Overview
The CD74HC74E is a dual D-type flip-flop integrated circuit produced by Harris Corporation. This component utilizes silicon gate CMOS technology, which allows it to achieve operating speeds equivalent to LSTTL (Low-power Schottky Transistor-Transistor Logic) parts while maintaining the low power consumption characteristic of standard CMOS integrated circuits. The device is designed with independent DATA, SET, RESET, and CLOCK inputs and provides complementary Q and Q outputs.
Key Specifications
| Parameter | Symbol | Test Conditions | Units | Min | Typ | Max |
|---|---|---|---|---|---|---|
| Operating Voltage Range | VCC | - | V | 4.5 | - | 5.5 |
| Input Voltage Low | VIL | VCC = 5V | V | 0 | - | 0.8 |
| Input Voltage High | VIH | VCC = 5V | V | 2 | - | VCC |
| Propagation Delay, CP to Q, Q | tPLH, tPHL | CL = 50pF, VCC = 5V | ns | 30 | 37 | 45 |
| Transition Time | tTLH, tTHL | CL = 50pF, VCC = 5V | ns | 13 | 16 | 19 |
| Input Capacitance | CI | - | pF | - | - | 10 |
| Maximum Clock Frequency | fMAX | CL = 50pF, VCC = 5V | MHz | - | - | 25 |
| Package Type | - | - | - | 14 Ld PDIP | - | - |
| Operating Temperature Range | - | - | °C | -55 | - | 125 |
Key Features
- CMOS Technology: Utilizes silicon gate CMOS technology for low power consumption and high operating speeds.
- Dual D-Type Flip-Flop: Contains two independent D-type flip-flops with complementary Q and Q outputs.
- Independent Inputs: Features independent DATA, SET, RESET, and CLOCK inputs.
- LSTTL Compatibility: Functionally and pin compatible with the standard 74LS logic family.
- Low Power Consumption: Exhibits low power consumption characteristic of standard CMOS integrated circuits.
- High Drive Capability: Capable of driving 10 LSTTL loads.
- Operating Voltage Range: Operates within a voltage range of 4.5V to 5.5V.
Applications
- Digital Circuits: Used in various digital circuits requiring flip-flop functionality, such as counters, shift registers, and memory elements.
- Sequential Logic: Ideal for applications involving sequential logic where data needs to be stored and retrieved based on clock signals.
- Embedded Systems: Suitable for use in embedded systems that require low power consumption and high reliability.
- Communication Systems: Can be used in communication systems for data synchronization and storage.
Q & A
- What is the CD74HC74E?
The CD74HC74E is a dual D-type flip-flop integrated circuit produced by Harris Corporation.
- What technology does the CD74HC74E use?
The CD74HC74E uses silicon gate CMOS technology.
- What is the operating voltage range of the CD74HC74E?
The operating voltage range is 4.5V to 5.5V.
- What are the key inputs of the CD74HC74E?
The key inputs include DATA, SET, RESET, and CLOCK.
- What are the outputs of the CD74HC74E?
The outputs are complementary Q and Q.
- Is the CD74HC74E compatible with other logic families?
Yes, it is functionally and pin compatible with the standard 74LS logic family.
- What is the maximum clock frequency of the CD74HC74E?
The maximum clock frequency is 25 MHz at VCC = 5V and CL = 50pF.
- What is the package type of the CD74HC74E?
The package type is 14 Ld PDIP (Plastic Dual In-Line Package).
- What is the operating temperature range of the CD74HC74E?
The operating temperature range is -55°C to 125°C.
- What are some common applications of the CD74HC74E?
Common applications include digital circuits, sequential logic, embedded systems, and communication systems.
