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SN74AHCT245RGYR Datasheet(PDF) 3 Page - Texas Instruments |
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SN74AHCT245RGYR Datasheet(HTML) 3 Page - Texas Instruments |
3 / 16 page SN54AHCT245, SN74AHCT245 OCTAL BUS TRANSCEIVERS WITH 3STATE OUTPUTS SCLS233M − OCTOBER 1995 − REVISED SEPTEMBER 2003 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Note 4) SN54AHCT245 SN74AHCT245 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 ∆t/∆v Input transition rise or fall rate 20 20 ns/V TA Operating free-air temperature −55 125 −40 85 °C 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. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC TA = 25°C SN54AHCT245 SN74AHCT245 UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX MIN MAX UNIT VOH IOH = −50 mA 4.5 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 4.5 V 0.1 0.1 0.1 V VOL IOL = 8 mA 4.5 V 0.36 0.44 0.44 V II OE or DIR VI = 5.5 V or GND 0 V to 5.5 V ±0.1 ±1* ±1 mA IOZ A or B inputs† VO = VCC or GND 5.5 V ±0.25 ±2.5 ±2.5 mA ICC VI = VCC or GND, IO = 0 5.5 V 4 40 40 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 OE or DIR VI = VCC or GND 5 V 2.5 10 10 pF Cio A or B inputs VI = VCC or GND 5 V 4 pF * On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V. † For I/O ports, the parameter IOZ includes the input leakage current. ‡ This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC. |
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