IDTQS34XVH2245 [IDT]
QUICKSWITCH㈢ PRODUCTS 2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH; QUICKSWITCH㈢产品2.5V / 3.3V 32位，高带宽总线开关
| 型号： | IDTQS34XVH2245 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | QUICKSWITCH㈢ PRODUCTS 2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH |
| 文件： | 总8页 (文件大小：74K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
IDTQS34XVH2245
2.5V / 3.3V 32-BIT 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
The QS34XVH2245 is a high bandwidth, 32-bit bus switch. The
QS34XVH2245with25Ωresistanceand1.35nspropagationdelayisideal
forlinematchingandlownoiseenvironments. Theswitchescanbeturned
ONunderthecontrolofindividualLVTTL-compatibleOutputEnable(OEx)
signals for bidirectional 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.
– 5V tolerant in OFF and ON state
• 5V tolerant I/Os
• Flat RON characteristics over operating range
• Rail-to-rail switching 0 - 5V
• Bidirectional dataflow with near-zero delay: no added ground
bounce
• Excellent RON matching between channels
• VCC operation: 2.3V to 3.6V
Thecombinationofsmallpropagationdelay, highOFFimpedance, and
over-voltage tolerance makes the QS34XVH2245 ideal for high perfor-
mancecommunicationsapplications.
TheQS34XVH2245ischaracterizedforoperationfrom-40°C to+85°C.
• High bandwidth
• LVTTL-compatible control Inputs
• Undershoot Clamp Diodes on all switch and control Inputs
• Low I/O capacitance, 4pF typical
• 25Ω resistors for low noise and line matching
• Available in 80-pin QVSOP package
APPLICATIONS:
• Hot-swapping
• Low distortion analog switch
• Replaces mechanical relay
• ATM 25/155 switching
FUNCTIONALBLOCKDIAGRAM
A0
A1
A2
A3
A4
A5
A6
A7
A16 A17 A18 A19 A20 A21 A22 A23
OE1
OE3
B16 B17 B18 B19 B20 B21 B22 B23
A24 A25 A26 A27 A28 A29 A30 A31
B0
A8
B1
B2
B3
B4
B5
B6
B7
A9 A10 A11 A12 A13 A14 A15
OE2
OE4
B24 B25 B26 B27 B28 B29 B30 B31
B8
B9 B10 B11 B12 B13 B14 B15
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 2003
1
c
2003 Integrated Device Technology, Inc.
DSC-5592/11
IDTQS34XVH2245
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V32-BITHIGHBANDWIDTHBUSSWITCH
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)
1
2
3
VTERM
DC Switch Voltage VS
V
NC
A0
80
79
78
77
Vcc
OE1
B0
(3)
VTERM
DC Input Voltage VIN
V
VAC
IOUT
AC Input Voltage (pulse width ≤20ns)
DC Output Current (max. sink current/pin)
Storage Temperature
V
A1
120
mA
°C
4
5
6
A2
B1
TSTG
–65 to +150
A3
B2
76
NOTES:
A4
B3
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.
75
74
73
7
A5
B4
8
A6
B5
9
A7
B6
72
71
70
69
68
2. VCC terminals.
3. All terminals except VCC .
10
GND
NC
A8
B7
11
12
13
14
15
16
17
18
19
Vcc
OE2
B8
A9
CAPACITANCE (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = 0V)
B9
A10
A11
A12
A13
A14
A15
GND
NC
67
66
65
Symbol
CIN
Parameter(1)
Typ.
Max. Unit
B10
B11
Control Inputs
3
4
8
5
6
pF
pF
pF
CI/O
Quickswitch Channels (Switch OFF)
Quickswitch Channels (Switch ON)
B12
B13
B14
B15
Vcc
OE3
B16
64
CI/O
12
63
62
NOTE:
