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VS3244

Vaishali Semiconductor
Part Number VS3244
Manufacturer Vaishali Semiconductor
Description High Speed CMOS VSwitch Dual 4-Bit Bus Switches
Published Apr 16, 2005
Detailed Description VS3244 / VS32244 High Speed CMOS VSwitch Dual 4-Bit Bus Switches Applications •= •= 5V to 3.3V translation in mixed-supp...
Datasheet PDF File VS3244 PDF File

VS3244
VS3244

Overview
VS3244 / VS32244 High Speed CMOS VSwitch Dual 4-Bit Bus Switches Applications •= •= 5V to 3.
3V translation in mixed-supply environment Hot-swap interface •= •= Logic replacement Bus isolation General Description The VS3244 and VS32244 are high-speed TTL–compatible dual 4-bit bus switches.
The VS3244 contains two banks of 4-bit switches, with one common active low enable (/G) per bank.
The low ON resistance of the VS3244 allows inputs to be connected to outputs, without adding propagation delay and without generating additional signal noise.
The VS32244 has 25Ω resistors in series with the switches to reduce ground-bounce noise and signal reflection.
The VS3244 and VS32244 bus switches are function and pinout compatible with QS3244 and CBT3244 switches.
They 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 VS3244 and VS32244 ideal interface elements for hot-swap applications.
Features •= •= •= •= Enhanced N-FET with no DC path to VCC or GND in normal operating signal voltage range.
Low impedance bidirectional data flow: 5Ω (VS3244) and 25Ω (VS32244) Pin-compatible with QS3244 and CBT3244 switches.
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- Available in 150-mil wide QSOP package Figure 1.
Functional Block Diagram Figure 2.
Pin Configuration (All Pins Top View) QSOP /1G 1A1 1A2 1A3 1A4 1B1 1B2 1B3 1B4 /2G 2A1 2A2 2A3 2A4 2B1 2B2 2B3 2B4 /1G 1A1 2B4 1A2 2B3 1A3 2B2 1A4 2B1 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC /2G 1B1 2A4 1B2 2A3 1B3 2A2 1B4 2A1 A0 2001-04-12 Vaishali Semiconductor Page 1 www.
vishali.
com 747 Camden Avenue, Suite C Campbell CA 95008 MDSS-0008-02 Ph.
408.
377.
6060 Fax 408.
377.
6063 VS3244/VS32244 Table 1.
Pin ...


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