• N channel FET switches with no parasitic diode to Vcc
−
Isolation under power-off conditions
−
No DC path to Vcc or GND
−
5V tolerant in OFF and ON state
• 5V tolerant I/Os
• Low R
ON
- 4Ω typical
Ω
• Flat R
ON
characteristics over operating range
• Rail-to-rail switching 0 - 5V
• Bidirectional dataflow with near-zero delay: no added ground
bounce
• Excellent R
ON
matching between channels
• Vcc operation: 2.3V to 3.6V
• High bandwidth - up to 500 MHz
• LVTTL-compatible control Inputs
• Undershoot Clamp Diodes on all switch and control Inputs
• Low I/O capacitance, 4pF typical
• Available in SSOP and TSSOP packages
The QS3VH16211 HotSwitch is a 24-bit high bandwidth bus switch. The
QS3VH16211 has very low ON resistance, resulting in under 250ps
propagation delay through the switch. This device operates as a 24-bit bus
switch. When
1OE
is low, 1An is connected to 1Bn. When
2OE
is low, 2An
is connected to 2Bn. In the OFF and ON states, the switches are 5V-tolerant.
In the OFF state, the switches offer very high impedance at the terminals.
The combination of near-zero propagation delay, high OFF impedance,
and over-voltage tolerance makes the QS3VH16211 ideal for high perfor-
mance communications applications. It is also suitable for switching wide
digital buses.
The QS3VH16211 is characterized for operation from -40°C to +85°C.
APPLICATIONS:
•
•
•
•
•
Hot-swapping
10/100 Base-T, Ethernet LAN switch
Low distortion analog switch
Replaces mechanical relay
ATM 25/155 switching
FUNCTIONAL BLOCK DIAGRAM
1
A
1
1
B
1
2
A
1
2
B
1
1
A
12
1
B
12
2
A
12
2
B
12
1
OE
2
OE
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-5883/4
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
NC
1
A
1
1
A
2
1
A
3
1
A
4
1
A
5
1
A
6
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 (max. current/pin)
Storage Temperature
Max.
– 0.5 to 4.6
– 0.5 to 5.5
– 0.5 to 5.5
–3
120
-65 to +150
Unit
V
V
V
V
mA
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
O E
2
O E
1
B
1
1
B
2
1
B
3
1
B
4
1
B
5
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
V
TERM(2)
V
TERM(3)
V
TERM(3)
V
AC
I
OUT
T
STG
°
C
G ND
1
A
7
1
A
8
1
A
9
1
A
10
1
A
11
1
A
12
2
A
1
2
A
2
G ND
1
B
6
1
B
7
1
B
8
1
B
9
1
B
10
1
B
11
1
B
12
2
B
1
2
B
2
2
B
3
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
Symbol
C
IN
C
I/O
C
I/O
Parameter
(1)
Control Inputs
(T
A
= +25 C, f = 1MHz, V
IN
= 0V, V
OUT
= 0V)
Typ.
3
4
8
Max.
5
6
12
Unit
pF
pF
pF
o
Quickswitch Channels (Switch OFF)
Quickswitch Channels (Switch ON)
V
CC
2
A
3
NOTE:
1. This parameter is guaranteed but not production tested.
G ND
2
A
4
2
A
5
2
A
6
2
A
7
2
A
8
2
A
9
2
A
10
2
A
11
2
A
12
G ND
2
B
4
2
B
5
2
B
6
2
B
7
2
B
8
2
B
9
2
B
10
2
B
11
2
B
12
PIN DESCRIPTION
Pin Names
xA
1
- xA
12
xB
1
- xB
12
1
OE
I/O
I/O
I/O
I
Bus A
Bus B
Description
-
2
OE
Data Select
FUNCTION TABLE
(1)
1
OE
2
OE
1
Ax
1
Bx
1
Bx
2
Ax
2
Bx
Function
1
Ax
1
Ax
2
Ax
L
L
H
L
H
to
1
Bx,
2
Ax to
2
Bx
to
1
Bx
to
2
Bx
SSOP/ TSSOP
TOP VIEW
L
H
H
Z
2
Bx
Z
Z
Z
Disconnect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedence
2
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
(1)
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= –40°C to +85°C, V
CC
= 3.3V ± 0.3V
Symbol
V
IH
V
IL
I
IN
I
OZ
I
OFF
R
ON
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Leakage Current (Control Inputs)
Off-State Current (Hi-Z)
Data Input/Output Power Off Leakage
Switch ON Resistance
Test Conditions
Guaranteed Logic HIGH
for Control Inputs
Guaranteed Logic HIGH
for Control Inputs
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
Min.
1.7
2
—
—
—
—
—
I
ON
= 30mA
I
ON
= 15mA
I
ON
= 30mA
I
ON
= 15mA
—
—
—
—
Typ.
(1)
—
—
—
—
—
—
—
6
7
4
5
Max.
—
—
0.7
0.8
±1
±1
±1
8
9
6
8
Ω
µA
µA
µA
V
Unit
V
≤
V
CC
0V
≤
V
OUT
≤
5V, Switches OFF
V
IN
or V
OUT
0V to 5V, V
CC
= 0V
V
CC
= 2.3V
V
CC
= 3V
V
IN
= 0V
V
IN
= 0V
V
IN
= 2.4V
(Typ. at V
CC
= 2.5V) V
IN
= 1.7V
0V
≤
V
IN
NOTE:
1. Typical values are at V
CC
= 3.3V and T
A
= 25°C, unless otherwise noted.
