1
IDTQS316233
HIGH-SPEED CMOS QUICKSWITCH 32:16 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
NOVEMBER 2001
2001 Integrated Device Technology, Inc.
DSC-5566/2
c
INDUSTRIAL TEMPERATURE RANGE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
APPLICATIONS:
Video, audio, graphics switching, muxing
Hot-swapping, hot-docking
Voltage translation (5V to 3.3V)
Bus funneling
FUNCTIONAL BLOCK DIAGRAM
IDTQS316233
QUICKSWITCH
PRODUCTS
HIGH-SPEED CMOS
QUICKSWITCH 32:16 MUX/DEMUX
FEATURES:
Enhanced N channel FET with no inherent diode to Vcc
5
bidirectional switches connect inputs to outputs
Zero propagation delay, zero ground bounce
TTL-compatible input and output levels
Undershoot clamp diodes on all switch and control inputs
Available in SSOP and TSSOP packages
DESCRIPTION:
The QS316233 is a 32-bit to 16-bit high-speed CMOS, TTL-compatible
switch which can multiplex or demultiplex data. It can be used for memory
interleaving where two memory banks need to be addressed simulta-
neously. It can also be used as two 16-bit to 8-bit multiplexers or as one
32-bit to 16-bit multiplexer. SELn inputs control the data flow. TESTn inputs
control either one or two ports connection.
Mux/Demux devices provide an order of magnitude faster speed than
equivalent logic devices.
The QS316233 is characterized for operation at -40C to +85C.
TEST
1
SEL
1
nA
ONE O F EIG HT CHAN NELS
nB
2
nB
1
n = 1 through 8
TEST
2
SEL
2
nA
ONE O F EIG HT CHAN NELS
nB
2
nB
1
n = 9 through 16
2
INDUSTRIAL TEMPERATURE RANGE
IDTQS316233
HIGH-SPEED CMOS QUICKSWITCH 32:16 MUX/DEMUX
PIN CONFIGURATION
SSOP/ TSSOP
TOP VIEW
Pins
Typ.
Max.
(1)
Unit
Control Inputs
5
5.5
pF
Quickswitch Channels
Mux
8.5
10
pF
(Switch OFF)
Demux
6
7
CAPACITANCE
(T
A
= +25C, f = 1MHz, V
IN
= 0V, V
OUT
= 0V)
NOTE:
1. This parameter is guaranteed but not production tested.
Symbol
Description
Max
Unit
V
TERM
(2)
Supply Voltage to Ground
0.5 to +7
V
V
TERM
(3)
DC Switch Voltage V
S
0.5 to +7
V
V
TERM
(3)
DC Input Voltage V
IN
0.5 to +7
V
V
AC
AC Input Voltage (pulse width
20ns)
3
V
I
OUT
DC Output Current
120
mA
P
MAX
Maximum Power
SSOP
0.93
W
Dissipation (T
A
= 85C)
TSSOP
0.77
T
STG
Storage Temperature
65 to +150
C
ABSOLUTE MAXIMUM RATINGS
(1)
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
2. V
CC
terminals.
3. All terminals except V
CC
.
Pin Names
I/O
Description
x A
I/O
Bus A
xB
1
, xB
2
I/O
Bus B
SEL
1
, SEL
2
I
Data Select
TEST
1
, TEST
2
I
Port Select
PIN DESCRIPTION
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
FUNCTION TABLES
(1)
n = 1 through 8
SEL
1
TEST
1
xA
Function
L
L
xB
1
xA to xB
1
H
L
xB
2
xA to xB
2
X
H
xB
1
, xB
2
xA to xB
1
and xB
2
n = 9 through 16
SEL
2
TEST
2
xA
Function
L
L
xB
1
xA to xB
1
H
L
xB
2
xA to xB
2
X
H
xB
1
, xB
2
xA to xB
1
and xB
2
GND
56
1
1
A
1
B
1
55
2
2
B
1
1
B
2
54
3
2
B
2
2
A
47
37
38
39
40
41
42
43
44
45
46
33
34
35
36
49
50
51
52
53
48
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
11
21
22
23
24
29
30
31
32
25
26
27
28
3
A
TEST
1
Vcc
TEST
2
SEL
1
SEL
2
GND
Vcc
4
B
1
4
B
2
5
A
6
B
1
6
B
2
7
A
8
B
1
9
A
10
B
1
10
B
2
11
A
12
B
1
12
B
2
13
A
14
B
1
14
B
2
15
A
16
B
1
8
B
2
16
B
2
10
A
11
B
1
11
B
2
12
A
13
B
1
13
B
2
14
A
15
B
1
15
B
2
16
A
9
B
1
9
B
2
3
B
1
3
B
2
4
A
5
B
1
5
B
2
6
A
7
B
1
7
B
2
8
A
3
IDTQS316233
HIGH-SPEED CMOS QUICKSWITCH 32:16 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
Symbol
Parameter
Test Conditions
Min.
