Overview
The 74LVC74AD/AU118 is a dual D-type flip-flop integrated circuit produced by NXP USA Inc. This component is part of the LVC (Low-Voltage CMOS) family and is designed for use in a variety of digital logic applications. It features individual data, clock, set, and reset inputs, along with complementary outputs. The flip-flop is triggered on the positive edge of the clock pulse, making it suitable for synchronous logic circuits.
Key Specifications
| Type Number | VCC (V) | Logic Switching Levels | Output Drive Capability (mA) | tpd (ns) | fmax (MHz) | Power Dissipation Considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package Name |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC74AD | 1.2 - 3.6 | CMOS/LVTTL | ± 24 | 2.5 | 250 | Low | -40 to +125 | 109 | 21 | 68 | SO14 |
Key Features
- Dual D-type Flip-Flop: Each flip-flop has individual data (nD), clock (nCP), set (nSD), and reset (nRD) inputs, along with complementary nQ and nQ outputs.
- Positive-Edge Triggered: Information on the data input is transferred to the nQ output on the LOW-to-HIGH transition of the clock pulse.
- Asynchronous Set and Reset: The set and reset inputs are active LOW and operate independently of the clock input.
- Schmitt Trigger Inputs: Highly tolerant of slower input rise and fall times.
- 5 V Tolerant Inputs: Compatible with 5 V logic for interlacing with other logic families.
- Wide Supply Voltage Range: Operates from 1.2 V to 3.6 V.
- Low Power Consumption: CMOS technology for low power dissipation.
- Direct Interface with TTL Levels: Compatible with TTL logic levels.
- ESD Protection: HBM (Human Body Model) exceeds 2000 V and CDM (Charged Device Model) exceeds 1000 V.
- Multiple Package Options: Available in various packages, including SO14 (SOT108-1).
Applications
- Digital Logic Circuits: Suitable for use in synchronous digital logic circuits where data needs to be stored and retrieved based on clock signals.
- Counters and Timers: Can be used in the construction of counters, timers, and other sequential logic circuits.
- Memory Elements: Useful in memory elements and data storage applications due to its ability to store and retrieve data based on clock transitions.
- Interface Circuits: Ideal for interfacing between different logic families due to its 5 V tolerant inputs and compatibility with TTL levels.
Q & A
- What is the 74LVC74AD/AU118 used for?
The 74LVC74AD/AU118 is a dual D-type flip-flop used in digital logic circuits for storing and retrieving data based on clock signals.
- What is the trigger type of the 74LVC74AD/AU118?
The 74LVC74AD/AU118 is triggered on the positive edge of the clock pulse.
- What are the asynchronous inputs on the 74LVC74AD/AU118?
The set (nSD) and reset (nRD) inputs are asynchronous active LOW inputs.
- What is the supply voltage range of the 74LVC74AD/AU118?
The supply voltage range is from 1.2 V to 3.6 V.
- Is the 74LVC74AD/AU118 compatible with 5 V logic?
Yes, it has 5 V tolerant inputs for interlacing with 5 V logic.
- What is the maximum clock frequency of the 74LVC74AD/AU118?
The maximum clock frequency is 250 MHz.
- What type of ESD protection does the 74LVC74AD/AU118 have?
The 74LVC74AD/AU118 has HBM (Human Body Model) exceeding 2000 V and CDM (Charged Device Model) exceeding 1000 V.
- In what temperature range can the 74LVC74AD/AU118 operate?
The operating temperature range is from -40 °C to +125 °C.
- What package options are available for the 74LVC74AD/AU118?
It is available in various packages, including SO14 (SOT108-1).
- Does the 74LVC74AD/AU118 comply with any specific standards?
Yes, it complies with JEDEC standards such as JESD8-7A, JESD8-5A, and JESD8-C/JESD36.
