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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/HCT93 4-bit binary ripple counter Product specification File under Integrated Circuits, IC06 December 1990 Philips Semiconductors Product specification 4-bit binary ripple counter FEATURES * Various counting modes * Asynchronous master reset * Output capability: standard * ICC category: MSI GENERAL DESCRIPTION The 74HC/HCT93 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/HCT93 are 4-bit binary ripple counters. The devices consist of four master-slave flip-flops internally connected to provide a QUICK REFERENCE DATA GND = 0 V; Tamb = 25 C; tr = tf = 6 ns divide-by-two section and a divide-by-eight section. Each section has a separate clock input (CP0 and CP1) to initiate state changes of the counter on the HIGH-to-LOW clock transition. State changes of the Qn outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and should not be used for clocks or strobes. A gated AND asynchronous master reset (MR1 and MR2) is provided which overrides both clocks and resets (clears) all flip-flops. Since the output from the divide-by-two section is not internally connected to the succeeding stages, 74HC/HCT93 the device may be operated in various counting modes. In a 4-bit ripple counter the output Q0 must be connected externally to input CP1. The input count pulses are applied to clock input CP0. Simultaneous frequency divisions of 2, 4, 8 and 16 are performed at the Q0, Q1, Q2 and Q3 outputs as shown in the function table. As a 3-bit ripple counter the input count pulses are applied to input CP1. Simultaneous frequency divisions of 2, 4 and 8 are available at the Q1, Q2 and Q3 outputs. Independent use of the first flip-flop is available if the reset function coincides with reset of the 3-bit ripple-through counter. TYPICAL SYMBOL tPHL/ tPLH 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 CP0 to Q0 maximum clock frequency input capacitance power dissipation capacitance per package notes 1 and 2 CONDITIONS HC CL = 15 pF; VCC = 5 V 12 100 3.5 22 HCT 15 77 3.5 22 ns MHz pF pF UNIT December 1990 2 Philips Semiconductors Product specification 4-bit binary ripple counter PIN DESCRIPTION PIN NO. 1 2, 3 4, 6, 7, 13 5 10 12, 9, 8, 11 14 SYMBOL CP1 MR1, MR2 n.c. VCC GND Q0 to Q3 CP0 NAME AND FUNCTION 74HC/HCT93 clock input 2nd, 3rd and 4th section (HIGH-to-LOW, edge-triggered) asynchronous master reset (active HIGH) not connected positive supply voltage ground (0 V) flip-flop outputs clock input 1st section (HIGH-to-LOW, edge-triggered) Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol. December 1990 3 Philips Semiconductors Product specification 4-bit binary ripple counter 74HC/HCT93 FUNCTION TABLE OUTPUTS COUNT Q0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Notes 1. Output Q0 connected to CP1. H = HIGH voltage level L = LOW voltage level MODE SELECTION RESET INPUTS MR1 H L H L MR2 H H L L Q0 L OUTPUTS Q1 L count count count Q2 L Q3 L L H L H L H L H L H L H L H L H Q1 L L H H L L H H L L H H L L H H Q2 L L L L H H H H L L L L H H H H Q3 L L L L L L L L H H H H H H H H Fig.4 Functional diagram. Fig.5 Logic diagram. December 1990 4 Philips Semiconductors Product specification 4-bit binary ripple 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 +25 min. typ. tPHL/ tPLH propagation delay CP0 to Q0 propagation delay CP1 to Q1 propagation delay CP1 to Q2 propagation delay CP1 to Q3 propagation delay MRn to Qn output transition time 41 15 12 49 16 13 61 22 18 80 29 23 50 18 14 19 7 6 50 10 9 80 16 14 8 3 2 14 5 4 14 5 4 30 91 108 max. 125 25 21 135 27 23 185 37 31 245 49 42 155 31 26 75 15 13 65 13 11 100 20 17 100 20 17 4.8 24 28 -40 to +85 min. max. 155 31 26 170 34 29 230 46 39 305 61 52 195 39 33 95 19 16 75 15 13 120 24 20 120 24 20 4.0 20 24 -40 to +125 min. max. 190 38 32 205 41 35 280 56 48 370 71 63 235 47 40 110 22 19 ns 74HC/HCT93 TEST CONDITIONS UNIT V CC WAVEFORMS (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 2.0 4.5 6.0 Fig.6 tPHL/ tPLH ns Fig.6 tPHL/ tPLH ns Fig.6 tPHL/ tPLH ns Fig.6 tPHL ns Fig.7 tTHL/ tTLH ns Fig.6 trem removal time MRn to CP0, CP1 pulse width CP0, CP1 ns Fig.7 tW ns Fig.6 tW master reset pulse width 80 MRn 16 14 maximum clock pulse frequency CP0, CP1 6.0 30 35 ns Fig.7 fmax MHz Fig.6 December 1990 5 Philips Semiconductors Product specification 4-bit binary ripple 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/HCT93 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 CP0, CP1 MRn UNIT LOAD COEFFICIENT 0.60 0.40 AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr = tf = 6 ns; CL = 50 pF Tamb (C) 74HCT SYMBOL PARAMETER min. tPHL/ tPLH tPHL/ tPLH tPHL/ tPLH tPHL/ tPLH tPHL tTHL/ tTLH trem tW tW fmax propagation delay CP0 to Q0 propagation delay CP1 to Q1 propagation delay CP1 to Q2 propagation delay CP1 to Q3 propagation delay MRn to Qn output transition time removal time MRn to CP0, CP1 pulse width CP0, CP1 10 16 +25 typ. 18 18 24 30 17 7 3 7 5 70 -40 to +85 max. min. 34 34 46 58 33 15 13 20 20 24 max. 43 43 58 73 41 19 15 24 24 20 -40 to +125 min. max. 51 51 69 87 50 22 ns ns ns ns ns ns ns ns ns MHz 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 Fig.6 Fig.6 Fig.6 Fig.6 Fig.7 Fig.6 Fig.7 Fig.6 Fig.7 Fig.6 UNIT V CC WAVEFORMS (V) TEST CONDITIONS master reset pulse width 16 MRn maximum clock pulse frequency CP0, CP1 30 December 1990 6 Philips Semiconductors Product specification 4-bit binary ripple counter AC WAVEFORMS 74HC/HCT93 (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.6 Waveforms showing the clock (CPn) to output (Qn) propagation delays, the clock pulse width, output transition times and the maximum clock pulse frequency. (1) HC : VM = 50%; VI = GND to VCC. HCT: VM = 1.3 V; VI = GND to 3 V. Fig.7 Waveforms showing the master reset (MRn) pulse width, the master reset to output (Qn) propagation delays and the master reset to clock (CPn) removal time. PACKAGE OUTLINES See "74HC/HCT/HCU/HCMOS Logic Package Outlines". December 1990 7 |
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