IDTQS3VH862Q [IDT]
2.5V / 3.3V 10-BIT HIGH AND LOW ENABLE, HIGH BANDWIDTH BUS SWITCH; 2.5V / 3.3V 10位高和低电平有效使能，高带宽总线开关
| 型号： | IDTQS3VH862Q |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | 2.5V / 3.3V 10-BIT HIGH AND LOW ENABLE, HIGH BANDWIDTH BUS SWITCH |
| 文件： | 总8页 (文件大小：72K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
2.5V / 3.3V 10-BIT HIGH AND
IDTQS3VH862
LOW ENABLE, 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
TheQS3VH862HotSwitchwith10-bitactivehighandlowenableisahigh
bandwidth bus switch. The QS3VH862 has very low ON resistance,
resulting in under 250ps propagation delay through the switch. The
switches are controlled by independent active low enable (BE) and active
high enable (BE) controls. 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.
– 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 QS3VH862 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 QS3VH862 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 and TSSOP packages
APPLICATIONS:
• Hot-swapping
• 10/100 Base-T, Ethernet LAN switch
• Low distortion analog switch
• Replaces mechanical relay
• ATM 25/155 switching
FUNCTIONALBLOCKDIAGRAM
A0
B0
A9
B9
BE
BE
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
AUGUST 2002
1
c
2002 Integrated Device Technology, Inc.
DSC-5859/8
IDTQS3VH862
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V10-BITACTIVEHIGHANDLOWENABLE,HIGH BANDWIDTHBUSSWITCH
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
BE
A0
1
24
23
22
21
20
19
18
17
16
15
14
13
VCC
BE
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
(3)
VTERM
DC Input Voltage VIN
V
2
VAC
IOUT
AC Input Voltage (pulse width ≤20ns)
DC Output Current (max. sink current/pin)
Storage Temperature
V
A1
3
120
mA
°C
TSTG
–65 to +150
A2
4
NOTES:
A3
5
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.
A4
6
A5
7
8
A6
2. VCC terminals.
3. All terminals except VCC .
A7
9
A8
10
11
12
A9
CAPACITANCE (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = 0V)
GND
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
QSOP/ TSSOP
TOP VIEW
NOTE:
1. This parameter is guaranteed but not production tested.
PINDESCRIPTION
Pin Names
BE
Description
Active HIGH Bus Enable
Active LOW Bus Enable
Bus A
BE
A0 - A9
B0 - B9
Bus B
FUNCTIONTABLE(1)
BE
BE
A0 - A9
Function
Disconnect
Disconnect
Connect
L
L
Z
L
H
Z
B0 - B9
Z
H
H
L
H
Disconnect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedence
2
IDTQS3VH862
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V10-BITACTIVEHIGHANDLOWENABLE,HIGH BANDWIDTHBUSSWITCH
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
IDTQS3VH862
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V10-BITACTIVEHIGHANDLOWENABLE,HIGH BANDWIDTHBUSSWITCH
POWERSUPPLYCHARACTERISTICS
Symbol
ICCQ
Parameter
TestConditions(1)
Min.
—
Typ.
1
Max.
4
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 B 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 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.
CCD
CC
TYPICAL I
vs ENABLE FREQUENCY CURVE AT V = 3.3V
12
10
8
6
4
2
0
0
2
4
6
8
10
12
14
16
18
20
ENABLE FREQUENCY (MHz)
4
IDTQS3VH862
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V10-BITACTIVEHIGHANDLOWENABLE,HIGH BANDWIDTHBUSSWITCH
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE
TA = -40°C to +85°C
VCC = 2.5 ± 0.2V (1)
VCC = 3.3 ± 0.3V (1)
(4)
(4)
Symbol
tPLH
tPHL
tPZH
tPZL
Parameter
DataPropagationDelay(2,3)
A to B or B to A
Max.
Min.
Max.
0.2
Unit
Min.
1.5
0.2
ns
SwitchTurn-OnDelay
BE or BE to xA or xB
SwitchTurn-OffDelay
BE or BE to xA or xB
8
7
1.5
1.5
7
ns
ns
tPHZ
tPLZ
1.5
6.5
fBEorBE
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 BE or BE control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).
5
IDTQS3VH862
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V10-BITACTIVEHIGHANDLOWENABLE,HIGH BANDWIDTHBUSSWITCH
SOMEAPPLICATIONSFORHOTSWITCHPRODUCTS
NFET
0 to +5V
0 to +5V
+6.5V
Vcc = 3.3V
CHARGE PUMP
OE
DRIVER
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
IDTQS3VH862
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V10-BITACTIVEHIGHANDLOWENABLE,HIGH BANDWIDTHBUSSWITCH
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
tPHL
tPHL
tPLH
tPLH
6
2 x Vcc
Vcc
V
VOH
VT
OUTPUT
3
V
VOL
VT
1.5
300
300
50
VCC/2
150
V
VIH
VT
OPPOSITE PHASE
INPUT TRANSITION
VLZ
mV
mV
pF
0V
VHZ
150
CL
30
Propagation Delay
VLOAD
Open
GND
VCC
DISABLE
tPLZ
ENABLE
VIH
CONTROL
INPUT
VT
0V
500Ω
tPZL
VIN
VOUT
Pulse(1, 2)
VLOAD/2
VT
D.U.T.
VLOAD/2
OUTPUT
NORMALLY
LOW
Generator
SWITCH
CLOSED
VOL + VLZ
VOL
500Ω
tPHZ
RT
tPZH
CL
VOH
VOH -VHZ
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
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
IDTQS3VH862
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V10-BITACTIVEHIGHANDLOWENABLE,HIGH BANDWIDTHBUSSWITCH
ORDERINGINFORMATION
IDTQS
XXXXX
XX
Package
Device Type
Q
Quarter Size Outline Package
PA
Thin Shrink Small Outline Package
2.5V / 3.3V 10-Bit Active High and Low Enable,
High Bandwidth Switch
3VH862
DATASHEETDOCUMENTHISTORY
8/6/2002 Updated according to PCN Logic-0206-11
CORPORATE HEADQUARTERS
2975StenderWay
Santa Clara, CA 95054
for SALES:
800-345-7015 or 408-727-6116
fax: 408-492-8674
www.idt.com
for Tech Support:
logichelp@idt.com
(408) 654-6459
8
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