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VS3345Q Datasheet

  • VS3345Q

  • High Speed CMOS VSwitch 8-Bit Bus Switches with Active High ...

  • 6頁

  • VAISH

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VS3345 / VS32345
High Speed CMOS VSwitch
8-Bit Bus Switches with
Active High & Low Enables
Applications
鈥?
鈥?
5V to 3.3V translation in mixed-supply environment
Hot-swap interface
鈥?
鈥?
Logic replacement
Bus isolation
General Description
The VS3345 and VS32345 are high-speed TTL鈥揷ompatible 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鈩?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 鈥榙isable鈥?mode makes VS3345 and VS32345 ideal interface
elements for hot-swap applications.
Features
鈥?
Enhanced N-FET with no DC path to V
CC
or GND in normal operating signal voltage
range.
Low impedance bidirectional data flow:
5鈩?(VS3345) and 25鈩?(VS32345)
Near-zero propagation delay
Zero added ground bounce or signal noise
鈥?
鈥?
鈥?
鈥?
鈥?
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
鈥?
鈥?
鈥?
Figure 1. Functional Block Diagram
Figure 2. Pin Configuration
(All Pins Top View)
QSOP
A0
A1
A2
A3
A4
A5
A6
A7
OE
A0
A1
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
/OE
B0
B1
B2
B3
B4
B5
B6
B7
OE
/OE
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
GND
2001-04-12
Vaishali Semiconductor
Page 1
www.vaishali.com
747 Camden Avenue, Suite C Campbell CA 95008
MDSS-0010-01
Ph. 408.377.6060
Fax 408.377.6063

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