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SN74BCT2953NT Datasheet(PDF) 3 Page - Texas Instruments |
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SN74BCT2953NT Datasheet(HTML) 3 Page - Texas Instruments |
3 / 5 page SN74BCT2953 OCTAL BUS TRANSCEIVER AND REGISTER WITH 3STATE OUTPUTS SCBS105B − DECEMBER 1990 − REVISED NOVEMBER 1993 2−3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 recommended operating conditions (see Note 2) MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 V VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V IIK Input clamp current −18 mA IOH High-level output current A ports −3 mA IOH High-level output current B ports −15 mA IOL Low-level output current A ports 24 mA IOL Low-level output current B ports 64 mA TA Operating free-air temperature 0 70 °C NOTE 2: Unused or floating pins (input or I/O) must be held high or low. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = − 18 mA −1.2 V A port VCC = 4.5 V IOH = − 1 mA 2.5 3.4 A port VCC = 4.5 V IOH = − 3 mA 2.4 3.3 VOH IOH = − 3 mA 2.4 3.3 V VOH B port VCC = 4.5 V IOH = − 12 mA 3.2 V B port VCC = 4.5 V IOH = − 15 mA 2 3.1 VOL A port VCC = 4.5 V IOL = 24 mA 0.35 0.5 V VOL B port VCC = 4.5 V IOL = 64 mA 0.42 0.55 V II‡ Control inputs VCC = 5.5 V, VI = 5.5 V 1 mA II‡ A or B ports VCC = 5.5 V, VI = 5.5 V 0.1 mA IIH‡ Control inputs VCC = 5.5 V, VI = 2.7 V 70 A IIH‡ A or B ports VCC = 5.5 V, VI = 2.7 V 20 µA IIL‡ Control inputs VCC = 5.5 V, VI = 0.5 V −70 A IIL‡ A or B ports VCC = 5.5 V, VI = 0.5 V −20 µA IOS§ Any A VCC = 5.5 V, VO = 0 −60 −150 mA IOS§ Any B VCC = 5.5 V, VO = 0 −100 −250 mA ICCH¶ VCC = 5.5 V 2 5 mA ICCL¶ VCC = 5.5 V 38 55 mA ICCZ VCC = 5.5 V 2 5 mA Ci Control inputs VCC = 5 V, VI = 2.5 V or 0.5 V 6 pF Cio A or B ports VCC = 5 V, VO = 2.5 V or 0.5 V 12.5 pF † All typical values are at VCC = 5 V, TA = 25°C. ‡ For I/O ports, the parameters IIH and IIL include the off-shoot output current. § Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second. ¶ ICCH and ICCL are measured in the A-to-B mode. |
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