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Enhanced N channel FET with no inherent diode to Vcc
Bidirectional switches connect inputs to outputs
24:6 Mux/Demux switches
Zero propagation delay, zero ground bounce
Individual controls for each bank
Undershoot clamp diodes on all switch and control pins
TTL-compatible control inputs
Available in 48-pin QVSOP Package
IDTQS33X253
DESCRIPTION:
The QS33X253 is a high-speed CMOS 24:6 (3, dual 4:1) multiplexer/
demultiplexer. The QS33X253 is a member of the MultiWidth鈩?family and
is functionally compatible to three of the QuickSwitch version of the 74F253,
74FCT253, and the 74ALS/AS/LS253 Dual 4:1 multiplexers. The low ON
resistance of the QS33X253 allows inputs to be connected to outputs without
adding propagation delay and without generating additional ground bounce
noise. TTL-compatible control circuitry with "Break-before-make" feature
avoids bus contention on the demux side. This part is ideal for video
switching and four way memory bank interleaving applications.
Mux/Demux devices provide an order of magnitude faster speed than
equivalent logic devices.
The QS33X253 is characterized for operation at -40擄C to +85擄C.
APPLICATIONS
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Logic replacment
Video, audio, graphics switching, muxing
Hot-swapping, hot-docking
Voltage translation (5V to 3.3V)
FUNCTIONAL BLOCK DIAGRAM
S0
S1
AB
S0
S1
CD
AB
CD
EA
EB
EC
ED
I0
A
I1
A
Y
A
I2
A
I3
A
I0
B
Y
B
I1
B
I2
B
I3
B
Y
D
Y
C
I0
C
I1
C
I2
C
I3
C
I0
D
I1
D
I2
D
I3
D
S0
S1
EF
EF
EE
EF
I0
E
I1
E
Y
E
I2
E
I3
E
I0
F
Y
F
I1
F
I2
F
I3
F
INDUSTRIAL TEMPERATURE RANGE
1
c
1999
Integrated Device Technology, Inc.
JANUARY 2000
DSC-5761/-
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