Overview
The SN74HC74DBRG4 is a dual D-type positive-edge-triggered flip-flop integrated circuit produced by Texas Instruments. This device contains two independent D-type flip-flops, each with asynchronous preset and clear pins. It is part of the HC74 series, known for its wide operating voltage range and low power consumption, making it versatile for various digital circuit applications.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| 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 | ||
| Operating Free-Air Temperature (TA) | -40 | 85 | °C | |
| 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) | ns | ||
| Output Drive Current | ±4 | mA | ||
| Package Type | SSOP (14 pins) |
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 max ICC
- Typical propagation delay of 15 ns at 5 V
- Low input current of 1 µA max
- 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
- Counters and shift registers
- Memory elements in digital systems
Q & A
- What is the SN74HC74DBRG4?
The SN74HC74DBRG4 is a dual D-type positive-edge-triggered flip-flop integrated circuit produced by Texas Instruments.
- What is the operating voltage range of the SN74HC74DBRG4?
The operating voltage range is from 2 V to 6 V.
- What is the maximum clock frequency for the SN74HC74DBRG4?
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 SN74HC74DBRG4?
The propagation delay is typically 70 ns at 2 V, 20 ns at 4.5 V, and 15 ns at 6 V.
- What is the output drive current of the SN74HC74DBRG4?
The output drive current is ±4 mA at 5 V.
- What are the key features of the SN74HC74DBRG4?
Key features include buffered inputs, wide operating voltage and temperature ranges, low power consumption, and balanced CMOS push-pull outputs.
- What are some common applications of the SN74HC74DBRG4?
Common applications include converting momentary switches to toggle switches, dividing clock signals, and use in general-purpose digital logic circuits.
- What is the package type of the SN74HC74DBRG4?
The package type is SSOP (14 pins).
- How should unused inputs be handled on the SN74HC74DBRG4?
Unused inputs must be held at VCC or GND to ensure proper device operation.
- What are the thermal considerations for the SN74HC74DBRG4?
The device has specified thermal resistance values and requires proper thermal management to avoid overheating.
