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SN74AS856 датащи(PDF) 5 Page - Texas Instruments |
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SN74AS856 датащи(HTML) 5 Page - Texas Instruments |
5 / 9 page SN54AS856, SN74AS856 8BIT UNIVERSAL TRANSCEIVER PORT CONTROLLERS SDAS032A − DECEMBER 1983 − REVISED MARCH 1985 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 absolute maximum ratings over free-air temperature range Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage: All inputs 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I/O ports 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage applied to a disabled 3-state output 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range: SN54AS856 −55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74AS856 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . recommended operating conditions SN54AS856 SN74AS856 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 IOH High-level output current A1-A8, B1-B8 −12 −15 mA IOH High-level output current Q8 −2 −2 mA IOL Low-level output current A1-A8, B1-B8 32 48 mA IOL Low-level output current Q8 20 20 mA fclock Clock frequency 0 45 0 50 MHz tw Duration of clock pulse 11 10 ns tsu Setup time before CLK ↑ A1-A8, B1-B8 SERIN 5.5 5.5 ns tsu Setup time before CLK ↑ OEB, OEA, MODE 5.5 5.5 ns th Hold-time, data after CLK ↑ A1-A8, B1-B8 SERIN 0 0 ns th Hold-time, data after CLK ↑ OEB, OEA, MODE 0 0 ns TA Operating free-air temperature −55 125 0 70 °C |
Аналогичный номер детали - SN74AS856 |
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Аналогичное описание - SN74AS856 |
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