Part Number: SN74HC21 Hi! I have small issue with this logic AND gate IC. I have a simple circuit where I check the output of Gate IC with LED. For Logic Level H at output LED is working fine. For Logic Level L led at output is not on.
There are two resistors…
Hello Mohamed,
So I looked into D16 further in the schematic which you can find all the design files including the schematic here: https://www.ti.com/tool/DLP4500-C350REF
D16 is a RED LED that is controlled through FETs by POSENSE signal.
Here is a quick…
Other Parts Discussed in Thread: SN74HC21-Q1 Hi BU team
Would you help promote which device can meet below requirements?
1. 4 channel inputs positive-AND gate
2. automotive catalog
3. the power supply can support 1.8V and 3.3V
4. temperature range : -40…
Hi,
Thanks Clemens for the help. Besides the SN74HC21, you are going to need a second chip with an individual AND gate to AND those two signals together. I can recommend the SN74LVC1G08 which is our most popular part.
Thanks!
-Karan
Hi Elsa,
What is the operating voltage?
I would recommend using the SN74ALS133; 13 input positive NAND gate. The output can pass through another inverter like the SN74LVC1G04 to form AND gate. This will be a 2-chip solution. The overall size may be…
Part Number: SN74AHC1G09 Other Parts Discussed in Thread: SN74AS808B , SN74AHC08 , SN74HC21 Hello
Is there a bigger AND gate component with more inputs than SN74AHC1G09?
I'd like to AND together up to 16 signals, but in a signal package. Using SN74AHC1G09…
