SJ 20288-1993 detail specification for JT54LS160,JT54LS161,JT54LS162,JT54LS163,JT54LS190,JT54LS191,JT54LS192,JT54LS193 type counters of LS-TTL semiconductor integrated circuits
detail specification for JT54LS160,JT54LS161,JT54LS162,JT54LS163,JT54LS190,JT54LS191,JT54LS192,JT54LS193 type counters of LS-TTL semiconductor integrated circuits