| TTL Cross Reference (80's) | | | | HD74191 Hitachi | |
| TTL Cross Reference (80's) | | | | HD74191P Hitachi | |
| TTL Cross Reference (80's) | | | | M53391P Mitsubishi | |
| TTL Cross Reference (80's) | | | | MB456 Fujitsu | |
| TTL Cross Reference (80's) | | | | MB456M Fujitsu | |
| TTL Cross Reference (80's) | | | 74LS191M Philips | S54191W Signetics | |
| TTL Cross Reference (80's) | | | Am54LS191 AMD | N74191W Signetics | |
| TTL Cross Reference (80's) | | | Am74LS191 AMD | FLJ211 Siemens | |
| TTL Cross Reference (80's) | | | DM54LS191 National Semiconductor | DM74191W National Semiconductor | |
| TTL Cross Reference (80's) | | | DM74LS191 National Semiconductor | N74191 Signetics | |
| TTL Cross Reference (80's) | | | FC74LS191D Fairchild Semiconductor | FC93191D Fairchild Semiconductor | |
| TTL Cross Reference (80's) | | | FC74LS191F Fairchild Semiconductor | MC74191P Motorola | |
| TTL Cross Reference (80's) | | | FC74LS191P Fairchild Semiconductor | FC93191P Fairchild Semiconductor | |
| TTL Cross Reference (80's) | | | FC9LS191D Fairchild Semiconductor | DM54191J National Semiconductor | |
| TTL Cross Reference (80's) | | | FC9LS191F Fairchild Semiconductor | DM74191J National Semiconductor | |
| TTL Cross Reference (80's) | | | FC9LS191P Fairchild Semiconductor | DM54191W National Semiconductor | |
| TTL Cross Reference (80's) | | | FM54LS191D Fairchild Semiconductor | FM54191D Fairchild Semiconductor | |
| TTL Cross Reference (80's) | | | FM54LS191F Fairchild Semiconductor | FM93191D Fairchild Semiconductor | |
| TTL Cross Reference (80's) | | | FM9LS191D Fairchild Semiconductor | FC74191D Fairchild Semiconductor | |
| TTL Cross Reference (80's) | | | FM9LS191F Fairchild Semiconductor | FC74191P Fairchild Semiconductor | |
| TTL Cross Reference (80's) | | | HD74LS191P Hitachi | N74191F Signetics | |
| TTL Cross Reference (80's) | | | M74LS191P Mitsubishi | N74191B Signetics | |
| TTL Cross Reference (80's) | | | N74LS191 Signetics | S54191F Signetics | |
| TTL Cross Reference (80's) | | | N74LS191A Signetics | S54191B Signetics | |
| TTL Cross Reference (80's) | | | SN54LS191J Texas Instruments | SN54191J Texas Instruments | |
| TTL Cross Reference (80's) | | | SN54LS191W Texas Instruments | SN54191W Texas Instruments | |
| TTL Cross Reference (80's) | | | SN74LS191J Texas Instruments | SN74191J Texas Instruments | |
| TTL Cross Reference (80's) | | | SN74LS191N Texas Instruments | SN74191N Texas Instruments | |
| TTL Cross Reference (80's) | | | SN74LS191P Texas Instruments | DM74191N National Semiconductor | |
