSR?
The operating temperature range is from -40°C to +85°C.
- How does the SN74HC74NSR protect against voltage spikes?
The device includes a clamp diode structure to protect inputs and outputs from voltage spikes.
- What is the significance of balanced CMOS push-pull outputs in the SN74HC74NSR?
The balanced CMOS push-pull outputs allow the device to sink and source similar currents, ensuring stable output signals.
- Can the SN74HC74NSR be used in safety-critical applications?
While the SN74HC74NSR is robust, it is important to consult the datasheet and any relevant safety guidelines before using it in safety-critical applications.
