Logic Gates Quad 2-In Schmt NAND BRAND- STM PACKAGE - DIP14 DATASHEET

The MAX232 device is a dual driver/receiver that includes a capacitive voltage generator to supply TIA/EIA-232-F voltage levels from a single 5V supply. Each receiver converts TIA/EIA-232-F inputs to 5V TTL/CMOS levels. These receivers have a typical threshold of 1.3 V, a typical hysteresis of 0.5V, and can accept ±30V inputs. Each driver converts TTL/CMOS input levels into TIA/EIA-232-F levels. Brand : Texas Instruments DATASHEET

The MAX7219 is a compact, serial input/ output common-cathode display drivers that interface microprocessors (μPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Brand : MAXIM Datasheet

The MC3303 and the MC3403 are quadruple operational amplifiers similar in performance to the uA741, but with several distinct advantages. They are designed to operate from a single supply over a range of voltages from 3 V to 36 V. BRAND  - TEXAS PACKAGE  - SOIC -14 DATASHEET