TYPICAL ON RESISTANCE vs V
IN
AT V
CC
= 3.3V
16
R
ON
(ohms)
14
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
V
IN
(Volts)
3
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
I
CCQ
∆I
CC
I
CCD
Parameter
Quiescent Power Supply Current
Power Supply Current
(2,3)
per Input HIGH
Dynamic Power Supply Current
(4)
Test Conditions
(1)
V
CC
= Max., V
IN
= GND or V
CC
, f = 0
V
CC
= Max., V
IN
= 3V, f = 0 per Control Input
V
CC
= 3.3V, A and B Pins Open, Control Inputs
Toggling @ 50% Duty Cycle
NOTES:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. Per input driven at the specified level. A and B pins do not contribute to
∆Icc.
3. This parameter is guaranteed but not tested.
4. This parameter represents the current required to switch internal capacitance at the specified frequency. The A and B inputs do not contribute to the Dynamic Power Supply
Current. This parameter is guaranteed but not production tested.
Min.
—
—
Typ.
1.5
—
Max.
3
30
Unit
mA
µA
See Typical I
CCD
vs Enable Frequency graph below
TYPICAL I
CCD
vs ENABLE FREQUENCY CURVE AT V
CC
= 3.3V
20
18
16
14
12
I
CCD
(mA)
10
8
6
4
2
0
0
2
4
6
8
10
12
14
16
18
20
ENABLE FREQUENCY (MHz)
4
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
T
A
= -40°C to +85°C
V
CC
= 2.5 ± 0.2V
(1)
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
f
xOE
Parameter
Data Propagation Delay
(2,3)
xAx to xBx or xBx to xAx
Switch Turn-On Delay
xOE
to xAx or xBx
Switch Turn-Off Delay
xOE
to xAx or xBx
Operating Frequency - Enable
(2,5)
1.5
1.5
9
8.5
7.5
1.5
1.5
9
8.5
20
ns
ns
MHz
Min
.
(4)
Max.
V
CC
= 3.3 ± 0.3V
(1)
Min
.
(4)
Max.
Unit
ns
0.2
0.2
NOTES:
1. See Test Conditions under TEST CIRCUITS AND WAVEFORMS.
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 0.2ns 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. Minimums are guaranteed but not production tested.
This is my first time to use DLP devices. After reading the basics, I have a basic understanding of them. They have advantages in visualization. I think if I use their interface to make a visual gamin...
The IP I use is 10.125.131.198. When the other party broadcasts, I can monitor the broadcast data sent to 10.125.131.255 using EtherPeek software, but my vxworks software cannot receive it. But after ...
This is a question about CDMA Internet dial-up software. The modem dialed successfully, and the PPP negotiation obtained the IP address and confirmed it. However, I still cannot ping 10.0.0.172 on the...
I started to get in touch with microcontrollers only after joining this forum. I had no basic knowledge at first (I have never been to college). I started to get in touch with this knowledge only afte...
1. Introduction
Since the 1980s, with the continuous development of automotive electronic technology, there are more and more electronic control units in automobiles, such as electronic fuel i...[Details]
When choosing a laptop battery, you should consider several factors, such as power, appearance, and quality.
Regarding power, we often see that a manufacturer uses values such as the number ...[Details]
1. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
1. Proposal of
reconfigurable
measurement and control system
The measurement and control system generally refers to a system based on
computers
to realize data acquisition a...[Details]
A stepper motor is an electromagnetic mechanical device that converts an electrical pulse signal into an angular displacement or a linear displacement. The stability and reliability of a stepper mo...[Details]
0 Introduction
There are many types of sensors, and the working principles, measurement targets and measurement environments of different types of sensors vary greatly. The corresponding detection s...[Details]
0 Introduction
In order to improve the automation control of shortwave transmitters, so that they can automatically process from far to near, the technicians here use the ICS system to complete the ...[Details]
Against the backdrop of global warming, energy conservation and emission reduction have become a global hotspot and focus, which has also sounded the clarion call for the take-off of the LED lighti...[Details]
The demand for improved healthcare environments is endless, so medical imaging equipment with higher resolution is needed to better observe the human body. High resolution brings problems with sign...[Details]
Battery clamps, commonly known as battery connectors, come in two sizes depending on the thickness of the battery terminals. One is the battery clamp used on thick terminals, with a positive termin...[Details]
Electrostatic coupling and interference occur when a charged object is close to the input of the circuit being measured. At low impedance, the effects of interference are not noticeable because th...[Details]
1 Introduction
Washing machines are an indispensable household appliance in the home, and they are developing very fast. Fully automatic washing machines are favored by everyone because of their con...[Details]
Some people think: as long as the program runs well, it doesn't matter how the original program is written. But this is absolutely not the case. Software is not completed in one go, and it is neces...[Details]
1. Electromagnetic compatibility design
Electromagnetic compatibility refers to the ability of electronic equipment to work in a coordinated and effective manner in various electromagnetic env...[Details]
TI Technology Forum
京公网安备 11010802033920号
EEWORLD
