Texas Instruments
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LM339 TI Quad Differential Comparator Data Sheet
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LM239A TI Quad Differential Comparator Data Sheet
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LM239 TI Quad Differential Comparator Data Sheet
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LM139A TI Quad Differential Comparator Data Sheet
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LM139 TI Quad Differential Comparator Data Sheet
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TL494Y Texas Instruments Pulse-Width-Modulation Control Circuit Data Sheet
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TL494M Texas Instruments Pulse-Width-Modulation Control Circuit Data Sheet
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TL494I Texas Instruments Pulse-Width-Modulation Control Circuit Data Sheet
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TL494C Texas Instruments Pulse-Width-Modulation Control Circuit Data Sheet