CD4093B consists of four Schmitt-trigger circuits. Each circuit functions as a two-input NAND gate with Schmitt-trigger action on both inputs. The gate switches at different points for positive- and negative-going signals. The difference between the positive voltage (VP) and the negative voltage (VN) is defined as hysteresis voltage (VH) (see Fig. 2).
The CD4093B types are supplied in 14-lead hermetic dual-in-line ceramic packages (F3A suffix),
14-lead dual-in-line plastic packages (E suffix), 14-lead small-outline packages (M, MT, M96, and NSR suffixes),
and 14-lead thin shrink small-outline packages (PW and PWR suffixes).
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