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SN74AS877DW Folha de dados(PDF) 5 Page - Texas Instruments |
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SN74AS877DW Folha de dados(HTML) 5 Page - Texas Instruments |
5 / 10 page SN54AS877, SN74AS877 8BIT UNIVERSAL TRANCEIVER PORT CONTROLLERS SDAS234 − D2661, DECEMBER 1982 − REVISED AUGUST 1985 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 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: SN54AS877 −55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74AS877 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . recommended operating conditions SN54AS877 SN74AS877 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 input voltage A1-A8, B1-B8 −12 −15 mA IOH High-level input voltage Q8 −2 −2 mA IOL Low-level input voltage A1-A8, B1-B8 32 48 mA Q8 20 20 fclock Clock frequency 0 45 0 50 MHz tw Pulse duration, CLK 11 10 ns A1-A8, B1-B8 5.5 5.5 tsu Setup time before CLK ↑ SERIN 5.5 5.5 ns S0, S1, S2 5.5 5.5 A1-A8, B1-B8 0 0 th Hold time, data after CLK ↑ SERIN 0 0 ns S0, S1, S2 0 0 ns TA Operating free-air temperature −55 125 0 70 °C |
Nº de peça semelhante - SN74AS877DW |
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