[ /Title (CD74 HC688 , CD74 HCT68 8) /Subject (High Speed CMOS CD54HC688, CD74HC688, CD54HCT688, CD74HCT688 Data sheet acquired from Harris Semiconductor SCHS196C High-Speed CMOS Logic 8-Bit Magnitude Comparator September 1997 - Revised August 2003 Features Description • Cascadable The ’HC688 and ’HCT688 are 8-bit magnitude comparators designed for use in computer and logic applications that require the comparison of two 8-bit binary words. When the compared words are equal the output (Y) is low and can be used as the enabling input for the next device in a cascaded application. • Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads • Wide Operating Temperature Range . . . -55oC to 125oC Ordering Information • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTL Logic ICs TEMP. RANGE (oC) PACKAGE CD54HC688F3A -55 to 125 20 Ld CERDIP CD54HCT688F3A -55 to 125 20 Ld CERDIP CD74HC688E -55 to 125 20 Ld PDIP CD74HC688M -55 to 125 20 Ld SOIC CD74HC688M96 -55 to 125 20 Ld SOIC CD74HC688NSR -55 to 125 20 Ld SOP CD74HC688PWR -55 to 125 20 Ld TSSOP CD74HC688PWT -55 to 125 20 Ld TSSOP CD74HCT688E -55 to 125 20 Ld PDIP CD74HCT688M -55 to 125 20 Ld SOIC CD74HCT688M96 -55 to 125 20 Ld SOIC PART NUMBER • HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30%of VCC at VCC = 5V • HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH NOTE: When ordering, use the entire part number. The suffixes 96 and R denote tape and reel. The suffix T denotes a small-quantity reel of 250. Pinout CD54HC688, CD54HCT688 (CERDIP) CD74HC688 (PDIP, SOIC, SOP, TSSOP) CD74HCT688 (PDIP, SOIC) TOP VIEW E 1 A0 2 19 Y B0 3 18 B7 A1 4 17 A7 B1 5 16 B6 A2 6 15 A6 B2 7 14 B5 A3 8 13 A5 B3 9 12 B4 GND 10 11 A4 20 VCC CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © 2003, Texas Instruments Incorporated 1 CD54HC688, CD74HC688, CD54HCT688, CD74HCT688 Functional Diagram A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 2 4 6 8 11 13 15 17 Y 3 19 5 7 9 12 14 16 18 1 E TRUTH TABLE INPUTS OUPUTS A, B E Y A=B L L A≠B L H X H H H = High Voltage Level, L = Low Voltage Level, X = Don’t Care 2 CD54HC688, CD74HC688, CD54HCT688, CD74HCT688 Logic Diagram A0 B0 A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 E 1 10 GND 20 VCC 19 Y 3 CD54HC688, CD74HC688, CD54HCT688, CD74HCT688 Absolute Maximum Ratings Thermal Information DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V DC Input Diode Current, IIK For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA DC Output Diode Current, IOK For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA DC Output Source or Sink Current per Output Pin, IO For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA DC VCC or Ground Current, ICC or IGND . . . . . . . . . . . . . . . . . .±50mA Thermal Resistance (Typical, Note 1) θJA (oC/W) E (PDIP) Package . . . . . . . . . . . . . . . . . . . . . . . . . . 69 M (SOIC) Package. . . . . . . . . . . . . . . . . . . . . . . . . . 58 NSR (SOP) Package . . . . . . . . . . . . . . . . . . . . . . . . 60 PW (TSSOP) Package . . . . . . . . . . . . . . . . . . . . . . 