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VS3345 Datasheet(PDF) 1 Page - Vaishali Semiconductor

Part No. VS3345
Description  High Speed CMOS VSwitch 8-Bit Bus Switches with Active High & Low Enables
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Maker  VAISH [Vaishali Semiconductor]
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VS3345 Datasheet(HTML) 1 Page - Vaishali Semiconductor

   
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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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