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SN74AHCT123ADB Fiches technique(PDF) 4 Page - Texas Instruments |
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SN74AHCT123ADB Fiches technique(HTML) 4 Page - Texas Instruments |
4 / 21 page SN54AHCT123A, SN74AHCT123A DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS SCLS420G – JUNE 1998 – REVISED APRIL 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Note 4) SN54AHCT123A SN74AHCT123A UNIT MIN MAX MIN MAX UNIT VCC Supply voltage 4.5 5.5 4.5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V VI Input voltage 0 5.5 0 5.5 V VO Output voltage 0 VCC 0 VCC V IOH High-level output current –8 –8 mA IOL Low-level output current 8 8 mA Rext External timing resistance 1k 1k Ω ∆t/∆VCC Power-up ramp rate 1 1 ms/V TA Operating free-air temperature –55 125 –40 85 °C NOTE 4: Unused Rext/Cext terminals should be left unconnected. All remaining 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. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC TA = 25°C SN54AHCT123A SN74AHCT123A UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX MIN MAX UNIT VOH IOH = –50 mA 45 V 4.4 4.5 4.4 4.4 V VOH IOH = –8 mA 4.5 V 3.94 3.8 3.8 V VOL IOL = 50 mA 45 V 0.1 0.1 0.1 V VOL IOL = 8 mA 4.5 V 0.36 0.5 0.44 V Rext/Cext† VI = VCC or GND 5.5 V ±0.25 ±2.5 ±2.5 II A, B, and CLR VI = VCC or GND 0 V to 5.5 V ±0.1 ±1* ±1 mA ICC Quiescent VI = VCC or GND, IO = 0 5.5 V 4 40 40 mA ICC Active state (per circuit) VI = VCC or GND, Rext/Cext = 0.5 VCC 5.5 V 560 750 975 975 mA ∆ICC‡ One input at 3.4 V, Other inputs at VCC or GND 5.5 V 1.35 1.5 1.5 mA Ci VI = VCC or GND 5 V 1.9 10 10 pF * On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V. † This test is performed with the terminal in the off-state condition. ‡ This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or VCC. timing requirements over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) TEST CONDITIONS TA = 25°C SN54AHCT123A SN74AHCT123A UNIT TEST CONDITIONS MIN TYP MAX MIN MAX MIN MAX UNIT t Pulse CLR 5 5 5 ns tw duration A or B trigger 5 5 5 ns t Pulse retrigger time Rext = 1 kΩ, Cext = 100 pF § 60 § § ns trr Pulse retrigger time Rext = 1 kΩ, Cext = 0.01 mF § 1.5 § § ms § See retriggering data in the application information section. |
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Description similaire - SN74AHCT123ADB |
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