Overview
The 74HC74D/AU118 is a dual D-type flip-flop integrated circuit produced by NXP USA Inc. This component is part of the 74HC series, known for its high-speed CMOS technology. It features individual data, clock, set, and reset inputs, along with complementary outputs. The flip-flop stores data at the positive edge of the clock pulse, making it highly useful in various digital circuit applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SO14 (SOT108-1) | |
| Number of Elements | 2 | |
| Number of Bits per Element | 1 | |
| Trigger Type | Positive Edge | |
| Maximum Clock Frequency | 77 MHz (typ.) at VCC = 5 V | |
| Supply Voltage Range | 2 V to 6 V | V |
| Operating Temperature Range | -40°C to 125°C | °C |
| Quiescent Supply Current | 2.0 µA (max) at Ta = 25°C | µA |
| Propagation Delay Time (CK-Q) | 13 ns (typ.) at VCC = 5 V, CL = 15 pF | ns |
| Output Transition Time | 6 ns (typ.) at VCC = 5 V, CL = 15 pF | ns |
| Input Capacitance | 3.5 pF | pF |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V |
Key Features
- High-speed CMOS technology with low power dissipation.
- Dual D-type flip-flop with individual data, clock, set, and reset inputs.
- Complementary nQ and nQ outputs.
- Schmitt-trigger action in the clock input for tolerance to slower clock rise and fall times.
- Inputs include clamp diodes for protection against static discharge and transient excess voltage.
- Wide operating temperature range: -40°C to 125°C.
- High noise immunity and balanced propagation delays.
- Symmetrical output impedance.
Applications
- Digital counters and timers.
- Shift registers and data storage circuits.
- Sequential logic circuits.
- Microprocessor and microcontroller systems.
- Automotive and industrial control systems.
Q & A
- What is the 74HC74D/AU118 used for?
The 74HC74D/AU118 is used as a dual D-type flip-flop in digital circuits, suitable for applications such as counters, timers, shift registers, and sequential logic circuits.
- What is the maximum clock frequency of the 74HC74D/AU118?
The maximum clock frequency is 77 MHz (typical) at a supply voltage of 5 V.
- What is the operating temperature range of the 74HC74D/AU118?
The operating temperature range is -40°C to 125°C.
- What type of trigger does the 74HC74D/AU118 use?
The 74HC74D/AU118 uses a positive edge trigger.
- What is the quiescent supply current of the 74HC74D/AU118?
The quiescent supply current is 2.0 µA (maximum) at 25°C.
- Does the 74HC74D/AU118 have ESD protection?
Yes, it has ESD protection exceeding 2000 V according to ANSI/ESDA/JEDEC JS-001 class 2.
- What is the package type of the 74HC74D/AU118?
The package type is SO14 (SOT108-1).
- What are the input levels for the 74HC74D/AU118?
The input levels are CMOS compatible.
- Does the 74HC74D/AU118 have balanced propagation delays?
Yes, it has balanced propagation delays.
- What is the typical output transition time of the 74HC74D/AU118?
The typical output transition time is 6 ns at VCC = 5 V and CL = 15 pF.