Typ.
(1)
Max.
Unit
V
IH
Input HIGH Voltage
Guaranteed Logic HIGH for Control Inputs
2
--
--
V
V
IL
Input LOW Voltage
Guaranteed Logic LOW for Control Inputs
--
--
0.8
V
I
IN
Input Leakage Current (Control Inputs)
0V
V
IN
V
CC
--
--
1
A
I
OZ
Off-State Current (Hi-Z)
0V
V
OUT
V
CC
--
--
1
A
R
ON
Switch ON Resistance
V
CC
= Min., V
IN
= 0V, I
ON
= 30mA
--
5
7
V
CC
= Min., V
IN
= 2.4V, I
ON
= 15mA
--
10
12
V
P
Pass Voltage
(2)
V
IN
= V
CC
= 5V, I
OUT
= -5
A
3.7
4
4.2
V
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= 40C to +85C, V
CC
= 5V 10%
NOTES:
1. Typical values are at V
CC
= 5V and T
A
= 25C.
2. Pass voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE vs V
IN
AT V
CC
= 5V
R
ON
(ohms)
V
IN
(Volts)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
2
4
6
8
10
12
14
16
4
INDUSTRIAL TEMPERATURE RANGE
IDTQS316233
HIGH-SPEED CMOS QUICKSWITCH 32:16 MUX/DEMUX
NOTES:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. Per TTL-driven input (V
IN
= 3.4V). A and B pins do not contribute to
Icc.
3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant
AC or DC currents as they transition. This parameter is guaranteed but not production tested.
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions
(1)
Max.
Unit
I
CCQ
Quiescent Power Supply Current
V
CC
= Max., V
IN
= GND or V
CC
, f = 0
3
A
I
CC
Power Supply Current per Control Input HIGH
(2)
V
CC
= Max., V
IN
= 3.4V, f = 0
3
mA
I
CCD
Dynamic Power Supply Current per MHz
(3)
V
CC
= Max., A and B Pins Open, Control Inputs Toggling @ 50% Duty Cycle
0.25
mA/MHz
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
T
A
= -40C to +85C, V
CC
= 5V 10%
C
LOAD
= 50pF, R
LOAD
= 500
unless otherwise noted.
Symbol
Parameter
Min
.
(1)
Typ.
Max.
Unit
t
PLH
Data Propagation Delay
(2)
0.25
(3)
ns
t
PHL
xA to xBx, xBx to xA
t
BX
Switch Multiplex Delay
1.5
5.3
ns
SEL to xA
t
PZL
Switch Turn-On Delay
1.5
5.2
ns
t
PZH
SEL, TEST to xBx
t
PLZ
Switch Turn-Off Delay
(2)
1.5
5.3
ns
t
PHZ
SEL, TEST to xBx
NOTES:
1. Minimums are guaranteed but not production tested.
2. This parameter is guaranteed but not production tested.
3. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone
is of the order of 0.25ns at C
L
= 50pF. Since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the
system. Propagation delay of the bus switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on
the driven side.
5
IDTQS316233
HIGH-SPEED CMOS QUICKSWITCH 32:16 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
CORPORATE HEADQUARTERS
for SALES:
for Tech Support:
2975 Stender Way
800-345-7015 or 408-727-6116
logichelp@idt.com
Santa Clara, CA 95054
fax: 408-492-8674
(408) 654-6459
www.idt.com
IDTQS
XXXXX
XX
Package
Device Type
Blank
Industrial (-40C to +85C)
Shrink Small Outline Package
Thin Shrink Small Outline Package
PV
PA
316233
High Speed CMOS QuickSwitch 32:16 Mux/Demux
X
Process
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