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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
IDTQS33X2253
DESCRIPTION:
The QS33X2253 is a high-speed CMOS 24:6 (3, dual 4:1) multiplexer/
demultiplexer. The QS33X2253 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 QS33X2253 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. The
QS33X2253 has 25鈩?series resistors to reduce ground bounce noise.
Mux/Demux devices provide an order of magnitude faster speed than
equivalent logic devices.
The QS33X2253 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-5760/-
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