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| INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: * The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC * The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC HEF4512B MSI 8-input multiplexer with 3-state output Product specification File under Integrated Circuits, IC04 January 1995 Philips Semiconductors Product specification 8-input multiplexer with 3-state output 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 HEF4512B MSI 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.2 Pinning diagram. HEF4512BP(N): HEF4512BD(F): HEF4512BT(D): Fig.1 Functional diagram. 16-lead DIL; plastic (SOT38-1) 16-lead DIL; ceramic (cerdip) (SOT74) 16-lead SO; plastic (SOT109-1) ( ): Package Designator North America PINNING S0, S1, S2 EO E I0 to I7 O select inputs output enable (active LOW) enable (active LOW) multiplexer inputs multiplexer output FAMILY DATA, IDD LIMITS category MSI See Family Specifications January 1995 2 This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in _white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ... January 1995 3 Fig.3 Logic diagram. Philips Semiconductors 8-input multiplexer with 3-state output HEF4512B MSI Product specification Philips Semiconductors Product specification 8-input multiplexer with 3-state output TRUTH TABLE INPUTS EO L L L L L L L L L L L L L L L L L H Notes 1. H = HIGH state (the more positive voltage) L = LOW state (the less positive voltage) X = state is immaterial Z = high impedance OFF-state AC CHARACTERISTICS VSS = 0 V; Tamb = 25 C; input transition times 20 ns VDD V Dynamic power dissipation per package (P) 5 10 15 TYPICAL FORMULA FOR P (W) 500 fi + (foCL) x VDD2 2100 fi + (foCL) x VDD 2 HEF4512B MSI OUTPUT I2 X X X X X L H X X X X X X X X X X X I3 X X X X X X X L H X X X X X X X X X I4 X X X X X X X X X L H X X X X X X X I5 X X X X X X X X X X X L H X X X X X I6 X X X X X X X X X X X X X L H X X X I7 X X X X X X X X X X X X X X X L H X O L L H L H L H L H L H L H L H L H Z E H L L L L L L L L L L L L L L L L X S2 X L L L L L L L L H H H H H H H H X S1 X L L L L H H H H L L L L H H H H X S0 X L L H H L L H H L L H H L L H H X I0 X L H X X X X X X X X X X X X X X X I1 X X X L H X X X X X X X X X X X X X where fi = input freq. (MHz) fo = output freq. (MHz) CL = load capacitance (pF) (foCL) = sum of outputs VDD = supply voltage (V) 5800 fi + (foCL) x VDD2 January 1995 4 Philips Semiconductors Product specification 8-input multiplexer with 3-state output AC CHARACTERISTICS VSS = 0 V; Tamb = 25 C; CL = 50 pF; input transition times 20 ns VDD V Propagation delays In O HIGH to LOW 5 10 15 5 LOW to HIGH Sn O HIGH to LOW 10 15 5 10 15 5 LOW to HIGH EO HIGH to LOW 10 15 5 10 15 5 LOW to HIGH Output transition times HIGH to LOW 10 15 5 10 15 5 LOW to HIGH 3-state propagation delays Output disable times EO O HIGH 5 10 15 5 LOW Output enable times EO O HIGH 5 10 15 tPZH 35 15 10 70 30 20 ns ns ns 10 15 tPLZ tPHZ 35 20 15 35 15 10 70 40 30 70 30 20 ns ns ns ns ns ns 10 15 tTLH tTHL tPLH tPHL tPLH tPHL tPLH tPHL 100 40 30 100 40 30 140 55 40 150 60 40 60 25 20 55 25 20 60 30 20 60 30 20 200 80 60 200 80 60 280 110 80 300 120 80 120 50 40 110 50 40 120 60 40 120 60 40 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 73 ns 29 ns 22 ns 73 ns 29 ns 22 ns 113 ns 44 ns 32 ns 123 ns 49 ns 32 ns 33 ns 14 ns 12 ns 28 ns 14 ns 12 ns 10 ns 9 ns 6 ns 10 ns 9 ns 6 ns + + + + + + + + + + + + + + + + + + + + + + + + SYMBOL TYP. MAX. HEF4512B MSI TYPICAL EXTRAPOLATION FORMULA (0,55 ns/pF) CL (0,23 ns/pF) CL (0,16 ns/pF) CL (0,55 ns/pF) CL (0,23 ns/pF) CL (0,16 ns/pF) CL (0,55 ns/pF) CL (0,23 ns/pF) CL (0,16 ns/pF) CL (0,55 ns/pF) CL (0,23 ns/pF) CL (0,16 ns/pF) CL (0,55 ns/pF) CL (0,23 ns/pF) CL (0,16 ns/pF) CL (0,55 ns/pF) CL (0,23 ns/pF) CL (0,16 ns/pF) CL (1,0 ns/pF) CL (0,42 ns/pF) CL (0,28 ns/pF) CL (1,0 ns/pf) CL (0,42 ns/pF) CL (0,28 ns/pF) CL January 1995 5 Philips Semiconductors Product specification 8-input multiplexer with 3-state output HEF4512B MSI MAX. 70 40 30 ns ns ns TYPICAL EXTRAPOLATION FORMULA VDD V 5 LOW 10 15 APPLICATION INFORMATION SYMBOL TYP. 35 tPZL 20 15 Some examples of applications for the HEF4512B are: * Signal gating * Digital multiplexing * Number sequence generation January 1995 6 Philips Semiconductors Product specification 8-input multiplexer with 3-state output TRUTH TABLE for Fig. 4 A4 L L L L L L L L L L L L L L L L H H H H H H H H H H H H H H H H A3 L L L L L L L L H H H H H H H H L L L L L L L L H H H H H H H H A2 L L L L H H H H L L L L H H H H L L L L H H H H L L L L H H H H A1 L L H H L L H H L L H H L L H H L L H H L L H H L L H H L L H H A0 L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H L H INPUT CONN. TO OUTPUT 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 via IC 3 via IC 2 via IC 1 via IC 0 HEF4512B MSI Fig.4 32-input multiplexer using 4 x HEF4512B and 1 x HEF4011B. The input is selected by 5-bit address (A4 to A0) and presented at the output. January 1995 7 |
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