IDTQS3VH125QG [IDT]
QUICKSWITCH PRODUCTS 2.5V / 3.3V QUAD ACTIVE LOW, HIGH BANDWIDTH BUS SWITCH; 快速切换产品2.5V / 3.3V QUAD有源低，高带宽总线开关
| 型号： | IDTQS3VH125QG |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | QUICKSWITCH PRODUCTS 2.5V / 3.3V QUAD ACTIVE LOW, HIGH BANDWIDTH BUS SWITCH |
| 文件： | 总8页 (文件大小：79K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
2.5V / 3.3V QUAD ACTIVE LOW,
IDTQS3VH125
HIGH BANDWIDTH BUS SWITCH
FEATURES:
DESCRIPTION:
• N channel FET switches with no parasitic diode to VCC
– Isolationunderpower-offconditions
– No DC path to VCC or GND
TheQS3VH125isahighbandwidth, Quadbusswitch. TheQS3VH125
has very low ON resistance, resulting in under 250ps propagation delay
through the switch. The switches can be turned ON under the control of
individualLVTTL-compatibleactivelowOutputEnablesignalsforbidirec-
tional data flow with no added delay or ground bounce. In the ON state,
theswitchescanpasssignalsupto5V. IntheOFFstate, theswitchesoffer
very high impedence at the terminals.
– 5V tolerant in OFF and ON state
• 5V tolerant I/Os
• Low RON - 4Ω typical
• Flat RON characteristics over operating range
• Rail-to-rail switching 0 - 5V
Thecombinationofnear-zeropropagationdelay, highOFFimpedance,
and over-voltage tolerance makes the QS3VH125 ideal for high perfor-
mancecommunicationsapplications.
• Bidirectional dataflow with near-zero delay: no added ground
bounce
• Excellent RON matching between channels
• VCC operation: 2.3V to 3.6V
The QS3VH125 is characterized for operation from -40°C to +85°C.
• 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, TSSOP, and SOIC packages
APPLICATIONS:
• Hot-swapping
• 10/100 Base-T, Ethernet LAN switch
• Low distortion analog switch
• Replaces mechanical relay
• ATM 25/155 switching
FUNCTIONALBLOCKDIAGRAM
1A
2A
3A
4A
1OE
2OE
3OE
4OE
1Y
2Y
3Y
4Y
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 2003
1
c
2003 Integrated Device Technology, Inc.
DSC-5597/7
IDTQS3VH125
INDUSTRIALTEMPERATURERANGE
2.5V/3.3VQUADACTIVELOW,HIGHBANDWIDTHSWITCH
ABSOLUTEMAXIMUMRATINGS(1)
PINCONFIGURATION
Symbol
Description
SupplyVoltage to Ground
Max
–0.5 to +4.6
–0.5 to +5.5
–0.5 to +5.5
–3
Unit
V
(2)
VTERM
(3)
VTERM
DC Switch Voltage VS
V
(3)
1
2
3
4
5
6
7
8
VCC
4OE
4A
VTERM
DC Input Voltage VIN
V
NC
1OE
1A
16
15
14
13
12
11
10
9
VAC
IOUT
AC Input Voltage (pulse width ≤20ns)
DC Output Current (max. sink current/pin)
Storage Temperature
V
120
mA
°C
TSTG
–65 to +150
NOTES:
1Y
4Y
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.
2OE
2A
3OE
3A
2. VCC terminals.
3. All terminals except VCC .
2Y
3Y
GND
NC
QSOP
TOP VIEW
CAPACITANCE (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = 0V)
Symbol
CIN
Parameter(1)
Typ.
