74LS00 |
RFQ for 74LS00 Required Field |
 |
| Product | Manufacturers | Pack | D/C |
| 74LS00 | - | DIP-14 | N/A |
If the level of alcohol is above the legal limit, or 0.16%, part of another quad op amp, IC1d, will turn on both the optional buzzer and LED5. That is an indication of a high level of alcohol present in your blood, and you definitely should not drive.
After a test is taken,the sensor takes a few seconds to ready itself for another test. When the sensor is ready, its input to IC1b, adjusted via R2 to a threshold of 0.5 V, causes LED4 (ready) to light. That, in turn, causes IC1c to reset the rest of the circuitry. The last section of IC1 is biased via R15 and R16, and used to indicate a low-battery condition-when the battery voltage drops below 6.8 V-which could result in an inaccurate breath test.
| Symbol | Parameter | Min | Typ | Max | Unit | |
| VCC | Supply Voltage | 54 74 |
4.5 4.75 |
5.0 5.0 |
5.5 5.25 |
V |
| TA | Operating Ambient Temperature Range | 54 74 |
–55 0 |
25 25 |
125 70 |
°C |
| IOH | Output Current — High | 54,74 | –0. | mA | ||
| IOL | Output Current — Low | 54 74 |
4.0 8.0 |
mA |
