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SM5838AS Datasheet(PDF) 4 Page - Nippon Precision Circuits Inc |
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SM5838AS Datasheet(HTML) 4 Page - Nippon Precision Circuits Inc |
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4 / 14 page  SM5838AS NIPPON PRECISION CIRCUITS—4 AC Characteristics Input timing 1. All voltages measured with relative to VSS. 2. Input timing input voltage levels are VIL = 0 V and VIH = 3.0/2.5 V (5/3 V supply). Transition time is measured between VIH and VIL. 3. Input signal reference level is VTH = 1.5 V. 4. Input timing ratings measured with tT = 5 ns. Parameter Symbol Condition 5 V supply 3 V supply Unit min typ max min typ max Clock cycle time tCK 30 – – 50 – – ns Clock pulsewidth tCKW 13 – – 23 – – ns Input data setup time tDS 7–– 10 –– ns Input data hold time tDH 3––4–– ns RW and RR setup time tRS 10 – – 17 – – ns RW and RR hold time tRH 0––0–– ns WE setup time tWES 13 – – 23 – – ns WE hold time tWEH 0––0–– ns RE setup time tRES 13 – – 23 – – ns RE hold time tREH 0––0–– ns OE setup time tOES 10 – – 17 – – ns OE hold time tOEH 0––0–– ns Rise and fall transition times tT – – 30 – – 30 ns Normal-voltage (5 V) specification Low-voltage (3 V) specification ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, CKW t RS t RS t RH t RH t RW t RH t RS t RH t RS t RR t WEH t WEH t WES t WES t RES t RES t REH t REH t OEH t OEH t OES t OES t DS t DS t DH t DH t CLK RW RR WE RE OE DIN 3.0V 0V 5ns 5ns CKW t CK t 2.5V 0V 5ns 5ns |
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