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SN75490 Thermal print head drive circuit

Published on Aug 23 2010 // Modulator Demodulator circuits

SN 75490 Thermal print head drive circuit

SN75490 used to drive many popular thermal -type print head , containing six common strobe pulse and the gate drives, each drive has a totem pole output , calibrated output voltage range of 4.75 ~ 3.5V, input Side with TTL and 5V CMOS compatible , the supply current capacity of 30mA. Sink current capacity of 50mA, the standard supply voltage for the persons 5V, has a strobe input. With the SN75490 driver EPN8620 Thermal print head system as shown.