Philips Electronics
Quad voltage comparator
STMicroelectronics
LOW POWER QUAD BIPOLAR OPERATIONAL AMPLIFIERS
Motorola => Freescale
Quad Single Supply Comparators
ON Semiconductor
Single Supply Quad Operational Amplifiers
Motorola => Freescale
Quad Single Supply Operational Amplifiers
Motorola => Freescale
Dual, Low Noise Operational Amplifier
ON Semiconductor
Single Supply 3.0 V to 44 V Operational Amplifiers