Details

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BUY SN74LS90N https://www.utsource.net/itm/p/12597892.html

Parameter	Description	Min	Typical	Max	Unit
Supply Voltage (VCC)	Operating supply voltage	4.75	-	5.25	V
Input Voltage (VIH)	High-level input voltage	2.0	-	-	V
Input Voltage (VIL)	Low-level input voltage	-	-	0.8	V
Output Voltage (VOH)	High-level output voltage	2.4	-	-	V
Output Voltage (VOL)	Low-level output voltage	-	-	0.4	V
Propagation Delay Time (tpd)	Time delay from input to output	22	-	34	ns
Power Dissipation (Ptot)	Total power dissipation	-	-	500	mW
Operating Temperature Range	Temperature range for operation	-55	-	125	掳C
Storage Temperature Range	Temperature range for storage	-65	-	150	掳C

Instructions for Using SN74LS90N

1. Power Supply:

   • Connect the V_CC pin to a 5V DC power supply.
   • Connect the GND pin to the ground.

2. Input Signals:

   • Ensure that the input signals (e.g., clock, reset) are within the specified input voltage ranges.
   • Use appropriate pull-up or pull-down resistors if necessary to maintain signal integrity.

3. Output Signals:

   • The output signals will be within the specified output voltage ranges.
   • Ensure that the load connected to the outputs does not exceed the maximum current ratings.

4. Propagation Delay:

   • Account for the propagation delay time when designing circuits to ensure proper timing and synchronization.

5. Temperature Considerations:

   • Operate the device within the specified temperature range to avoid damage.
   • Store the device in a temperature-controlled environment to prevent degradation.

6. Handling:

   • Handle the device with care to avoid static discharge, which can damage the internal components.
   • Use anti-static wrist straps and mats when handling the device.

7. Circuit Design:

   • Refer to the datasheet for detailed pin configurations and recommended circuit layouts.
   • Use decoupling capacitors near the power supply pins to reduce noise and improve stability.

8. Testing:

   • Test the device using a known good circuit setup to verify functionality.
   • Use an oscilloscope to monitor input and output signals for proper waveforms.

(For reference only)