Datenblatt-Suchmaschine für elektronische Bauteile |
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SN74ALS527 Datenblatt(PDF) 6 Page - Texas Instruments |
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SN74ALS527 Datenblatt(HTML) 6 Page - Texas Instruments |
6 / 7 page SN54ALS526, SN54ALS527, SN54ALS528 SN74ALS526, SN74ALS527, SN74ALS528 FUSEPROGRAMMABLE IDENTITY COMPARATORS SDAS051A − JUNE 1984−REVISED MAY 1986 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 6 programing parameters PARAMETER MIN MAX UNIT VIH High-level input voltage 2 5.5 V VIL Low-level input voltage 0.8 V VIHH Program-pulse input voltage 11.5 12.5 V VCC Supply voltage 6.5 7.5 V IIHH Program-pulse input current Pin (G low) 10 mA IIHH Program-pulse input current G 1.24 mA ’ALS526 31 ICCHH Supply current with VIHH applied ’ALS527 29 mA ’ALS528 26 tW Pulse duration, program 10 50 µs tr Rise time, program voltage 10 µs Test Test Test Blow Fuse Verify Verify Verify VIH VIL VIHH VIH VIL VIHH VIL VIH VIL 90% 10% 90% tw tr P Inputs Pn G P=Q Don’t Care Illustrated above is the following sequence: NOTES: A. It is desired to program a particular input to recognize a high level input. With G low and all P inputs† at VIL, the output is low if no fuses are blown. B. With G low and all P inputs† at VIH, the output is high unless all fuses are blown. C. When the desired input is taken to VIHH, the output goes low if the fuse is intact. D. G is pulsed to VIHH blowing the desired fuse. E. After G is low, output will be high indicating that the fuse is blown. F. The programmed input returns to VIH, the output is high unless all fuses have been blown. G. All P inputs† are taken to VIL, the output is high if a fuse has been blown. † For the ’ALS527, P8 through P11 inputs must match the Q8 through Q11 inputs. Figure 1. Programming Waveforms |
Ähnliche Teilenummer - SN74ALS527 |
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Ähnliche Beschreibung - SN74ALS527 |
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