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CD74HC191ME4 Datasheet(PDF) 11 Page - Texas Instruments |
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CD74HC191ME4 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 26 page CD54HC190, CD74HC190 CD54HC191, CD74HC191, CD54HCT191, CD74HCT191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SCHS275E − MARCH 2002 − REVISED OCTOBER 2003 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output drain current per output, IO (VO = 0 to VCC) ±35 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output source or sink current per output, IO (VO = 0 to VCC) ±25 mA . . . . . . . . . . . . . . . . . . . . . . . Continuous current through VCC or GND ±50 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2): E package 67 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M package 73 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NS package 64 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PW package 108 °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. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions for ’HC190 and ’HC191 (see Note 3) TA = 25°C TA = −55°C TO 125 °C TA = −40°C TO 85 °C UNIT MIN MAX MIN MAX MIN MAX UNIT VCC Supply voltage 2 6 2 6 2 6 V VCC = 2 V 1.5 1.5 1.5 VIH High-level input voltage VCC = 4.5 V 3.15 3.15 3.15 V VIH High-level input voltage VCC = 6 V 4.2 4.2 4.2 V VCC = 2 V 0.5 0.5 0.5 VIL Low-level input voltage VCC = 4.5 V 1.35 1.35 1.35 V VIL Low-level input voltage VCC = 6 V 1.8 1.8 1.8 V VI Input voltage 0 VCC 0 VCC 0 VCC V VO Output voltage 0 VCC 0 VCC 0 VCC V VCC = 2 V 1000 1000 1000 tt Input transition (rise and fall) time VCC = 4.5 V 500 500 500 ns tt Input transition (rise and fall) time VCC = 6 V 400 400 400 ns NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. recommended operating conditions for ’HCT191 (see Note 4) TA = 25°C TA = −55°C TO 125 °C TA = −40°C TO 85 °C UNIT MIN MAX MIN MAX MIN MAX UNIT VCC Supply voltage 4.5 5.5 4.5 5.5 4.5 5.5 V VIH High-level input voltage 2 2 2 V VIL Low-level input voltage 0.8 0.8 0.8 V VI Input voltage VCC VCC VCC V VO Output voltage VCC VCC VCC V tt Input transition (rise and fall) time 500 500 500 ns NOTE 4: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. |
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