83 Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only) Operating Conditions Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC Supply Voltage Range, VCC HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC Input Rise and Fall Time 2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max) 4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max) 6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max) CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 1. The package thermal impedance is calculated in accordance with JESD 51-7. DC Electrical Specifications TEST CONDITIONS PARAMETER 25oC -40oC TO 85oC -55oC TO 125oC SYMBOL VI (V) IO (mA) VCC (V) VIH - - 2 1.5 - - 1.5 4.5 3.15 - - 3.15 - 3.15 - V 6 4.2 - - 4.2 - 4.2 - V MIN TYP MAX MIN MAX MIN MAX UNITS - 1.5 - V HC TYPES High Level Input Voltage Low Level Input Voltage High Level Output Voltage CMOS Loads VIL VOH - VIH or VIL High Level Output Voltage TTL Loads Low Level Output Voltage CMOS Loads VOL VIH or VIL Low Level Output Voltage TTL Loads Input Leakage Current Quiescent Device Current - 2 - - 0.5 - 0.5 - 0.5 V 4.5 - - 1.35 - 1.35 - 1.35 V 6 - - 1.8 - 1.8 - 1.8 V -0.02 2 1.9 - - 1.9 - 1.9 - V -0.02 4.5 4.4 - - 4.4 - 4.4 - V -0.02 6 5.9 - - 5.9 - 5.9 - V - - - - - - - - - V -4 4.5 3.98 - - 3.84 - 3.7 - V -5.2 6 5.48 - - 5.34 - 5.2 - V 0.02 2 - - 0.1 - 0.1 - 0.1 V 0.02 4.5 - - 0.1 - 0.1 - 0.1 V 0.02 6 - - 0.1 - 0.1 - 0.1 V - - - - - - - - - V 4 4.5 - - 0.26 - 0.33 - 0.4 V 5.2 6 - - 0.26 - 0.33 - 0.4 V II VCC or GND - 6 - - ±0.1 - ±1 - ±1 µA ICC VCC or GND 0 6 - - 8 - 80 - 160 µA 4 CD54HC688, CD74HC688, CD54HCT688, CD74HCT688 DC Electrical Specifications (Continued) TEST CONDITIONS SYMBOL VI (V) IO (mA) High Level Input Voltage VIH - - Low Level Input Voltage VIL - High Level Output Voltage CMOS Loads VOH VIH or VIL PARAMETER 25oC VCC (V) -40oC TO 85oC -55oC TO 125oC MIN TYP MAX MIN MAX MIN MAX UNITS 4.5 to 5.5 2 - - 2 - 2 - V - 4.5 to 5.5 - - 0.8 - 0.8 - 0.8 V -0.02 4.5 4.4 - - 4.4 - 4.4 - V -4 4.5 3.98 - - 3.84 - 3.7 - V 0.02 4.5 - - 0.1 - 0.1 - 0.1 V 4 4.5 - - 0.26 - 0.33 - 0.4 V HCT TYPES High Level Output Voltage TTL Loads Low Level Output Voltage CMOS Loads VOL VIH or VIL Low Level Output Voltage TTL Loads Input Leakage Current Quiescent Device Current Additional Quiescent Device Current Per Input Pin: 1 Unit Load II VCC and GND 0 5.5 - - ±0.1 - ±1 - ±1 µA ICC VCC or GND 0 5.5 - - 8 - 80 - 160 µA ∆ICC (Note 2) VCC -2.1 - 4.5 to 5.5 - 100 360 - 450 - 490 µA NOTE: 2. For dual-supply systems theoretical worst case (VI = 2.4V, VCC = 5.5V) specification is 1.8mA. HCT Input Loading Table INPUT UNIT LOADS Enable 0.7 Data Inputs 0.35 NOTE: Unit Load is ∆ICC limit specified in DC Electrical Table, e.g., 360µA max at 25oC. Switching Specifications Input tr, tf = 6ns PARAMETER TEST SYMBOL CONDITIONS 25oC -40oC TO 85oC -55oC TO 125oC VCC (V) MIN TYP MAX MIN MAX MIN MAX UNITS 2 - - 170 - 210 - 255 ns 4.5 - - 34 - 42 - 51 ns CL =15pF 5 - 14 - - - - - ns CL = 50pF 6 - - 29 - 36 - 43 ns CL = 50pF 2 - - 170 - 210 - 255 ns 4.5 - - 34 - 42 - 51 ns CL =15pF 5 - 14 - - - - - ns CL = 50pF 6 - - 29 - 36 - 43 ns HC TYPES Propagation Delay (Figure 1) An to Output Bn to Output tPLH, tPHL tPLH, tPHL CL = 50pF 5 CD54HC688, CD74HC688, CD54HCT688, CD74HCT688 Switching Specifications Input tr, tf = 6ns (Continued) TEST SYMBOL CONDITIONS PARAMETER -40oC TO 85oC -55oC TO 125oC MIN TYP MAX MIN MAX MIN MAX UNITS 2 - - 120 - 150 - 180 ns 4.5 - - 24 - 30 - 36 ns CL =15pF 5 - 9 - - - - - ns CL = 50pF 6 - - 20 - 26 - 30 ns tTLH, tTHL CL = 50pF 2 - - 75 - 95 - 110 ns 4.5 - - 15 - 19 - 22 ns 6 - - 13 - 16 - 19 ns E to Output tPLH, tPHL Output Transition Time (Figure 1) 25oC VCC (V) CL = 50pF Input Capacitance CIN CL = 50pF - - - 10 - 10 - 10 pF Power Dissipation Capacitance (Notes 3, 4) CPD CL =15pF 5 - 22 - - - - - pF tPLH, tPHL CL = 50pF 4.5 - - 34 - 42 - 51 ns CL =15pF 5 - 14 - - - - - ns tPLH, tPHL CL = 50pF 4.5 - - 34 - 42 - 51 ns CL =15pF 5 - 14 - - - - - ns tPLH, tPHL CL = 50pF 4.5 - - 24 - 30 - 36 ns CL =15pF 5 - 9 - - - - - ns 4.5 - - 15 - 19 - 22 ns HCT TYPES Propagation Delay (Figure 1) An to Output Bn to Output E to Output Output Transition Time (Figure 1) tTLH, tTHL CL = 50pF Input Capacitance CIN CL = 50pF - - - 10 - 10 - 10 pF Power Dissipation Capacitance (Notes 3, 4) CPD CL =15pF 5 - 22 - - - - - pF NOTES: 3. CPD is used to determine the dynamic power consumption, per gate. 4. PD = VCC2 fi (CPD + CL) where fi = Input Frequency, CL = Output Load Capacitance, VCC = Supply Voltage. Test Circuit and Waveform tr = 6ns tf = 6ns ANY INPUT A OR B 90% INPUT LEVEL VS 10% GND tPHL tPLH OUTPUT Y VS tTLH tTHL FIGURE 1. PROPAGATION DELAY AMD TRANSITION TIMES 6 PACKAGE OPTION ADDENDUM www.ti.com 9-Oct-2007 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty 5962-8685701RA ACTIVE CDIP J 20 1 TBD A42 SNPB N / A for Pkg Type CD54HC688F3A ACTIVE CDIP J 20 1 TBD A42 SNPB N / A for Pkg Type Lead/Ball Finish MSL Peak Temp (3) CD54HCT688F ACTIVE CDIP J 20 1 TBD A42 SNPB N / A for Pkg Type CD54HCT688F3A ACTIVE CDIP J 20 1 TBD A42 SNPB N / A for Pkg Type CD74HC688E ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type CD74HC688EE4 ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type CD74HC688M ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688M96 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688M96E4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688M96G4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688ME4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688MG4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688NSR ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688NSRE4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688NSRG4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688PWR ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688PWRE4 ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688PWRG4 ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688PWT ACTIVE TSSOP PW 20 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688PWTE4 ACTIVE TSSOP PW 20 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HC688PWTG4 ACTIVE TSSOP PW 20 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HCT688E ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type CD74HCT688EE4 ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type CD74HCT688M ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HCT688M96 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HCT688M96E4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HCT688M96G4 ACTIVE SOIC DW 20 2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 9-Oct-2007 Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty CD74HCT688ME4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM CD74HCT688MG4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Lead/Ball Finish MSL Peak Temp (3) no Sb/Br) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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Addendum-Page 2 MECHANICAL DATA MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999 PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0,30 0,19 0,65 14 0,10 M 8 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 7 0°– 8° A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 8 14 16 20 24 28 A MAX 3,10 5,10 5,10 6,60 7,90 9,80 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-153 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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