Overview
The CD74ACT273M is an octal D-type flip-flop with reset, produced by Texas Instruments. This device utilizes advanced CMOS logic technology and is designed for high-speed and low-power applications. It features eight edge-triggered D-type flip-flops, each with individual D inputs and Q outputs, controlled by a common buffered clock (CP) and a common asynchronous master reset (MR) input. The flip-flops are fully edge-triggered, transferring the state of each D input to the corresponding Q output on the positive-going edge of the clock pulse. The device is particularly useful in applications where true output only is required and where the clock and master reset are common to all storage elements.
Key Specifications
| Parameter | Symbol | Test Conditions | Typical Value | Guaranteed Limits |
|---|---|---|---|---|
| Supply Voltage | VCC | - | 3.0V to 5.5V | 3.0V to 5.5V |
| High Level Input Voltage | VIH | VCC = 5V, TA = 25°C | 3.85V | 2.1V to 3.85V |
| Low Level Input Voltage | VIL | VCC = 5V, TA = 25°C | 0.9V | 0.3V to 0.9V |
| High Level Output Voltage | VOH | VCC = 5V, TA = 25°C, CL = 50pF | 4.4V | 3.94V to 4.4V |
| Low Level Output Voltage | VOL | VCC = 5V, TA = 25°C, CL = 50pF | 0.1V | 0.1V to 0.3V |
| Propagation Delay | tPLH/tPHL | VCC = 5V, TA = 25°C, CL = 50pF | 6.5ns | 5ns to 7ns |
| Setup Time (Data to CP) | tSU | VCC = 5V, TA = 25°C | 2ns | 2ns to 5ns |
| Hold Time (Data to CP) | tH | VCC = 5V, TA = 25°C | 2ns | 2ns to 5ns |
| Clock Pulse Width | tW | VCC = 5V, TA = 25°C | 5ns | 4ns to 6ns |
| Master Reset Pulse Width | tW (MR) | VCC = 5V, TA = 25°C | 4ns | 2ns to 5ns |
| Input Capacitance | CIN | VCC = 5V | 10pF | 10pF |
| Power Dissipation Capacitance | CPD | VCC = 5V | 45pF | 45pF |
Key Features
- Buffered Inputs: Ensures stable and reliable input signals.
- Typical Propagation Delay: 6.5ns at VCC = 5V, TA = 25°C, CL = 50pF.
- SCR-Latchup-Resistant CMOS Process and Circuit Design: Enhances reliability and reduces the risk of latch-up.
- Speed of Bipolar FAST™/AS/S with Reduced Power Consumption: Combines high speed with low power consumption.
- Balanced Propagation Delays: Ensures consistent timing across all flip-flops.
- AC Types Feature 1.5V to 5.5V Operation and Balanced Noise Immunity: Operates over a wide voltage range with improved noise immunity.
- ±24mA Output Drive Current: Capable of driving 50Ω transmission lines and fanout to 15 FAST™ ICs.
- Exceeds 2kV ESD Protection MIL-STD-883, Method 3015: Provides robust protection against electrostatic discharge.
Applications
- MOS Microprocessor or Memory Buffers: Ideal for buffering in microprocessor or memory applications.
- High-Speed Digital Systems: Suitable for high-speed digital systems requiring low power consumption and fast propagation delays.
- Communication Systems: Can be used in communication systems where balanced noise immunity and high output drive current are necessary.
- Embedded Systems: Useful in embedded systems where edge-triggered flip-flops with common clock and reset are required.
Q & A
- What is the CD74ACT273M?
The CD74ACT273M is an octal D-type flip-flop with reset, utilizing advanced CMOS logic technology.
- What are the key features of the CD74ACT273M?
Key features include buffered inputs, typical propagation delay of 6.5ns, SCR-latchup-resistant CMOS process, and high output drive current.
- What is the operating voltage range of the CD74ACT273M?
The device operates over a voltage range of 1.5V to 5.5V.
- How many flip-flops does the CD74ACT273M contain?
The device contains eight edge-triggered D-type flip-flops.
- What is the purpose of the master reset input?
The master reset input forces all outputs to LOW independently of the clock or data inputs.
- What is the typical propagation delay of the CD74ACT273M?
The typical propagation delay is 6.5ns at VCC = 5V, TA = 25°C, CL = 50pF.
- What is the output drive current capability of the CD74ACT273M?
The device can drive up to ±24mA and fanout to 15 FAST™ ICs.
- Is the CD74ACT273M ESD protected?
Yes, it exceeds 2kV ESD protection according to MIL-STD-883, Method 3015.
- What are common applications for the CD74ACT273M?
Common applications include MOS microprocessor or memory buffers, high-speed digital systems, communication systems, and embedded systems.
- What are the package options available for the CD74ACT273M?
The device is available in PDIP, SOIC, and other packages.
