Overview
The SN74ACT374DWE4 is an octal D-type edge-triggered flip-flop integrated circuit produced by Texas Instruments. This device is part of the ACT series, known for its high-speed and low-power consumption. It operates within a voltage range of 4.5V to 5.5V, making it suitable for a variety of digital logic applications. The flip-flops are designed to capture data on the positive edge of the clock signal and feature 3-state outputs, which can be set to a high-impedance state to facilitate bus-driven systems without the need for additional interface components.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| VCC (Supply Voltage) | V | 4.5 | 5.5 | |
| VIH (High-Level Input Voltage) | V | 2 | ||
| VIL (Low-Level Input Voltage) | V | 0.8 | ||
| IOH (High-Level Output Current) | mA | -24 | ||
| IOL (Low-Level Output Current) | mA | 24 | ||
| TA (Operating Free-Air Temperature) | °C | -40 | 85 | |
| tpd (Propagation Delay Time) | ns | 2 | 10 | 12 |
| fclock (Clock Frequency) | MHz | 70 | 100 | |
| tw (Pulse Duration, CLK High or Low) | ns | 5 | ||
| tsu (Setup Time, Data Before CLK↑) | ns | 5 | 5.5 | |
| th (Hold Time, Data After CLK↑) | ns | 1.5 |
Key Features
- Operation within a voltage range of 4.5V to 5.5V.
- Inputs accept voltages up to 5.5V and are TTL-voltage compatible.
- Maximum propagation delay time of 10ns at 5V.
- 3-state outputs designed for driving highly capacitive or low-impedance loads.
- Buffered output-enable (OE) input to control output states.
- Suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
Applications
- Buffer registers and working registers in digital systems.
- I/O ports and bidirectional bus drivers in microprocessor and microcontroller systems.
- Bus-organized systems where high-impedance states are necessary.
- High-speed digital logic circuits requiring low power consumption.
Q & A
- What is the operating voltage range of the SN74ACT374DWE4?
The operating voltage range is 4.5V to 5.5V.
- What is the maximum propagation delay time at 5V?
The maximum propagation delay time is 10ns.
- What is the purpose of the OE (output-enable) input?
The OE input allows the outputs to be set to a normal logic state or a high-impedance state.
- What are the typical applications of the SN74ACT374DWE4?
Typical applications include buffer registers, I/O ports, bidirectional bus drivers, and working registers in digital systems.
- What is the clock frequency range of the SN74ACT374DWE4?
The clock frequency range is up to 100 MHz.
- What are the thermal characteristics of the device?
The junction-to-ambient thermal resistance varies by package type, with values such as 70°C/W for DB (SSOP) and 126.2°C/W for PW (TSSOP).
- How do I handle the device to prevent damage from electrostatic discharge (ESD)?
Handle the device with appropriate ESD precautions to prevent damage.
- What are the input and output voltage ranges?
The input and output voltage ranges are from 0 to VCC (up to 5.5V).
- What is the maximum continuous output current?
The maximum continuous output current is ±50 mA.
- What is the storage temperature range for the device?
The storage temperature range is from -65°C to 150°C.
