Features
- A and C speeds
- Low input and output leakage ≤1µA (max.)
- CMOS power levels
- True TTL input and output compatibility
- VOH = 3.3V (typ.)
- VOL = 0.3V (typ.)
- High drive outputs (-15mA IOH, 48mA IOL)
- Meets or exceeds JEDEC standard 18 specifications
- Power off disable outputs permit "live insertion"
- Available in 20-pin SOIC and QSOP packages
74FCT521T - Block Diagram
Description
The IDT74FCT521T is an 8-bit identity comparator that compares two words of up to eight bits each and provides a low output when the two words match bit for bit. The expansion input IA = B also serves as an active low enable input. The 74FCT521T operates at -40 °C to +85 °C.
Parameters
| Attributes | Value |
|---|---|
| Function | Comparator |
| Pkg. Code | PCG20, PSG20 |
| Temp. Range (°C) | -40 to 85°C |
| Bus Width (bits) | 8 |
| Core Voltage (V) | 5 |
| Speed Grade | A, C |
| Part Number | Status | Samples | Stock | Package | Budgetary Price (USD) | Lead Count (#) | Temp. Grade | Pb (Lead) Free | Carrier Type | Moisture Sensitivity Level (MSL) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74FCT521ATQG | Active | Available | In Stock | QSOP | 1ku | $1.23 | 20# | C | Yes | Tube | 1 | TAIWAN | TAIWAN, USA |
| 74FCT521ATQG8 | Active | N/A | In Stock | QSOP | 1ku | $1.23 | 20# | C | Yes | Reel | 1 | TAIWAN | TAIWAN, USA |
| 74FCT521ATSOG | Active | Available | In Stock | SOIC | 1ku | $1.23 | 20# | C | Yes | Tube | 1 | TAIWAN | TAIWAN, USA |
| 74FCT521ATSOG8 | Active | N/A | In Stock | SOIC | 1ku | $1.23 | 20# | C | Yes | Reel | 1 | TAIWAN | TAIWAN, USA |
| 74FCT521CTQG | Active | Available | Out of Stock | QSOP | 1ku | $1.23 | 20# | C | Yes | Tube | 1 | TAIWAN | TAIWAN, USA |
| 74FCT521CTSOG8 | Active | N/A | In Stock | SOIC | 1ku | $1.23 | 20# | C | Yes | Reel | 1 | TAIWAN | TAIWAN, USA |
| 74FCT521CTQG8 | Obsolete | N/A | Out of Stock | QSOP | 20# | C | Yes | Reel | 1 | |||
| 74FCT521CTSOG | Obsolete | N/A | In Stock | SOIC | 20# | C | Yes | Tube | 1 |
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- Product Change NoticePDF 24 KB 7WDXRDKU4E7E-5-41812 Nov 14, 2012
- Product Change NoticePDF 55 KB 7WDXRDKU4E7E-5-41544 Oct 13, 2008
- Product Change NoticePDF 18 KB 7WDXRDKU4E7E-5-41809 Sep 02, 2005
- Product Change NoticePDF 38 KB 7WDXRDKU4E7E-5-41815 Aug 04, 2005
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- Product Change NoticePDF 47 KB 7WDXRDKU4E7E-5-41814 Apr 29, 2005
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- Product Change NoticePDF 42 KB 7WDXRDKU4E7E-5-41808 Jan 25, 2005
- Product Change NoticePDF 80 KB 7WDXRDKU4E7E-5-41813 Dec 14, 2004
- Product Change NoticePDF 44 KB 7WDXRDKU4E7E-5-41710 Oct 15, 2004
- Product Change NoticePDF 196 KB 7WDXRDKU4E7E-5-41797 Jan 19, 2004
- Product Change NoticePDF 116 KB 7WDXRDKU4E7E-5-41796 Dec 03, 2003
- Product Change NoticePDF 109 KB 7WDXRDKU4E7E-5-41795 Dec 03, 2003
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- Application NotePDF 130 KB 7WDXRDKU4E7E-5-37062 Jun 02, 1996
- Application NotePDF 143 KB 7WDXRDKU4E7E-5-37080 Jun 02, 1996
- Application NotePDF 80 KB 7WDXRDKU4E7E-5-32306 Jun 02, 1996
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- Product Change NoticePDF 39 KB 7WDXRDKU4E7E-5-63188 Aug 29, 2018
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- Product Change NoticePDF 611 KB 7WDXRDKU4E7E-5-59927 Feb 15, 2016
- Product Change NoticePDF 24 KB 7WDXRDKU4E7E-5-41812 Nov 14, 2012View More (30)
Product Notices (PCN, EOL, etc) (30)
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