The 74LS21 device contains two independent gates each of which performs the logic NAND function. The 74LS21 feature is an alternate Military/Aerospace device is available. Contact a National Semiconductor Sales Office/ Distributor for specifications.
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The 74LS21 device contains two independent gates each of which performs the logic NAND function. The 74LS21 feature is an alternate Military/Aerospace device is available. Contact a National Semiconductor Sales Office/ Distributor for specifications.
Specification:-
| Symbol | Parameter | Min | Nom | Max | Units |
| VCC | Supply Voltage | 4.5 | 5 | 5.5 | V |
| TA | Operating Ambient Temperature Range | -55 | 25 | 125 | ?C |
| IOH | Output Current ? High | ?0.4 | m A | ||
| IOL | High-level Output Current | 8 | m A |
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Operating voltage | 2.5 3.0V |
Pixel Resolution | 0.3MP |
Photosensitive array | 640 x 480 |
Optical Size | 1.6 inch |
Angel of view | 67 degrees |
Maximum Frame Rate | 30fps VGA |
Sensitivity | 1.3V/(Lux-sec) |
Dormancy | Less than 20A |
Power consumption | 60mW/15fpsVGA YUV |
Temperature operation Range | -30 C ~ 70 C |
Pixel area | 3.6 x 3.6 m |
Signal to noise ratio (SNR) | 46 dB |
Dynamic range | 52 dB |
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