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IDTQS34X245
HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES INDUSTRIAL TEMPERATURE RANGE
APRIL 2000
2000 Integrated Device Technology, Inc. DSC-5481/3c
INDUSTRIAL TEMPERATURE RANGE
FUNCTIONAL BLOCK DIAGRAM
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FEATURES:
• Enhanced N channel FET with no inherent diode to Vcc
• Bidirectional switches connect inputs to outputs
• Zero propagation delay, zero ground bounce
• QS34X245 is 32-bit version of QS3245
• 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:
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Bus switching and isolation
• Power conservation
• Logic replacement (data processing)
• Capacitance isolation
• Clock gating
IDTQS34X245QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS
QUICKSWITCH 32-BIT
MULTIWIDTH™ BUS SWITCHES
DESCRIPTION:
The QS34X245 is a member of the MultiWidthTM family of QuickSwitch
devices and provides a set of 32 high-speed CMOS compatible bus switches
in a flow-through pinout. This device is available in the MilliPaQ package,
the world's first small outline 32-bit solution. The low ON-resistance of the
QS34X245 allows inputs to be connected to outputs without adding propa-
gation delay and without generating additional ground bounce noise. When
Output Enable (OEn) is low, the switches are turned on, connecting bus A
to bus B. When OEn is high, the switches are turned off. This device is ideally
suited for 32/64 bit applications where board space is at a premium.
QuickSwitch devices provide speeds an order of magnitude faster than
conventional logic devices.
The QS34X245 is characterized for operation at -40°C to +85°C.
B0
OE1
A0
B1
A1
B2
A2
B3
A3
B4
A4
B5
A5
B6
A6
B7
A7
B8
OE2
A8
B9
A9
B10
A10
B11
A11
B12
A12
B13
A13
B14
A14
B15
A15
B16
OE3
A16
B17
A17
B18
A18
B19
A19
B20
A20
B21
A21
B22
A22
B23
A23
B24
OE4
A24
B25
A25
B26
A26
B27
A27
B28
A28
B29
A29
B30
A30
B31
A31