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MCM69R736CZP4R Datasheet(PDF) 9 Page - Motorola, Inc |
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MCM69R736CZP4R Datasheet(HTML) 9 Page - Motorola, Inc |
9 / 20 page MCM69R736C •MCM69R818C 9 MOTOROLA FAST SRAM AC INPUT CHARACTERISTICS (See Note 1) Parameter Symbol Min Max Notes AC Input Logic High (See Figure 4) VIH (ac) Vref + 200 mV — AC Input Logic Low (See Figures 2 and 4) VIL (ac) — Vref – 200 mV 2 Input Reference Peak–to–Peak AC Voltage Vref (ac) — 5% Vref (dc) 3 Clock Input Differential Voltage Vdif (ac) 400 mV VDDQ + 600 mV 4 NOTES: 1. Inputs may overshoot to VDD + 1.5 V (peak) for up to 35% tKHKH (e.g., 1.5 ns at a clock cycle time of 4.4 ns). See Figure 2. 2. Inputs may undershoot to –0.5 V (peak) for up to 20% tKHKH (e.g., 2 ns at a clock cycle time of 10 ns). See Figure 2. 3. Although considerable latitude in the selection of the nominal dc value (i.e., rms value) of Vref is supported, the peak–to–peak ac compo- nent superimposed on Vref may not exceed 5% of the dc component of Vref. 4. Minimum instantaneous differential input voltage required for differential input clock operation. VIH VSS –1.0 V –1.5 V 35% tKHKH Figure 2. Undershoot Voltage CROSSING POINT VDDQ VSS VTR VDIF VCP VCM* Figure 3. Differential Inputs/Common Mode Input Voltage *VCM, the Common Mode Input Voltage, equals VTR – [(VTR – VCP)/2]. VIH(ac) Vref VIL(ac) VDDQ VSS Figure 4. AC Input Conditions Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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