SN74LS74ADR

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SN74LS74ADR

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IC FF D-TYPE DUAL 1BIT 14SOIC

  • Nhà sản xuấtTexas Dụng cụ

  • Ông. Phần #SN74LS74ADR

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Thông số kỹ thuật

thuộc tính Giá trị
Package Tape & Reel (TR),Cut Tape (CT)
Series 74LS
ProductStatus Active
Function Set(Preset) and Reset
Type D-Type
OutputType Complementary
NumberofElements 2
NumberofBitsperElement 1
ClockFrequency 33 MHz
MaxPropagationDelay@VMaxCL 40ns @ 5V, 15pF
TriggerType Positive Edge
Current-OutputHighLow 400µA, 8mA
Voltage-Supply 4.75V ~ 5.25V
Current-Quiescent(Iq) 8 mA
OperatingTemperature 0°C ~ 70°C (TA)
MountingType Surface Mount
SupplierDevicePackage 14-SOIC

Tổng quan

Description

The SN74LS74ADR is a dual D-type positive edge-triggered flip-flop with preset, clear, and complementary outputs. It is part of the 74LS series of logic devices, which are known for low power consumption and high speed. Each flip-flop in the SN74LS74ADR has independent data (D), clock (CLK), preset (PRE), and clear (CLR) inputs, along with complementary outputs (Q and Q̅).
Key features include:
- Edge-Triggered Operation: The device captures input data on the rising edge of the clock pulse.
- Asynchronous PRE and CLR: Independent preset and clear functions can set or reset the flip-flop immediately, regardless of the clock.
- Complementary Outputs: Each flip-flop provides both Q and Q̅ outputs.
- TTL-Compatible: Designed to interface with TTL (Transistor-Transistor Logic) circuits.
The SN74LS74ADR is typically used in applications that require data storage, data transfer, and state machine designs. Its robust operation and reliability make it suitable for various digital systems, including computers, communication devices, and automation systems.

Equivalent

The SN74LS74ADR is a dual D-type positive edge-triggered flip-flop with preset and clear capabilities. Equivalent products include the 74LS74 from various manufacturers like NXP, ON Semiconductor, and Fairchild (now part of ON Semiconductor). These equivalents generally have similar functionalities and electrical characteristics, ensuring compatibility in most applications. Always verify the datasheet for specific performance and pin configuration details to ensure compatibility in your specific application.

Features

The SN74LS74ADR is a dual D-type positive-edge-triggered flip-flop with preset and clear features. Key features include:
1. Logic Family: Belongs to the 74LS series, known for low-power Schottky TTL logic.
2. Supply Voltage: Operates typically at a 5V supply.
3. Inputs and Outputs: Equipped with two D-type flip-flops, each with individual D (data), CLK (clock), PR (preset), and CLR (clear) inputs.
4. Output Types: Provides complementary Q and Q' (not Q) outputs.
5. Edge-Triggered: Triggers on the positive edge of the clock signal.
6. Asynchronous Controls: Preset and clear functions are asynchronous, allowing immediate operation independent of the clock.
7. Package: Available in SOIC-14 (14-pin) surface-mount package.
8. Temperature Range: Typically operates within the commercial temperature range of 0°C to 70°C.
The SN74LS74ADR is suitable for a variety of applications in digital systems where flip-flops are required for data storage, data transfer, and sequencing operations.

Pinout

The SN74LS74ADR is a dual D-type positive-edge-triggered flip-flop IC. Regarding its pin count and functions:
- Pin Count: It has 14 pins.
- Functions:
- VCC (Pin 14): Power supply.
- GND (Pin 7): Ground.
- Each flip-flop has the following pins:
- Data (D): Data input.
- Clock (CLK): Triggers the flip-flop on the rising edge.
- Clear (CLR): Resets the flip-flop, active low.
- Preset (PRE): Sets the flip-flop, active low.
- Q: Normal output.
- Q': Inverted output.
It includes two identical, independent flip-flops with complementary outputs (Q and Q' are always opposite). The output states respond to the data inputs at the rising edge of the clock pulse if the preset and clear inputs are inactive. The clear and preset inputs are asynchronous and override the clock and data inputs when activated.

Manufacturer

The SN74LS74ADR is manufactured by Texas Instruments. Texas Instruments, often abbreviated as TI, is a global semiconductor design and manufacturing company that develops analog integrated circuits and embedded processors. Headquartered in Dallas, Texas, TI is known for a wide range of products, including calculators, microcontrollers, and digital signal processors. The company plays a significant role in the electronics industry by providing components that are essential for the operation of electronic devices across various sectors, including consumer electronics, automotive, industrial, and communications. TI is recognized for its innovation and contributions to technology and engineering.

Application

The SN74LS74ADR is a dual D-type positive-edge-triggered flip-flop with preset and clear capabilities. It's commonly used in digital electronics for applications such as data storage, data transfer, frequency division, and state machines. This component is essential in register design, counters, and shift registers due to its ability to store and manipulate binary data. Its edge-triggered nature makes it suitable for synchronous systems where timing and control are critical. Additionally, it can be used in debouncing circuits and for signal synchronization tasks in communication systems.

Package

The SN74LS74ADR is a dual D-type positive-edge-triggered flip-flop integrated circuit. It is available in a small outline package (SO) with 14 pins, which is suitable for surface mount technology (SMT).

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