QS34XV245 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – 3.3V HIGH SPEED 32-BIT MULTIWIDTH BUS SWITCH

IDTQS34XV245
3.3V HIGH SPEED 32-BIT MULTIWIDTH BUS SWITCH
QUICKSWITCH^® PRODUCTS
3.3V HIGH SPEED 32-BIT
MULTIWIDTH™ BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
IDTQS34XV245
FEATURES:
• 5Ω bidirectional 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 80-pin QVSOP package
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 QS34XV245 is a set of 32-bit high speed bus switches 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 QS34XV245 is specially designed for direct interface betweeen 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 5Ω typical,
providing near zero propagation delay through the switch. Absence of DC path
from switch I/O pins to VCC or ground makes QS34XV245 an ideal device for
hot swapping applications.
The QS34XV245 is characterized for operation from -40°C to +85°C.
OE1
OE2
A0 A1 A2 A3 A4 A5 A6 A7
OE3
B0 B1 B2 B3 B4 B5 B6 B7
A8 A9 A10 A11 A12 A13 A14 A15
B8 B9 B10 B11 B12 B13 B14 B15
OE4
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c 1999 Integrated Device Technology, Inc.
A16 A17 A18 A19 A20 A21 A22 A23
B16 B17 B18 B19 B20 B21 B22 B23
A24 A25 A26 A27 A28 A29 A30 A31
B24 B25 B26 B27 B28 B29 B30 B31
NOVEMBER 1999
DSC-5580/1