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SN74SSTU32864ZKER データシート(PDF) 8 Page - Texas Instruments |
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SN74SSTU32864ZKER データシート(HTML) 8 Page - Texas Instruments |
8 / 14 page SN74SSTU32864 25-BIT CONFIGURABLE REGISTERED BUFFER WITH SSTL_18 INPUTS AND OUTPUTS SCES434 – MARCH 2003 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TERMINAL FUNCTIONS TERMINAL NAME DESCRIPTION ELECTRICAL CHARACTERISTICS GND Ground Ground input VCC Power-supply voltage 1.8 V nominal VREF Input reference voltage 0.9 V nominal CLK Positive master clock input Differential input CLK Negative master clock input Differential input C0, C1 Configuration control inputs – Register A, Register B, 1:1, 1:2 select LVCMOS inputs RESET Asynchronous reset input – resets registers and disables VREF data and clock differential-input receivers LVCMOS input D1–D25 Data inputs – clocked in on the crossing of the rising edge of CLK and the falling edge of CLK SSTL_18 inputs CSR, DCS Chip select inputs – disables D1-D25† outputs switching when both inputs are high SSTL_18 inputs DODT The outputs of this register bit will not be suspended by the DCS and CSR control. SSTL_18 input DCKE The outputs of this register bit will not be suspended by the DCS and CSR control. SSTL_18 input Q1–Q25‡ Data outputs that are suspended by the DCS and CSR control 1.8 V CMOS outputs QCS Data output that will not be suspended by the DCS and CSR control 1.8 V CMOS output QODT Data output that will not be suspended by the DCS and CSR control 1.8 V CMOS output QCKE Data output that will not be suspended by the DCS and CSR control 1.8 V CMOS output NC No internal connection DNU Do not use – inputs are in standby-equivalent mode, and outputs are driven low. † Data inputs = D2, D3, D5, D6, D8–D25 when C0 = 0 and C1 = 0 Data inputs = D2, D3 D5, D6, D8–D14 when C0 = 0 and C1 = 1 Data inputs = D1–D6, D8–D10, D12, D13 when C0 = 1 and C1 = 1. ‡ Data outputs = Q2, Q3, Q5, Q6, Q8–Q25 when C0 = 0 and C1 = 0 Data outputs = Q2, Q3 Q5, Q6, Q8–Q14 when C0 = 0 and C1 = 1 Data outputs = Q1–Q6, Q8–Q10, Q12, Q13 when C0 = 1 and C1 = 1. |
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同様の説明 - SN74SSTU32864ZKER |
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