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Vaishali Semiconductor
Vaishali Semiconductor

VS32245Q Datasheet Preview

VS32245Q Datasheet

High Speed CMOS VSwitch 8-Bit Bus Switches

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VS32245Q pdf
VS3245 / VS32245
High Speed CMOS VSwitch
8-Bit Bus Switches
Applications
= 5V to 3.3V translation in mixed-supply environment
= Hot-swap interface
= Logic replacement
= Bus isolation
General Description
The VS3245 and VS32245 are high-speed TTL–compatible 8-bit bus switches. The VS3245 contains eight
high-speed bus switches, with a common active low enable (/OE). The low ON resistance of the VS3245
allows inputs to be connected to outputs, without adding propagation delay and without generating additional
signal noise. The VS32245 has 25resistors in series with the switches to reduce ground-bounce noise and
signal reflection.
The VS3245 and VS32245 bus switches are function and pinout compatible with QS3245 and CBT3245
switches. They 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 VS3245 and VS32245 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(VS3245) and 25(VS32245)
= Pin-compatible with QS3245 and CBT3245
switches.
= 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)
A0 A1 A2 A3 A4 A5 A6 A7
QSOP
/OE
B0 B1 B2 B3 B4 B5 B6 B7
NC
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-0007-02
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

VS32245Q Datasheet Preview

VS32245Q Datasheet

High Speed CMOS VSwitch 8-Bit Bus Switches

No Preview Available !

VS32245Q pdf
VS3245/VS32245
Table 1. Pin Description
Name
A0 - A7
/OE
B0 – B7
I/O
I/O
I
I/O
Description
Data Input or Output
Enable Input
Data Output or Input
Table 2. Function Table
Input
/OE
Path
H Hi Impedance
L An <-> Bn
Function
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 while 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
pF
pF
(Switch OFF)
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-0007-02
www.vaishali.com
Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063


Part Number VS32245Q
Description High Speed CMOS VSwitch 8-Bit Bus Switches
Maker Vaishali Semiconductor
Total Page 6 Pages
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