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STMP3550B144-TA4 Price| | | | | | | | COMMON EMITTER | | | | | | | | | Ta =250C | | lB - | - 5 | mA | -10 | | } | l_h|n|j | | | | | ~|j | | | | 7 | | | | | | | | | | | | | | |j | j | | 100 | | | | | | | | | | } | | f | j | | | | | | | | | | | | 7 | | j | j | | | | | | | | | | | | fj | | | | r | | | | | | | | | | | | r | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
STMP3550B144-TA4 on stock| PIN NUMBER | SYMBOL | FUNCTION | | 1 13 | OEO, OE1 | Output enable input (active-Low) | | 7, 8, 9, 10, 11 | AO-A9 | Data inputs | | 23, 22, 21, 20, 19, 18, 17, 16, 15, 14 | YO-Y9 | Data outputs | | 10 | GND | Ground (OV) | | 20 | Vcc | Positive supply voltage | | | |
The oscillator frequency is set by the combination of a resistor from the reference to the RT/CT pin and by a capacitor from this pin to ground. The oscillator is designed to have ramp amplitude from 0.15 t0 2.5 volts. This is approximate, as over shoot on the oscillator comparator causes the ramp amplitude to increase with frequency due to comparator delay. Minimum values for CT and RT are 33pF and lkl respectively. Maximum values are depen- dent on leakage currents in the capacitor, not on the input currents to the RT/CT pin.
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