Overview
The M74HC574RM13TR from STMicroelectronics is an octal edge-triggered D-type flip-flop with 3-state outputs. This component is designed for bus driving applications and is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The device operates on a wide voltage range and features high-current outputs, making it versatile for various digital circuit designs.
Key Specifications
| Parameter | Min | Typ | 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 | ||
| Input Transition Rise/Fall Time | 1000 (VCC=2V), 500 (VCC=4.5V), 400 (VCC=6V) | ns | ||
| Operating Free-Air Temperature | -40 | 85 | °C | |
| Clock Frequency | 6 (VCC=2V), 30 (VCC=4.5V), 38 (VCC=6V) | MHz | ||
| Pulse Duration, CLK High or Low | 80 (VCC=2V), 16 (VCC=4.5V), 14 (VCC=6V) | ns | ||
| Setup Time, Data Before CLK↑ | 100 (VCC=2V), 20 (VCC=4.5V), 17 (VCC=6V) | ns | ||
| Hold Time, Data After CLK↑ | 5 | 5 | ns | |
| Propagation Delay Time (tpd) | 90 (VCC=2V), 28 (VCC=4.5V), 24 (VCC=6V) | ns | ||
| Output Enable Time (ten) | 77 (VCC=2V), 26 (VCC=4.5V), 23 (VCC=6V) | ns | ||
| Output Disable Time (tdis) | 52 (VCC=2V), 24 (VCC=4.5V), 22 (VCC=6V) | ns |
Key Features
- Wide Operating Voltage Range: 2 V to 6 V, making it versatile for various applications.
- High-Current 3-State Noninverting Outputs: Capable of driving bus lines directly or up to 15 LSTTL loads.
- Low Power Consumption: Maximum ICC of 80 µA at 6 V.
- Fast Switching Times: Typical propagation delay time (tpd) of 22 ns at 5 V.
- High Output Drive Capability: ±6-mA output drive at 5 V.
- Low Input Current: Maximum input current of 1 µA.
- Bus-Structured Pinout: Simplifies bus driving and interfacing.
- Output Enable (OE) Input: Allows outputs to be in a high-impedance state, which does not affect internal flip-flop operations.
Applications
- Buffer Registers: Ideal for buffering data in digital circuits.
- I/O Ports: Suitable for implementing input/output ports in microcontrollers and other digital systems.
- Bidirectional Bus Drivers: Can drive bus lines in both directions without the need for additional interface components.
- Working Registers: Useful in various digital logic circuits where data needs to be stored and retrieved.
Q & A
- What is the operating voltage range of the M74HC574RM13TR?
The operating voltage range is from 2 V to 6 V.
- What is the maximum clock frequency for the M74HC574RM13TR?
The maximum clock frequency is 38 MHz at 6 V.
- How many flip-flops does the M74HC574RM13TR contain?
The device contains eight edge-triggered D-type flip-flops.
- What is the purpose of the output enable (OE) input?
The OE input allows the outputs to be placed in a high-impedance state, which does not affect the internal operations of the flip-flops.
- What is the typical propagation delay time (tpd) of the M74HC574RM13TR?
The typical propagation delay time is 22 ns at 5 V.
- Can the M74HC574RM13TR drive bus lines directly?
- What is the maximum input current for the M74HC574RM13TR?
The maximum input current is 1 µA.
- What are some common applications of the M74HC574RM13TR?
- Does the M74HC574RM13TR have low power consumption?
- What is the junction-to-ambient thermal resistance for the SOIC package?
