VS3125
Quad Bus Switch with
Individual Active Low Enables
Applications
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5v to 3.3V translation in mixed supply environment
Hot Swap interface
Video, audio switching
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Clock gating
Logic replacement
General Description
The VS3125 contains a set of four high-speed, low-resistance bus switches. Each bus switch is individually
controlled by TTL-compatible, active-low control input (/xOE). The low ON resistance of VS3125 allows
inputs to be connected to outputs without adding propagation delay and without generating additional signal
noise.
The VS3125 is function and pinout compatible with QS3125. It enables 5V to 3.3V level translation when
used with an external diode in the power supply line. In addition, the high off-isolation between switch
terminals in the ‘disable’ mode, and the near-zero propagation delay in the ‘on’ state make the VS3V125 an
ideal interface element for hot-swapping applications.
Features
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Enhanced N-FET with no dc path to V
CC
or
GND in normal operating signal voltage range.
Low impedance bidirectional data flow
Pin-compatible with QS3125 & PI5C3125
switches
Zero added ground bounce or signal noise
TTL-compatible control signals
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Near-zero propagation delay
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
Figure 1. Functional Block Diagram
Figure 2. Pin Configuration
1A
/1OE
/2OE
/3OE
/4OE
1Y
2A
3A
4A
QSOP
NC
/1OE
1A
1Y
/2OE
2A
2Y
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
/4OE
4A
4Y
/3OE
3A
3Y
NC
2Y
3Y
4Y
All Pins, Top View
NC= No Connect
2001-04-12
Vaishali Semiconductor
Page 1
www.vaishali.com
747 Camden Avenue, Suite C Campbell CA 95008
MDSS-0011-01
Ph. 408.377.6060
Fax 408.377.6063
VAISH [ VAISHALI SEMICONDUCTOR ]
