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IDT72021 Datasheet(PDF) 6 Page - Integrated Device Technology |
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IDT72021 Datasheet(HTML) 6 Page - Integrated Device Technology |
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6 / 14 page  5.09 6 MILITARY AND COMMERCIAL TEMPERATURE RANGES IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT 1K x 9, 2K x 9, 4K x 9 AC ELECTRICAL CHARACTERISTICS — IDT72031, IDT72041(1) (Commercial: VCC = 5.0V ±10%, TA = 0°C to +70°C; Military: VCC = 5V±10%, TA = –55°C to +125°C) Com'l Mil. Com'l and Mil. 72031L35 72031L40 72031L50 72041L35 72041L40 72041L50 Symbol Parameter Min. Max. Min. Max. Min. Max. Unit fS Shift Frequency — 22.2 — 20 — 15 MHz tRC R Cycle Time 45 — 50 — 65 — ns tA Access Time — 35 — 40 — 50 ns tRR R Recovery Time 10 — 10 — 15 — ns tRPW R Pulse Width(2) 35 — 40 — 50 — ns tRLZ R Pulse LOW to Data Bus at Low-Z(3) 5— 5— 10 — ns tWLZ W Pulse HIGH to Data Bus at Low-Z(3,4) 5— 5— 5— ns tDV Data Valid from R Pulse HIGH 5 — 5 — 5 — ns tRHZ R Pulse HIGH to Data Bus at High-Z(3) — 20 — 25 — 30 ns tWC W Cycle Time 45 — 50 — 65 — ns tWPW W Pulse Width(2) 35 — 40 — 50 — ns tWR W Recovery Time 10 — 10 — 15 — ns tDS Data Set-up Time 18 — 20 — 30 — ns tDH Data Hold Time 0 — 0 — 5 — ns tRSC RS Cycle Time 45 — 50 — 65 — ns tRS RS Pulse Width(2) 35 — 40 — 50 — ns tRSS RS Set-up Time 35 — 40 — 50 — ns tRSR RS Recovery Time 10 — 10 — 15 — ns tRTC RT Cycle Time 45 — 50 — 65 — ns tRT RT Pulse Width(2) 35 — 40 — 50 — ns tRTR RT Recovery Time 10 — 10 — 15 — ns tRSF1 RS to EF and AEF LOW — 45 — 50 — 65 ns tRSF2 RS to HF and FF HIGH — 45 — 50 — 65 ns tREF R LOW to EF LOW — 30 — 35 — 45 ns tRFF R HIGH to FF HIGH — 30 — 35 — 45 ns tRPE R Pulse Width After EF HIGH 35 — 40 — 50 — ns tWEF W HIGH to EF HIGH — 30 — 35 — 45 ns tWFF W LOW to EF LOW — 30 — 35 — 45 ns tWHF W LOW to HF LOW — 45 — 50 — 65 ns tRHF R HIGH to HF HIGH — 45 — 50 — 65 ns tWPF W Pulse Width after FF HIGH 35 — 40 — 50 — ns tRF R HIGH to Transitioning AEF — 45 — 50 — 65 ns tWF W LOW to Transitioning AEF — 45 — 50 — 65 ns tOEHZ OE HIGH to High-Z (Disable)(3) 017 0 20 025 ns tOELZ OE LOW to Low-Z (Enable)(3) 017 0 20 025 ns tAOE OE LOW Data Valid (Q0–Q8) — 20 — 25 — 30 ns NOTES: 2677 tbl 09 1. Timings referenced as in AC Test Conditions. 2. Pulse widths less than minimum value are not allowed. 3. Values guaranteed by design, not currently tested. 4. Only applies to read data flow-through mode. |
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