Overview
The SN74LS273DWR is a monolithic, positive-edge-triggered octal D-type flip-flop integrated circuit produced by Texas Instruments. This component utilizes TTL (Transistor-Transistor Logic) circuitry to implement D-type flip-flop logic with a direct clear input. It is part of the 74LS series, known for its low power consumption and high speed.
The device consists of eight D-type flip-flops, each with a common clock and an asynchronous active-low master clear input. This makes it suitable for various digital logic applications, including buffer/storage registers, shift registers, and pattern generators.
Key Specifications
| Parameter | Unit | Min | Nom | Max |
|---|---|---|---|---|
| Supply Voltage (VCC) | V | 4.5 | 5 | 5.5 |
| High-Level Output Current (IOH) | µA | -400 | -400 | -400 |
| Low-Level Output Current (IOL) | mA | 4 | 8 | 8 |
| Clock Frequency (fclock) | MHz | 0 | 30 | 30 |
| Propagation Delay Time (tPLH, tPHL) | ns | 17 | 27 | 27 |
| Operating Free-Air Temperature Range | °C | 0 | - | 70 |
| Storage Temperature Range | °C | -65 | - | 150 |
Key Features
- Positive-Edge-Triggered D-Type Flip-Flops: Each flip-flop is triggered on the positive-going edge of the clock pulse.
- Direct Clear Input: Asynchronous active-low master clear input allows for immediate reset of all flip-flops.
- Common Clock: All eight flip-flops share a common clock input.
- Low Power Consumption: Part of the 74LS series, known for low power dissipation (typically 10 milliwatts per flip-flop).
- High Speed: Maximum clock frequency of up to 30 MHz.
- Buffered Clock and Clear Inputs: Ensures stable and reliable operation.
- Individual Data Inputs: Each flip-flop has its own data input.
Applications
- Buffer/Storage Registers: Used for temporary storage of data in digital systems.
- Shift Registers: Can be used to shift data bits in a serial or parallel manner.
- Pattern Generators: Useful in generating specific digital patterns for testing or control purposes.
- Digital Logic Circuits: General use in various digital logic applications where D-type flip-flops are required.
Q & A
- What is the SN74LS273DWR?
The SN74LS273DWR is an octal D-type flip-flop integrated circuit with a direct clear input, produced by Texas Instruments.
- What type of logic does the SN74LS273DWR use?
The SN74LS273DWR uses TTL (Transistor-Transistor Logic) circuitry.
- What is the maximum clock frequency of the SN74LS273DWR?
The maximum clock frequency is typically up to 30 MHz.
- What is the power consumption of the SN74LS273DWR?
The typical power dissipation is 10 milliwatts per flip-flop.
- What are the common applications of the SN74LS273DWR?
Common applications include buffer/storage registers, shift registers, and pattern generators.
- What is the operating temperature range of the SN74LS273DWR?
The operating free-air temperature range is from 0°C to 70°C.
- How many flip-flops does the SN74LS273DWR contain?
The device contains eight D-type flip-flops.
- What type of clear input does the SN74LS273DWR have?
The device has an asynchronous active-low master clear input.
- What is the propagation delay time of the SN74LS273DWR?
The propagation delay time (tPLH, tPHL) is typically 17 to 27 ns.
- What package types are available for the SN74LS273DWR?
The component is available in SOIC (DW) and SOP (NS) packages among others.
