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Vaishali Semiconductor
Vaishali Semiconductor

VS32345Q Datasheet Preview

VS32345Q Datasheet

High Speed CMOS VSwitch 8-Bit Bus Switches with Active High & Low Enables

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VS32345Q pdf
VS3345 / VS32345
High Speed CMOS VSwitch
8-Bit Bus Switches with
Active High & Low Enables
Applications
= 5V to 3.3V translation in mixed-supply environment
= Hot-swap interface
= Logic replacement
= Bus isolation
General Description
The VS3345 and VS32345 are high-speed TTL–compatible 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 25resistors 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 ‘disable’ mode makes VS3345 and VS32345 ideal interface
elements for hot-swap applications.
Features
= Enhanced N-FET with no DC path to VCC
or GND in normal operating signal voltage
range.
= Low impedance bidirectional data flow:
5(VS3345) and 25(VS32345)
= Near-zero propagation delay
= Zero added ground bounce or signal noise
= 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
Figure 1. Functional Block Diagram
Figure 2. Pin Configuration
(All Pins Top View)
OE
/OE
A0 A1 A2 A3 A4 A5 A6 A7
B0 B1 B2 B3 B4 B5 B6 B7
QSOP
OE
A0
A1
A2
A3
A4
A5
A6
A7
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
19 /OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
2001-04-12
Page 1
MDSS-0010-01
www.vaishali.com
Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063



Vaishali Semiconductor
Vaishali Semiconductor

VS32345Q Datasheet Preview

VS32345Q Datasheet

High Speed CMOS VSwitch 8-Bit Bus Switches with Active High & Low Enables

No Preview Available !

VS32345Q pdf
VS3345/VS32345
Table 1. Pin Description
Name
A0 - A7
/OE
OE
B0 – B7
I/O
I/O
I
I
I/O
Description
Data Input or Output
Active Low Enable Input
Active High Enable Input
Data Output or Input
Table 2. Function Table
Input
/OE OE
Path
H X Hi Impedance
X L Hi Impedance
L H An <-> Bn
Note: X = Don’t care
Function
Disable all switches
Disable all switches
An = Bn
Table 3. Absolute Maximum Ratings
Supply Voltage to Ground………………………….…..-0.5V to +7.0V
DC Switch Voltage VS……………………….………….-0.5V to +7.0V
DC Input Voltage VIN………………………………… ...-0.5V to +7.0V
AC Input Voltage (Pulse Width < 20ns)……………….…………-3.0V
DC Output Sink Current per Switch Pin…………………...…..120 mA
Maximum Power Dissipation…………………………….…..0.5 Watts
Storage Temperature………………………………...-65oC to +150oC
Note: ABSOLUTE MAXIMUM CONTINUOUS RATINGS are those values beyond which damage to the device
may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect
device reliability. Correct functional operation whiled operating in the absolute maximum rated conditions
is not implied.
Table 4. Capacitance
TA = 25oC, f = 1 MHz, VIN = 0V, VOUT = 0V
QSOP
Pins
Typ Max
Unit
Control Inputs
45
VSwitch Channels 5 7
(Switch OFF)
pF
pF
Note: Capacitance is guaranteed, but not production tested. Total capacitance of a path, when the switch is
closed, is the sum of the switch terminal capacitances.
2001-04-12
Page 2
MDSS-0010-01
www.vaishali.com
Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063


Part Number VS32345Q
Description High Speed CMOS VSwitch 8-Bit Bus Switches with Active High & Low Enables
Maker Vaishali Semiconductor
Total Page 6 Pages
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