Details

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BUY SN74F27N https://www.utsource.net/itm/p/1702922.html
TRIPLE 3-INPUT POSITIVE-NOR GATES

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	Vcc	-	4.5	5.0	5.5	V
Input Low Voltage	VIH	-	-	0.8	1.5	V
Input High Voltage	VIL	-	3.5	3.2	-	V
Output High Voltage	VOH	IOL = -0.4mA	2.4	2.7	-	V
Output Low Voltage	VOL	IOH = 0.4mA	-	0.4	0.5	V
Propagation Delay Time	tpd	Vcc = 5V, TA = 25°C	-	15	22	ns
Power Dissipation	PD	-	-	-	500	mW
Operating Temperature Range	TA	-	-40	-	85	°C

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the specified range of 4.5V to 5.5V.
   • Connect Vcc to the positive power supply and GND to the ground.

2. Input Levels:

   • For a logic low input, ensure the voltage is below 1.5V.
   • For a logic high input, ensure the voltage is above 3.5V.

3. Output Levels:

   • When the output is high, the voltage should be at least 2.4V under a load of -0.4mA.
   • When the output is low, the voltage should be no more than 0.5V under a load of 0.4mA.

4. Propagation Delay:

   • The typical propagation delay time is 15ns at 5V and 25°C. Ensure your system timing accounts for this delay.

5. Power Dissipation:

   • The maximum power dissipation is 500mW. Ensure adequate heat dissipation if operating near this limit.

6. Operating Temperature:

   • The device is designed to operate between -40°C and 85°C. Ensure the ambient temperature remains within this range.

7. Handling:

   • Handle the device with care to avoid damage from electrostatic discharge (ESD).
   • Follow proper soldering techniques to prevent thermal damage during assembly.

8. Storage:

   • Store the device in a dry, cool place to prevent moisture damage.
   • Keep the device in its original packaging until ready for use to protect against ESD.

(For reference only)