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54ACTQ16245 数据表(PDF) 2 Page - National Semiconductor (TI) |
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54ACTQ16245 数据表(HTML) 2 Page - National Semiconductor (TI) |
2 / 6 page Functional Description The ’ACTQ16245 contains sixteen non-inverting bidirec- tional buffers with TRI-STATE outputs. The device is byte controlled with each byte functioning identically, but indepen- dent of the other. The control pins can be shorted together to obtain full 16-bit operation. The following description applies to each byte. When the T/R input is HIGH, then Bus A data is transmitted to Bus B. When the T/R input is LOW, Bus B data is transmitted to Bus A. The TRI-STATE outputs are controlled by an Output Enable (OE n) input for each byte. When OE n is LOW, the outputs are in 2-state mode. When OE n is HIGH, the outputs are in the high impedance mode, but this does not interfere with entering new data into the inputs. Truth Tables Inputs Outputs OE 1 T/R 1 L L Bus B 0–B7 Data to Bus A0–A7 L H Bus A 0–A7 Data to Bus B0–B7 H X HIGH-Z State on A 0–A7,B0–B7 Inputs Outputs OE 2 T/R 2 L L Bus B 8–B15 Data to Bus A8–A15 L H Bus A 8–A15 Data to Bus B8–B15 H X HIGH-Z State on A 8–A15,B8–B15 H = High Voltage Level L = Low Voltage Level X = Immaterial Z = High Impedance Logic Diagram DS010926-3 www.national.com 2 |
类似零件编号 - 54ACTQ16245 |
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类似说明 - 54ACTQ16245 |
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