74LS02: Top Choice in United States (USA) Utsource Holding Company Limited

Description

Below is the parameter table and instructions for the 74LS02 Quad 2-Input OR Gate IC.

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage	V_CC	4.75	5.0	5.25	V
Input High Voltage	V_IH	2.0	3.5		V	I_L = -0.4 mA
Input Low Voltage	V_IL		0.8	1.5	V	I_H = 20 μA
Output High Voltage	V_OH	2.7	3.5		V	I_L = -4.0 mA
Output Low Voltage	V_OL		0.4	0.5	V	I_H = 16 mA
Input Leakage Current	I_IL	-1.0	-0.4		μA	V_CC = 5 V
Input High Current	I_IH	10	20		μA	V_CC = 5 V
Output Low Current	I_OL	-8	-16	-24	mA	V_CC = 5 V
Output High Current	I_OH	-0.4	-1.0	-1.6	mA	V_CC = 5 V
Propagation Delay Time	t_pd	9	11	15	ns	V_CC = 5 V
Power Dissipation	P_D		100	150	mW	Per Package

Power Supply:
- Connect V_CC to +5V and GND to ground.
- Ensure the power supply voltage is within the specified range (4.75V to 5.25V).
Input Connections:
- Connect the inputs (pins 1, 2, 4, 5, 10, 11, 13, 14) to either logic high (V_CC) or logic low (GND).
- Inputs should be driven by signals that meet the input voltage levels (V_IH and V_IL).
Output Connections:
- The outputs (pins 3, 6, 8, 9) will provide logic high or low based on the inputs.
- Ensure the load connected to the output does not exceed the maximum current ratings (I_OL and I_OH).
Propagation Delay:
- The propagation delay time (t_pd) is the time it takes for a change in input to affect the output. It typically ranges from 9 to 15 nanoseconds at V_CC = 5V.
Power Dissipation:
- The total power dissipation for the package should not exceed 100 to 150 mW to avoid overheating.
Handling:
- Handle the IC with care to avoid static damage.
- Use proper heat sinks or cooling methods if operating at high power levels.
Storage:
- Store the IC in a dry, cool place to prevent moisture damage.
Testing:
- Before integrating the 74LS02 into a circuit, test it using a simple circuit to ensure it functions correctly.

By following these parameters and instructions, you can effectively use the 74LS02 Quad 2-Input OR Gate in your digital circuits.

(For reference only)