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CD4511 7-Segment Driver IC

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Pin configuration

Pin no.

Pin name

Description

1,2,6,7

B,C,D,A

BCD input of the IC

3

Display test/Lamp test

To test the display LEDs

4

Blank input

To turn-off the LEDs of the display

5

Store

Store or strobe a BCD code

8

Gnd

Ground

9,10,11,12,13,14,15

e,d,c,b,a,g,f

7-segment outputs

16

Vcc

Positive supply input

 

Features

  • Lamping test and blanking capability.
  • Low logic circuit power dissipation.
  • Input latches for BCD code storage.
  • Balanced propagation delays and transition time.
  • High output sourcing capability.
  • Lamp intensity modulation capability.
  • Rigid structure.

 

Technical Specification

  • Supply voltage ranges from 3v to 18v
  • Set-up-time is 150, 70, and 40ns at 5v, 10v, and 15v respectively
  • Strobe pulse width is 400, 160, and 100ns at 5v, 10v, and 15v respectively
  • Hold time is zero
  • 100% tested for quiescent current at 20v
  • Having high input current of 1uA (max.) at 18v
  • Maximum output current sourcing of 25mA
  • Operating temperature ranges from -40 °C to 85 °C
  • Storage temperature ranges from -65 °C to 150 °C

 

CD4511 Equivalent ICs

74LS47, 7446, 7447, SN5446A, SN5447A, SN5448, SN54LS48, SN54LS47, SN74LS48, SN74LS49, SN54LS49, SN7448

 

Where to use CD4511 IC?

This IC combines the low quiescent power dissipation and high noise immunity feature of CMOS with NPN bipolar transistor, which is capable of giving output current of 25mA. Mainly this IC is used for lighting up or driving various types of display like 7-segment, low voltage fluorescent display and incandescent display. But this IC is mainly used for driving the 7-segment display..

 

How to use CD4511 IC?

To use this IC you don’t need too many things to connect, just need a toggle or push button to change the logic over the ICs input pins and pull down resistor with them as shown in the circuit. A resistor pack or few resistor are also needed to connect a 7-segment display. As the setup complete you just have to follow the table to get the required output number.

 Circuit using CD4511 7 segment driver IC

Displaying decimal number

BCD code

Push buttons

D

C

B

A

0

0000

Low

Low

Low

Low

1

0001

Low

Low

Low

High

2

0010

Low

Low

High

Low

3

0011

Low

Low

High

High

4

0100

Low

High

Low

Low

5

0101

Low

High

Low

High

6

0110

Low

High

High

Low

7

0111

Low

High

High

High

8

1000

High

Low

Low

Low

9

1001

High

Low

Low

High

 

2D-Model of IC CD4511 

 CD4511 7 segment driver IC 2D model


Download Datasheet PDF:
CD4511 7-Segment Driver Datasheet