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SN74BCT646DWRE4 数据表(PDF) 6 Page - Texas Instruments |
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SN74BCT646DWRE4 数据表(HTML) 6 Page - Texas Instruments |
6 / 15 page SN54BCT646, SN74BCT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3STATE OUTPUTS SCBS037D − AUGUST 1989 − REVISED MAY 2004 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54BCT646 SN74BCT646 UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = −18 mA −1.2 −1.2 V IOH = − 3 mA 2.4 3.3 2.4 3.3 VOH VCC = 4.5 V IOH = −12 mA 2 3.2 V VOH VCC = 4.5 V IOH = −15 mA 2 3.1 V VOL VCC = 4.5 V IOL = 48 mA 0.38 0.55 V VOL VCC = 4.5 V IOL = 64 mA 0.42 0.55 V II A or B port VCC = 5.5 V, VI = 5.5 V 1 1 mA II Control inputs VCC = 5.5 V, VI = 5.5 V 1 1 mA IIH‡ A or B port VCC = 5.5 V, VI = 2.7 V 70 70 A IIH‡ Control inputs VCC = 5.5 V, VI = 2.7 V 20 20 µA IIL‡ A or B port VCC = 5.5 V, VI = 0.5 V − 0.7 − 0.7 mA IIL‡ Control inputs VCC = 5.5 V, VI = 0.5 V − 0.7 − 0.7 mA IOS§ VCC = 5.5 V, VO = 0 − 100 − 225 − 100 − 225 mA ICCL A or B port VCC = 5.5 V, VI = GND 42 67 42 67 mA ICCH A or B port VCC = 5.5 V, VI = 4.5 V 5.6 9 5.6 9 mA ICCZ A or B port VCC = 5.5 V, VI = GND 10 16 10 16 mA Ci Control inputs VCC = 5 V, VI = 2.5 V or 0.5 V 6 6 pF Cio A or B port VCC = 5 V, VO = 2.5 V or 0.5 V 12 14 pF † All typical values are at VCC = 5 V, TA = 25°C. ‡ For I/O ports, the parameters IIH and IIL include the off-state output current. § Not more than one output should be tested at a time, and the duration of the test should not exceed one second. timing requirements over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) VCC = 5 V, TA = 25°C SN54BCT646 SN7BCT646 UNIT MIN MAX MIN MAX MIN MAX UNIT fclock Clock frequency 83 83 83 MHz tw Pulse duration, CLK high or low 6 6 6 ns tsu Setup time, A or B before CLKAB ↑ or CLKBA↑ 6 7 6 ns th Hold time, A or B after CLKAB ↑ or CLKBA↑ 0.5 0.5 0.5 ns |
类似零件编号 - SN74BCT646DWRE4 |
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类似说明 - SN74BCT646DWRE4 |
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