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CD74ACT297-MIL Datasheet(PDF) 7 Page - Texas Instruments |
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CD74ACT297-MIL Datasheet(HTML) 7 Page - Texas Instruments |
7 / 18 page CD74ACT297 DIGITAL PHASE-LOCKED LOOP SCHS297D – AUGUST 1998 – REVISED JUNE 2002 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC TA = 25°C MIN MAX UNIT PARAMETER TEST CONDITIONS VCC MIN MAX MIN MAX UNIT IO = –50 µA 4.5 V 4.4 4.4 VOH VI = VIH or VIL IO = –24 mA 4.5 V 3.4 3.1 V IO = –75 mA 5.5 V 3.3 IO = 50 µA 4.5 V 0.1 0.1 VOL VI =VIH or VIL IO = 24 mA 4.5 V 0.9 1.1 V IO = 75 mA† 5.5 V 2.9 II VI = VCC or GND 5.5 V ±0.1 ±1 mA ICC (MSI) VI = VCC or GND 5.5 V 8 80 mA ICC (SSI/FF) VI = VCC or GND 5.5 V 4 40 mA DICC VI = VCC –2.1 V 4.5 V to 5.5 V 2.4 2.8 mA † Test one output at a time for a 1-second maximum duration. Measurement is made by forcing current and measuring voltage to minimize power dissipation. Test verifies a minimum 50- Ω transmission-line drive capability at 85°C. ACT INPUT LOAD INPUT UNIT LOAD† ENCTR, D/U 0.1 A, B, C, D, K CLK, φA2 0.2 I/D CLK, φA1, φB 0.5 † Unit Load is ∆ICC limit specified in electrical characteristics table (e.g., 2.4 mA at 25 °C). timing requirements over recommended supply-voltage range and recommended operating free-air temperature range (unless otherwise noted) PARAMETER TA = 25°C MIN MAX UNIT PARAMETER MIN MAX MIN MAX UNIT f lk Clock frequency K CLK 55 45 MHz fclock Clock frequency I/D CLK 40 35 MHz t Pulse duration K CLK 6 8 ns tw Pulse duration I/D CLK 7 9 ns t Setup time before K CLK ↑ D/U 13 17 ns tsu Setup time before K CLK ↑ ENCTR 12 16 ns th Hold time after K CLK ↑ D/U 3 7 ns th Hold time after K CLK ↑ ENCTR 2 6 ns |
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