| 161521 | 74F413D-MQB | 64 x 4 First-In First-Out Buffer Memory with Parallel I/O | National Semiconductor |
| 161522 | 74F413D-MQB | 64 x 4 First-In First-Out Buffer Memory with Parallel I/O | National Semiconductor |
| 161523 | 74F413P-CQB | 64 x 4 First-In First-Out Buffer Memory with Parallel I/O | National Semiconductor |
| 161524 | 74F413P-MQB | 64 x 4 First-In First-Out Buffer Memory with Parallel I/O | National Semiconductor |
| 161525 | 74F413PC | 64 x 4 First-In First-Out Buffer Memory with Parallel I/O | Fairchild Semiconductor |
| 161526 | 74F413PC | 64 x 4 First-In First-Out Buffer Memory with Parallel I/O | National Semiconductor |
| 161527 | 74F433 | First-In First-Out (FIFO) Buffer Memory | Fairchild Semiconductor |
| 161528 | 74F433 | First-In First-Out Buffer Memory (FIFO) | National Semiconductor |
| 161529 | 74F433SPC | First-In First-Out (FIFO) Buffer Memory | Fairchild Semiconductor |
| 161530 | 74F455 | Buffers/drivers | Philips |
| 161531 | 74F456 | Octal buffer/driver with parity, non-inverting (3-State) | Philips |
| 161532 | 74F50109 | Synchronizing dual J-K positive edge-triggered flip-flop with metastable immune characteristics | Philips |
| 161533 | 74F50728 | Synchronizing cascaded dual positive edge-triggered D-type flip-flop | Philips |
| 161534 | 74F50729 | Synchronizing dual D-type flip-flop with edge-triggered set and reset with metastable immune characteristics | Philips |
| 161535 | 74F5074 | Synchronizing dual D-type flip-flop/clock driver | Philips |
| 161536 | 74F51 | Dual 2-Wide 2-Input; 2-Wide 3-Input AND-OR-Invert Gate | Fairchild Semiconductor |
| 161537 | 74F51 | Dual 2-Wide 2-Input; 2-Wide 3-Input AND-OR-Invert Gate | National Semiconductor |
| 161538 | 74F51 | Dual 2-wide 2-input, 2-wise 3-input AND-OR-invert gate | Philips |
| 161539 | 74F51PC | Dual 2-Wide 2-Input; 2-Wide 3-Input AND-OR-Invert Gate | Fairchild Semiconductor |
|
| 161540 | 74F51SC | Dual 2-Wide 2-Input; 2-Wide 3-Input AND-OR-Invert Gate | Fairchild Semiconductor |
| 161541 | 74F51SJ | Dual 2-Wide 2-Input; 2-Wide 3-Input AND-OR-Invert Gate | Fairchild Semiconductor |
| 161542 | 74F521 | 8-Bit Identity Comparator | Fairchild Semiconductor |
| 161543 | 74F521 | 8-Bit Identity Comparator | National Semiconductor |
| 161544 | 74F521 | 8-bit identity comparator | Philips |
| 161545 | 74F521CW | 8-Bit Identity Comparator | Fairchild Semiconductor |
| 161546 | 74F521MSA | 8-Bit Identity Comparator | Fairchild Semiconductor |
| 161547 | 74F521MSA | 8-Bit Identity Comparator | National Semiconductor |
| 161548 | 74F521MSAX | 8-Bit Identity Comparator | Fairchild Semiconductor |
| 161549 | 74F521PC | 8-Bit Identity Comparator | Fairchild Semiconductor |
| 161550 | 74F521PC | 8-Bit Identity Comparator | National Semiconductor |
| 161551 | 74F521SC | 8-Bit Identity Comparator | Fairchild Semiconductor |
| 161552 | 74F521SC | 8-Bit Identity Comparator | National Semiconductor |
| 161553 | 74F521SCX | 8-Bit Identity Comparator | Fairchild Semiconductor |
| 161554 | 74F521SJ | 8-Bit Identity Comparator | Fairchild Semiconductor |
| 161555 | 74F521SJ | 8-Bit Identity Comparator | National Semiconductor |
| 161556 | 74F521SJX | 8-Bit Identity Comparator | Fairchild Semiconductor |
| 161557 | 74F524 | 8-Bit Registered Comparator | Fairchild Semiconductor |
| 161558 | 74F524 | 8-Bit Registered Comparator | National Semiconductor |
| 161559 | 74F524 | 8-bit register comparator (open-collector + 3-State) | Philips |
| 161560 | 74F524CW | 8-Bit Registered Comparator | Fairchild Semiconductor |
