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VS3345 데이터시트(PDF) 1 Page - Vaishali Semiconductor |
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VS3345 데이터시트(HTML) 1 Page - Vaishali Semiconductor |
1 / 6 page 2001-04-12 Page 1 MDSS-0010-01 www.vaishali.com Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063 Applications •= 5V to 3.3V translation in mixed-supply environment •= Hot-swap interface •= Logic replacement •= Bus isolation General Description The VS3345 and VS32345 are high-speed TTL–compatible 8-bit bus switches. The VS3345 contains eight high-speed bus switches, with common active low (/OE) and active high (OE) enables. The low ON resistance of the VS3345 allows inputs to be connected to outputs, without adding propagation delay and without generating additional signal noise. The VS32345 has 25 Ω resistors in series with the switches to reduce ground-bounce noise and signal reflection. The VS3345 and VS32345 bus switches switches enable 5V to 3.3V translation when used with a diode in the power supply line. In addition, the high off-isolation in the ‘disable’ mode makes VS3345 and VS32345 ideal interface elements for hot-swap applications. Figure 1. Functional Block Diagram Figure 2. Pin Configuration VS3345 / VS32345 High Speed CMOS VSwitch 8-Bit Bus Switches with Active High & Low Enables Features •= Enhanced N-FET with no DC path to VCC or GND in normal operating signal voltage range. •= Low impedance bidirectional data flow: 5 Ω (VS3345) and 25Ω (VS32345) •= Near-zero propagation delay •= Zero added ground bounce or signal noise •= TTL-compatible control signals •= Undershoot clamp diodes on all switch and control pins •= ESD rating >2000V (Human Body Model) or >200V (Machine Model) •= Latch-up current >100mA •= Available in 150-mil wide QSOP package (All Pins Top View) QSOP GND VCC 1 2 3 4 8 5 6 7 9 10 20 19 18 17 16 15 14 13 12 11 OE A0 A1 A2 A3 A4 A5 A6 A7 /OE B0 B2 B3 B4 B5 B1 B6 B7 OE B7 B0 B1 B2 A0 B3 B4 B5 B6 A1 A2 A3 A4 A5 A6 A7 /OE |
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