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SN74AS856 数据表(PDF) 6 Page - Texas Instruments |
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SN74AS856 数据表(HTML) 6 Page - Texas Instruments |
6 / 9 page SN54AS856, SN74AS856 8BIT UNIVERSAL TRANSCEIVER PORT CONTROLLERS SDAS032A − DECEMBER 1983 − REVISED MARCH 1985 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 6 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54AS856 SN74AS856 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-A8 VCC = 4.5 V, IOH = − 12 mA 2 3.2 VOH B1-B8 VCC = 4.5 V, IOH = − 15 mA 2 3.3 V All outputs VCC = 4.5 V to 5.5 V, IOH = − 2 mA VCC −2 VCC −2 All outputs VCC = 4.5 V, IOL = 32 mA 0.25 0.5 VOL except Q8 VCC = 4.5 V, IOL = 48 mA 0.35 0.5 V Q8 VCC = 4.5 V, IOL = 20 mA 0.5 0.5 OEB, OEA, MODE VCC = 5.5 V, VI = 7 V 0.2 0.2 II CLK and SERIN VCC = 5.5 V, VI = 7 V 0.1 0.1 mA A1-A8, B1-B8 VCC = 5.5 V, VI = 5.5 V 0.2 0.2 OEB, OEA, MODE 40 40 IIH CLK and SERIN VCC = 5.5 V, VI = 2.7 V 20 20 µA A1-A8, B1-B8‡ 70 70 OEB, OEA, MODE −1 −1 IIL CLK and SERIN VCC = 5.5 V, VI = 0.4 V − 0.5 − 0.5 mA A1-A8, B1-B8‡ − 0.5 − 0.5 IO§ Except Q8 VCC = 5.5 V, VO = 2.25 V −30 −112 −30 −112 mA IO§ Q8 VCC = 5.5 V, VO = 2.25 V −20 −112 −20 −112 mA ICC VCC = 5.5 V 118 200 118 200 mA † All typical values are at VCC = 5 V, TA = 25°C. ‡ For I/O ports, the parameters III and IIL include the output currents IOZH and IOZL, respectively. § The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. |
类似零件编号 - SN74AS856 |
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类似说明 - SN74AS856 |
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