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What does enable pin do in ic?
The purpose of an enable pin is to allow disabling the part (or some function of it) when you do not need it.
What is an enable pin?
The enable pin of ON Semiconductor eFuses provides a number of features. With all eFuses, a transistor may be used to force the pin low to disable the output. In addition, it may be left floating if no control of the enable pin is required.
What is output enable?
A control input to an integrated circuit that, depending on the logic level applied to it, either permits or prevents the output of data from the device.
How many total Active low pins are there in IC 74138?
PIN CONFIGURATION
| `PINS | DETAIL | |
|---|---|---|
| GND | Pin 7 | Pin 7 will be used as ground common for devices connected to the decoder. |
| Y7 | Pin 8 | There are total 8 outputs on 74LS138 and all pins from 8 – 15 will represent the out of the decoder. These pins will give the output state as an active LOW. |
| Y6 | Pin 9 | |
| Y5 | Pin 10 |
Which are the ground pins in L293D IC?
L293D has 16 Pins in total which are as follows:
- Pin # 1 is Enable 1 which is used to turn ON or OFF the first H-bridge.
- Pin # 2 is Input1, which is the first Input for Motor1.
- Pin # 3 is Output1, which is the first Output for Motor1.
- Pin # 4 & 5 are GND, so they should be connected to 0V or ground.
Why is pin 3 important in an IC counter circuit?
Since 7-segment LED displays consume much power, this chip has special function Display Enable In (DEI) through pin 3, which is has to be HIGH when a display is required. This is useful if you had many display panels, because you could switch them ON only when required thereby saving power.
When to use clock inhibit at pin 2?
The “Clock Inhibit” function at pin 2 is utilised when you want to stop the count by blocking the clock signal at pin 1. Since in this application we will not be stopping the counter this way, it is best to tie it to the ground to keep it LOW. If you tied it HIGH, then it would inhibit the clock signal at pin 1.
Is the display enable output ( Deo ) pin 4 gated?
The Display Enable Output (DEO) pin 4, and Un-gated C-Segment (UCS) pin 14, are utilised in special divider circuits, and therefore not connected in this simple application.
How does a capacitor connect to an IC?
There is another aspect to consider, relating to parasitic inductances, which is how the connection is routed to the IC. Rather than routing a short trace from the capacitor to the IC pins, you should connect the capacitor directly to the ground and power planes through vias.