Overview
The MC74ACT273N, produced by onsemi, is an octal D-type flip-flop integrated circuit. It features eight edge-triggered D flip-flops, each with individual D inputs and Q outputs. The device includes a common buffered Clock (CP) and a Master Reset (MR) input, which can load and reset all flip-flops simultaneously. This makes it particularly useful for applications where the true output only is required and the Clock and Master Reset are common to all storage elements.
The flip-flops are fully edge-triggered, meaning the state of each D input is transferred to the corresponding Q output during the LOW-to-HIGH clock transition. Additionally, all outputs can be forced LOW independently of the Clock or Data inputs by a LOW voltage level on the MR input.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| VCC (DC Supply Voltage) | −0.5 to +7.0 | V | Referenced to GND |
| VIN (DC Input Voltage) | −0.5 to VCC + 0.5 | V | Referenced to GND |
| VOUT (DC Output Voltage) | −0.5 to VCC + 0.5 | V | Referenced to GND |
| VIH (Minimum High Level Input Voltage) | 3.0 to 5.5 | V | VOUT = 0.1 V or VCC − 0.1 V |
| VIL (Maximum Low Level Input Voltage) | 0.9 to 1.65 | V | VOUT = 0.1 V or VCC − 0.1 V |
| VOH (Minimum High Level Output Voltage) | 2.9 to 5.49 | V | IOUT = −50 μA |
| Output Sink/Source Current | 24 mA | mA |
Key Features
- Ideal Buffer for MOS Microprocessor or Memory
- Eight Edge-Triggered D Flip-Flops
- Buffered Common Clock
- Buffered, Asynchronous Master Reset
- Outputs Source/Sink 24 mA
- ACT273 Has TTL Compatible Inputs
- Pb-Free Packages are Available
Applications
The MC74ACT273N is suitable for various digital circuit applications where synchronized data storage is required. It is particularly useful in:
- MOS microprocessor and memory systems
- Digital counters and timers
- Sequential logic circuits
- Data storage and retrieval systems
Q & A
- What is the MC74ACT273N?
The MC74ACT273N is an octal D-type flip-flop integrated circuit produced by onsemi.
- How many flip-flops does the MC74ACT273N have?
The MC74ACT273N has eight edge-triggered D-type flip-flops.
- What is the function of the Master Reset (MR) input?
The Master Reset (MR) input forces all outputs to LOW independently of the Clock or Data inputs when it is at a LOW voltage level.
- What is the significance of the buffered common Clock (CP) input?
The buffered common Clock (CP) input ensures that all flip-flops are triggered simultaneously by the clock signal.
- Are the inputs of the MC74ACT273N TTL compatible?
- What is the output current capability of the MC74ACT273N?
The outputs of the MC74ACT273N can source or sink up to 24 mA.
- Is the MC74ACT273N available in Pb-free packages?
- What are some common applications of the MC74ACT273N?
The MC74ACT273N is commonly used in MOS microprocessor and memory systems, digital counters and timers, sequential logic circuits, and data storage and retrieval systems.
- How does the edge-triggered mechanism work in the MC74ACT273N?
The state of each D input is transferred to the corresponding Q output during the LOW-to-HIGH clock transition.
- What are the alternative versions of the MC74ACT273N?
Alternative versions include the MC74AC377 for a clock enable version, MC74AC373 for a transparent latch version, and MC74AC374 for a 3-state version.
