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CD74ACT297M 数据表(PDF) 6 Page - Texas Instruments |
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CD74ACT297M 数据表(HTML) 6 Page - Texas Instruments |
6 / 12 page CD74ACT297 DIGITAL PHASE-LOCKED LOOP SCHS297A – AUGUST 1998 – REVISED SEPTEMBER 1999 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 φA2 Divide-By-K Counter Divide-By-N Counter Mfc I/D Circuit I/D OUT I/D CLK Carry Borrow K CLK XORPD OUT φB fin, φin 2 Nfc fout, φout φA1 J K ECPD ENCTR D/U Figure 3. DPLL Using Both Phase Detectors in a Ripple-Cancellation Scheme absolute maximum ratings over recommended operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC –0.5 V to 6 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC input diode current, IIK (VI < –0.5 V or VI > VCC + 0.5 V) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC input diode current, IOK (VO < –0.5 V or VO > VCC + 0.5 V) ±50 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC output source or sink current per output pin, IO (VO > –0.5 V or VO < VCC + 0.5 V) ±50 mA . . . . . . . . . . Continuous current through VCC or GND (Note 1) ±100 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2) 73 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg –65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. For up to four outputs per device, add ±25 mA for each additional output. 2. The package thermal impedance is calculated in accordance with JESD 51. recommended operating conditions MIN MAX UNIT VCC Supply voltage 4.5 5.5 V VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V VI Input voltage 0 VCC V VO Output voltage 0 VCC V dt/dv Input rise and fall slew rate 10 ns TA Operating free-air temperature range –40 85 °C |
类似零件编号 - CD74ACT297M |
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类似说明 - CD74ACT297M |
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