Overview
The 74HC574D is a high-speed CMOS octal D-type flip-flop with 3-state outputs, manufactured by Toshiba Semiconductor and Storage. This integrated circuit is fabricated using silicon gate C2MOS technology, which allows it to achieve high-speed operation similar to LSTTL while maintaining the low power dissipation characteristic of CMOS devices. The 74HC574D is controlled by a clock input (CK) and an output enable input (OE), with the OE input capable of placing the eight outputs in a high impedance state when high. All inputs are protected against static discharge and transient excess voltage.
Key Specifications
| Characteristics | Symbol | Min | Typ | Max | Unit | Test Condition |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 2.0 | - | 6.0 | V | - |
| Input Voltage | VIN | -0.5 | - | VCC + 0.5 | V | - |
| Output Voltage | VOUT | -0.5 | - | VCC + 0.5 | V | - |
| High-Level Input Voltage | VIH | 1.50 | - | - | V | VCC = 2.0 to 6.0 V |
| Low-Level Input Voltage | VIL | - | - | 0.50 | V | VCC = 2.0 to 6.0 V |
| High-Level Output Voltage | VOH | 1.9 | - | - | V | IOH = -20 µA, VCC = 4.5 V |
| Low-Level Output Voltage | VOL | - | - | 0.1 | V | IOL = 20 µA, VCC = 4.5 V |
| Minimum Pulse Width (CK) | tw(L), tw(H) | 108 | - | - | ns | - |
| Minimum Setup Time (Dn) | ts | 22 | - | - | ns | - |
| Maximum Clock Frequency | fMAX | - | - | 23 | MHz | VCC = 4.5 V |
Key Features
- High-speed CMOS octal D-type flip-flop with 3-state outputs.
- Positive edge-triggered flip-flops.
- Wide operating temperature range: -40°C to 125°C (for products manufactured after July 2020).
- Low power dissipation.
- Input protection circuits against static discharge and transient excess voltage.
- Output enable input (OE) to place outputs in a high impedance state.
- Pin compatible with low power Schottky TTL (LSTTL).
Applications
- Digital logic circuits requiring high-speed and low power consumption.
- Memory and storage systems.
- Counters and timers.
- Sequential logic circuits.
- General-purpose digital signal processing.
Q & A
- What is the 74HC574D?
The 74HC574D is a high-speed CMOS octal D-type flip-flop with 3-state outputs, manufactured by Toshiba Semiconductor and Storage.
- What is the operating temperature range of the 74HC574D?
The operating temperature range is -40°C to 125°C for products manufactured after July 2020.
- What is the maximum clock frequency of the 74HC574D?
The maximum clock frequency is up to 23 MHz at VCC = 4.5 V.
- How are the inputs protected in the 74HC574D?
The inputs are protected against static discharge and transient excess voltage.
- What is the purpose of the output enable input (OE) in the 74HC574D?
The OE input places the eight outputs in a high impedance state when high.
- Is the 74HC574D pin compatible with other logic families?
Yes, it is pin compatible with low power Schottky TTL (LSTTL).
- What is the supply voltage range for the 74HC574D?
The supply voltage range is 2.0 V to 6.0 V.
- What are the typical applications of the 74HC574D?
Typical applications include digital logic circuits, memory and storage systems, counters, timers, and general-purpose digital signal processing.
- What technology is used to fabricate the 74HC574D?
The 74HC574D is fabricated using silicon gate C2MOS technology.
- How many flip-flops are included in the 74HC574D?
The 74HC574D includes eight D-type flip-flops.
