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PDF IDTQS3V245Q Data sheet ( Hoja de datos )

Número de pieza IDTQS3V245Q
Descripción QUICKSWITCH PRODUCTS 3.3V HIGH SPEED BUS SWITCH
Fabricantes Integrated Device 
Logotipo Integrated Device Logotipo



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IDTQS3V245
3.3V HIGH SPEED BUS SWITCH
INDUSTRIALTEMPERATURERANGE
QUICKSWITCH® PRODUCTS
3.3V HIGH SPEED BUS SWITCH
IDTQS3V245
FEATURES:
• 5bi-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 3.3V VCC is less than
5typical, providing near zero propagation delay through the switch.
Absence of DC path from switch I/O pins to VCC 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
DSC-5512/1

1 page




IDTQS3V245Q pdf
IDTQS3V245
3.3V HIGH SPEED BUS SWITCH
OUTPUT VI CHARACTERISTICS
250
200
150
100
50
0
0
0.5 1 1.5
VOUT (Volts)
Outputs Low Characteristic
2
-50
-100
-150
-200
-250
-300
INDUSTRIALTEMPERATURERANGE
VOUT (Volts)
123
4
Outputs High Characteristic
PASS VOLTAGE vs VCC
3
VOUT = 2.5V @ VCC = 3.3V
2.5 VOUT = 1.8V @ VCC = 2.5V
2
1.5
2.2 2.4 2.7 3 3.3 3.6
VCC (V)
5

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