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SN74ABT245B 데이터시트(PDF) 4 Page - Texas Instruments |
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SN74ABT245B 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 25 page SN54ABT245A, SN74ABT245B OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS081L − JANUARY 1991 − REVISED APRIL 2005 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS TA = 25°C SN54ABT245A SN74ABT245B UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN MAX MIN MAX UNIT VIK VCC = 4.5 V, II = −18 mA −1.2 −1.2 −1.2 V VCC = 4.5 V, IOH = −3 mA 2.5 2.5 2.5 V VCC = 5 V, IOH = −3 mA 3 3 3 V VOH V 45V IOH = −24 mA 2 2 V VCC = 4.5 V IOH = −32 mA 2* 2 V V 45V IOL = 48 mA 0.55 0.55 V VOL VCC = 4.5 V IOL = 64 mA 0.55* 0.55 V Vhys 100 mV Control inputs VCC = 0 to 5.5 V, VI = VCC or GND ±1 ±1 ±1 II A or B ports VCC = 2.1 V to 5.5 V, VI = VCC or GND ±20 ±100 ±20 μA IOZPU VCC = 0 to 2.1 V, VO = 0.5 V to 2.7 V, OE = X ±50 ±50 ±50 μA IOZPD VCC = 2.1 V to 0, VO = 0.5 V to 2.7 V, OE = X ±50 ±50 ±50 μA IOZH‡ VCC = 2.1 V to 5.5 V, VO = 2.7 V, OE ≥ 2 V 10 10 10 μA IOZL‡ VCC = 2.1 V to 5.5 V, VO = 0.5 V, OE ≥ 2 V −10 −10 −10 μA Ioff VCC = 0, VI or VO ≤ 5.5 V ±100 ±100 μA ICEX VCC = 5.5 V, VO = 5.5 V Outputs high 50 50 50 μA IO§ VCC = 5.5 V, VO = 2.5 V −50 −140 −180 −50 −180 −50 −180 mA VCC = 5.5 V, Outputs high 5 250 250 250 μA ICC A or B ports VCC = 5.5 V, IO = 0, Outputs low 22 30 30 30 mA ICC A or B ports IO 0, VI = VCC or GND Outputs disabled 1 250 250 250 μA Data inputs VCC = 5.5 V, One input at 3.4 V, Outputs enabled 1.5 1.5 1.5 mA ΔICC¶ Data inputs One input at 3.4 V, Other inputs at VCC or GND Outputs disabled 50 50 50 μA Control inputs VCC = 5.5 V, One input at 3.4 V, Other inputs at VCC or GND 1.5 1.5 1.5 mA Ci Control inputs VI = 2.5 V or 0.5 V 4 pF Cio A or B ports VO = 2.5 V or 0.5 V 8 pF * On products compliant to MIL-PRF-38535, this parameter does not apply. † All typical values are at VCC = 5 V. ‡ The parameters IOZH and IOZL include the input leakage current. § Not more than one output should be tested at a time, and the duration of the test should not exceed one second. ¶ This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND. |
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