2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH
®
PRODUCTS
2.5V / 3.3V QUAD ACTIVE
HIGH, HIGH BANDWIDTH SWITCH
IDTQS3VH126
FEATURES:
• N channel FET switches with no parasitic diode to V
CC
– Isolation under power-off conditions
– No DC path to V
CC
or GND
– 5V tolerant in OFF and ON state
• 5V tolerant I/Os
Ω
• Low R
ON
- 4Ω typical
• 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
• V
CC
operation: 2.3V to 3.6V
• High bandwidth - up to 500MHz
• LVTTL-compatible control Inputs
• Undershoot Clamp Diodes on all switch and control Inputs
• Low I/O capacitance, 4pF typical
• Available in QSOP and SOIC packages
DESCRIPTION:
The QS3VH126 is a high bandwidth bus switch. The QS3VH126 has
very low ON resistance, resulting in under 250ps propagation delay
through the switch. The switches can be turned ON under the control of
individual LVTTL-compatible active high Output Enable signals for bidirec-
tional data flow with no added delay or ground bounce. In the ON state,
the switches can pass signals up to 5V. In the OFF state, the switches offer
very high impedence at the terminals.
The combination of near-zero propagation delay, high OFF impedance,
and over-voltage tolerance makes the QS3VH126 ideal for high perfor-
mance communications applications.
The QS3VH126 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
2
A
3
A
4
A
1O E
2O E
3O E
4O E
1
Y
2
Y
3
Y
4
Y
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c
2004 Integrated Device Technology, Inc.
JANUARY 2004
DSC-5774/9
IDTQS3VH126
2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
Description
Max
V
TERM
(2)
V
TERM
(3)
V
TERM
(3)
SupplyVoltage to Ground
DC Switch Voltage V
S
DC Input Voltage V
IN
AC Input Voltage (pulse width
≤20ns)
DC Output Current (max. sink current/pin)
Storage Temperature
–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
°C
NC
1OE
1
A
1
Y
2OE
2
A
2
Y
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
4OE
4
A
4
Y
3OE
3
A
3
Y
NC
V
AC
I
OUT
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
.
QSOP
TOP VIEW
CAPACITANCE
(T
A
= +25°C, F = 1MHz, V
IN
= 0V, V
OUT
= 0V)
Symbol
C
IN
C
I/O
C
I/O
Parameter
(1)
Control Inputs
Quickswitch Channels (Switch OFF)
Quickswitch Channels (Switch ON)
Typ.
3
4
8
Max.
5
6
12
Unit
pF
pF
pF
NOTE:
1. This parameter is guaranteed but not production tested.
1OE
1
A
1
Y
2OE
2
A
2
Y
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
4OE
4
A
4
Y
3OE
3
A
3
Y
PIN DESCRIPTION
Pin Names
1
A
- 4
A
1
Y
- 4
Y
1OE - 4OE
I/O
I/O
I/O
I
Bus A
Bus Y
Output Enable
Description
FUNCTION TABLE
(1)
OE
A
H
L
X
Y
H
L
X
Function
Connect
Connect
Disconnect
H
H
L
SOIC
TOP VIEW
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
2
IDTQS3VH126
2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH 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
= 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
for Control Inputs
Guaranteed Logic LOW
for Control Inputs
0V
≤
V
IN
≤
V
CC
0V
≤
V
OUT
≤
5V, Switches OFF
V
IN
or V
OUT
0V to 5V, V
CC
= 0V
V
CC
= 2.3V
Typical at V
CC
= 2.5V
V
CC
= 3V
NOTE:
1. Typical values are at V
CC
= 3.3V and T
A
= 25°C.
Test Conditions
Guaranteed Logic HIGH
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
—
—
—
—
—
Typ.
(1)
Max.
—
—
—
—
—
—
—
6
7
4
5
—
—
0.7
0.8
±1
±1
±1
8
9
6
8
Unit
V
V
µA
µA
µA
Ω
V
IN
= 0V
V
IN
= 1.7V
V
IN
= 0V
V
IN
= 2.4V
I
ON
= 30mA
I
ON
= 15mA
I
ON
= 30mA
I
ON
= 15mA
—
—
—
—
TYPICAL ON RESISTANCE vs V
IN
AT V
CC
= 3.3V
16
14
R
ON
12
(ohms)
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
IDTQS3VH126
2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH 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 Y 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 Y 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 Y inputs do not contribute to the Dynamic Power Supply
Current. This parameter is guaranteed but not production tested.
Min.
—
—
Typ.
1
—
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
6
4
I
CCD
(mA)
2
0
0
2
4
6
8
10
12
14
16
18
20
ENABLE FREQUENCY (MHz)
4
IDTQS3VH126
2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH 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
PZL
t
PZH
t
PLZ
t
PHZ
f
xOE
Parameter
Data Propagation Delay
(2,3)
A to Y
Switch Turn-On Delay
xOE to xA/xY
Switch Turn-Off Delay
xOE to xA/xY
Operating Frequency -Enable
(2,5)
Min
.
(4)
V
CC
= 3.3 ± 0.3V
(1)
Min
.
(4)
Max.
0.2
8
7
10
Max.
0.2
6.5
7
20
Unit
ns
ns
ns
MHz
1.5
1.5
1.5
1.5
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.
5. Maximum toggle frequency for xOE control input (pass voltage > V
I downloaded an open source serial port IP core from the Internet, which contains four VHDL files. How can I generate a serial port core in QUARTUS? Is it possible to generate a SYMBOL from a VHDL fil...
Andrew Armutat Product Marketing Keithley Instruments
Model 2602 Dual Channel System Source Meter [1]Important parameters that can reduce test costs
Earlier in this article, we introduced four key fac...
I recently want to display Chinese characters on an LCD without a font library by calling a font library, but I don't know how to get the area code. Please give me some advice! Thank you very much!...
I was working on a project recently, and it seemed that if there were more than 5 dialog boxes at the same time, the machine would hang up. I suspect that it was because there were too many dialog box...
[i=s] This post was last edited by yupc123 on 2016-6-8 10:14 [/i] Because I have learned how to develop based on Alterar's SOCfpga, and can also skillfully write device tree-based drivers, I no longer...
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
Assume that data is read from 8-bit AD (if it is a higher-bit AD, the data type can be defined as int), the subroutine is get_ad();
1. Limited secondary filtering
/* A value can be adjust...[Details]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
Floating-point digital signal processing has become a constant requirement for precision technology, often in applications requiring high accuracy in areas such as aviation, industrial machinery, a...[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
1 Introduction
Solar street lights are mainly composed of four parts: solar photovoltaic cell components, batteries, charge and discharge controllers, and lighting fixtures. The bo...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
This paper establishes a fuel cell engine test platform based on the NI integrated hardware and software environment. This platform can realize the test and control of fuel cell engines and their a...[Details]
Overview
In spectral measurement, photomultiplier tubes (PMT) and charge-coupled devices (CCD) are often used as photoelectric converters. PMT is used in slow-changing, high-precision spectral...[Details]
Motors are important products that convert electrical energy into mechanical energy to achieve automation, and they are widely used in industrial control, medical electronics, white a...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
introduction
At present, the research on micron and nanotechnology is very active, which has led to the rapid development of microtechnology and micro-mechanical electronic system (MEMS) t...[Details]
Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
FPGA/CPLD
京公网安备 11010802033920号
EEWORLD
