said circuitry and specifications. Page 7. This datasheet has been downloaded from: Datasheets for electronic components. Home > Integrated Circuits > 74 Series > 74LS Series. 74LS48 – 74LS48 BCD to 7-segment Decoder/Driver Datasheet – Buy 74LS Technical Information. QEA. ACTIVE. CDIP. J. 1. TBD. A N / A for Pkg Type. to QE. A. SNJAJ. QFA. ACTIVE. CFP. W.

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Quote of the day. Oct 2, 17, 5, Shown above, is an example application of the 74LS48 7-seg decoder circuit.

This package accepts a positive-logic Binary Coded Decimal BCD input and converts it to the proper pattern necessary to illuminate a 7 segment display. The Everything-as-a-Service Business Model: Nov 20, And, to bring things full dqtasheet, the reason that TTL uses predominantly active LO drives is that particularly the early TTL families has significantly strong current-sinking capabilities than they had current-sourcing capabilities.

Nov 20, 5. If you’re kind enough to send me your address I can send you some. It was designed to sink current when using common anode 7-segments LED. Do you already have an account? However, if pins are limited on the microcontroller, it can be advantageous to use ICs in a multiplexing fashion to drive the 7-segment displays.


Feb 19, 4, All segments are extinguished when a low logical zero signal is applied to pin 4 OUT. Posted by praondevou in forum: For example here is the table to display the number 1.

Before you go looking for obsolete ICs, show us your circuit diagram and we can offer a solution. Posted by iMayne in forum: Mar 31, 23, 7, There is nothing wrong with the The decimal point indicator on this volt-meter as well as the colons “: Nov 23, 8, 6, Common cathodemeaning the negative connection of all of the LEDs is tied together. A high output is intended to light the segment. Apr 28, 1, I have learnt about the and The outputs are open-collector but have internal 2K ohm pull-up resistors and have a maximum low-level output sink current of 6 milliamperes 6mA.

(PDF) 7448 Datasheet download

Nov 20, 2. When you want to light up the LED, you let the pin on to go low, this makes the pin a “ground” for the voltage source, now there is a voltage drop across the LED and there is flow of current, the LED lights up.

The is obsolete. The difference in voltage between pin and the voltage source is too small to light up the LED, so there is no voltage drop across the LED or the drop is very small and no current flow. I might have some or chips laying around let me see though Here is what is going to happen. Nov 20, 9. Datzsheet 20, 8.


When you connect the LED, the leg that is normally connected to ground should be connected ci thethe leg that is normally connected to voltage source should be connected to voltage source.

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IC is wierd! | All About Circuits

Nov 20, 3. Wierd smartphone is comming alive Posted by Bobvayne in forum: You May Also Like: If I am reading it right. Making AI, Drones, and Robotics More Accessible The “as-a-Service” model is changing the way innovators use new technologies—sometimes by giving access to new technologies that would be out of their grasp otherwise.

Oct 28, 2. Nov 20, 1.