Enhanced N channel FET with no inherent diode to Vcc
5Ω bidirectional switches connect inputs to outputs
Ω
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:
APPLICATIONS:
•
•
•
•
Video, audio, graphics switching, muxing
Hot-swapping, hot-docking
Voltage translation (5V to 3.3V)
Bus funneling
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 -40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
TEST
1
SEL
1
n = 1 through 8
nB
2
nA
nB
1
ONE O F EIG HT CHAN NELS
TEST
2
SEL
2
n = 9 through 16
nB
2
nA
nB
1
ONE O F EIG HT CHAN NELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c
2001 Integrated Device Technology, Inc.
NOVEMBER 2001
DSC-5566/2
IDTQS316233
HIGH-SPEED CMOS QUICKSWITCH 32:16 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
1
A
2
B
1
2
B
2
3
A
4
B
1
4
B
2
5
A
6
B
1
6
B
2
7
A
8
B
1
8
B
2
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
Description
Supply Voltage to Ground
DC Switch Voltage V
S
DC Input Voltage V
IN
AC Input Voltage (pulse width
≤20ns)
DC Output Current
Maximum Power
Dissipation (T
A
= 85°C)
T
STG
Storage Temperature
SSOP
TSSOP
Max
–0.5 to +7
–0.5 to +7
–0.5 to +7
–3
120
0.93
0.77
–65 to +150
°C
Unit
V
V
V
V
mA
W
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1
B
1
1
B
2
2
A
3
B
1
3
B
2
4
A
5
B
1
5
B
2
6
A
7
B
1
7
B
2
8
A
V
TERM
(2)
V
TERM
(3)
V
TERM
(3)
V
AC
I
OUT
P
MAX
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
.
CAPACITANCE
(T
A
= +25°C, f = 1MHz, V
IN
= 0V, V
OUT
= 0V)
Pins
Control Inputs
Quickswitch Channels
(Switch OFF)
Mux
Demux
Typ.
5
8.5
6
Max.
(1)
5.5
10
7
Unit
pF
pF
GND
Vcc
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
16
B
2
GND
Vcc
9
B
1
9
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
NOTE:
1. This parameter is guaranteed but not production tested.
PIN DESCRIPTION
Pin Names
xA
xB
1
, xB
2
SEL
1
, SEL
2
TEST
1
, TEST
2
I/O
I/O
I/O
I
I
Bus A
Bus B
Data Select
Port Select
Description
FUNCTION TABLES
(1)
n = 1 through 8
SEL
1
L
H
X
TEST
1
L
L
H
TEST
2
L
L
H
xA
xB
1
xB
2
xB
1
, xB
2
xA
xB
1
xB
2
xB
1
, xB
2
Function
xA to xB
1
xA to xB
2
xA to xB
1
and xB
2
Function
xA to xB
1
xA to xB
2
xA to xB
1
and xB
2
TEST
1
TEST
2
SEL
1
SEL
2
n = 9 through 16
SEL
2
L
H
X
SSOP/ TSSOP
TOP VIEW
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
2
IDTQS316233
HIGH-SPEED CMOS QUICKSWITCH 32:16 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= –40°C to +85°C, V
CC
= 5V ± 10%
Symbol
V
IH
V
IL
I
IN
I
OZ
R
ON
V
P
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Leakage Current (Control Inputs)
Off-State Current (Hi-Z)
Switch ON Resistance
Pass Voltage
(2)
Test Conditions
Guaranteed Logic HIGH for Control Inputs
Guaranteed Logic LOW for Control Inputs
0V
≤
V
IN
≤
V
CC
0V
≤
V
OUT
≤
V
CC
V
CC
= Min., V
IN
= 0V, I
ON
= 30mA
V
CC
= Min., V
IN
= 2.4V, I
ON
= 15mA
V
IN
= V
CC
= 5V, I
OUT
= -5µA
Min.
2
—
—
—
—
—
3.7
Typ.
(1)
Max.
—
—
—
—
5
10
4
—
0.8
±1
±1
7
12
4.2
V
Unit
V
V
µA
µA
Ω
NOTES:
1. Typical values are at V
CC
= 5V and T
A
= 25°C.
2. Pass voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE vs V
IN
AT V
CC
= 5V
16
R
ON
(ohms)
14
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
V
IN
(Volts)
2.0
2.5
3.0
3.5
3
IDTQS316233
HIGH-SPEED CMOS QUICKSWITCH 32:16 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
I
CCQ
∆I
CC
I
CCD
Parameter
Quiescent Power Supply Current
Power Supply Current per Control Input HIGH
(2)
Dynamic Power Supply Current per MHz
(3)
Test Conditions
(1)
V
CC
= Max., V
IN
= GND or V
CC
, f = 0
V
CC
= Max., V
IN
= 3.4V, f = 0
V
CC
= Max., A and B Pins Open, Control Inputs Toggling @ 50% Duty Cycle
Max.
3
3
0.25
Unit
µA
mA
mA/MHz
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.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
T
A
= -40°C to +85°C, V
CC
= 5V ± 10%
C
LOAD
= 50pF, R
LOAD
= 500Ω unless otherwise noted.
Symbol
t
PLH
t
PHL
t
BX
t
PZL
t
PZH
t
PLZ
t
PHZ
Parameter
Data Propagation Delay
(2)
xA to xBx, xBx to xA
Switch Multiplex Delay
SEL to xA
Switch Turn-On Delay
SEL, TEST to xBx
Switch Turn-Off Delay
(2)
SEL, TEST to xBx
Min
.
(1)
1.5
1.5
1.5
Typ.
Max.
0.25
(3)
5.3
5.2
5.3
Unit
ns
ns
ns
ns
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
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