| 143841 | 74LS245 | Octal Bus Transceivers | ON Semiconductor |
| 143842 | 74LS247 | 8CD-to-Seven-Segment Decoders/Drivers(with 15V outputs) | Hitachi Semiconductor |
| 143843 | 74LS247 | LOW POWER SCHOTTKY | ON Semiconductor |
| 143844 | 74LS247 | BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS | Texas Instruments |
| 143845 | 74LS251 | 3-STATE 1-of-8 Line Data Selector/Multiplexer | Fairchild Semiconductor |
| 143846 | 74LS251 | 1 of 8 Data Selectors/Multiplexers(with strobe and three-state outputs) | Hitachi Semiconductor |
| 143847 | 74LS251 | LOW POWER SCHOTTKY | ON Semiconductor |
| 143848 | 74LS251 | DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS | Texas Instruments |
| 143849 | 74LS253 | 3-STATE Data Selector/Multiplexer | Fairchild Semiconductor |
| 143850 | 74LS257 | 3-STATE Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 143851 | 74LS257 | Quadruple 2-line-to-1-line Data Selectors/Multiplexers(with non inverted 3-state outputs) | Hitachi Semiconductor |
| 143852 | 74LS257 | TRI-STATE Quad 2-Data Selectors/Multiplexers | National Semiconductor |
| 143853 | 74LS257 | LOW POWER SCHOTTKY | ON Semiconductor |
| 143854 | 74LS257 | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS | Texas Instruments |
| 143855 | 74LS259 | 8-Bit Addressable Latches | Fairchild Semiconductor |
| 143856 | 74LS260 | DUAL 5-INPUT NOR GATE | Motorola |
| 143857 | 74LS266 | Quad 2-Input Exclusive-NOR Gate with Open-Collector Outputs | Fairchild Semiconductor |
| 143858 | 74LS266 | Quadruple 2-input Exclusive-NOR Gates(with open collector outputs) | Hitachi Semiconductor |
| 143859 | 74LS266 | QUADRUPLE 2-INPUT EXCLUSIVE-NOR GATES WITH OPEN-COLLECTOR OUTPUTS | Texas Instruments |
|
| 143860 | 74LS27 | Triple 3-input Positive NOR Gates | Hitachi Semiconductor |
| 143861 | 74LS273 | 8-Bit Register with Clear | Fairchild Semiconductor |
| 143862 | 74LS273 | Octal D-type Positive-edge-triggered Flip-Flops(with Clear) | Hitachi Semiconductor |
| 143863 | 74LS273 | OCTAL POSITIVE EDGE-TRIGGERED D-TYPE FLIP FLOP WITH RESET | Mitsubishi Electric Corporation |
| 143864 | 74LS273 | OCTAL D FLIP-FLOP WITH CLEAR | Motorola |
| 143865 | 74LS273 | 8-Bit Register with Clear | National Semiconductor |
| 143866 | 74LS273 | LOW POWER SCHOTTKY | ON Semiconductor |
| 143867 | 74LS273 | OCTAL D-TYPE FLIP-FLOP WITH CLEAR | Texas Instruments |
| 143868 | 74LS279 | Quad S-R Latch | Fairchild Semiconductor |
| 143869 | 74LS279 | Quadruple S-R Latches | Hitachi Semiconductor |
| 143870 | 74LS28 | QUAD 2-INPUT NOR BUFFER | Motorola |
| 143871 | 74LS280 | 9-bit Odd/Even Parity Generators/Checkers | Hitachi Semiconductor |
| 143872 | 74LS280 | LOW POWER SCHOTTKY | ON Semiconductor |
| 143873 | 74LS280 | 9-BIT ODD/EVEN PARITY GENERATORS/CHECKERS | Texas Instruments |
| 143874 | 74LS283 | 4-Bit Binary Adders with Fast Carry | National Semiconductor |
| 143875 | 74LS289 | 64BIT RANDOM ACCESS MEMORY | Unknow |
| 143876 | 74LS293 | 4-bit Binary Counters | Hitachi Semiconductor |
| 143877 | 74LS293 | DECADE COUNTER; 4-BIT BINARY COUNTER | Motorola |
| 143878 | 74LS293 | DECADE COUNTER; 4-BIT BINARY COUNTER | ON Semiconductor |
| 143879 | 74LS293 | DECADE AND 4-BIT BINARY COUNTERS | Texas Instruments |
| 143880 | 74LS294 | PROGRAMMABLE FREQUENCY DIVIDERS/DIGITAL TIMERS | Texas Instruments |
