Linear ICs for analog work: general-purpose and precision op amps (741, LM358, LM324, TL06x, OP482, AD744), CMOS rail-to-rail op amps (LMC6482), comparators (LM311, LM339, LM393, LM2903), instrumentation and differential amps (INA105), and audio power amplifier ICs.
Read the package suffix: on National and TI parts, N or P usually means plastic DIP and M or D means SOIC, and National uses H for a metal can. Other makers use other letters.
A comparator is not an op amp. Comparators usually have open-collector outputs that need a pull-up resistor and are built to switch, not to run with negative feedback, so replace like with like.
Makers include National Semiconductor, Texas Instruments, Motorola, STMicroelectronics, Burr-Brown, Analog Devices, Maxim and PMI.
Related: Analog & Signal, Voltage Regulators and all integrated circuits.
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