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HEF4512BP Datasheet(PDF) 2 Page - NXP Semiconductors |
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HEF4512BP Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 7 page January 1995 2 Philips Semiconductors Product specification 8-input multiplexer with 3-state output HEF4512B MSI DESCRIPTION The HEF4512B is an 8-input multiplexer with 8 binary inputs (I0 to I7), an enable input (E) and an output enable input (EO). One of eight binary inputs is selected by select inputs S0, S1 and S2, and is routed to the output O. A HIGH on EO causes O to assume a high impedance OFF-state, regardless of other input conditions. This allows the output to interface directly with bus oriented systems (3-state). When the active LOW enable (E) is HIGH, it forces the output LOW provided EO is LOW. By proper manipulation of the inputs, the device can provide any logic functions of four variables. It cannot be used to multiplex analogue signals. Fig.1 Functional diagram. HEF4512BP(N): 16-lead DIL; plastic (SOT38-1) HEF4512BD(F): 16-lead DIL; ceramic (cerdip) (SOT74) HEF4512BT(D): 16-lead SO; plastic (SOT109-1) ( ): Package Designator North America Fig.2 Pinning diagram. PINNING FAMILY DATA, IDD LIMITS category MSI See Family Specifications S0,S1, S2 select inputs EO output enable (active LOW) E enable (active LOW) I0 to I7 multiplexer inputs O multiplexer output |
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