Max. Unit
Control Inputs
3
4
8
5
6
pF
pF
pF
CI/O
Quickswitch Channels (Switch OFF)
Quickswitch Channels (Switch ON)
CI/O
12
NOTE:
1. This parameter is guaranteed but not production tested.
1OE
1A
1
VCC
14
13
12
11
10
9
2
3
4
5
6
7
4OE
4A
PINDESCRIPTION
1Y
Pin Names
1A - 4A
I/O
I/O
I/O
I
Description
2OE
2A
4Y
Bus A
Bus Y
1Y - 4Y
3OE
3A
1OE - 4OE
Output Enable
2Y
GND
8
3Y
FUNCTIONTABLE(1)
OE
A
H
L
Y
H
L
Function
SOIC/ TSSOP
TOP VIEW
L
Connect
L
Connect
H
X
X
Disconnect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
2
IDTQS3VH125
INDUSTRIALTEMPERATURERANGE
2.5V/3.3VQUADACTIVELOW,HIGHBANDWIDTHSWITCH
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = –40°C to +85°C, VCC = 3.3V ±0.3V
Symbol
Parameter
Input HIGH Voltage
Test Conditions
Min.
1.7
2
Typ.(1) Max.
Unit
VIH
GuaranteedLogicHIGH
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
—
—
—
—
—
—
—
6
—
—
0.7
0.8
±1
±1
±1
8
V
forControlInputs
GuaranteedLogicLOW
forControlInputs
0V ≤ VIN ≤ VCC
VIL
InputLOWVoltage
—
—
—
—
—
—
—
—
—
V
IIN
IOZ
InputLeakageCurrent(ControlInputs)
Off-StateCurrent(Hi-Z)
µA
µA
µA
0V ≤ VOUT ≤ 5V, Switches OFF
VIN or VOUT 0V to 5V, VCC = 0V
VCC = 2.3V
IOFF
DataInput/OutputPowerOffLeakage
VIN = 0V
ION = 30mA
ION = 15mA
ION = 30mA
ION = 15mA
RON
Switch ON Resistance
Typical at VCC = 2.5V
VCC = 3V
VIN = 1.7V
VIN = 0V
7
9
Ω
4
6
VIN = 2.4V
5
8
NOTE:
1. Typical values are at VCC = 3.3V and TA = 25°C.
IN
CC
TYPICAL ON RESISTANCE vs V AT V = 3.3V
16
14
12
RON
(ohms)
10
8
6
4
2
0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1.0
0.0
0.5
VIN
(Volts)
3
IDTQS3VH125
INDUSTRIALTEMPERATURERANGE
2.5V/3.3VQUADACTIVELOW,HIGHBANDWIDTHSWITCH
POWERSUPPLYCHARACTERISTICS
Symbol
ICCQ
Parameter
TestConditions(1)
Min.
—
Typ.
1
Max.
3
Unit
mA
µA
Quiescent Power Supply Current
Power Supply Current (2,3) per Input HIGH
Dynamic Power Supply Current (4)
VCC = Max., VIN = GND or VCC, f = 0
VCC = Max., VIN = 3V, f = 0 per Control Input
VCC = 3.3V, A and Y Pins Open, Control Inputs
Toggling @ 50% Duty Cycle
∆ICC
—
—
30
ICCD
See Typical ICCD vs Enable Frequency graph below
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.
CCD
CC
TYPICAL I
vs ENABLE FREQUENCY CURVE AT V = 3.3V
6
4
2
0
0
2
4
6
8
10
12
14
16
18
20
ENABLE FREQUENCY (MHz)
4
IDTQS3VH125
INDUSTRIALTEMPERATURERANGE
2.5V/3.3VQUADACTIVELOW,HIGHBANDWIDTHSWITCH
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE
TA = -40°C to +85°C
VCC = 2.5 ± 0.2V (1)
VCC = 3.3 ± 0.3V (1)
(4)
(4)
Symbol
tPLH
tPHL
Parameter
DataPropagationDelay(2,3)
A to Y
Max.
Min.
Max.
Unit
Min.
