鈩?/div>
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
DESCRIPTION:
APPLICATIONS:
鈥?3.3V to 2.5V voltage translation
鈥?2.5V to 1.8V voltage translation
鈥?PCI bus isolation hot swap
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 V
CC
is less than
5鈩?typical, providing near zero propagation delay through the switch.
Absence of DC path from switch I/O pins to V
CC
or ground makes QS3V245
an ideal device for hot swapping applications.
The QS3V245 is characterized for operation from -40擄C to +85擄C.
FUNCTIONAL BLOCK DIAGRAM
2
A0
3
A1
4
A2
5
A3
6
A4
7
A5
8
A6
9
A7
OE
19
B0
18
B1
17
B2
16
B3
15
B4
14
B5
13
B6
12
B7
11
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c
2000 Integrated Device Technology, Inc.
NOVEMBER 2000
DSC-5512/1
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