Overview
The SN74HC74DRG4, produced by Texas Instruments, is a dual D-type positive-edge-triggered flip-flop integrated circuit. This device contains two independent D-type flip-flops, each with asynchronous preset and clear pins. It is part of the 74HC series, known for its high-speed CMOS logic and wide operating voltage range. The SN74HC74DRG4 is packaged in a 14-pin SOIC (Small Outline Integrated Circuit) package, making it suitable for a variety of digital logic applications.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| Operating Temperature (TA) | -40 | 85 | °C | |
| High-Level Input Voltage (VIH) | 1.5 (VCC=2V), 3.15 (VCC=4.5V), 4.2 (VCC=6V) | V | ||
| Low-Level Input Voltage (VIL) | 0.5 (VCC=2V), 1.35 (VCC=4.5V), 1.8 (VCC=6V) | V | ||
| Maximum Clock Frequency | 6 (VCC=2V), 31 (VCC=4.5V), 36 (VCC=6V) | MHz | ||
| Propagation Delay (tpd) | 70 (VCC=2V), 20 (VCC=4.5V), 15 (VCC=6V) | 230 (VCC=2V), 46 (VCC=4.5V), 39 (VCC=6V) | ns | |
| Transition Time (tt) | 28 (VCC=2V), 8 (VCC=4.5V), 6 (VCC=6V) | 95 (VCC=2V), 19 (VCC=4.5V), 16 (VCC=6V) | ns |
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
- Low power consumption, 40-µA maximum ICC
- Typical propagation delay of 15 ns at 5 V
- ±4-mA output drive at 5 V
- Balanced CMOS push-pull outputs
- Clamp diode structure for input and output protection
Applications
- Convert a momentary switch to a toggle switch
- Divide a clock signal by 2 or 4
- General-purpose digital logic circuits
- Sequential logic circuits
- Timing and clocking circuits
Q & A
- What is the SN74HC74DRG4? The SN74HC74DRG4 is a dual D-type positive-edge-triggered flip-flop integrated circuit produced by Texas Instruments.
- What is the operating voltage range of the SN74HC74DRG4? The operating voltage range is from 2 V to 6 V.
- What is the maximum clock frequency of the SN74HC74DRG4? The maximum clock frequency is 6 MHz at 2 V, 31 MHz at 4.5 V, and 36 MHz at 6 V.
- What is the propagation delay of the SN74HC74DRG4? The propagation delay is typically 70 ns at 2 V, 20 ns at 4.5 V, and 15 ns at 6 V.
- Can the SN74HC74DRG4 drive LSTTL loads? Yes, it can drive up to 10 LSTTL loads.
- What is the power consumption of the SN74HC74DRG4? The maximum power consumption is 40 µA.
- What are the key features of the SN74HC74DRG4? Key features include buffered inputs, wide operating voltage and temperature ranges, low power consumption, and balanced CMOS push-pull outputs.
- What are common applications of the SN74HC74DRG4? Common applications include converting momentary switches to toggle switches, dividing clock signals, and use in general-purpose digital logic and sequential logic circuits.
- What is the package type of the SN74HC74DRG4? The SN74HC74DRG4 is packaged in a 14-pin SOIC (Small Outline Integrated Circuit).
- How should the outputs of the SN74HC74DRG4 be handled? Outputs should not be connected directly to VCC or ground, and unused outputs can be left floating.
