| 144521 | 74LS192 | PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER | Motorola |
| 144522 | 74LS192 | PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER | ON Semiconductor |
| 144523 | 74LS193 | Synchronous 4-Bit Binary Counter with Dual Clock | Fairchild Semiconductor |
| 144524 | 74LS193 | Synchronous Up/Down 4-bit Binary Counters(dual clock lines) | Hitachi Semiconductor |
| 144525 | 74LS193 | PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER | Motorola |
| 144526 | 74LS194 | 4-Bit Bidirectional Universal Shift Register | Fairchild Semiconductor |
| 144527 | 74LS194 | LOW POWER SCHOTTKY | ON Semiconductor |
| 144528 | 74LS194A | 4-Bit Bidirectional Universal Shift Register | National Semiconductor |
| 144529 | 74LS194A | LOW POWER SCHOTTKY | ON Semiconductor |
| 144530 | 74LS195 | 4-bit Parallel-Access Shift Registers | Hitachi Semiconductor |
| 144531 | 74LS195 | UNIVERSAL 4-BIT SHIFT REGISTER | Motorola |
| 144532 | 74LS195 | LOW POWER SCHOTTKY | ON Semiconductor |
| 144533 | 74LS195 | 4-BIT PARALLEL-ACCESS SHIFT REGISTERS | Texas Instruments |
| 144534 | 74LS195ADC | 21 mA; universal 4-bit shift register | National Semiconductor |
| 144535 | 74LS195AFC | 21 mA; universal 4-bit shift register | National Semiconductor |
| 144536 | 74LS195APC | 21 mA; universal 4-bit shift register | National Semiconductor |
| 144537 | 74LS196 | 4-STAGE PRESETTABLE RIPPLE COUNTERS | Motorola |
| 144538 | 74LS196 | 50/30/100-MHz [RESETTABLE DECADE OR BINARY COUNTERS/LATCHES | Texas Instruments |
| 144539 | 74LS197 | 4-STAGE PRESETTABLE RIPPLE COUNTERS | Motorola |
|
| 144540 | 74LS20 | Dual 4-Input NAND Gate | Fairchild Semiconductor |
| 144541 | 74LS20 | Dual 4-input Positive NAND Gates | Hitachi Semiconductor |
| 144542 | 74LS20 | DUAL 4-INPUT NAND GATE | Motorola |
| 144543 | 74LS20 | Dual 4-Input NAND Gates | National Semiconductor |
| 144544 | 74LS20 | DUAL 4-INPUT POSITIVE-NAND GATES | Texas Instruments |
| 144545 | 74LS21 | Dual 4-input Positive AND Gates | Hitachi Semiconductor |
| 144546 | 74LS21 | DUAL 4-INPUT POSITIVE-AND GATES | Texas Instruments |
| 144547 | 74LS22 | DUAL 4 INPUT POSITIVE NAND GATES WITH OPEN COLLECTOR OUTPUTS | Texas Instruments |
| 144548 | 74LS221 | Dual Non-Retriggerable One-Shot with Clear and Complementary Outputs | Fairchild Semiconductor |
| 144549 | 74LS221 | LOW POWER SCHOTTKY | ON Semiconductor |
| 144550 | 74LS221N | DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS | Motorola |
| 144551 | 74LS221N | LOW POWER SCHOTTKY | ON Semiconductor |
| 144552 | 74LS240 | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 144553 | 74LS240 | Octal Buffers/Line Drivers/Line Receivers(inverted three-state outputs) | Hitachi Semiconductor |
| 144554 | 74LS240 | Octal TRI-STATE Buffers/Line Drivers/Line Receivers | National Semiconductor |
| 144555 | 74LS240 | LOW POWER SCHOTTKY | ON Semiconductor |
| 144556 | 74LS240 | OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS | Texas Instruments |
| 144557 | 74LS241 | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 144558 | 74LS241 | Octal Buffers/Line Drivers/Line Receivers | Hitachi Semiconductor |
| 144559 | 74LS241 | OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS | Motorola |
| 144560 | 74LS241 | Octal TRI-STATE Buffers/Line Drivers/Line Receivers | National Semiconductor |
