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IDTQS3V245 Datasheet

3.3V HIGH SPEED BUS SWITCH

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IDTQS3V245
3.3V HIGH SPEED BUS SWITCH
INDUSTRIALTEMPERATURERANGE
QUICKSWITCH® PRODUCTS
3.3V HIGH SPEED BUS SWITCH
IDTQS3V245
FEATURES:
•5 bi-directional switches connect inputs to outputs
• Pin compatibility with QS3245
• 250ps propagation delay
• Undershoot Clamp Diodes on all switch and control Inputs
• LVTTL-compatible control Inputs
• Available in SOIC and QSOP packages
APPLICATIONS:
• 3.3V to 2.5V voltage translation
• 2.5V to 1.8V voltage translation
• PCI bus isolation hot swap
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION:
The QS3V245 is an 8-bit high speed bus switch controlled by LVTTL-
compatible active low enable signal. When closed, the switches exhibit near
zero propagation delay without generating additional ground bounce or
switching noise.
The QS3V245 is specially designed for direct interface between 3.3V and
2.5V devices without any external components. When operating from a 3.3V
supply, the logic high level at the switch output is clamped to 2.5V when the
switch input signal exceeds 2.5V. This device can be used for switching 2.5V
buses without signal attenuation. The ON resistance at 3.3VCCV is less than
5typical, providing near zero propagation delay through the switch.
Absence of DC path from switch I/O pins toCCV or ground makes QS3V245
an ideal device for hot swapping applications.
The QS3V245 is characterized for operation from -40°C to +85°C.
2 3 4 5 6 7 89
A0 A1 A2 A3 A4 A5 A6 A7
19
OE
B0 B1 B2 B3 B4 B5 B6 B7
18 17 16 15 14 13 12 11
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
c 2000 Integrated Device Technology, Inc.
1
NOVEMBER 2000
http://www.Datasheet4U.com
DSC-5512/1


Integrated Device Technology Electronic Components Datasheet

IDTQS3V245 Datasheet

3.3V HIGH SPEED BUS SWITCH

No Preview Available !

IDTQS3V245
3.3V HIGH SPEED BUS SWITCH
PIN CONFIGURATION
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
SOIC/ QSOP
TOP VIEW
INDUSTRIALTEMPERATURERANGE
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
Max
VTERM(2) Supply Voltage to Ground
–0.5 to +4.6
VS DC Switch Voltage
–0.5 to +4.6
VIN DC Input Voltage
–0.5 to +4.6
VAC AC Input Voltage (pulse width 20ns)
–3
IOUT DC Output Current (max. sink current/pin)
120
Maximum Power Dissipation
0.5
TSTG Storage Temperature
–65 to +150
Unit
V
V
V
V
mA
W
°C
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
2. VCC terminals.
CAPACITANCE (TA = +25°C, f = 1MHz, VIN = 0V, VOUT = 0V)
Symbol
Parameter(1)
Typ. Max. Unit
CIN Control Inputs
4 6 pF
CI/O Quickswitch Channels (Switch OFF) 5 7 pF
NOTE:
1. As applicable to the device type.
PIN DESCRIPTION
Pin Names
Description
OE Output Enable
A x Data I/Os
B x Data I/Os
FUNCTION TABLE(1)
OE
H
L
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Outputs
Disconnected
Ax = Bx
2


Part Number IDTQS3V245
Description 3.3V HIGH SPEED BUS SWITCH
Maker Integrated Device
Total Page 7 Pages
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