Details, datasheet, quote on part number: SN74HC688N
CategorySemiconductors => Logic => Specialty Logic => Digital Comparator
Part familySN74HC688 8-Bit Identity/Magnitude Comparators (P=Q) with Enable
TitleIdentity Comparators
Description8-Bit Identity/Magnitude Comparators (P=Q) with Enable 20-PDIP -40 to 85
CompanyTexas Instruments, Inc.
DatasheetDownload SN74HC688N datasheet
Cross ref.Similar parts: CD74HC688E, CD74HC688EX, MC74HC688N, HD74HC688P, HD74HC688P-E, MM74HC688N, MM74HC688N_NL, M74HC688B1N, M74HC688B1R, M74HC688F1
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Output Drive (IOL/IOH)(Max)(mA)5.2/-5.2
ICC @ Nom Voltage(Max)(mA)0.08
F @ Nom Voltage(Max)(Mhz)70
Operating Temperature Range(C)-40 to 85
Technology FamilyHC
tpd @ Nom Voltage(Max)(ns)45
Approx. Price (US$)0.32 | 1ku
  Mecanical Data
Pin nbPackage typeInd stdJEDEC codePackage qtyCarrierDevice markWidth (mm)Length (mm)Thick (mm)Pitch (mm)
20NPDIPR-PDIP-T20TUBESN74HC688N 6.3524.334.572.54


Features, Applications

Wide Operating Voltage Range 6 V High-Current Outputs Drive To 10 LSTTL Loads Low Power Consumption, 80-A Max ICC

Typical tpd ns 4-mA Output Drive 5 V Low Input Current 1 A Max Compare Two 8-Bit Words

These identity comparators perform comparisons of two 8-bit binary or BCD words. An output-enable (OE) input may be used to force the output to the high level. ORDERING INFORMATION

TA PDIP to 85C SOIC DW TSSOP PW CDIP to 125C CFP W LCCC FK PACKAGE Tube of 20 Tube of 25 Reel of 2000 Tube of 2000 Reel of 250 Tube of 20 Tube of 85 Tube of 55 ORDERABLE PART NUMBER SNJ54HC688W SNJ54HC688FK TOP-SIDE MARKING SNJ54HC688W SNJ54HC688FK

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at FUNCTION TABLE INPUTS DATA P, Q P=Q P>Q P<Q X OE OUTPUT P=Q

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage range, VCC. 7 V Input clamp current, IIK (VI VI > VCC) (see Note 20 mA Output clamp current, IOK (VO VO > VCC) (see Note 20 mA Continuous output current, IO (VO 0 to VCC). 25 mA Continuous current through VCC or GND. 50 mA Package thermal impedance, JA (see Note 2): DW package. 58C/W N package. 69C/W PW package. 83C/W Storage temperature range, Tstg. to 150C

Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7.

SN54HC688 MIN VCC VIH Supply voltage High-level input voltage VCC 2 V VCC 4.5 V VCC 6 V VCC 2 V VIL VO tt Low-level input voltage Input voltage Output voltage Input transition (rise and fall) time VCC 2 V VCC 4.5 V VCC 4.5 V VCC 6 V VCC NOM 5 MAX 6 SN74HC688 MIN VCC 500 ns NOM 5 MAX 6 UNIT V

VCC 400 TA Operating free-air temperature C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)


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