74LS191 | Synchronous 4-Bit Up/Down Counter with Mode Control | FAIRCHILD[Fairchild Semiconductor] | ![FAIRCHILD[Fairchild Semiconductor]的LOGO](/PdfSupLogo/51FAIRCHILD.GIF) | 72.73 Kbytes | 共6页 |  | 54191,DM54LS190,HEF40160B,CD54AC193,SN54190,HEF40161B,HEF40162B,HEF40163B,DM74LS193,HCF40161B |
74LS191 | Synchronous Up/Down 4-bit Binary Counters(single clock line) | HITACHI[Hitachi Semiconductor] | ![HITACHI[Hitachi Semiconductor]的LOGO](/PdfSupLogo/63HITACHI.GIF) | 98.42 Kbytes | 共7页 |  | SN54ALS193A,HD74HC190,HD74HC192,SN54ALS161B,SN54192,SN54ALS169B,DM74LS161A,HD74LS669,SN54ALS191A,SN54ALS569A |