STMicroelectronics M74HC148 8-to-3 Line Priority Encoder Datasheet

The M74HC148 is a high-speed CMOS 8-to-3 line priority encoder fabricated with silicon gate C2MOS technology. It features high speed, low power dissipation, high noise immunity, symmetrical output impedance, etc. The encoder encodes eight data lines to a three-line (4-2-1) binary (octal) format. Cascading circuitry (enable input EI and enable output EO) is provided for octal expansion without the need for external circuitry. The data inputs are active at the low logic level. All inputs are equipped with protection circuits against static discharge and transient excess voltage. The M74HC148 is pin and function compatible with the 74 series 148.


STMicroelectronics M74HC148 8-to-3 Line Priority Encoder Datasheet - cover page
Brand
STMicroelectronics
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
11
File format
PDF
File size
333 KB
Published
10 August, 2012
Updated
29 September, 2023
MD5 checksum
8421A0383528500038053D4B2192FAF5

About this manual

The M74HC148 is a high-speed CMOS 8-to-3 line priority encoder fabricated with silicon gate C2MOS technology. It encodes eight data lines to three-line (4-2-1) binary (octal) and includes cascading circuitry to allow octal expansion without external components. The device features high noise immunity, symmetrical output impedance, and balanced propagation delays.

What's inside

  • Description
  • Pin Connection and IEC Logic Symbols
  • Input and Output Equivalent Circuit
  • Truth Table
  • Absolute Maximum Ratings
  • Recommended Operating Conditions
  • DC Specifications
  • AC Electrical Characteristics
  • Typical Application
  • Mechanical Data

Specifications

Supply Voltage Range2V to 6V
Operating Temperature Range-55 to 125 °C
Input Capacitance5 pF

Frequently asked questions

Is the M74HC148 compatible with 74 series logic?

Yes, it is pin and function compatible with 74 series 148.

What is the logic level for the data inputs?

The data inputs are active at the low logic level.

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