Details

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BUY UPD74HC239C https://www.utsource.net/itm/p/9227336.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Low Voltage	VIL				1.5	V
Input High Voltage	VIH		3.5			V
Output Low Voltage	VOL	IO = 8 mA	0		0.1	V
Output High Voltage	VOH	IO = -4 mA	2.7		5.0	V
Propagation Delay Time	tpd	VCC = 4.5 to 5.5V	6		10	ns
Power Supply Current	ICC	All Inputs at VCC/2		1		μA

Instructions for UPD74HC239C

1. Power Supply: Ensure the power supply voltage (VCC) is within the specified range of 2V to 6V for reliable operation.

2. Input Signals: Apply input signals that meet the required voltage levels for logic high (VIH) and logic low (VIL). Avoid exceeding the maximum ratings to prevent damage.

3. Output Loading: Connect loads that do not exceed the output current capabilities. Ensure that the output voltages (VOH, VOL) are within acceptable limits under load conditions.

4. Propagation Delay: Account for propagation delay in timing calculations, especially in high-speed applications.

5. Decoupling Capacitors: Place decoupling capacitors close to the VCC and GND pins to minimize noise and transient effects.

6. Handling Precautions: Handle the device with care to avoid ESD damage. Use proper anti-static precautions during assembly and handling.

7. Storage Conditions: Store in a dry environment and follow manufacturer recommendations for storage temperature and humidity.

8. Mounting: Ensure proper mounting on the PCB to avoid mechanical stress which can affect performance and reliability.

For detailed specifications and application notes, refer to the official datasheet provided by the manufacturer.

(For reference only)