Details

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BUY SN74LS145N https://www.utsource.net/itm/p/11246267.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC	Operating	4.75	5.0	5.25	V
Input Low Voltage	VIL		0		0.8	V
Input High Voltage	VIH		2.0		5.25	V
Output Low Voltage	VOL	IOL = 16 mA	0.4	0.5	0.6	V
Output High Voltage	VOH	IOH = -0.4 mA	2.4	2.7	3.4	V
Input Leakage Current	IIL	VCC = 5V, VI = 0V	-1.0		1.0	μA
Output Leakage Current	IOL	VCC = 5V, VO = 5V	-1.0		1.0	μA
Propagation Delay Time	tpd	VCC = 5V, TA = 25°C	9	15	22	ns
Power Dissipation	PD	Continuous			500	mW
Operating Temperature Range	TA	Commercial	0		70	°C
Storage Temperature Range	TSTG		-65		150	°C

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (V_CC) is within the specified range of 4.75V to 5.25V.
   • Connect V_CC to the positive power supply and GND to the ground.

2. Input Signals:

   • Apply input signals within the valid range: V_IL ≤ 0.8V for low and V_IH ≥ 2.0V for high.
   • Avoid applying voltages outside the input range to prevent damage.

3. Output Signals:

   • The output will be low (V_OL) when the corresponding input is high, and high (V_OH) when the input is low.
   • Ensure the load connected to the output does not exceed the maximum current ratings.

4. Temperature Considerations:

   • Operate the device within the specified temperature range (0°C to 70°C) for reliable performance.
   • Store the device within the storage temperature range (-65°C to 150°C).

5. Propagation Delay:

   • Account for the propagation delay time (t_pd) in your timing calculations to ensure proper operation of your circuit.

6. Power Dissipation:

   • Ensure that the total power dissipation does not exceed 500 mW to avoid overheating and potential damage.

7. Handling:

   • Handle the device with care to avoid static discharge, which can damage sensitive components.
   • Follow standard ESD (Electrostatic Discharge) precautions when handling the device.

8. Mounting:

   • Solder the device to the PCB following recommended soldering profiles to ensure good thermal and electrical connections.
   • Avoid excessive heat during soldering to prevent damage to the device.

By following these guidelines, you can ensure optimal performance and reliability of the SN74LS145N in your application.

(For reference only)