Details

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BUY 74LS20 https://www.utsource.net/itm/p/12608711.html

Parameter	Symbol	Min	Typ	Max	Unit
Supply Voltage	VCC	4.75	-	5.25	V
Input High Voltage	VIH	2.0	-	5.5	V
Input Low Voltage	VIL	0.0	-	0.8	V
Output High Voltage	VOH	2.7	-	5.0	V
Output Low Voltage	VOL	0.0	-	0.4	V
Input Current (High)	IIH	-1	-	20	渭A
Input Current (Low)	IIL	-1	-	0.4	mA
Output Current (High)	IOH	-0.4	-	-10	mA
Output Current (Low)	IOL	4	-	16	mA
Propagation Delay Time	tpd	9	-	34	ns
Power Consumption	Pd	-	32	-	mW

Instructions for Using 74LS20:

1. Power Supply:

   • Connect the V_CC pin to +5V and the GND pin to ground.
   • Ensure the supply voltage is within the specified range (4.75V to 5.25V).

2. Input Connections:

   • Connect the input pins (1, 2, 4, 5, 9, 10, 12, 13) to either V_CC (for logic high) or GND (for logic low).
   • Ensure input voltages are within the valid range (0.0V to 5.5V).

3. Output Connections:

   • The output pins (3, 6, 8, 11) will provide the logical result based on the inputs.
   • Ensure the load connected to the output does not exceed the maximum output current ratings.

4. Propagation Delay:

   • The time delay between the change in input and the corresponding change in output is the propagation delay (t_pd).
   • Typical propagation delay is around 18ns at room temperature.

5. Power Consumption:

   • The power consumption is typically 32mW per package under normal operating conditions.

6. Handling Precautions:

   • Handle the IC with care to avoid static damage.
   • Use proper heat sinking if operating at high frequencies or under high ambient temperatures.

7. Storage:

   • Store in a dry place and avoid exposure to extreme temperatures and humidity.

8. Testing:

   • Test the IC using a known good circuit to ensure it is functioning correctly before integrating it into your design.

(For reference only)