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SN54F245FK Datasheet(PDF) 3 Page - Texas Instruments |
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SN54F245FK Datasheet(HTML) 3 Page - Texas Instruments |
3 / 7 page SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A – MARCH 1987 – REVISED OCTOBER 1993 2–3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions SN54F245 SN74F245 UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V IIK Input clamp current –18 –18 mA IOH High level output current A1 thru A8 –3 –3 mA IOH High-level output current B1 thru B8 –12 –15 mA IOL Low level output current A1 thru A8 20 24 mA IOL Low-level output current B1 thru B8 48 64 mA TA Operating free-air temperature –55 125 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54F245 SN74F245 UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = – 18 mA – 1.2 – 1.2 V A1 thru A8 VCC =4 5V IOH = – 1 mA 2.5 3.4 2.5 3.4 A1 thru A8 VCC = 4.5 V IOH = – 3 mA 2.4 3.3 2.4 3.3 VOH B1 thru B8 VCC =4 5V IOH = – 12 mA 2 3.2 V B1 thru B8 VCC = 4.5 V IOH = – 15 mA 2 3.1 Any output VCC = 4.75 V, IOH = – 1 mA to – 3 mA 2.7 A1 thru A8 VCC =4 5V IOL = 20 mA 0.3 0.5 VOL A1 thru A8 VCC = 4.5 V IOL = 24 mA 0.35 0.5 V VOL B1 thru B8 VCC =4 5V IOL = 48 mA 0.38 0.55 V B1 thru B8 VCC = 4.5 V IOL = 64 mA 0.42 0.55 II A and B VCC =5 5V VI = 5.5 V 1 1 mA II DIR, OE VCC = 5.5 V VI = 7 V 0.1 0.1 mA I ‡ A and B VCC =5 5V VI =2 7V 70 70 µA IIH‡ DIR, OE VCC = 5.5 V, VI = 2.7 V 20 20 µA I ‡ A and B VCC =5 5V VI =0 5V – 0.65 – 0.65 mA IIL‡ DIR, OE VCC = 5.5 V, VI = 0.5 V – 1.2 – 1.2 mA IOS§ A1 thru A8 VCC =5 5V VO =0 –60 – 150 –60 – 150 mA IOS§ B1 thru B8 VCC = 5.5 V, VO = 0 – 100 – 225 – 100 – 225 mA Outputs high 70 90 70 90 ICC VCC = 5.5 V Outputs low 95 120 95 120 mA Outputs disabled 85 110 85 110 † 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 shorted at a time, and the duration of the short circuit should not exceed one second. |
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