Details

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BUY SN74HC145N https://www.utsource.net/itm/p/9836248.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC		2.0		6.0	V
Input Low Voltage	VIL	IIL = 1.0 mA	0.8			V
Input High Voltage	VIH	IIH = -0.4 mA			2.0	V
Output Low Voltage	VOL	IO = 4.0 mA	0.1			V
Output High Voltage	VOH	IO = -0.4 mA			VCC-0.2	V
Propagation Delay Time	tpd	VCC = 4.5V, TA = 25°C		13		ns
Power Dissipation	PD	VCC = 4.5V, f = 1 MHz		75		mW

Instructions for SN74HC145N

1. Power Supply:

   • Ensure the supply voltage (VCC) is within the range of 2.0V to 6.0V.
   • Connect the ground (GND) pin to a stable reference point.

2. Input Signals:

   • Apply input signals ensuring they meet the input voltage levels (VIL and VIH).
   • Avoid exceeding the maximum input voltage limits to prevent damage.

3. Output Handling:

   • Ensure that output voltages do not exceed the supply voltage or drop below ground level.
   • Limit current through outputs to avoid overheating; typical applications should keep within specified current limits.

4. Timing Considerations:

   • Account for propagation delay in timing-sensitive circuits.
   • Use the propagation delay time (tpd) as a key parameter when designing with this IC.

5. Thermal Management:

   • Monitor power dissipation and ensure it does not exceed the rated value under operating conditions.
   • Provide adequate heat sinking if operating at high frequencies or under high ambient temperatures.

6. Handling Precautions:

   • Handle the device with care to avoid electrostatic discharge (ESD) damage.
   • Store and transport in appropriate ESD protective packaging.

Note: Always refer to the manufacturer's datasheet for detailed specifications and application notes.

(For reference only)