Enhanced N channel FET with no inherent diode to Vcc
5Ω bidirectional switches connect inputs to outputs
Ω
Zero propagation delay, zero added ground bounce
Undershoot clamp diodes on all switch and control inputs
Two enables control five bits each
Available in QSOP and TSSOP packages
The QS3384 provides a set of ten high-speed CMOS, TTL-compatible
bus switches. The low ON resistance of QS3384 allows inputs to be
connected to outputs without adding propagation delay and without gener-
ating additional ground bounce. Two banks of 5 switches are controlled by
independent Bus Enable (BE) signals.
The QS3384 is characterized for operation at -40°C to +85°C.
APPLICATIONS:
•
•
•
•
•
•
Hot-swapping, hot-docking
Voltage translation (5V to 3.3V)
Power Conservation
Capacitance reduction and isloation
Bus Isolation
Clock Gating
FUNCTIONAL BLOCK DIAGRAM
A
0
B
0
A
4
A
5
B
4
B
5
A
9
B
9
BEA
BEB
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
c 2011 Integrated Device Technology, Inc.
OCTOBER 2011
1
DSC-5758/6
IDTQS3384
HIGH-SPEED CMOS 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
BEA
B
0
A
0
A
1
B
1
B
2
A
2
A
3
B
3
B
4
A
4
GND
1
2
3
4
5
6
7
8
9
10
11
12
QSOP/ TSSOP
TOP VIEW
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)
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
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
B
9
A
9
A
8
B
8
B
7
A
7
A
6
B
6
B
5
A
5
BEB
V
TERM
(2)
V
TERM
(3)
V
TERM
(3)
V
AC
I
OUT
P
MAX
T
STG
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)
Typ.
3
5
Max.
(1)
5
7
Unit
pF
pF
NOTE:
1. This parameter is guaranteed but not production tested.
PIN DESCRIPTION
Pin Names
A
0
- A
9
B
0
- B
9
BEA, BEB
I/O
I/O
I/O
I
Bus A
Bus B
Bus Switch Enable
Description
FUNCTION TABLE
(1)
BEA
H
L
H
L
BEB
H
H
L
L
B
0
- A
4
Hi-Z
A
0
- A
4
Hi-Z
A
0
- A
4
B
5
- B
9
Hi-Z
Hi-Z
A
5
- A
9
A
5
- A
9
Function
Disconnect
Connect
Connect
Connect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance
2
IDTQS3384
HIGH-SPEED CMOS 10-BIT BUS SWITCH
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 ± 5%
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 Pins
Guaranteed Logic LOW for Control Pins
0V
≤
V
IN
≤
V
CC
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
—
—
—
—
—
3.7
Typ.
(1)
Max.
—
—
±0.01
±0.01
5
10
4
—
0.8
±1
±1
7
15
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
14
R
ON
(ohms)
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
V
IN
(Volts)
3
IDTQS3384
HIGH-SPEED CMOS 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
I
CCQ
ΔI
CC
I
CCD
Parameter
Quiescent Power Supply Current
Power Supply Current per 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.
1.5
2.5
0.25
Unit
mA
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, control inputs only). A and B pins do not contribute to
ΔIcc.
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 ± 5%
C
LOAD
= 50pF, R
LOAD
= 500Ω unless otherwise noted.
Symbol
t
PLH
t
PHL
t
PZL
t
PZH
t
PLZ
t
PHZ
Parameter
Data Propagation Delay
(2)
Ax to Bx, Bx to Ax
Switch Turn-On Delay
BEA, BEB
to Ax, Bx
Switch Turn-Off Delay
(2)
BEA, BEB
to Ax, Bx
Min
.
(1)
⎯
1.5
1.5
Typ.
⎯
⎯
⎯
Max.
0.25
(3)
6.5
5.5
Unit
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
the driven side.
4
IDTQS3384
HIGH-SPEED CMOS 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
QS
XXXXX
Device Type
XX
Package
X
Blank
8
QG
PAG
Tube or Tray
Tape and Reel
Quarter Size Outline Package - Green
Thin Small Size Outline Package - Green
High Speed CMOS 10-Bit Bus Switch
3384
Datasheet Document History
10/25/11
Pg. 5
Updated ordering information to include tube or tray and tape & reel. Removed non green package
version and updated the ordering information by removing the “IDT” notation.
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