Details

---

BUY DM74LS20N https://www.utsource.net/itm/p/1733259.html
Octal Buffer/Line Driver with 3-STATE Outputs; Package: SOIC-Wide; No of Pins: 20; Container: Tape & Reel

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	VCC		4.75		5.25	V
Input Low Voltage	VIL	IL = 0.4 mA	0.8			V
Input High Voltage	VIH	IH = -0.4 mA			2.0	V
Output Low Voltage	VOL	IL = 16 mA	0.4			V
Output High Voltage	VOH	IH = -4 mA			2.4	V
Propagation Delay Time	tpd	VCC = 5V, TA = 25°C		9	22	ns
Power Dissipation	Pd	Per Package			100	mW
Operating Temperature Range	TA		0		70	°C
Storage Temperature Range	TSTG		-65		150	°C

Instructions for Using DM74LS20N:

1. Power Supply:

   • Ensure the supply voltage (V_CC) is within the range of 4.75V to 5.25V.
   • Connect the ground (GND) pin to a stable 0V reference.

2. Input Signals:

   • For a logic low input, ensure the voltage is below 0.8V.
   • For a logic high input, ensure the voltage is above 2.0V.

3. Output Signals:

   • When the output is low, the voltage will be no more than 0.4V.
   • When the output is high, the voltage will be at least 2.4V.

4. Propagation Delay:

   • The typical propagation delay time is 9ns at 25°C and 5V supply voltage. The maximum delay is 22ns.

5. Power Dissipation:

   • The maximum power dissipation per package is 100mW. Ensure proper heat dissipation if operating near this limit.

6. Temperature Considerations:

   • The operating temperature range is from 0°C to 70°C.
   • The storage temperature range is from -65°C to 150°C.

7. Handling:

   • Handle the IC with care to avoid static damage.
   • Use appropriate ESD protection when handling the device.

8. Circuit Design:

   • Ensure all inputs are either tied to V_CC or GND when not in use to prevent floating inputs.
   • Use decoupling capacitors (e.g., 0.1μF) close to the power pins to filter out noise.

9. Testing:

   • Test the IC under controlled conditions to ensure it meets the specified parameters.
   • Use a multimeter or oscilloscope to verify input and output voltages.

10. Storage:

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

(For reference only)