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7442 BCD to Decimal Decoder

30,00 EGP

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  • Converts 4-bit BCD input to one of 10 decimal outputs
  • Outputs are active LOW (10 outputs)
  • Supports standard TTL logic levels
  • Used in digital display decoding and selection circuits
  • Ideal for driving decimal displays or controlling devices by digit

In stock

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Description

7442 BCD to Decimal Decoder – Product Overview

The 7442 is a BCD (Binary-Coded Decimal) to decimal decoder IC that converts 4-bit BCD inputs into one of ten mutually exclusive outputs. It is commonly used for driving decimal display devices or as a digital decoder in various logic applications.


⚙️ Key Features

  • ✅ Decodes 4-bit BCD input into 10 decimal outputs (0–9)

  • ✅ Outputs are active LOW (open-collector or open-drain type)

  • ✅ TTL compatible inputs and outputs

  • ✅ Operating voltage: 5V typical TTL logic

  • ✅ Can be used for driving displays or logic circuitry

  • ✅ Available in DIP-16 package for easy prototyping


📋 Specifications

ParameterDescription
IC Number7442
Input Type4-bit BCD
Output Type10 decimal outputs (active LOW)
Operating Voltage4.75V to 5.25V (Typical 5V)
Logic FamilyTTL
Package TypeDIP-16

🎯 Applications

  • Driving decimal display units

  • Digital clocks and counters

  • Data decoding in digital systems

  • Logic circuit design and debugging

  • Address decoding and multiplexing


📦 Package Includes

  • 1 × 7442 BCD to Decimal Decoder IC (DIP-16)

Photograph

7442 BCD to Decimal Decoder

Features

  • Single 7-Segment to BCD Decoder
  • Outputs Directly Interface to CMOS, NMOS and TTL
  • Large Operating Voltage Range
  • Wide Operating Conditions
  • Not Recommended for New Designs

Pin Layout

TTL 7442 Pin Layout

 

Pin Description

Pin NumberDescription
1Decimal 0 Output
2Decimal 1 Output
3Decimal 2 Output
4Decimal 3 Output
5Decimal 4 Output
6Decimal 5 Output
7Decimal 6 Output
8Ground
9Decimal 7 Output
10Decimal 8 Output
11Decimal 9 Output
12BCD D Input
13BCD C Input
14BCD B Input
15BCD A Input
16Vcc – Positive Supply

Dimensional Drawing

DIP16 IC Dimensional Drawing

 

Technical Data

Absolute Maximum Ratings

Supply Voltage7V
Input Voltage5.5V
Operating Free Air Temperature0°C to +70°C
Storage Temperature Range-65°C to +150°C

 

Recommended Operating Conditions

SymbolParameterMinTypMaxUnits
VccSupply Voltage4.7555.25V
VihHIGH Level Input Voltage2V
VilLOW Level Input Voltage0.8V
IohHIGH Level Output Current-0.4mA
IolLOW Level Output Current16mA
TaFree Air Operating Temperature070°C

 

Electrical Characteristics

SymbolParameterConditionsMinTypMaxUnits
ViInput Clamp VoltageVcc=Min Ii=-12mA-1.5V
VohHIGH Level Output VoltageVcc=Min Ioh=MAX Vil=MAX2.43.4V
VolLOW Level Output VoltageVcc=Min Iol=MAX Vih=MAX0.20.4V
IiInput Current@MAX Input VoltageVcc=Max Vi=5.5V1mA
IihHIGH Level Input CurrentVcc=Max Vi=2.4V40µA
IilLOW Level Input CurrentVcc=Max Vi=0.4V-1.6mA
IosShort Circuit Output CurrentVcc=Max-18-55mA
IcchSupply Current with Outputs HIGHVcc=Max48mA
IcclSupply Current with Outputs LOWVcc=Max1222mA

 

Switching Characteristics at Vcc=5V,Ta=25°C

SymbolParameterConditionsMinTypMaxUnits
tplhPropagation Delay Time LOW-to-HIGH Level OutputCl=15pF Rl=400R22nS
tphlPropagation Delay Time HIGH-to-LOW Level OutputCl=15pF Rl=400R15nS

Customer Reviews

Specification

Overview

Weight Weight 0,0000 g