VS3V253 Datasheet, PDF (1/6 Pages) Vaishali Semiconductor – High-speed 3.3V CMOS VSwitch Dual 4:1 Mux/Demux

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
/E_A and /E_B. 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
/E _A
/E _B
Y_A
Y_B
Figure 2. Pin Configuration
QSOP
/E_A 1
16 VCC
S1 ₂
15 /E_B
I3_{A 3}
14 S0
I0_A
I2_A 4
13 I3_B
I1_A
I1_{A 5}
12 I2_B
I2_A
I3_A
I0_B
I0_A 6
Y_A 7
GND 8
11 I1_B
10 I0B
9 Y_B
I1_B
I2_B
I3_B
(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 [phone]