| 137921 | 74F543 | Octal Registered Transceiver | Fairchild Semiconductor |
| 137922 | 74F543 | Octal Registered Transceiver | National Semiconductor |
| 137923 | 74F543 | Octal registered transceiver,inverting (3-State) | Philips |
| 137924 | 74F543DB | Octal registered transceiver, non-inverting 3-State | Philips |
| 137925 | 74F543MSA | Octal Registered Transceiver | Fairchild Semiconductor |
| 137926 | 74F543MSAX | Octal Registered Transceiver | Fairchild Semiconductor |
| 137927 | 74F543PC | Octal Registered Transceiver | Fairchild Semiconductor |
| 137928 | 74F543SC | Octal Registered Transceiver | Fairchild Semiconductor |
| 137929 | 74F543SCX | Octal Registered Transceiver | Fairchild Semiconductor |
| 137930 | 74F543SPC | Octal Registered Transceiver | Fairchild Semiconductor |
| 137931 | 74F544 | Octal Registered Transceiver | Fairchild Semiconductor |
| 137932 | 74F544 | Octal Registered Transceiver (Inverting in Both Directions) | National Semiconductor |
| 137933 | 74F544 | Octal registered transceiver,inverting (3-State) | Philips |
| 137934 | 74F544MSA | Octal Registered Transceiver | Fairchild Semiconductor |
| 137935 | 74F544MSA | Octal Registered Transceiver | National Semiconductor |
| 137936 | 74F544MSAX | Octal Registered Transceiver | Fairchild Semiconductor |
| 137937 | 74F544SC | Octal Registered Transceiver | Fairchild Semiconductor |
| 137938 | 74F544SC | Octal Registered Transceiver | Fairchild Semiconductor |
| 137939 | 74F544SC | Octal Registered Transceiver | National Semiconductor |
|
| 137940 | 74F544SCX | Octal Registered Transceiver | Fairchild Semiconductor |
| 137941 | 74F544SPC | Octal Registered Transceiver | Fairchild Semiconductor |
| 137942 | 74F544SPC | Octal Registered Transceiver | National Semiconductor |
| 137943 | 74F545 | Octal Bidirectional Transceiver with 3-STATE Outputs | Fairchild Semiconductor |
| 137944 | 74F545 | Octal Bidirectional Transceiver with TRI-STATE Inputs/Outputs | National Semiconductor |
| 137945 | 74F545 | Octal bidirectional transceiver (with 3-State inputs/outputs) | Philips |
| 137946 | 74F545PC | Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs | Fairchild Semiconductor |
| 137947 | 74F545PC | Octal Bidirectional Transceiver with TRI-STATEE Outputs | National Semiconductor |
| 137948 | 74F545SC | Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs | Fairchild Semiconductor |
| 137949 | 74F545SC | Octal Bidirectional Transceiver with TRI-STATEE Outputs | National Semiconductor |
| 137950 | 74F545SCX | Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs | Fairchild Semiconductor |
| 137951 | 74F545SJ | Octal Bidirectional Transceiver with TRI-STATEE Outputs | National Semiconductor |
| 137952 | 74F552 | Octal Registered Transceiver with Parity and Flags | Fairchild Semiconductor |
| 137953 | 74F552 | Octal Registered Transceiver with Parity and Flags | National Semiconductor |
| 137954 | 74F552 | Octal registered transceiver with parity and flags (3-State) | Philips |
| 137955 | 74F552QC | Octal Registered Transceiver with Parity and Flags | Fairchild Semiconductor |
| 137956 | 74F552SC | Octal Registered Transceiver with Parity and Flags | Fairchild Semiconductor |
| 137957 | 74F552SCX | Octal Registered Transceiver with Parity and Flags | Fairchild Semiconductor |
| 137958 | 74F563 | Octal D-Type Latch with 3-STATE Outputs | Fairchild Semiconductor |
| 137959 | 74F563 | Octal D Latch with TRI-STATE Outputs | National Semiconductor |
| 137960 | 74F563PC | Octal D-Type Latch with 3-STATE Outputs | Fairchild Semiconductor |
