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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 HEF4511B MSI BCD to 7-segment latch/decoder/driver Product specification File under Integrated Circuits, IC04 January 1995 Philips Semiconductors Product specification BCD to 7-segment latch/decoder/driver DESCRIPTION The HEF4511B is a BCD to 7-segment latch/decoder/driver with four address inputs (DA to DD), an active LOW latch enable input (EL), an active LOW ripple blanking input (BI), an active LOW lamp test input (LT), and seven active HIGH n-p-n bipolar transistor segment outputs (Oa to Og). HEF4511B MSI When EL is LOW, the state of the segment outputs (Oa to Og) is determined by the data on DA to DD. When EL goes HIGH, the last data present on DA to DD are stored in the latches and the segment outputs remain stable. When LT is LOW, all the segment outputs are HIGH independent of all other input conditions. With LT HIGH, a LOW on BI forces all segment outputs LOW. The inputs LT and BI do not affect the latch circuit. Fig.2 Pinning diagram. HEF4511BP(N): HEF4511BD(F): HEF4511BT(D): 16-lead DIL; plastic (SOT38-1) 16-lead DIL; ceramic (cerdip) (SOT74) 16-lead SO; plastic (SOT109-1) ( ): Package Designator North America Fig.1 Functional diagram. PINNING DA to DD EL BI LT Oa to Og address (data) inputs latch enable input (active LOW) ripple blanking input (active LOW) lamp test input (active LOW) segment outputs Fig.4 Segment designation. FAMILY DATA, IDD LIMITS category MSI Fig.3 Schematic diagram of output stage. 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.5 Logic diagram; for one latch see Fig.6. Philips Semiconductors BCD to 7-segment latch/decoder/driver HEF4511B MSI Product specification Philips Semiconductors Product specification BCD to 7-segment latch/decoder/driver HEF4511B MSI Fig.6 Logic diagram (one latch); see also Fig.5. FUNCTION TABLE INPUTS EL X X L L L L L L L L L L L L L L L L H Note 1. H = HIGH state (the more positive voltage) L = LOW state (the less positive voltage) X = state is immaterial * Depends upon the BCD code applied during the LOW to HIGH transition of EL. BI X L H H H H H H H H H H H H H H H H H LT L H H H H H H H H H H H H H H H H H H DD X X L L L L L L L L H H H H H H H H X DC X X L L L L H H H H L L L L H H H H X DB X X L L H H L L H H L L H H L L H H X DA X X L H L H L H L H L H L H L H L H X Oa H L H L H H L H L H H H L