1
IDTQS34X2245
HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES
INDUSTRIAL TEMPERATURE RANGE
AUGUST 2012
2012 Integrated Device Technology, Inc. DSC-5556/5c
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
• Internal 25
ΩΩ
ΩΩ
Ω resistors for low noise
• 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
IDTQS34X2245
QUICKSWITCH
®
PRODUCTS
HIGH-SPEED CMOS
QUICKSWITCH 32-BIT
MULTIWIDTH™ BUS SWITCHES
DESCRIPTION:
The QS34X2245 is a member of the MultiWidth
TM
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 worlds first small outline 32-bit solution. The low ON-resistance of the
QS34X2245 allows inputs to be connected to outputs without adding
propagation delay and without generating additional ground bounce noise.
Internal 25Ω resistors reduce reflection noise in high-speed applications.
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 QS34X2245 is characterized for operation at -40°C to +85°C.
B
0
OE
1
A
0
B
1
A
1
B
2
A
2
B3
A
3
B
4
A
4
B
5
A
5
B
6
A
6
B
7
A
7
B
8
OE
2
A
8
B
9
A
9
B
10
A
10
B
11
A
11
B
12
A
12
B
13
A
13
B
14
A
14
B
15
A
15
B
16
OE
3
A
16
B
17
A
17
B
18
A
18
B
19
A
19
B
20
A
20
B
21
A
21
B
22
A
22
B
23
A
23
B
24
OE
4
A
24
B
25
A
25
B
26
A
26
B
27
A
27
B
28
A
28
B
29
A
29
B
30
A
30
B
31
A
31
