SN74LS688DWR

SN74LS688DWR

$1.97
  • Description:IC COMPARATOR IDENTITY 8B 20SOIC
  • Series:74LS
  • Mfr:Texas Instruments
  • Package:Tape & Reel (TR),Cut Tape (CT)

SKU:490362acd721 Category: Brand:

  
  • Quantity
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Product Detailed Parameters

  • Description:IC COMPARATOR IDENTITY 8B 20SOIC
  • 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 (0.295", 7.50mm Width)
  • Supplier Device Package:20-SOIC
  • Mounting Type:Surface Mount
  • Grade:-
  • Qualification:-

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SN74LS688DWR

Buying Guide
Summary

Texas Instruments SN74LS688DWR is used in Comparators category where integration and verification need to stay predictable. Key specs include Description (IC COMPARATOR IDENTITY 8B 20SOIC), Series (74LS), Type (Identity Comparator), Packaging (Tape & Reel (TR), Cut Tape (CT)), and Supply (4.85V ~ 5.25V).

Selection Notes
  • For SN74LS688DWR, 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.
  • Check Output Function (A=B) against the datasheet conditions and your system-level constraints.
  • Ensure the package/case (20-SOIC (0.295", 7.50mm Width)) and land pattern match your PCB layout before procurement.
Alternates & Substitutions
  • In Comparators designs, define acceptance criteria up front so alternates can be qualified and repeated in production.
  • Keep the assembly and footprint constraints consistent (package/case 20-SOIC (0.295", 7.50mm Width), supplier package 20-SOIC, mounting Surface Mount) to avoid a late PCB change.
  • Confirm the real operating corners (supply 4.85V ~ 5.25V, temperature 0°C ~ 70°C) and avoid swaps that only work at typical conditions.
  • For production substitutions, confirm traceability and documentation expectations so the alternate can be released cleanly.
FAQ

Who is the manufacturer of SN74LS688DWR?
Texas Instruments

What should I compare when selecting an alternate for SN74LS688DWR?
Compare footprint/pinout, key electrical limits, temperature range, and interface requirements, then validate under worst-case conditions.

What is the supply voltage range of SN74LS688DWR?
4.85V ~ 5.25V

What package type does SN74LS688DWR come in?
20-SOIC (0.295", 7.50mm Width)

Application Scenarios

Texas Instruments SN74LS688DWR shows up under Comparators when designers want a well-bounded, datasheet-driven building block instead of a fragile board-level workaround. In practice, designers typically focus on grounding and reference strategy because they often decide whether performance is repeatable across builds. Signal-chain validation includes interface timing and loading checks so analog performance holds once the design is assembled. Layout and hysteresis strategy often determine noise immunity and false-trigger rate in the real environment. Across automotive sensing, mixed-signal paths survive transients and vibration while maintaining stable measurement margins. In real deployments, across battery systems, window comparators support undervoltage/overvoltage monitoring where accuracy and stable thresholds matter across temperature. Across power supplies and motor drives, comparators implement fast protection thresholds (OCP/OVP) where propagation delay and hysteresis control nuisance trips. Across sensor interfaces, comparators provide clean thresholding for proximity and speed signals in noisy cabinets where EMI and long cables can inject spurious edges.

Compatibility Advice
  • For Texas Instruments SN74LS688DWR 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
  • Not ideal when integrating Texas Instruments SN74LS688DWR for Comparators, the input environment is poorly controlled and protection/filtering are not planned, because integration risk stays high when key margins cannot be measured.
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