IDTQS34XR245 Datasheet, PDF (1/5 Pages) Integrated Device Technology – QUICKSWITCH PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 32-BIT LOW RESISTANCE MULTIWIDTHTM BUS SWITCHES

IDTQS34XR245
HIGH SPEED CMOS QUICKSWITCH 32-BIT LOW RESISTANCE BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH^ PRODUCTS
HIGH-SPEED CMOS QUICK-
SWITCH 32-BIT LOW RESISTANCE
MULTIWIDTH^TM BUS SWITCHES
IDTQS34XR245
FEATURES:
• Enhanced N channel FET with no inherent diode to Vcc
• 2.5Ω bidirectional switches connect inputs to outputs
• Zero propagation delay, zero ground bounce
• QS34XR245Q3 is a 32-bit version of QS3R245
• Flow-through pinout for easy layout
• Undershoot clamp diodes on all switch and control inputs
• TTL-compatible control inputs
• Available in 80-pin Millipaq package
APPLICATIONS:
• Low resistance applications
• Hot-swapping, hot-docking (low resistance for PCI and
Compact PCI applications)
• Bus switching, isolation
• Logic replacement (data processing)
• Capacitance reduction and isolation
• Power conservation
• Clock gating
• Voltage translation (5V to 3.3V)
FUNCTIONAL BLOCK DIAGRAM
A0
A1
A2 A3 A4 A5 A6 A7
DESCRIPTION:
The QS34XR245 is a member of the MultiWidth^TM family of QuickSwitch
devices and provides a set of 32 high-speed low resistance CMOS compatible
bus switches in a flow-through pin out.
This device is available in the MillipaQ package, the worlds first small outline
32-bit solution. The low on-resistance of the QS34XR245 allows inputs to be
connected to outputs without adding propagation delay and without generating
additional ground bounce noise. When Output Enable (OEx) is low, the switches
are turned on, connecting bus A to bus B. When OEx is high, the switches are
turned off.
The QS34XR245 is ideally suited for 32/64 bit applications where board
space is at a premium. The low resistance of QS34XR245 makes it ideal for PCI
hot docking application.
QuickSwitch devices provide an order of magnitude faster speed than
conventional logic devices.
A16 A17 A18 A19 A20 A21 A22 A23
OE1
OE3
OE2
B0 B1
B2 B3 B4 B5 B6 B7
A8
A9
A10 A11 A12 A13 A14 A15
OE4
B16 B17 B18 B19 B20 B21 B22 B23
A24 A25 A26 A27 A28 A29 A30 A31
B8
B9
B10 B11 B12 B13 B14 B15
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c 1999 Integrated Device Technology, Inc.
B24 B25 B26 B27 B28 B29 B30 B31
NOVEMBER 1999
DSC-5544/1