IDTQS34X245
HIGH-SPEEDCMOSQUICKSWITCH32-BITMULTIWIDTHBUSSWITCHES
INDUSTRIALTEMPERATURERANGE
QUICKSWITCH® PRODUCTS
IDTQS34X245
HIGH-SPEED CMOS
QUICKSWITCH 32-BIT
MULTIWIDTH™ BUS SWITCHES
DESCRIPTION:
FEATURES:
The QS34X245 is a member of the MultiWidthTM family of QuickSwitch
devicesandprovidesasetof32high-speedCMOScompatiblebusswitches
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
QS34X245allowsinputstobeconnectedtooutputswithoutaddingpropa-
gationdelayandwithoutgeneratingadditionalgroundbouncenoise. When
Output Enable (OEn) is low, the switches are turned on, connecting bus A
tobusB. WhenOEnishigh,theswitchesareturnedoff.Thisdeviceisideally
suited for 32/64 bit applications where board space is at a premium.
QuickSwitch devices provide speeds an order of magnitude faster than
conventionallogicdevices.
• 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
The QS34X245 is characterized for operation at -40°C to +85°C.
• Logic replacement (data processing)
• Capacitance isolation
• Clock gating
FUNCTIONALBLOCKDIAGRAM
A7
A0
A1 A2 A3
A4
A5 A6
A23
A16 A17 A18 A19 A20 A21 A22
OE3
OE1
B2 B3
B1
B4
B5 B6 B7
B16 B17 B18 B19 B20 B21 B22 B23
A24 A25 A26 A27 A28 A29 A30 A31
B0
A8
A12
A9 A10 A11
A13 A14
A15
OE4
OE2
B8
B9 B10
B11 B12
B13 B14 B15
B24 B25 B26 B27 B28 B29 B30 B31
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
APRIL 2000
1
c
2000 Integrated Device Technology, Inc.
DSC-5481/3