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SN75970BDGG Datasheet(PDF) 8 Page - Texas Instruments |
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SN75970BDGG Datasheet(HTML) 8 Page - Texas Instruments |
8 / 23 page SN75970B SCSI DIFFERENTIAL CONVERTER-CONTROL SLLS323A – NOVEMBER 1999 – REVISED JANUARY 2000 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER FROM (INPUT) TO (OUTPUT) TEST CONDITIONS MIN TYP† MAX UNIT AATN – AC/D – BATN ± BC/D ± See Figure 3 35 17 7 ’B1 AI/O – AMSG – BI/O ± BMSG ± See Figure 3 3.5 17.7 B1 AACK BACK ± 3.1 15.3 AACK – AREQ – BACK ± BREQ ± VCC = 5 V, TA = 25°C 4.2 12.2 td1 td2 Delay time, A to B, high- to low level or low to high lev AREQ – BREQ ± VCC = 5 V, TA = 70°C 4.7 12.7 ns td1, td2 low-level or low- to high-lev- el output AATN – AC/D – BATN ± BC/D ± See Figure 3 55 15 7 ns ’B2 AI/O – AMSG – BI/O ± BMSG ± See Figure 3 5.5 15.7 B2 AACK BACK ± 4.5 13.3 AACK – AREQ – BACK ± BREQ ± VCC = 5 V, TA = 25°C 6.2 10.2 AREQ – BREQ ± VCC = 5 V, TA = 70°C 6.7 10.7 t k( ) Skew part to part ’B1 AACK – AREQ – BACK ± BREQ ± See Note 4 8 ns tsk(pp) Skew, part-to-part ’B2 AACK – AREQ – BACK ± BREQ ± See Note 4 4 ns t k( ) Pulse skew ’B1 AACK – AREQ – BACK ± BREQ ± See Note 5 8 ns tsk(p) Pulse skew ’B2 AACK – AREQ – BACK ± BREQ ± See Note 5 4 ns ’B1 BATN ± BC/D ± BI/O ± BMSG ± AATN – AC/D – AI/O – AMSG – See Figure 4 5.1 17.9 B1 BACK ± AACK 5.3 18 BACK ± BREQ ± AACK – AREQ – VCC = 5 V, TA = 25°C 6.3 15.2 td3 td4 Delay time, B to A, high- to low level or low to high lev BREQ ± AREQ – VCC = 5 V, TA = 70°C 6.7 15.6 ns td3, td4 low-level or low- to high-lev- el output ’B2 BATN ± BC/D ± BI/O ± BMSG ± AATN – AC/D – AI/O – AMSG – See Figure 4 7.3 14.6 ns B2 BACK ± AACK 7.5 14.2 BACK ± BREQ ± AACK – AREQ – VCC = 5 V, TA = 25°C 8.5 13 BREQ ± AREQ – VCC = 5 V, TA = 70°C 8.9 13.4 t k( ) Skew part to part ’B1 BACK ± BREQ ± AACK – AREQ – See Note 4 9 ns tsk(pp) Skew part-to-part ’B2 BACK ± BREQ ± AACK – AREQ – See Note 4 4.5 ns t k( ) Pulse skew ’B1 BACK ± BREQ ± AACK – AREQ – See Note 5 8 ns tsk(p) Pulse skew ’B2 BACK ± BREQ ± AACK – AREQ – See Note 5 4 ns † All typical values are at VCC = 5 V, TA = 25°C. NOTES: 4. Part-to-part skew is the magnitude of the difference in propagation delay times between any two devices when both operate with the same supply voltages, the same temperature, and the same loads. 5. Pulse skew is the difference between the high-to-low and low-to-high propagation delay times of any single channel. |
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