1. This parameter is guaranteed but not production tested.
20
21
61
60
59
58
57
56
A16
A17
A18
A19
22
23
24
25
26
PINDESCRIPTION
Pin Names
OEx
I/O
I
Description
Output Enable
B17
B18
B19
B20
B21
B22
B23
Vcc
Ax
I/O
I/O
Bus A
Bus B
A20
A21
55
54
53
52
Bx
27
28
29
A22
A23
GND
NC
30
31
32
FUNCTIONTABLE(1)
51
50
OEx
Function
A24
A25
A26
A27
A28
A29
A30
A31
49
OE4
B24
B25
B26
B27
B28
B29
B30
B31
H
L
Disconnected
Connect (Ax = Bx)
33
48
47
46
34
35
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
36
37
38
39
40
45
44
43
42
41
GND
QVSOP
TOP VIEW
2
IDTQS34XVH2245
2.5V/3.3V32-BITHIGHBANDWIDTHBUSSWITCH
INDUSTRIALTEMPERATURERANGE
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
—
—
—
—
—
—
—
27
28
25
26
—
—
V
forControlInputs
GuaranteedLogicLOW
forControlInputs
0V ≤ VIN ≤ VCC
VIL
InputLOWVoltage
—
—
—
—
—
18
18
18
18
0.7
0.8
±1
±1
±1
39
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
41
Ω
38
VIN = 2.4V
40
NOTE:
1. Typical values are at VCC = 3.3V and TA = 25°C.
IN
CC
TYPICAL ON RESISTANCE vs V AT V = 3.3V
40
35
30
25
RON
(ohms)
20
15
10
5
0
5
3
3.5
4
4.5
0
0.5
1
1.5
2
2.5
VIN
(Volts)
3
IDTQS34XVH2245
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V32-BITHIGHBANDWIDTHBUSSWITCH
POWERSUPPLYCHARACTERISTICS
Symbol
ICCQ
Parameter
TestConditions(1)
Min.
—
Typ.
4
Max.
12
Unit
mA
µA
Quiescent Power Supply Current
Power Supply Current (2,3) per Input HIGH
Dynamic Power Supply Current per Output
EnableControlInput(4)
VCC = Max., VIN = GND or VCC, f = 0
VCC = Max., VIN = 3V, f = 0 per Control Input
∆ICC
—
—
30
ICCD
VCC = 3.3V, A and B Pins Open, Control Inputs See Typical ICCD vs Enable Frequency graph below
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.
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
IDTQS34XVH2245
2.5V/3.3V32-BITHIGHBANDWIDTHBUSSWITCH
INDUSTRIALTEMPERATURERANGE
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)
Ax to/from Bx
Max.
Min.
Max.
Unit
Min.
0.9
1.35
ns
tPZL
tPZH
tPLZ
SwitchTurn-OnDelay
OEx to Ax/Bx
SwitchTurn-OffDelay
1.5
9
1.5
1.5
8
ns
ns
1.5
7.5
7.5
tPHZ
OEx to Ax/Bx
fOEx
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 1.35ns 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 OEx control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).
5
IDTQS34XVH2245
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V32-BITHIGHBANDWIDTHBUSSWITCH
SOMEAPPLICATIONSFORHOTSWITCHPRODUCTS
NFET
0 to +5V
0 to +5V
+6.5V
Vcc = 3.3V
CHARGE PUMP
OE
DRIVER
SINGLE HOT
SWITCH
Rail-to-Rail Switching
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
IDTQS34XVH2245
2.5V/3.3V32-BITHIGHBANDWIDTHBUSSWITCH
INDUSTRIALTEMPERATURERANGE
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
IDTQS34XVH2245
INDUSTRIALTEMPERATURERANGE
2.5V/3.3V32-BITHIGHBANDWIDTHBUSSWITCH
ORDERINGINFORMATION
IDTQS
XXXXX
XX
Package
Device Type
80-Pin QVSOP
Q3
2.5V / 3.3V 32-Bit High Bandwidth Bus Switch
34XVH2245
DATASHEETDOCUMENTHISTORY
8/6/2002 Updated according to PCN Logic-0206-11
3/3/2003 Changed Icc limits
CORPORATE HEADQUARTERS
for SALES:
for Tech Support:
2975StenderWay
Santa Clara, CA 95054
800-345-7015 or 408-727-6116
fax: 408-492-8674
logichelp@idt.com
(408) 654-6459
www.idt.com
8
相关型号：
IDTQS34XVH2245Q3G8
Bus Driver, CBT/FST/QS/5C/B Series, 4-Func, 8-Bit, True Output, PDSO80, QVSOP-80
IDT
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