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PDF VS3V125QX Data sheet ( Hoja de datos )
| Número de pieza | VS3V125QX | |
| Descripción | 3.3V Quad Bus Switch with Individual Active Low Enables | |
| Fabricantes | Vaishali Semiconductor | |
| Logotipo |  |
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VS3V125
3.3V Quad Bus Switch with
Individual Active Low Enables
Applications
•= 3.3v to 2.5V translation
•= 2.5V to 1.8V translation
•= Hot Swapping
•= Bus switching
•= Clock gating
•= Logic replacement
General Description
The VS3V125 contains a set of four high-speed, low-resistance bus switches. Each bus switch is individually
controlled by LVTTL-compatible, active-low control input (/xOE). The low ON resistance of VS3V125 allows
inputs to be connected to outputs without adding propagation delay and without generating additional signal
noise.
The VS3V125 is designed for 3.3V to 2.5V, or 2.5V to 1.8V level translation, without any external
components. 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
•= Enhanced N-FET with no dc path to VCC or
GND in normal operating signal voltage range.
•= Low impedance bidirectional data flow
•= Pin-compatible with CBTLV3215 switch
•= Zero added ground bounce or signal noise
•= LVTTL-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
Figure 1. Functional Block Diagram
1A 2A 3A 4A
/1OE
/2OE
/3OE
/4OE
1Y 2Y 3Y 4Y
Figure 2. Pin Configuration
QSOP
NC
/1OE
1A
1Y
/2OE
2A
2Y
GND
1
2
3
4
5
6
7
8
16 VCC
15 /4OE
14 4A
13 4Y
12 /3OE
11 3A
10 3Y
9 NC
All Pins, Top View
NC= No Connect
2001-04-12
Page 1
MDSS-0002-02
www.vaishali.com
Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063
1 page  
VS3V125
Table 8. Switching Characteristics Over Operating Range – 3.3V Supply Voltage
TA = -40oC to +85oC, VCC = 3.3V + 5%
CLOAD = 30pF, RLOAD = 500Ω unless otherwise stated.
Symbol
Description (1)
Min(3)
Max Units
tPLH, tPHL
Data Propagation Delay (2,3) through the switch
-
0.25 ns
tPZH, tPZL
tPLZ, tPHZ
Switch Turn-on Delay, /xOE to xA or xY
Switch Turn-off Delay (3), /xOE to xA or xY
1.5 6.5 ns
1.5 5.5 ns
Table 9. Switching Characteristics Over Operating Range – 2.5V Supply Voltage
TA = -40oC to +85oC, VCC = 2.5V + 0.2V
CLOAD = 30pF, RLOAD = 500Ω unless otherwise stated.
Symbol
Description (1)
Min(3)
Max Units
tPLH, tPHL
Data Propagation Delay (2,3) through the switch
ns
tPZH, tPZL Switch Turn-on Delay, , /xOE to xA or xY
ns
tPLZ, tPHZ
Switch Turn-off Delay (3), /xOE to xA or xY
ns
Notes:
1. See test circuits and waveforms.
2. This parameter is the calculated theoretical RC time constant of ON-state resistance of the switch and the
specified load capacitance when driven by an ideal voltage source (zero source impedance). This time-constant is
of the order of 0.25ns for VS3V125. Since this time-constant is much smaller than rise/fall times of typical driving
signals, it adds very little propagation delay to the system.
3. This parameter is guaranteed, but not production tested.
Figure 5. AC Test Circuit and Switching Waveforms
AC Test Circuit - 3.3V Supply Voltage
S1
5V
Pulse
Generator
VIN VOUT
DUT
50Ω
CL
500Ω
450Ω
RL
50Ω=Coax to
Oscilloscope
Load Switch Position
TEST
tPLH, tPHL
tPLZ, tPZL
tPHZ, tPZH
S1
Open
Closed
Open
Input Conditions
1. Input voltage = 0 V to 3.0 V
2. tr = tf = 2.5ns (10% to 90%)
2001-04-12
Page 5
MDSS-0002-002
www.vaishali.com
Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet VS3V125QX.PDF ] | |
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