Enhanced N channel FET with no inherent diode to Vcc
16:8 multiplexer function with zero delay
5Ω bidirectional switches connect inputs to outputs
Ω
Zero propagation delay, zero ground bounce
Undershoot clamp diodes on all switch and control inputs
Direct bidirectional connection for mux, demux
25Ω resistors for low noise
Ω
Available in QSOP package
DESCRIPTION:
The QS32390 provides a 16:8 multiplexer logic switch. The QS32390 has
an internal 25Ω resistor to reduce reflection noise in high-speed applica-
tions. The enable inputs connect one of two inputs to the common I/O pin,
respectively. The multiplexer function can be used to select and route logic
signals for zero delay, isolate bus capacitance, form crossbar switches, etc.
Mux/Demux devices provide an order of magnitude faster speed than
equivalent logic devices.
The QS32390 is characterized for operation at -40°C to +85°C.
APPLICATIONS:
• Video, audio, graphics switching, muxing
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
FUNCTIONAL BLOCK DIAGRAM
A
0
AB
0
A
7
AB
7
AEN
B
0
B
7
BEN
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c
2002 Integrated Device Technology, Inc.
MARCH 2002
DSC-5752/3
IDTQS32390
HIGH-SPEED CMOS QUICKSWITCH 16:8 MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
A
0
B
0
AB
0
A
1
B
1
AB
1
A
2
B
2
AB
2
A
3
B
3
AB
3
AEN
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
A
7
B
7
AB
7
A
6
B
6
AB
6
A
5
B
5
AB
5
A
4
B
4
AB
4
BEN
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
TERM
(2)
V
TERM
(3)
V
TERM
(3)
V
AC
I
OUT
P
MAX
T
STG
Description
Supply Voltage to Ground
DC Switch Voltage Vs
DC Input Voltage V
IN
AC Input Voltage (pulse width
≤
20ns)
DC Output Current
Maximum Power Dissipation (T
A
= 85°C)
Storage Temperature
Max
–0.5 to +7
–0.5 to +7
–0.5 to +7
–3
120
0.5
–65 to +150
Unit
V
V
V
V
mA
W
°C
NOTE:
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. Vcc terminals.
3. All terminals except Vcc.
CAPACITANCE
QSOP
TOP VIEW
Pins
Control Pins
Quickswitch Channels
(Switch OFF)
(T
A
= +25°C, f = 1.0MH
Z
, V
IN
= 0V, V
OUT
= 0V)
Typ.
4
Demux
Mux
5
9
Max.
(1)
5
7
10
Unit
pF
pF
NOTE:
1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names
A
0
- A
9
B
0
- B
9
AEN, BEN
I/O
I/O
I/O
I
Bus A
Bus B
Bus Switch Enable
Description
FUNCTION TABLE
(1)
AEN
H
L
H
L
BEN
H
H
L
L
A
0
- A
9
Off
On
Off
On
B
0
- B
9
Off
Off
On
On
A to AB
B to AB
A, B to AB
Function
Disconnect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
2
IDTQS32390
HIGH-SPEED CMOS QUICKSWITCH 16:8 MULTIPLEXER
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
= 5.0V ±5%
Symbol
V
IH
V
IL
I
IN
I
OZ
R
ON
(3)
V
P
Parameter
Input HIGH Level
Input LOW Level
Off-State Output Current (Hi-Z)
Switch ON Resistance
Pass Voltage
(2)
Test Conditions
Guaranteed Logic HIGH for Control Pins
Guaranteed Logic LOW for Control Pins
0V
≤
V
OUT
≤
V
CC
, Switches OFF
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
—
—
—
15
15
3.7
Typ.
(1)
—
—
—
—
20
19
4
Max.
—
0.8
±1
±1
35
40
4.2
Unit
V
V
µA
µA
Ω
V
Input LeakageCurrent (Control Inputs)
(2)
0V
≤
V
IN
≤
V
CC
NOTES:
1. Typical values are at V
CC
= 5.0V, T
A
= 25°C.
2. Pass Voltage is guaranteed but not production tested.
3. R
OUT
changed on March 8, 2002. See rear page for more information.
TYPICAL ON RESISTANCE vs V
IN
AT V
CC
= 5V
80
R
ON
(ohms)
70
60
50
40
30
20
10
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
V
IN
(Volts)
3
IDTQS32390
HIGH-SPEED CMOS QUICKSWITCH 16:8 MULTIPLEXER
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 Vcc, f = 0
V
CC
= Max., V
IN
= 3.4V, f = 0
V
CC
= Max., A, B, and AB pins open
Control Inputs Toggling at 50% Duty Cycle
NOTES:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. Per TLL driven input (V
IN
= 3.4V, control inputs only). A, B, and AB 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, B, and AB I/Os generate no
significant AC or DC currents as they transition. This parameter is guaranteed but not production tested.
Max.
3
1.5
0.25
Unit
µA
mA
mA/MHz
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
T
A
= -40°C to +85°C, V
CC
= 5.0V ± 5%;
C
LOAD
= 50pF, R
LOAD
= 500Ω unless otherwise noted.
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Data Propagation Delay
(2,4)
AxBx to CxDx, CxDx to AxBx
Switch Turn-on Delay
BE
to Ax, Bx, Cx, Dx
Switch Turn-off Delay
(2)
BE
to Ax, Bx, Cx, Dx
—
—
5.5
ns
Parameter
Min.
(1)
—
1.5
Typ.
—
—
Max.
1.25
(3)
7.5
Unit
ns
ns
NOTES:
1. Minimums are guaranteed but not production tested.
2. This parameter is guaranteed but not production tested.
3. The time constant for the switch alone is of the order of 1.25ns for C
L
= 50pF.
4. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. 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.
4
IDTQS32390
HIGH-SPEED CMOS QUICKSWITCH 16:8 MULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XXXXX
Device Type
XX
Package
Q
QG
Quarter Size Outline Package
QSOP - Green
32390
High Speed CMOS QuickSwitch 16:8 Multiplexer
As per PCN L0201-02, the Output Resistance (R
ON
) specifications have changed as of March 8, 2002. The original specifications were:
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