Dual Positive-Edge-Triggered D-Type Flip-Flops with Set and Reset 14-SOIC -55 to 125# CD74AC74M96G4 Technical Documentation
Manufacturer : Texas Instruments/Burr-Brown (TI/BB)
Component Type : Dual D-Type Positive-Edge-Triggered Flip-Flop with Clear and Preset
Technology : Advanced CMOS (AC)
## 1. Application Scenarios
### Typical Use Cases
The CD74AC74M96G4 is primarily employed in digital systems requiring reliable data storage and synchronization:
Data Storage Applications
- Temporary data storage in microprocessor systems
- Pipeline registers in data processing units
- Input/output buffering in communication interfaces
- State machine implementation for control logic
Timing and Synchronization
- Clock domain crossing synchronization
- Frequency division circuits (divide-by-2 counters)
- Signal debouncing circuits for mechanical switches
- Pulse shaping and waveform generation
Control Systems
- Sequence control in automated systems
- Event detection and latching circuits
- Mode selection registers in configurable systems
### Industry Applications
Consumer Electronics
- Digital televisions and set-top boxes for signal processing
- Gaming consoles for controller input synchronization
- Audio/video equipment for data timing control
- Smart home devices for state management
Industrial Automation
- PLC (Programmable Logic Controller) systems
- Motor control circuits for position tracking
- Sensor data acquisition and conditioning
- Process control timing circuits
Telecommunications
- Data packet buffering in network equipment
- Clock recovery circuits in serial communication
- Protocol conversion interfaces
- Signal routing control logic
Automotive Systems
- Engine control units for sensor data latching
- Infotainment systems for user interface control
- Safety system state machines
- Power management control circuits
### Practical Advantages and Limitations
Advantages
- High-Speed Operation : Typical propagation delay of 5.5 ns at 5V
- Low Power Consumption : CMOS technology ensures minimal static power
- Wide Operating Voltage : 2V to 6V supply range
- High Noise Immunity : 30% of supply voltage noise margin
- Symmetric Output Drive : Balanced rise/fall times for clean signals
Limitations
- Limited Drive Capability : Maximum output current of 24mA
- ESD Sensitivity : Requires proper handling (2kV HBM)
- Temperature Range : Commercial grade (0°C to 70°C)
- Clock Frequency : Maximum 160MHz at 5V supply
## 2. Design Considerations
### Common Design Pitfalls and Solutions
Clock Signal Integrity
- Pitfall : Excessive clock skew causing timing violations
- Solution : Use matched-length traces and proper termination
- Implementation : Route clock signals first with controlled impedance
Power Supply Decoupling
- Pitfall : Inadequate decoupling causing false triggering
- Solution : Place 100nF ceramic capacitor within 5mm of VCC pin
- Implementation : Use multiple capacitor values (100nF + 10μF) for broadband filtering
Signal Quality Issues
- Pitfall : Slow input rise/fall times causing metastability
- Solution : Ensure input signals meet minimum slew rate requirements
- Implementation : Add Schmitt trigger buffers for noisy inputs
### Compatibility Issues
Voltage Level Translation
- Issue : Interfacing with 3.3V or 1.8V logic families
- Solution : Use level shifters or ensure proper voltage thresholds
- Compatibility : Direct interface with other AC/ACT series components
Mixed Technology Integration
- CMOS to TTL : Requires pull-up resistors for proper high-level output
- TTL to CMOS : May need level translation for proper logic levels
- Mixed Signal : Consider ground bounce and power supply isolation
Timing Constraints
- Setup time: 3.0 ns
