| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
| 74HCT280D,653 | NXP | 74HC(T)280 - 9-bit odd/even parity generator/checker SOIC 14-Pin | |
| SN74LS85DE4 | Texas Instruments | 4-bit magnitude comparators 16-SOIC 0 to 70 | |
 | AD538AD | Analog Devices | Analog Computational Unit 1Bit 18-Pin SBCDIP Tube |
 | MC10E166FNG | Onsemi | 5.0 V ECL 9-Bit Magnitude Comparator, 28 LEAD PLCC, 37-TUBE |
| SN74HC688DWE4 | Texas Instruments | 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-SOIC -40 to 85 | |
 | M74HC688RM13TR | Stmicroelectronics | HC/UH SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, PDSO20, SO-20 |
| SN74HC688DWRG4 | Texas Instruments | 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-SOIC -40 to 85 | |
 | CD4063BEE4 | Texas Instruments | 4-Bit Magnitude Comparators 16-PDIP -55 to 125 |
| SN74HC688DWRE4 | Texas Instruments | 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-SOIC -40 to 85 | |
| M74HC280RM13TR | Stmicroelectronics | 9 Bit Parity Generator | |
| SN74HC688DWG4 | Texas Instruments | 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-SOIC -40 to 85 | |
 | SN74HC684DWR | Texas Instruments | 8-Bit Identity/Magnitude Comparators 20-SOIC -40 to 85 |
| SN74HC688PWTG4 | Texas Instruments | 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-TSSOP -40 to 85 | |
 | SN74F283NSRG4 | Texas Instruments | 4-Bit Binary Full Adders With Fast Carry 16-SO 0 to 70 |
| SN74ALS518DWE4 | Texas Instruments | 8-Bit Identity Comparators (P=Q) w/ Enable, Open Collector Outputs, 20K Ohm Q-Input Pullup Resistor 20-SOIC 0 to 70 | |
| SN74HC688PWRE4 | Texas Instruments | 8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-TSSOP -40 to 85 | |
 | TC74HC283AFN(M) | Toshiba | Binary Full Adder Single-Element 4-Bit 16-Pin SOL |
| SN74F521NSRG4 | Texas Instruments | F/FAST SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, PDSO20, GREEN, PLASTIC, SOP-20 | |
 | MC10E166FNR2G | Onsemi | 10E SERIES, 9-BIT MAGNITUDE COMPARATOR, TRUE OUTPUT, PQCC28, LEAD FREE, PLASTIC, LCC-28 |
| SN74LS85DRE4 | Texas Instruments | 4-bit magnitude comparators 16-SOIC 0 to 70 |