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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A PWM pulse-width modulated signal can be applied to this pin to provided varying brightnesses to the LED display being driven, allowing user control of LED dimming for applications such as power saving by decreasing the brightness during times of low ambient light.
When you connect the LED, the leg that is normally connected to ground should be connected to thethe leg that is normally connected to voltage source should be connected to voltage source. Nov 20, 1. Nathan Hale likes this.
7447 IC is wierd!
Nov 20, 5. It seems that this IC does exactly the opposite of what you would want it to do. Making AI, Drones, datashet 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.
What IC is this?
Datasheet, PDF – Alldatasheet
The is obsolete. The Everything-as-a-Service Business Model: Nov 20, 8. Posted by praondevou in forum: Before you go looking for obsolete ICs, show us your circuit diagram and we can offer a solution. Posted by ljbp in forum: Nov 21, Nov 20, 7. Is IC power required? Feb 19, 4, On the other hand, dtaasheet 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.
Nov 20, 6.
Nov 20, 4. Apr 28, 1, Nov 23, 8, 6, You May Also Like: Do you already have an account? Nov 20, 9. Oct 2, 17, 5, If I am reading it right. Nov 20, 3. 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.
For example here is the table xatasheet display the number 1. Hi guyshope all is well with everyone. 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.
Your name or email address: Nov 20, Nov 20, 2. Posted by iMayne in forum: If you just checked the output voltage of unloaded 5V TTL signals when they were HI it was not uncommon to see them dattasheet the 3.
74LS48 BCD to 7-segment Decoder Driver IC | Warefab
To build a simple digital counter, consider using the decade counter. All segments are extinguished when a low logical zero signal is applied to pin 4 OUT. Shown above, is an example application of the 74LS48 7-seg decoder circuit.
In this method, the microcontroller would send BCD binary coded decimal on 4 output pins to the chips. I am sure the guys who made this IC knew what they were doing, but my question is why are the outputs exactly opposite of what you would expect. Mar 31, 23, 7, Posted by hihihi8 in forum: If you’re kind enough to send me your address I can send you some. 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.
A high output is intended to light the segment.
Yes, my password is: Quote of the day. I have learnt about the and I might have some or chips laying around let dayasheet see though Other than a little more conditional logic connections and a few more stages, there’s nothing stopping you from building a full digital clock with hours, minutes, and seconds.
(PDF) 7448 Datasheet download
A line selector an additional output line on the microcontroller could select which chip to target and cycle through the set of displays to produce the overall numeric output. This is adequate for asserting a logic HI to other TTL kc chips, but it is not very good for driving other things. However, if pins are limited on the darasheet, it can be advantageous to use ICs in a multiplexing fashion to drive the 7-segment displays.
Wierd smartphone is comming alive Posted by Bobvayne in forum: