SN74LS688NSR

SN74LS688NSR

$2.41
  • Description:IC COMPARATOR IDENTITY 8BIT 20SO
  • Series:74LS
  • Mfr:Texas Instruments
  • Package:Tape & Reel (TR),Cut Tape (CT)

SKU:ea51b2c74e14 Category: Brand:

  
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Product Detailed Parameters

  • Description:IC COMPARATOR IDENTITY 8BIT 20SO
  • Series:74LS
  • Mfr:Texas Instruments
  • Package:Tape & Reel (TR),Cut Tape (CT)
  • Type:Identity Comparator
  • Number of Bits:8
  • Output:Active Low
  • Output Function:A=B
  • Voltage - Supply:4.85V ~ 5.25V
  • Current - Output High, Low:400µA, 24mA
  • Max Propagation Delay @ V, Max CL:23ns @ 5V, 45pF
  • Current - Quiescent (Iq):-
  • Operating Temperature:0°C ~ 70°C
  • Package / Case:20-SOIC (0.209", 5.30mm Width)
  • Supplier Device Package:20-SO
  • Mounting Type:Surface Mount
  • Grade:-
  • Qualification:-

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SN74LS688NSR

Buying Guide
Summary

Texas Instruments SN74LS688NSR is used in Comparators category where integration and verification need to stay predictable. Key specs include Description (IC COMPARATOR IDENTITY 8BIT 20SO), Series (74LS), Type (Identity Comparator), Packaging (Tape & Reel (TR), Cut Tape (CT)), and Supply (4.85V ~ 5.25V).

Selection Notes
  • For SN74LS688NSR, ensure the package/case (20-SOIC (0.209", 5.30mm Width)) and land pattern match your PCB layout before procurement.
  • Check the supply current (400µA, 24mA) in your power budget and thermal plan.
  • Match the output type (Active Low) when selecting alternates or second sources.
  • Validate the operating temperature range (0°C ~ 70°C) for your environment and margin.
Alternates & Substitutions
  • In Comparators, confirm that alternates preserve startup states and fault behavior so system behavior does not change quietly.
  • Begin with the constraints that are hardest to change later: package/case 20-SOIC (0.209", 5.30mm Width), supplier package 20-SO, mounting Surface Mount.
  • Then confirm the operating envelope (supply 4.85V ~ 5.25V, temperature 0°C ~ 70°C) with margin for transients and derating.
  • Confirm compliance/qualification needs (for example RoHS/REACH or grade) before approving a second source for production.
FAQ

Who is the manufacturer of SN74LS688NSR?
Texas Instruments

What should I verify before using SN74LS688NSR in production?
Confirm footprint/pinout, min/max ratings, operating temperature, and the datasheet test conditions behind key specifications.

Which Supplier Device Package is specified for SN74LS688NSR?
20-SO

Which Output is listed for SN74LS688NSR?
Active Low

Application Scenarios

Selecting Texas Instruments SN74LS688NSR for Comparators usually comes down to meeting the system constraints that matter most: limits, interfaces, and testability in the real build. In practice, layout and hysteresis strategy often determine noise immunity and false-trigger rate in the real environment. Across practice, the whole chain sets performance: references, filtering, layout, and the real source/load impedance in the system. Real performance is determined by the full chain, including reference quality, filtering, layout coupling, and source/load impedance. Across energy metering, accuracy is maintained across noisy mains and wide temperature swings. In sensor interfaces, comparators provide clean thresholding for proximity and speed signals in noisy cabinets where EMI and long cables can inject spurious edges. In timing and clock conditioning, comparators translate sine-like signals into logic edges where input common-mode range and noise margin determine jitter performance.

Compatibility Advice
  • For Texas Instruments SN74LS688NSR in Comparators, verify ratings, interface levels, thermal headroom, and a repeatable test plan in the real system. This keeps qualification evidence reproducible later.
Project Fit
  • Best fit for Comparators when you can validate the key assumptions on the assembled system and keep acceptance criteria measurable.
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