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74HC27DB from PHILIPS, Philips 1898pcs , SSOP 5.2,74HC/HCT27; Triple 3-input NOR gate
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74HC27DB PHILIPS N/a 1898

GENERAL DESCRIPTION• Output capability: standard The 74HC/HCT27 are high-speed Si-gate CMOS devicesand are pin compatible with low power Schottky TTL• I category: SSICC(LSTTL). They are specified in compliance with JEDECstandard no. 7A.The 74HC/HCT27 provide the 3-input NOR function.QUICK REFERENCE DATAGND = 0 V; T =25°C; t =t = 6 nsamb r fTYPICALSYMBOL PARAMETER CONDITIONS UNITHC HCTt / t propagation delay nA, nB, nC to nY C = 15 pF; V = 5 V 8 10 nsPHL PLH L CCC input capacitance 3.5 3.5 pFIC power dissipation capacitance per gate notes 1 and 2 24 30 pFPDNotes1. C is used to determine the dynamic power dissipation (P in μW):PD D2 2P =C × V × f +∑ (C × V × f ) where:D PD CC i L CC Of = input frequency in MHzif = output frequency in MHzo2∑ (C × V × f ) = sum of outputsL CC oC = output load capacitance in pFLV = supply voltage in VCC2. For HC the condition is V = GND to VI CCFor HCT the condition is V = GND to V - 1.5 VI CCORDERING INFORMATIONSee“74HC/HCT/HCU/HCMOS Logic Package Information”.December 1990 2Philips Semiconductors Product specificationTriple 3-input NOR gate 74HC/HCT27PIN DESCRIPTIONPIN NO. SYMBOL NAME AND FUNCTION1, 3, 9 1A to 3A data inputs2, 4, 10 1B to 3B data inputs13, 5, 11 1C to 3C data inputs7 GND ground (0 V)12, 6, 8 1Y to 3Y data outputs14 V positive supply voltageCCFig.1
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