74LS20D: Pilihan Utama di United States (USA) Utsource Holding Company Limited

Penerangan

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	V_CC	Operating	4.75	5	5.25	V
Input High Voltage	V_IH	I_IH = 20 μA	2.0	-	V_CC	V
Input Low Voltage	V_IL	I_IL = -0.4 mA	0	-	0.8	V
Output High Voltage	V_OH	I_OH = -0.4 mA	2.7	-	V_CC	V
Output Low Voltage	V_OL	I_OL = 16 mA	0	-	0.5	V
Propagation Delay Time	t_pd	V_CC = 5V, T_A = 25°C	-	9	-	ns
Power Dissipation	P_D	Continuous	-	-	100	mW
Operating Temperature	T_A	Commercial	0	-	70	°C
Storage Temperature	T_STG		-65	-	150	°C

Power Supply:
- Connect V_CC to +5V and GND to 0V.
- Ensure that the power supply voltage is within the specified range (4.75V to 5.25V) to avoid damage.
Input Connections:
- Apply logic high (V_IH) or low (V_IL) signals to the input pins.
- Ensure that input voltages do not exceed V_CC or go below GND to prevent damage.
Output Connections:
- Connect the output pins to the next stage of your circuit.
- The output can sink or source current, but ensure that the current does not exceed the maximum ratings.
Propagation Delay:
- The propagation delay time (t_pd) is typically 9 ns at room temperature (25°C). This value may vary with temperature and supply voltage.
Temperature Considerations:
- The device operates reliably within the commercial temperature range (0°C to 70°C).
- Store the device in temperatures between -65°C and 150°C.
Power Dissipation:
- The maximum power dissipation is 100 mW. Ensure adequate heat sinking if the device is expected to dissipate significant power.
Handling Precautions:
- Handle the device with care to avoid static discharge, which can damage the internal circuits.
- Use appropriate anti-static precautions when handling and storing the device.
Pin Configuration:
- Refer to the datasheet for the specific pin configuration of the 74LS20D. The device typically has 14 pins, with two dual 4-input NAND gates.

By following these guidelines, you can ensure reliable operation and longevity of the 74LS20D IC.

(For reference only)