SN74HC148DR

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SN74HC148DR

+Nomenclature

IC PRIORITY ENCOD 1 X 8:3 16SOIC

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Spécifications

Attribut Valeur
Package Tape & Reel (TR),Cut Tape (CT),Bulk
Series 74HC
ProductStatus Active
Type Priority Encoder
Circuit 1 x 8:3
IndependentCircuits 1
Current-OutputHighLow 5.2mA, 5.2mA
VoltageSupplySource Single Supply
Voltage-Supply 2V ~ 6V
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 16-SOIC (0.154, 3.90mm Width)

Présentation

Description

The SN74HC148DR is a high-speed CMOS 8-to-3 priority encoder by Texas Instruments. It is part of the 74HC logic family, designed for applications requiring efficient data encoding. This device features eight active-low inputs and provides a 3-bit binary representation of the highest-priority active input. The priority encoding ensures that when multiple inputs are low, the highest-order input (input with the highest numerical value) is processed first.
Key features of the SN74HC148DR include:
1. High-Speed Operation: With a typical propagation delay of 15 ns, it supports fast data processing.
2. Wide Operating Voltage: It operates within a voltage range of 2V to 6V, making it versatile for different circuit requirements.
3. Low Power Consumption: CMOS technology ensures reduced power usage.
4. Active-Low Outputs: The outputs are designed to drive loads with a wide range of input conditions.
5. Cascadable Architecture: Multiple encoders can be cascaded for larger input arrays.
This encoder is suitable for applications in digital data processing, communication systems, and control systems needing efficient data selection and encoding.

Equivalent

The SN74HC148DR is a priority encoder from Texas Instruments. Equivalent products include:
1. 74HC148 from Nexperia or ON Semiconductor
2. CD74HC148 from Texas Instruments or other manufacturers
3. MC14532 from ON Semiconductor
4. MM74HC148 from Fairchild Semiconductor or its successors
These alternatives provide similar functionality but may differ in specifications, so always check datasheets for compatibility.

Features

The SN74HC148DR is a high-speed CMOS 8-to-3 line priority encoder, part of Texas Instruments' HC series. Key features include:
1. Priority Encoding: It accepts eight input signals and encodes them into a 3-bit binary output, prioritizing the highest-order input.
2. High Speed: Operates at a high speed with typical propagation delays, suitable for complex digital circuits.
3. Wide Supply Voltage Range: Can operate with supply voltages ranging from 2V to 6V, providing flexibility for various applications.
4. Low Power Consumption: Features low power consumption, making it efficient for battery-powered and low-power systems.
5. Standard CMOS Output Drive: Can interface with TTL and other CMOS devices due to standard output drive characteristics.
6. Enable Input and Output: Includes a cascading feature using the enable input (EI) and enable output (EO), allowing for easy scalability in larger systems.
7. Compact Package: Available in a small SOIC-16 package, facilitating space-saving designs in modern electronics.
These features make it suitable for applications requiring signal prioritization, data routing, and control systems.

Pinout

The SN74HC148DR is a 16-pin integrated circuit that functions as an 8-to-3 line priority encoder. It is part of the 74HC series of high-speed CMOS logic devices. This device encodes eight input signals (D0 to D7) into a 3-bit binary output (Y0 to Y2) based on priority, where D7 holds the highest priority and D0 the lowest. In addition to the primary function, it has additional pins for enable input (EI), enable output (EO), and group select output (GS), which are useful for cascading purposes or when handling multiple devices. This IC is primarily used in digital systems for data compression and efficient encoding of multiple input signals into binary form.

Manufacturer

The SN74HC148DR is manufactured by Texas Instruments. Texas Instruments, often abbreviated as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits. The company is one of the largest manufacturers of analog technology components and embedded processors. TI's products are used in a wide range of applications, including industrial, automotive, personal electronics, and communication equipment. The company is known for its innovation and extensive portfolio of electronic components, catering to a global market.

Application

The SN74HC148DR is an 8-to-3 priority encoder used in digital electronics. Its application areas include:
1. Data Compression: It reduces multiple input lines to fewer outputs.
2. Interrupt Handling: Prioritizes interrupt requests in microcontroller systems.
3. Digital Circuit Design: Simplifies complex logic designs by encoding input signals.
4. Signal Processing: Used in systems that require signal prioritization.
5. Communication Systems: Encodes multiple data lines for effective transmission.
6. Embedded Systems: Assists in resource management by prioritizing tasks.
The device is optimal for applications requiring fast and efficient conversion of multiple input signals into a simplified encoded form.

Package

The SN74HC148DR is a digital integrated circuit from Texas Instruments. It comes in a SOIC-16 package, which stands for Small Outline Integrated Circuit with 16 pins. This surface-mount package type is designed for automatic placement and soldering on printed circuit boards.

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