74HC/HCT21 Download

partno	mfr	description	Magnitude	download
74HC/HCT21	PHILIPS	Philips Semiconductors [Dual 4-input AND gate]	37k

INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: ? The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications ? The IC06 74HC/HCT/HCU/HCMOS Logic Package Information ? The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines 74HC/HCT21 Dual 4-input AND gate Product specification File under Integrated Circuits, IC06 December 1990 Philips Semiconductors Product specification Dual 4-input AND gate FEATURES ? Output capability: standard ? ICC category: SSI GENERAL DESCRIPTION 74HC/HCT21 The 74HC/HCT21 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT21 provide the 4-input AND function. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 ?C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH CI CPD Notes 1. CPD is used to determine the dynamic power dissipation (PD in ?W): PD = CPD ? VCC2 ? fi + (CL ? VCC2 ? fO) where: fi = input frequency in MHz fo = output frequency in MHz CL = output load capacitance in pF VCC = supply voltage in V (CL ? VCC2 ? fo) = sum of outputs 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". PARAMETER propagation delay nA, nB, nC, nD to nY input capacitance power dissipation capacitance per package notes 1 and 2 CONDITIONS HC CL = 15 pF; VCC = 5 V 10 3.5 15 HCT 12 3.5 16 ns pF pF UNIT December 1990 2 Philips Semiconductors Product specification Dual 4-input AND gate PIN DESCRIPTION PIN NO. 1, 9 2, 10 3, 11 4, 12 5, 13 6, 8 7 14 SYMBOL 1A, 2A 1B, 2B n.c. 1C, 2C 1D, 2D 1Y, 2Y GND VCC NAME AND FUNCTION data inputs data inputs not connected data inputs data inputs data outputs ground (0 V) positive supply voltage 74HC/HCT21 Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol. December 1990 3 Philips Semiconductors Product specification Dual 4-input AND gate 74HC/HCT21 Fig.4 Functional diagram. Fig.5 Logic diagram (one gate). FUNCTION TABLE INPUTS nA L X X X H Notes 1. H = HIGH voltage level L = LOW voltage level X = don't care nB X L X X H nC X X L X H nD X X X L H OUTPUT nY L L L L H December 1990 4 Philips Semiconductors Product specification Dual 4-input AND gate DC CHARACTERISTICS FOR 74HC For the DC characteristics see "74HC/HCT/HCU/HCMOS Logic Family Specifications". Output capability: standard ICC category: SSI AC CHARACTERISTICS FOR 74HC GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (?C) 74HC SYMBOL PARAMETER +25 min. typ. tPHL/ tPLH propagation delay nA, nB, nC, nD to nY 33 12 10 tTHL/ tTLH output transition time 19 7 6 max. 110 22 19 75 15 13 -40 to+85 min. max. 140 28 24 95 19 16 -40 to+125 min. max. 165 33 28 110 22 19 ns ns UNIT 74HC/HCT21 TEST CONDITIONS VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 Fig.6 WAVEFORMS Fig.6 December 1990 5 Philips Semiconductors Product specification Dual 4-input AND gate DC CHARACTERISTICS FOR 74HCT For the DC characteristics see "74HC/HCT/HCU/HCMOS Logic Family Specifications". Output capability: standard ICC category: SSI Note to HCT types 74HC/HCT21 The value of additional quiescent supply current (ICC) for a unit load of 1 is given in the family specifications. To determine ICC per input, multiply this value by the unit load coefficient shown in the table below. INPUT nA, nB, nC, nD UNIT LOAD COEFFICIENT 1.50 1.50 AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (?C) 74HCT SYMBOL PARAMETER +25 min. tPHL/ tPLH tTHL/ tTLH propagation delay nA, nB nC, nD to nY output transition time typ. 15 7 -40 to+85 max. min. 27 15 max. 34 19 -40 to+125 min. max. 41 22 ns ns 4.5 4.5 Fig.6 Fig.6 UNIT VCC (V) WAVEFORMS TEST CONDITIONS AC WAVEFORMS (1) HC: VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.6 Waveforms showing the input (nA, nB, nC, nD) to output (nY) propagation delays and the output transition times. PACKAGE OUTLINES See "74HC/HCT/HCU/HCMOS Logic Package Outlines". December 1990 6 http://www.icinfo.net http://pdf.ecgoo.net

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