Details

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BUY SN74LS147 https://www.utsource.net/itm/p/12600722.html

Parameter	Symbol	Min	Typ	Max	Unit
Supply Voltage	VCC	4.75	5.0	5.25	V
Input Low Voltage	VIL	0.8	-	-	V
Input High Voltage	VIH	-	-	2.0	V
Output Low Voltage	VOL	0.25	-	0.4	V
Output High Voltage	VOH	2.7	-	3.4	V
Input Leakage Current	IIL	-1.0	-	0.4	mA
Output Low Current	IOL	-	-	-16	mA
Output High Current	IOH	-	-	-0.4	mA
Propagation Delay Time	tpd	18	-	30	ns
Power Dissipation	PD	-	-	500	mW
Operating Temperature	TA	-55	-	125	掳C

Instructions for Using SN74LS147:

1. Power Supply:

   • Connect the V_CC pin to a 5V power supply.
   • Connect the GND pin to ground.

2. Input Connections:

   • The SN74LS147 has 10 input pins (A0 to A9) that can be connected to binary-coded decimal (BCD) inputs.
   • Ensure that only one input is low at any given time to avoid undefined states.

3. Output Connections:

   • The output is a 4-bit BCD code corresponding to the active low input.
   • Connect the output pins (Q0 to Q3) to the next stage of your circuit or to a decoder.

4. Propagation Delay:

   • The propagation delay time (t_pd) is the time it takes for the output to change after an input change. This is typically between 18 and 30 nanoseconds.

5. Current Limitations:

   • Do not exceed the maximum output current ratings to avoid damaging the IC.
   • Ensure that the total power dissipation does not exceed 500 mW.

6. Temperature Range:

   • The IC is designed to operate within a temperature range of -55掳C to 125掳C. Ensure that the operating environment stays within these limits.

7. Handling Precautions:

   • Handle the IC with care to avoid static damage.
   • Use proper anti-static precautions when handling and soldering the IC.

8. Testing:

   • Before integrating the IC into your final design, test it on a breadboard to ensure proper functionality.
   • Verify the output BCD code for each input to ensure correct operation.

(For reference only)