Details

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BUY CD74HCT259E https://www.utsource.net/itm/p/11691058.html
IC 8BIT ADDRESSABLE LATCH 16-DIP

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	VCC	2.0	4.5	6.0	V	Operating supply voltage
Input Voltage (High)	VIH	3.15	-	VCC	V	Minimum input voltage for logic high
Input Voltage (Low)	VIL	0	-	0.8	V	Maximum input voltage for logic low
Output Voltage (High)	VOH	2.4	-	VCC - 0.5	V	Minimum output voltage for logic high
Output Voltage (Low)	VOL	0	-	0.4	V	Maximum output voltage for logic low
Input Current (High)	IIH	-	1.0	20	μA	Input current at logic high
Input Current (Low)	IIL	-1.0	-	-20	μA	Input current at logic low
Output Current (Source)	IOH	-	4.0	20	mA	Maximum output current when sourcing
Output Current (Sink)	IOL	-20	-4.0	-	mA	Maximum output current when sinking
Propagation Delay Time	tpd	-	18	36	ns	Typical propagation delay time
Power Dissipation	PD	-	-	500	mW	Maximum power dissipation
Operating Temperature	TA	-40	-	85	°C	Ambient operating temperature range
Storage Temperature	TSTG	-65	-	150	°C	Storage temperature range

Instructions for Using the CD74HCT259E

1. Power Supply:

   • Connect the V_CC pin to a supply voltage between 2.0V and 6.0V.
   • Connect the GND pin to ground.

2. Input Signals:

   • Ensure that all input signals (e.g., A, B, C, G, E) are within the specified voltage ranges for logic high and low.
   • Use appropriate pull-up or pull-down resistors if necessary to ensure stable logic levels.

3. Output Handling:

   • The outputs can source or sink up to 20mA. Ensure that connected loads do not exceed this limit.
   • Use external current-limiting resistors if driving LEDs or other components that require current limiting.

4. Propagation Delay:

   • Account for the typical propagation delay of 18ns to 36ns when designing timing-sensitive circuits.

5. Thermal Management:

   • Ensure adequate heat dissipation if the device is operating near its maximum power dissipation limit.
   • Avoid exceeding the maximum operating temperature of 85°C.

6. Storage and Handling:

   • Store the device in a dry environment within the storage temperature range of -65°C to 150°C.
   • Handle with care to avoid static damage and mechanical stress.

7. Testing and Debugging:

   • Use a multimeter to verify supply voltages and logic levels.
   • Use an oscilloscope to measure propagation delays and signal integrity.

By following these guidelines, you can ensure reliable operation of the CD74HCT259E in your digital circuits.

(For reference only)