0.2
0.2
ns
tPZL
tPZH
tPLZ
SwitchTurn-OnDelay
xOE to xA/xY
SwitchTurn-OffDelay
1.5
8
1.5
1.5
6.5
7
ns
ns
1.5
7
tPHZ
xOE to xA/xY
fxOE
OperatingFrequency-Enable(2,5)
10
20
MHz
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 CL = 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 > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).
5
IDTQS3VH125
INDUSTRIALTEMPERATURERANGE
2.5V/3.3VQUADACTIVELOW,HIGHBANDWIDTHSWITCH
SOMEAPPLICATIONSFORHOTSWITCHPRODUCTS
NFET
0 to +5V
0 to +5V
+6.5V
Vcc = 3.3V
CHARGE PUMP
DRIVER
OE
SINGLE HOT
SWITCH
Rail-to-Rail Switching
PHY
3VH
SWITCH
4.5VPP
10Mbps to 100Mbps
>100m
LOGIC
SIDE
LOGIC
SIDE
Z = 100 Ω
Z = 100 Ω
4.5VPP
TWISTED PAIR
2VPP
Fast Ethernet Data Switching (LAN Switch)
ZERO DOWN TIME SYSTEM
PLUGGABLE CARD/ LIVE SYSTEM
ON CARD
LOGIC
CARD I/O
CPU
ON CARD
LOGIC
CARD I/O
RAM
BUS
Hot-Swapping
6
IDTQS3VH125
INDUSTRIALTEMPERATURERANGE
2.5V/3.3VQUADACTIVELOW,HIGHBANDWIDTHSWITCH
TESTCIRCUITSANDWAVEFORMS
TESTCONDITIONS
VIH
VT
SAME PHASE
INPUT TRANSITION
Symbol
VLOAD
VIH
VCC(1)= 3.3V ± 0.3V
VCC(2)= 2.5V ± 0.2V
Unit
0V
6
2 x Vcc
Vcc
V
tPHL
tPHL
tPLH
tPLH
VOH
VT
OUTPUT
3
V
VOL
VT
1.5
300
300
50
VCC/2
150
V
VIH
VT
VLZ
mV
mV
pF
OPPOSITE PHASE
INPUT TRANSITION
VHZ
150
0V
CL
30
Propagation Delay
VLOAD
Open
GND
VCC
DISABLE
tPLZ
ENABLE
VIH
CONTROL
INPUT
VT
0V
500Ω
tPZL
VIN
VOUT
Pulse(1, 2)
Generator
VLOAD/2
D.U.T.
VLOAD/2
OUTPUT
NORMALLY
LOW
SWITCH
CLOSED
VT
VOL + VLZ
VOL
500Ω
tPHZ
RT
tPZH
SWITCH
OPEN
CL
VOH
VOH -VHZ
OUTPUT
NORMALLY
HIGH
VT
0V
0V
Test Circuits for All Outputs
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
Enable and Disable Times
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
NOTES:
1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.
SWITCHPOSITION
Test
tPLZ/tPZL
tPHZ/tPZH
tPD
Switch
VLOAD
GND
Open
7
IDTQS3VH125
INDUSTRIALTEMPERATURERANGE
2.5V/3.3VQUADACTIVELOW,HIGHBANDWIDTHSWITCH
ORDERINGINFORMATION
IDTQS
XXXXX
XX
Package
Device Type
S1
S1G
Q
QG
PA
Small Outline IC
SOIC - Green
Quarter Size Outline Package
QSOP - Green
Thin Shrink Small Outline Package
2.5V / 3.3V Quad Active Low, High Bandwidth Switch
3VH125
DATASHEETDOCUMENTHISTORY
8/6/2002 Updated according to PCN Logic-0206-11
3/3/2003 Changed Icc limits
CORPORATE HEADQUARTERS
2975StenderWay
Santa Clara, CA 95054
for SALES:
for Tech Support:
logichelp@idt.com
(408) 654-6459
800-345-7015 or 408-727-6116
fax: 408-492-8674
www.idt.com
8
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IDT
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