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74HC4515 Datasheet(PDF) 2 Page - NXP Semiconductors |
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74HC4515 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 8 page September 1993 2 Philips Semiconductors Product specification 4-to-16 line decoder/demultiplexer with input latches; inverting 74HC/HCT4515 FEATURES • Inverting outputs • Output capability: standard • ICC category: MSI GENERAL DESCRIPTION The 74HC/HCT4515 are high-speed Si-gate CMOS devices and are pin compatible with “4515” of the “4000B” series. They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT4515 are 4-to-16 line decoders/demultiplexers having four binary weighted address inputs (A0 to A3) with latches, a latch enable input (LE), and an active LOW enable input (E). The 16 inverting outputs (Q0 to Q15) are mutually exclusive active LOW. When LE is HIGH, the selected output is determined by the data on An. When LE goes LOW, the last data present at An are stored in the latches and the outputs remain stable. When E is LOW, the selected output, determined by the contents of the latch, is LOW. When E is HIGH, all outputs are HIGH. The enable input (E) does not affect the state of the latch. When the “4515” is used as a demultiplexer, E is the data input and A0 to A3 are the address inputs. QUICK REFERENCE DATA GND = 0 V; Tamb =25 °C; tr =tf = 6 ns Notes 1. CPD is used to determine the dynamic power dissipation (PD in µW): PD =CPD × VCC2 × fi +∑ (CL × VCC2 × fo) where: fi = input frequency in MHz fo = output frequency in MHz ∑ (CL × VCC2 × fo) = sum of outputs CL = output load capacitance in pF VCC = supply voltage in V 2. For HC the condition is VI = GND to VCC For HCT the condition is VI = GND to VCC − 1.5 V ORDERING INFORMATION See “74HC/HCT/HCU/HCMOS Logic Package Information”. SYMBOL PARAMETER CONDITIONS TYPICAL UNIT HC HCT tPHL/ tPLH propagation delay An to Qn CL = 15 pF; VCC =5 V 25 26 ns CI input capacitance 3.5 3.5 pF CPD power dissipation capacitance per package notes 1 and 2 44 46 pF |
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