| 151521 | 74163PC | V(cc): +5V; synchronous presettable binary counter | Fairchild Semiconductor |
| 151522 | 74164 | 8 BIT SIPO SHIFT REGISTER | ST Microelectronics |
| 151523 | 74167 | Synchronous Decade Rate Multiplier | Fairchild Semiconductor |
| 151524 | 74173 | 4-bit D-type Register (with 3-state Outputs) | Hitachi Semiconductor |
| 151525 | 74173 | Quad 3-State D Flip-Flop with Common Clock and Reset | Motorola |
| 151526 | 74173 | Quad D-type flip-flop; positive-edge trigger; 3-state | Philips |
| 151527 | 74178 | 4-BIT SHIFT REGISTER | Unknow |
| 151528 | 74180 | 8-BIT PARITY GENERATOR/CHECKER | Unknow |
| 151529 | 74180DC | 8-BIT PARITY GENERATOR/CHECKER | Unknow |
| 151530 | 74180FC | 8-BIT PARITY GENERATOR/CHECKER | Unknow |
| 151531 | 74180PC | 8-BIT PARITY GENERATOR/CHECKER | Unknow |
| 151532 | 74181 | 4 Bit Arithmetic Logic Unit | Philips |
| 151533 | 74188 | Families of Compatible TTL Circuits | Texas Instruments |
| 151534 | 74190 | SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL | Texas Instruments |
| 151535 | 74191 | Synchronous 4-Bit Up/Down Counter with Mode Control | Fairchild Semiconductor |
| 151536 | 74191 | Synchronous Up/Down 4-Bit Binary Counter with Mode Control | National Semiconductor |
| 151537 | 74192 | SYNCHRONOUS UP/DOWN DECADE(,BINARY) COUNTER | SGS Thomson Microelectronics |
| 151538 | 74192 | SYNCHRONOUS UP/DOWN DECADE(/BINARY) COUNTER | ST Microelectronics |
| 151539 | 74193 | Synchronous 4-Bit Binary Counter with Dual Clock | Fairchild Semiconductor |
|
| 151540 | 74194 | 4 BIT PIPO SHIFT REGISTER | ST Microelectronics |
| 151541 | 74194-M74HC194 | 4 BIT PIPO SHIFT REGISTER | SGS Thomson Microelectronics |
| 151542 | 74195DC | 63 mA; universal 4-bit shift register | National Semiconductor |
| 151543 | 74195DM | 63 mA; universal 4-bit shift register | National Semiconductor |
| 151544 | 74195FC | 63 mA; universal 4-bit shift register | National Semiconductor |
| 151545 | 74195PC | 63mA; universal 4-bit shift register | National Semiconductor |
| 151546 | 74198DC | 8-bit R/L shift register | National Semiconductor |
| 151547 | 74198FC | 8-bit R/L shift register | National Semiconductor |
| 151548 | 74198FM | 8-bit R/L shift register | National Semiconductor |
| 151549 | 74198PC | 8-bit R/L shift register | National Semiconductor |
| 151550 | 74199 | 8-BIT SHIFT REGISTERS | Texas Instruments |
| 151551 | 74221 | Dual Non-Retriggerable Monostable Multivibrator | Fairchild Semiconductor |
| 151552 | 74221 | Dual Monostable Multivibrators (with Schmitt Trigger Input) | Hitachi Semiconductor |
| 151553 | 74221 | Dual non-retriggerable monostable multivibrator with reset | Philips |
| 151554 | 74221 | High Speed CMOS Logic Dual Monostable Multivibrator with Reset | Texas Instruments |
| 151555 | 74240 | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 151556 | 74244 | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 151557 | 74245 | 3-STATE Octal Bus Transceiver | Fairchild Semiconductor |
| 151558 | 7425 | Dual 4-Input NOR Gate | Fairchild Semiconductor |
| 151559 | 74260 | DUAL 5-INPUT NOR GATE | Motorola |
| 151560 | 74260 | Dual 5-Input NOR Gate | National Semiconductor |
