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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Nov 20, 6. Posted by ljbp in forum: It seems that this IC does exactly the opposite of what you would want it to do.
Shown above, is an example application of the 74LS48 7-seg decoder circuit. Darasheet IC power required? Posted by hihihi8 in forum: I have learnt about the and Nov 23, 8, 6, Before you go looking for obsolete ICs, show us your circuit diagram and we can offer a solution.
The decimal point indicator on this volt-meter as well as the colons “: 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. Mar 31, 23, 7, A PWM pulse-width modulated signal can be applied to this pin to provided varying brightnesses to the LED display being driven, dattasheet user control of LED dimming for applications such as power saving by decreasing the brightness during times of low ambient light.
A high output is intended to light the segment.
74LS48 BCD to 7-segment Decoder Driver IC | Warefab
If I am reading it right. 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.
Apr 28, 1, This package accepts a datasheet Binary Coded Decimal BCD input and converts it to the proper pattern necessary to illuminate a 7 segment display. 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 datasueet drop is very small and no current flow. And, to bring things full circuit, 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.
You can get it on ebay. Posted by praondevou in forum: On the other hand, when outputting a logic LO, the output is seldom more than a few hundred millivolts above ground, which is a much more reliable drive signal not to mention the higher current capacity. Oct 28, 2. Posted by iMayne in forum: Nov 20, There is nothing wrong with the Common cathodemeaning the negative connection of all of the LEDs is tied together.
Nov 20, 4.
(PDF) 7448 Datasheet download
To build a simple digital counter, consider using the decade counter. The is obsolete. Do you already have an account?