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A question about 74LS04 IC (a Schmitt Trigger). The pictures show the 74LS04 logic, the connection required and data sheet. Question a)In order to light up the LED, what should Pin 1 and Point A connected to? Ans: Pin 1 connected to (5V / GND), Point A connected to (5V / GND). b)In this example, the power that lights up the LED comes from where? c)What is the current shown on the multi-meter? Is the current flowing out from Pin 2 or flowing into the Pin 2?

A question about 74LS04 IC (a Schmitt Trigger). The pictures show the 74LS04 logic, the connection required and data sheet. Question a)In order to light up the LED, what should Pin 1 and Point A connected to? Ans: Pin 1 connected to (5V / GND), Point A connected to (5V / GND). b)In this example, the power that lights up the LED comes from where? c)What is the current shown on the multi-meter? Is the current flowing out from Pin 2 or flowing into the Pin 2?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter17: Commercial And Industrial Air-conditioning Control Systems
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A question about 74LS04 IC (a Schmitt Trigger). The pictures show the 74LS04 logic, the connection required and data sheet. Question a)In order to light up the LED, what should Pin 1 and Point A connected to? Ans: Pin 1 connected to (5V / GND), Point A connected to (5V / GND). b)In this example, the power that lights up the LED comes from where? c)What is the current shown on the multi-meter? Is the current flowing out from Pin 2 or flowing into the Pin 2?
GUARANTEED OPERATING RANGES Symbol Parameter Min Тур Мах Unit Vcc Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 -55 25 125 °C 74 25 70 IOH Output Current- High 54, 74 -0.4 mA lOL Output Current- Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-1 SN54/74LS04 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Тур Маx Unit Test Conditions Guaranteed Input HIGH Voltage for All Inputs VIH Input HIGH Voltage 2.0 V 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage V All Inputs 74 0.8 VIK Input Clamp Diode Voltage |-0.65 -1.5 V Vcc = MIN, IjN = -18 mA 54 2.5 3.5 V Vcc = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table VOH Output HIGH Voltage 74 2.7 3.5 Vcc = Vcc MIN, VIN = VIL or VIH per Truth Table 54, 74 0.25 0.4 V IOL = 4.0 mA VOL Output LOW Voltage 74 0.35 0.5 0.5 V lOL = 8.0 mA 20 HA Vcc = MAX, VIN = 2.7 V IH Input HIGH Current 0.1 mA Vcc = MAX, VIN = 7.0 V IL Input LOW Current -0.4 Vcc = MAX, VIN = 0.4 V mA los Short Circuit Current (Note 1) -20 -100 Vcc = MAX Power Supply Current Total, Output HIGH 2.4 Ic Vcc = MAX mA Total, Output Low 6.6 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Limits Symbol Min Тур Max Test Conditions Parameter Unit tPLH Turn-Off Delay, Input to Output 9.0 15 Vcc = 5.0 V CL = 15 pF ns tPHL Turn-On Delay, Input to Output 10 15 ns
Transcribed Image Text:GUARANTEED OPERATING RANGES Symbol Parameter Min Тур Мах Unit Vcc Supply Voltage 54 4.5 5.0 5.5 V 74 4.75 5.0 5.25 TA Operating Ambient Temperature Range 54 -55 25 125 °C 74 25 70 IOH Output Current- High 54, 74 -0.4 mA lOL Output Current- Low 54 4.0 mA 74 8.0 FAST AND LS TTL DATA 5-1 SN54/74LS04 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Тур Маx Unit Test Conditions Guaranteed Input HIGH Voltage for All Inputs VIH Input HIGH Voltage 2.0 V 54 0.7 Guaranteed Input LOW Voltage for VIL Input LOW Voltage V All Inputs 74 0.8 VIK Input Clamp Diode Voltage |-0.65 -1.5 V Vcc = MIN, IjN = -18 mA 54 2.5 3.5 V Vcc = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table VOH Output HIGH Voltage 74 2.7 3.5 Vcc = Vcc MIN, VIN = VIL or VIH per Truth Table 54, 74 0.25 0.4 V IOL = 4.0 mA VOL Output LOW Voltage 74 0.35 0.5 0.5 V lOL = 8.0 mA 20 HA Vcc = MAX, VIN = 2.7 V IH Input HIGH Current 0.1 mA Vcc = MAX, VIN = 7.0 V IL Input LOW Current -0.4 Vcc = MAX, VIN = 0.4 V mA los Short Circuit Current (Note 1) -20 -100 Vcc = MAX Power Supply Current Total, Output HIGH 2.4 Ic Vcc = MAX mA Total, Output Low 6.6 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Limits Symbol Min Тур Max Test Conditions Parameter Unit tPLH Turn-Off Delay, Input to Output 9.0 15 Vcc = 5.0 V CL = 15 pF ns tPHL Turn-On Delay, Input to Output 10 15 ns
Vcc 14 13 12 11 10 9 8 3 4 5 6 GND make the following connections: 74LS04 Pin 1 Point A 3302 Pin 2
Transcribed Image Text:Vcc 14 13 12 11 10 9 8 3 4 5 6 GND make the following connections: 74LS04 Pin 1 Point A 3302 Pin 2
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