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IDT49C460 Datasheet(PDF) 18 Page - Integrated Device Technology |
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IDT49C460 Datasheet(HTML) 18 Page - Integrated Device Technology |
18 / 32 page 11.6 18 IDT49C460/A/B/C/D/E 32-BIT CMOS ERROR DETECTION AND CORRECTION UNIT MILITARY AND COMMERCIAL TEMPERATURE RANGES NOTE: (15) above applies to correction path. 2584 tbl 71 IDT49C460E AC ELECTRICAL CHARACTERISTICS (Guaranteed Commercial Range Performance) Temperature range: 0 °C to +70°C, VCC = 5.0V ± 5% The inputs switch between 0V to 3V with signal measured at the 1.5V level. PROPAGATION DELAYS (1) SET-UP AND HOLD TIMES RELATIVE TO LATCH ENABLES NOTES: 2584 tbl 73 1. CI = 50pF. 2. These parameters are combinational propagation delay calculations, and are not tested in production. 3. Data In or Correct Data Out measurement requires timing as shown in the Switching Waveforms. 4. Set-up and Hold times relative to Latch Enables (Latching Data). 5. Output tests specified with CI = 5pF and measured to 0.5V change of output level. Testing is performed at CI = 50pF and correlated to CI = 5pF. 6. Not production tested, guaranteed by characterization. OUTPUT ENABLE/DISABLE TIMES (5) MINIMUM PULSE WIDTHS Min. LEIN, LEOUT/ GENERATE, LEDIAG ud ud (Positive–going pulse) 5 ns Enable Disable From Input Enable Disable To Output Min. Max. Min. Max. Unit OE Byte0–3 d d u u DATA0–31 070 6 ns OESC d d u u SC0–7 070 6 ns 2584 tbl 70 2584 tbl 72 To Output From Input SC 0–7 DATA 0–31 ERROR ERROR MULT ERROR MULT ERROR Unit DATA0–31(3) 11 14(2) 10 11 ns CB0–7 (CODE ID1,0 = 00, 11) 9 12 7 9 ns CB0–7 (CODE ID1,0 = 10) 9 10 — — ns LEOUT/ GENERATE u u —9 d d 7 d d 8ns d d 13 — u u 7 u u 8ns CORRECT Not Internal Control Mode —11 — — ns DIAG MODE Not Internal Control Mode 11 18 8 14 ns CODE ID1,0 13(6) 17 12 15 ns LEIN From latched to Transparent 16 19 13 16 ns LEDIAG From latched to Transparent u u 11(6) 17 11 13 ns Internal Control LEDIAG (Internal Control Mode) From latched to Transparent u u 11(6) 16 11 13 ns Mode DATA0–31 (Internal Control Mode) Via Diagnostic Latch u u 11 17(2) 911 ns From Input To Input (Latching Data) Set-up Time Min. Hold Time Min. Unit DATA0–31(4) d d LEIN 33 ns CB0–7 (4) d d LEIN 23 ns DATA0–31(4, 6) d d LEOUT/ GENERATE 5(15) 0ns CB0–7 (CODE ID 00, 11)(4, 6) d d LEOUT/ GENERATE 11 0 ns CB0–7 (CODE ID 10)(4, 6) d d LEOUT/ GENERATE 60 ns CORRECT(4, 6) u u d d LEOUT/ GENERATE 60 ns DIAG MODE(4, 6) d d LEOUT/ GENERATE 13 0 ns CODE ID1,0(4, 6) d d LEOUT/ GENERATE 80 ns LEIN(4, 6) u u d d LEOUT/ GENERATE 14 0 ns DATA0–31(4, 6) LEDIAG 33 ns |
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