Overview
The SN74HC74DE4, produced by Texas Instruments, is a dual D-type positive-edge-triggered flip-flop integrated circuit. This device contains two independent flip-flops, each with asynchronous preset and clear pins. It is part of the 74HC series, known for its high-speed CMOS logic and low power consumption. The SN74HC74DE4 is widely used in various digital circuits for its ability to store and transfer data on the positive edge of the clock signal.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (14 pins) | - |
| Supply Voltage (VCC) | 2 to 6 | V |
| Operating Temperature Range | -40 to +85 | °C |
| Clock Frequency | Up to 60 MHz at 6 V | MHz |
| Propagation Delay | 15 ns at 6 V | ns |
| Input Current | 1 µA max | µA |
| Output Drive | ±4 mA at 5 V | mA |
| Input Capacitance | 3 pF | pF |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | - |
Key Features
- Buffered inputs
- Wide operating voltage range: 2 V to 6 V
- Wide operating temperature range: -40°C to +85°C
- Supports fanout up to 10 LSTTL loads
- Significant power reduction compared to LSTTL logic ICs
- Positive-edge-triggered flip-flops with asynchronous preset and clear pins
- Low power consumption, 40-µA max ICC
- Balanced CMOS push-pull outputs
Applications
- Convert a momentary switch to a toggle switch
- Divide a clock signal by 2 or 4
- General-purpose digital storage and transfer in digital circuits
- Counters and frequency dividers
- Sequential logic circuits
Q & A
- What is the SN74HC74DE4? The SN74HC74DE4 is a dual D-type positive-edge-triggered flip-flop integrated circuit produced by Texas Instruments.
- What is the operating voltage range of the SN74HC74DE4? The operating voltage range is 2 V to 6 V.
- What is the maximum clock frequency of the SN74HC74DE4? The maximum clock frequency is up to 60 MHz at 6 V.
- What is the propagation delay of the SN74HC74DE4? The propagation delay is 15 ns at 6 V.
- How many LSTTL loads can the SN74HC74DE4 drive? It can drive up to 10 LSTTL loads.
- What is the operating temperature range of the SN74HC74DE4? The operating temperature range is -40°C to +85°C.
- What type of outputs does the SN74HC74DE4 have? The SN74HC74DE4 has balanced CMOS push-pull outputs.
- What is the input capacitance of the SN74HC74DE4? The input capacitance is 3 pF.
- Is the SN74HC74DE4 RoHS compliant? Yes, the SN74HC74DE4 is lead-free and RoHS compliant.
- What are common applications of the SN74HC74DE4? Common applications include converting momentary switches to toggle switches, dividing clock signals, and general-purpose digital storage and transfer in digital circuits.
