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IDT49C460AFFB Datasheet(PDF) 20 Page - Integrated Device Technology |
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IDT49C460AFFB Datasheet(HTML) 20 Page - Integrated Device Technology |
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20 / 32 page  11.6 20 IDT49C460/A/B/C/D/E 32-BIT CMOS ERROR DETECTION AND CORRECTION UNIT MILITARY AND COMMERCIAL TEMPERATURE RANGES OUTPUT ENABLE/DISABLE TIMES (5) IDT49C460D AC ELECTRICAL CHARACTERISTICS (Guaranteed Military Range Performance) Temperature range: –55 °C to +125°C, VCC = 5.0V ± 10% The inputs switch between 0V to 3V with signal measured at the 1.5V level. PROPAGATION DELAYS (1) 2584 tbl 32 SET-UP AND HOLD TIMES RELATIVE TO LATCH ENABLES NOTES: 2584 tbl 35 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 = 5F. 6. Not production tested, guaranteed by characterization. NOTE: (15) above applies to correction path. 2584 tbl 33 Enable Disable From Input Enable Disable To Output Min. Max. Min. Max. Unit OE Byte0–3 d d u u DATA0–31 0 10 0 12 ns OESC d d u u SC0–7 0 10 0 12 ns MINIMUM PULSE WIDTHS Min. LEIN, LEOUT/ GENERATE, LEDIAG ud ud (Positive–going pulse) 5 ns 2584 tbl 34 (6) To Output From Input SC0–7 DATA0–31 ERROR ERROR MULT ERROR MULT ERROR Unit DATA0–3(3) 17 22(2) 16 18 ns CB0–7 (CODE ID1,0 = 00, 11) 13 17 12 14 ns CB0–7 (CODE ID1,0 = 10) 13 14 — — ns LEOUT/ GENERATE u u —10 d d 8 d d 8ns d d 15 — u u 8 u u 9ns CORRECT Not Internal Control Mode —13 — — ns DIAG MODE Not Internal Control Mode 14 22 12 17 ns CODE ID1,0 16(6) 20 15 18 ns LEIN From latched to Transparent 18 24 16 19 ns LEDIAG From latched to Transparent u u 14(6) 20 13 16 ns Internal Control LEDIAG From latched to Transparent u u 14(6) 19 14 16 ns Mode DATA0–31 Via Diagnostic Latch u u 14 22 (2) 11 14 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 6(15) 0ns CB0–7 (CODE ID 00, 11)(4, 6) d d LEOUT/ GENERATE 12 0 ns CB0–7 (CODE ID 10)(4, 6) d d LEOUT/ GENERATE 80 ns CORRECT(4, 6) u u d d LEOUT/ GENERATE 70 ns DIAG MODE(4, 6) d d LEOUT/ GENERATE 14 0 ns CODE ID1,0(4, 6) d d LEOUT/ GENERATE 90 ns LEIN(4, 6) u u d d LEOUT/ GENERATE 16 0 ns DATA0–31(4, 6) LEDIAG 33 ns |
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