74FCT521APC

74FCT521APC

$0.88
  • Description:IC COMPARATOR IDENTITY 8B 20DIP
  • Series:74FCT
  • Mfr:National Semiconductor
  • Package:Bulk

SKU:426d6d92b48b Category: Brand:

  
  • Quantity
    • -
    • +
  •    
ChipApex WhatsApp

Consult the customer manager about the wholesale price.

consultation hotline:86-132-6715-2157

email:chipapexlimited@gmail.com
Contact the product manager for consultation. One-stop consultation is available.


Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

*
*
*
*
Submitting!
Submission successful!
Submission failed!
Email error!
Phone number error!

Product Detailed Parameters

  • Description:IC COMPARATOR IDENTITY 8B 20DIP
  • Series:74FCT
  • Mfr:National Semiconductor
  • Package:Bulk
  • Type:Identity Comparator
  • Number of Bits:8
  • Output:Active Low
  • Output Function:A=B
  • Voltage - Supply:4.75V ~ 5.25V
  • Current - Output High, Low:15mA, 48mA
  • Max Propagation Delay @ V, Max CL:7.2ns @ 5V, 50pF
  • Current - Quiescent (Iq):1.5 mA
  • Operating Temperature:0°C ~ 70°C
  • Package / Case:20-DIP (0.300", 7.62mm)
  • Supplier Device Package:20-PDIP
  • Mounting Type:Through Hole
  • Grade:-
  • Qualification:-

Download product information

74FCT521APC

Buying Guide
Summary

National Semiconductor 74FCT521APC is sourced in Comparators category when teams want clear constraints and a repeatable validation path. Key specs include Description (IC COMPARATOR IDENTITY 8B 20DIP), Series (74FCT), Type (Identity Comparator), Packaging (Bulk), and Supply (4.75V ~ 5.25V).

Selection Notes
  • For 74FCT521APC, double-check the mounting type (Through Hole) for your intended installation method.
  • Confirm the supply current (15mA, 48mA) is acceptable for standby and active operation.
  • Verify the output type (Active Low) and any logic-level requirements in your design.
  • Verify the operating temperature range (0°C ~ 70°C) and derate as needed in your application.
Alternates & Substitutions
  • In Comparators, confirm that alternates preserve startup states and fault behavior so system behavior does not change quietly.
  • Start with mechanical equivalence and keep package/case 20-DIP (0.300", 7.62mm), supplier package 20-PDIP, mounting Through Hole aligned so the alternate is footprint-safe.
  • Confirm compliance/qualification needs (for example RoHS/REACH or grade) before approving a second source for production.
  • Compare not just numbers but also the conditions: rails, loads, timing, and temperature points behind the spec table.
FAQ

What details help you quote 74FCT521APC quickly?
Share the part number (74FCT521APC), quantity, target delivery date, and any packaging or documentation requirements.

Which operating temperature range is specified for 74FCT521APC?
0°C ~ 70°C

What Max Propagation Delay @ V, Max CL is listed for 74FCT521APC?
7.2ns @ 5V, 50pF

Which Number of Bits is listed for 74FCT521APC?
8

Application Scenarios

For many Comparators designs, National Semiconductor 74FCT521APC is vetted against electrical margins, thermal headroom, and mechanical integration before the BOM is frozen. Good analog integration simplifies validation by reducing sensitive external networks that would otherwise vary across builds. They condition, convert, or interface signals so systems can capture or generate analog information with defined accuracy, latency, and noise behavior. Comparator selection centers on propagation delay, overdrive dispersion, input common-mode range, and output stage compatibility (LVTTL, open-drain, etc.). After the schematic looks right, the proof is in measured behavior across corners, not just typical conditions. In practice, within energy metering, accuracy is maintained across noisy mains and wide temperature swings. Across timing and clock conditioning, comparators translate sine-like signals into logic edges where input common-mode range and noise margin determine jitter performance. Within integration work, eliminating uncertainty early is often the fastest route to a stable release.

Compatibility Advice
  • Confirm power supply isolation so conducted noise does not translate into emissions or desense in real deployments before freezing the BOM.
Project Fit
  • Best fit for Comparators when you can validate the key assumptions on the assembled system and keep acceptance criteria measurable.
74FCT521APC74FCT521APC
$0.88
Buy Now