LM393 IC tương tự so sánh chân cắm, chân dán:
- LM393N: kiểu chân DIP(8),hãng: ST; Dual Differential Comparator, Single Supply or Dual Supplies, Vcc: 2V.. 36V.
- LM393D: kiểu chân SOIC(8),hãng TI; Dual Differential Comparator, Single Supply or Dual Supplies, Vcc: 2V.. 36V.