VS3V2253QX Datasheet PDF - Vaishali Semiconductor
| Part Number | VS3V2253QX | |
| Description | High-speed 3.3V CMOS VSwitch Dual 4:1 Mux/Demux | |
| Manufacturers | Vaishali Semiconductor | |
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Advance Information
VS3V253 / VS3V2253
High-speed 3.3V CMOS VSwitch
Dual 4:1 Mux/Demux
Applications
•= 3.3V to 2.5V translation
•= 2.5V to 1.8V translation
•= Hot-Swapping
•= Logic replacement
•= Memory bank, video, and audio
switching
General Description
The VS3V253 is a high-speed LVTTL–compatible dual 4:1 multiplexer/demultiplexer. The VS3V2253
contains two mux/demux channels with common path control (S0 & S1) and individual active LOW enables
/EA and /EB. The low ON resistance of VS3V253 allows inputs to be connected to outputs without adding
propagation delay and without generating additional signal noise. The VS3V2253 has 25Ω resistors in series
with the switches to reduce ground-bounce noise and signal reflections.
The VS3V253 and VS3V2253 mux/demux switches are designed for 3.3V to 2.5V, or 2.5V to 1.8V
translation, without any external components. These switches also offer very high impedance between
switch terminals in the power off or ‘disabled’ state. This feature, combined with near-zero propagation
delay in the ‘on’ state, makes VS3V253 and VS3V2253 ideal interface elements for hot-swapping
applications.
Features
•= Enhanced N-FET with no DC path to VCC
or GND in normal operating signal voltage
range.
•= Low impedance switches connect inputs to
outputs with near-zero propagation delay:
5Ω (VS3V253) and 25Ω (VS3V2253)
•= Pin-compatible with 74LVC253 or
equivalent logic devices
•= Zero added ground bounce or signal noise
•= Break-before-make feature
•= 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
S0
S1
/EA
/EB
YA
YB
Figure 2. Pin Configuration
QSOP
/EA 1
16 VCC
S1 2
15 /EB
I3A 3
14 S0
I0A
I2A 4
13 I3B
I1A
I1A 5
12 I2B
I2A
I3A
I0B
I0A
YA
GND
6
7
8
11 I1B
10 I0B
9 YB
I1B
I2B
I3B
(All Pins Top View)
2000-11-28
Page 1
MDSS-0003-01
Vaishali Semiconductor 1300 White Oaks Road Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063
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VS3V253/VS3V2253
Advance Information
Table 8. Switching Characteristics Over Operating Range – 3.3V Supply Voltage
TA = -40oC to +85oC, VCC = 3.3V + 0.3V
CLOAD = 30pF, RLOAD = 500Ω unless otherwise stated.
Symbol
tPLH, tPHL
Description (1)
Data Propagation Delay (2,3) through the switch
VS3V253
Min(3) Max
0.25
VS3V2253
Min(3) Max
1.25
tPZH, tPZL
Switch Turn-on Delay, S0 or S1 to YX, IXX
0.5 5.2 0.5 6.2
tPZH, tPZL
Switch Turn-on Delay, /EA or /EB to YX, IXX
0.5 4.8 0.5 5.8
tPLZ, tPHZ
Switch Turn-off Delay (3), SX or /EX to YX, IXX
0.5 5.0 0.5 5.0
Units
ns
ns
ns
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
tPLH, tPHL
Description (1)
Data Propagation Delay (2,3) through the switch
VS3V253
Min(3) Max
VS3V2253
Min(3) Max
tPZH, tPZL
Switch Turn-on Delay, S to YX, I0X, or IX
tPZH, tPZL
Switch Turn-on Delay, /E to YX, I0X, or IX
tPLZ, tPHZ
Switch Turn-off Delay (3), S or /E to YX, I0X, or IX
Units
ns
ns
ns
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
on the order of 0.25 ns for VS3V253 and 1.25 ns for VS3V2253. 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 7. AC Test Circuit and Switching Waveforms
AC Test Circuit3.3V Supply Voltage
S1
5V
Pulse
Generator
VIN VOUT
DUT
50Ω
CL
500Ω
450Ω
RL
50Ω=Coax to
Oscilloscope
Switching Waveforms
Load Switch Position
TEST
tPLH, tPHL
tPLZ, tPZL
tPHZ, tPZH
S1
Open
Closed
Open
Input Conditions
Input voltage = 0 V to 3.0 V
tr = tf = 2.5ns (10% to 90%)
2000-11-28
Page 5
MDSS-0003-01
Vaishali Semiconductor 1300 White Oaks Road Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063
Preview 5 Page |
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| Information | Total 6 Pages | |
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Featured Datasheets
| Part Number | Description | MFRS |
| VS3V2253Q | The function is High-speed 3.3V CMOS VSwitch Dual 4:1 Mux/Demux. Vaishali Semiconductor | |
| VS3V2253QX | The function is High-speed 3.3V CMOS VSwitch Dual 4:1 Mux/Demux. Vaishali Semiconductor | |
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