Overview
The SN74HC574NG4, produced by Texas Instruments, is an octal edge-triggered D-type flip-flop integrated circuit. This device is part of the 74HC series, known for its high-speed and low-power CMOS logic. It features 3-state outputs, making it particularly suitable for bus driving applications such as buffer registers, I/O ports, bidirectional bus drivers, and working registers.
Key Specifications
| Parameter | Unit | Min | Max | |
|---|---|---|---|---|
| Supply Voltage (VCC) | V | 2 | 5 | 6 |
| High-Level Input Voltage (VIH) | V | 1.5 (VCC=2V), 3.15 (VCC=4.5V), 4.2 (VCC=6V) | ||
| Low-Level Input Voltage (VIL) | V | 0.5 (VCC=2V), 1.35 (VCC=4.5V), 1.8 (VCC=6V) | ||
| Output Voltage (VO) | V | 0 | VCC | |
| Input Transition Rise/Fall Time | ns | 1000 (VCC=2V), 500 (VCC=4.5V), 400 (VCC=6V) | ||
| Operating Free-Air Temperature (TA) | °C | -40 | 85 | |
| Clock Frequency (fclock) | MHz | 6 (VCC=2V), 30 (VCC=4.5V), 38 (VCC=6V) | ||
| Propagation Delay (tpd) | ns | 90 (VCC=2V), 28 (VCC=4.5V), 24 (VCC=6V) | ||
| Quiescent Current (ICC) | µA | 8 | 80 |
Key Features
- Wide operating voltage range of 2 V to 6 V
- High-current 3-state noninverting outputs drive bus lines directly or up to 15 LSTTL loads
- Low power consumption, with a maximum ICC of 80 µA
- Typical propagation delay of 22 ns
- ±6-mA output drive at 5 V
- Low input current of 1-µA max
- Bus-structured pinout
- RoHS and lead-free compliant
Applications
The SN74HC574NG4 is particularly suitable for various applications including:
- Buffer registers
- I/O ports
- Bidirectional bus drivers
- Working registers
These applications benefit from the device's high-speed, low-power operation, and its ability to drive bus lines directly.
Q & A
- What is the operating voltage range of the SN74HC574NG4?
The operating voltage range is from 2 V to 6 V.
- What is the maximum quiescent current (ICC) of the SN74HC574NG4?
The maximum quiescent current is 80 µA.
- What is the typical propagation delay of the SN74HC574NG4?
The typical propagation delay is 22 ns.
- How many LSTTL loads can the outputs drive?
The outputs can drive up to 15 LSTTL loads.
- Is the SN74HC574NG4 RoHS and lead-free compliant?
- What is the clock frequency range of the SN74HC574NG4?
The clock frequency range is from 6 MHz at 2 V to 38 MHz at 6 V.
- What is the input transition rise/fall time for the SN74HC574NG4?
The input transition rise/fall time ranges from 1000 ns at 2 V to 400 ns at 6 V.
- What are the typical applications of the SN74HC574NG4?
Typical applications include buffer registers, I/O ports, bidirectional bus drivers, and working registers.
- What is the operating free-air temperature range for the SN74HC574NG4?
The operating free-air temperature range is from -40°C to 85°C.
- What is the output drive capability of the SN74HC574NG4 at 5 V?
The output drive capability is ±6 mA at 5 V.
