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| 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/HCT4520 Dual 4-bit synchronous binary counter Product specification File under Integrated Circuits, IC06 December 1990 Philips Semiconductors Product specification Dual 4-bit synchronous binary counter FEATURES * Output capability: standard * ICC category: MSI GENERAL DESCRIPTION The 74HC/HCT4520 are high-speed Si-gate CMOS devices and are pin compatible with the "4520" of the "4000B" series. They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT4520 are dual 4-bit internally synchronous binary counters with an active HIGH clock input (nCP0) and an active LOW clock input (nCP1), buffered outputs 74HC/HCT4520 from all four bit positions (nQ0 to nQ3) and an active HIGH overriding asynchronous master reset input (nMR). The counter advances on either the LOW-to-HIGH transition of nCP0 if nCP1 is HIGH or the HIGH-to-LOW transition of nCP1 if nCP0 is LOW. Either nCP0 or nCP1 may be used as the clock input to the counter and the other clock input may be used as a clock enable input. A HIGH on nMR resets the counter (nQ0 to nQ3 = LOW) independent of nCP0 and nCP1. APPLICATIONS * Multistage synchronous counting * Multistage asynchronous counting * Frequency dividers QUICK REFERENCE DATA GND = 0 V; Tamb = 25 C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH tPHL fmax CI CPD Notes 1. CPD is used to determine the dynamic power dissipation (PD in W): PD = CPD x VCC2 x fi + (CL x VCC2 x fo) where: fi = input frequency in MHz fo = output frequency in MHz (CL x VCC2 x 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". PARAMETER propagation delay nCP0, nCP1 to nQn propagation delay nMR to nQn maximum clock frequency input capacitance power dissipation capacitance per counter notes 1 and 2 CONDITIONS HC CL = 15 pF; VCC = 5 V 24 13 68 3.5 29 HCT 24 13 64 3.5 24 ns ns MHz pF pF UNIT December 1990 2 Philips Semiconductors Product specification Dual 4-bit synchronous binary counter PIN DESCRIPTION PIN NO. 1, 9 2, 10 3, 4, 5, 6 7, 15 8 11, 12, 13, 14 16 SYMBOL 1CP0, 2CP0 1CP1, 2CP1 1Q0 to 1Q3 1MR, 2MR GND 2Q0 to 2Q3 VCC NAME AND FUNCTION clock inputs (LOW-to-HIGH, edge-triggered) clock inputs (HIGH-to-LOW, edge-triggered) data outputs asynchronous master reset inputs (active HIGH) ground (0 V) data outputs positive supply voltage 74HC/HCT4520 Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol. December 1990 3 Philips Semiconductors Product specification Dual 4-bit synchronous binary counter FUNCTION TABLE nCP0 L X H X Notes nCP1 H X L X MR L L L L L L H 74HC/HCT4520 MODE counter advances counter advances no change no change no change no change Q0 to Q3 = LOW Fig.4 Functional diagram. 1. H = HIGH voltage level L = LOW voltage level X = don't care = LOW-to-HIGH clock transition = HIGH-to-LOW clock transition Fig.5 Logic diagram (one counter). Fig.6 Timing diagram. December 1990 4 Philips Semiconductors Product specification Dual 4-bit synchronous binary counter DC CHARACTERISTICS FOR 74HC For the DC characteristics see "74HC/HCT/HCU/HCMOS Logic Family Specifications". Output capability: standard ICC category: MSI AC CHARACTERISTICS FOR 74HC GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (C) 74HC SYMBOL PARAMETER min. tPHL/ tPLH propagation delay nCP0 to nQn propagation delay nCP1 to nQn propagation delay nMR to nQn output transition time +25 typ. 77 28 22 77 28 22 44 16 13 19 7 6 80 16 14 22 8 6 39 14 11 -28 -10 -8 14 5 4 19 58 69 -40 to +85 max. min. max. 240 48 41 240 48 41 150 30 26 75 15 13 100 20 17 150 30 26 0 0 0 100 20 17 4.8 24 28 300 60 51 300 60 51 190 38 33 95 19 16 120 24 20 180 36 31 0 0 0 120 24 20 4.0 20 24 -40 to +125 min. max. 360 72 61 360 72 61 225 45 38 110 22 19 ns 74HC/HCT4520 TEST CONDITIONS UNIT VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 WAVEFORMS Fig.8 tPHL/ tPLH ns Fig.8 tPHL ns Fig.9 tTHL/ tTLH ns Fig.8 tW clock pulse width HIGH or LOW ns Fig.7 tW master reset pulse width 120 HIGH 24 20 removal time nMR to nCP0; nCP1 set-up time nCP1 to nCP0; nCP0 to nCP1 maximum clock pulse frequency 0 0 0 80 16 14 6.0 30 35 ns Fig.7 trem ns Fig.7 tsu ns Fig.8 fmax MHz Fig.7 December 1990 5 Philips Semiconductors Product specification Dual 4-bit synchronous binary counter DC CHARACTERISTICS FOR 74HCT For the DC characteristics see "74HC/HCT/HCU/HCMOS Logic Family Specifications". Output capability: standard ICC category: MSI Note to HCT types 74HC/HCT4520 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 nCP0, nCP1 nMR UNIT LOAD COEFFICIENT 0.80 1.50 AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (C) 74HCT SYMBOL PARAMETER +25 min. typ. tPHL/ tPLH tPHL/ tPLH tPHL tTHL/ tTLH tW tW trem tsu propagation delay nCP0 to nQn propagation delay nCP1 to nQn propagation delay nMR to nQn output transition time clock pulse width HIGH or LOW master reset pulse width HIGH removal time nMR to nCP0; nCP1 set-up time nCP1 to nCP0; nCP0 to nCP1 maximum clock pulse frequency 20 20 0 16 28 25 16 7 10 12 -8 6 -40 to +85 max. min. max. 53 53 35 15 25 25 0 20 66 66 44 19 30 30 0 24 -40 to +125 min. max. 80 80 53 22 ns ns ns ns ns ns ns ns 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 Fig.8 Fig.8 Fig.9 Fig.8 Fig.7 Fig.7 Fig.7 Fig.8 UNIT V CC (V) WAVEFORMS TEST CONDITIONS fmax 30 58 24 20 MHz 4.5 Fig.7 December 1990 6 Philips Semiconductors Product specification Dual 4-bit synchronous binary counter AC WAVEFORMS 74HC/HCT4520 Conditions: nCP1 = HIGH while nCP0 is triggered on a LOW-to-HIGH transition; tW and trem also apply when nCP0 = LOW and nCP1 is triggered on a HIGH-to-LOW transition. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.7 Waveforms showing removal time for nMR; minimum nCP0, nCP1, nMR pulse widths and maximum clock pulse frequency. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.8 Waveforms showing set-up times for nCP0 to nCP1 and nCP1 to nCP0, propagation delays and output transition times. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.9 Waveforms showing propagation delay from nMR to nQn output. PACKAGE OUTLINES See "74HC/HCT/HCU/HCMOS Logic Package Outlines". December 1990 7 |
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