IDTQS34X2245Q3G [IDT]
QUICKSWITCH PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES; 快速切换产品高速CMOS快速切换32位MULTIWIDTH总线开关
| 型号： | IDTQS34X2245Q3G |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | QUICKSWITCH PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES |
| 文件： | 总5页 (文件大小：51K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
IDTQS34X2245
HIGH-SPEED CMOS
QUICKSWITCH 32-BIT
MULTIWIDTH™ BUS SWITCHES
FEATURES:
DESCRIPTION:
TheQS34X2245isamemberoftheMultiWidthTM familyofQuickSwitch
devicesandprovidesasetof32high-speedCMOScompatiblebusswitches
in a flow-through pinout. This device is available in the MillipaQ package,
the worlds first small outline 32-bit solution. The low ON-resistance of the
QS34X2245 allows inputs to be connected to outputs without adding
propagationdelayandwithoutgeneratingadditionalgroundbouncenoise.
Internal 25Ωresistors reduce reflection noise in high-speed applications.
When Output Enable (OEn) is low, the switches are turned on, connecting
bus A to bus B. When OEn is high, the switches are turned off. This device
isideallysuitedfor32/64bitapplicationswhereboardspaceisatapremium.
QuickSwitch devices provide speeds an order of magnitude faster than
conventionallogicdevices.
• Enhanced N channel FET with no inherent diode to Vcc
• Bidirectional switches connect inputs to outputs
• Zero propagation delay, zero ground bounce
• Internal 25Ω resistors for low noise
• Flow-through pinout for easy layout
• Undershoot clamp diodes on all switch and control inputs
• TTL-compatible control inputs
• Available in 80-pin MilliPaQ™ package
APPLICATIONS:
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Bus switching and isolation
• Power conservation
The QS34X2245 is characterized for operation at -40°C to +85°C.
• Logic replacement (data processing)
• Capacitance isolation
• Clock gating
FUNCTIONALBLOCKDIAGRAM
A7
A0
A1 A2 A3
A4
A5 A6
A23
A16 A17 A18 A19 A20 A21 A22
OE3
OE1
B2 B3
B1
B4
B5 B6 B7
B16 B17 B18 B19 B20 B21 B22 B23
A24 A25 A26 A27 A28 A29 A30 A31
B0
A8
A12
A9 A10 A11
A13 A14
A15
OE4
OE2
B8
B9 B10
B11 B12
B13 B14 B15
B24 B25 B26 B27 B28 B29 B30 B31
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 2002
1
c
2002 Integrated Device Technology, Inc.
DSC-5556/3
IDTQS34X2245
HIGH-SPEEDCMOSQUICKSWITCH32-BITMULTIWIDTHBUSSWITCHES
INDUSTRIALTEMPERATURERANGE
ABSOLUTEMAXIMUMRATINGS(1)
PINCONFIGURATION
Symbol
Description
Supply Voltage to Ground
DC Switch Voltage Vs
Max
–0.5 to +7
–0.5 to +7
–0.5 to +7
–3
Unit
V
(2)
VTERM
VCC
OE1
B0
NC
A0
A1
1
80
79
78
77
(3)
VTERM
V
2
3
4
(3)
VTERM
DC Input Voltage VIN
V
VAC
AC Input Voltage (pulse width ≤ 20ns)
DC Output Current
V
A2
A3
B1
IOUT
PMAX
TSTG
120
mA
W
B2
5
6
7
76
75
74
Maximum Power Dissipation (TA =70°C)
Storage Temperature
1.4
A4
B3
–65 to +150
°C
A5
B4
NOTE:
A6
8
73
72
71
70
B5
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.
A7
9
B6
GND
10
11
12
13
14
15
16
17
18
19
20
B7
VCC
NC
A8
2. Vcc terminals.
3. All terminals except Vcc.
OE2
B8
69
68
A9
A10
A11
67
66
65
64
63
B9
B10
A12
A13
B11
B12
CAPACITANCE
A14
B13
B14
B15
(TA = +25°C, f = 1.0MHZ, VIN = 0V, VOUT = 0V)
A15
62
61
Pins
Typ.
Max.(1)
Unit
pF
GND
Control Pins
3
7
4
8
60
VCC
NC
A16
A17
21
22
23
24
25
Quickswitch Channels (Switch OFF)
pF
OE3
B16
B17
B18
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
NOTE:
1. This parameter is measured at characterization but not tested.
A18
A19
A20
A21
A22
A23
GND
NC
26
27
B19
B20
28
29
30
B21
B22
PINDESCRIPTION
Pin Names
Description
B23
VCC
OEn
An
OutputEnable
Data I/Os
31
32
33
A24
A25
A26
A27
OE4
B24
B25
B26
B27
B28
B29
Bn
Data I/Os
34
35
36
37
38
39
40
FUNCTIONTABLE(1)
A28
A29
A30
A31
OEn
H
Outputs
Disconnected
An = Bn
43
42
L
B30
B31
GND
41
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
MILLIPAQ
TOP VIEW
2
IDTQS34X2245
HIGH-SPEEDCMOSQUICKSWITCH32-BITMULTIWIDTHBUSSWITCHES
INDUSTRIALTEMPERATURERANGE
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%
Symbol
VIH
Parameter
Input HIGH Level
Input LOW Level
Test Conditions
Guaranteed Logic HIGH for Control Pins
Guaranteed Logic LOW for Control Pins
Min.
2
Typ.(1)
—
Max.
—
Unit
V
VIL
—
—
0.8
±1
±1
35
V
IIN
Input LeakageCurrent (Control Inputs)(2) 0V ≤ VIN ≤ VCC
—
—
µA
µA
Ω
IOZ
Off-State Output Current (Hi-Z)
Switch ON Resistance
0V ≤ VOUT ≤ VCC, Switches OFF
—
—
(3)
RON
VCC = Min., VIN = 0V, ION = 30mA
VCC = Min., VIN = 2.4V, ION =15mA
VIN = VCC = 5V, IOUT = -5µA
18
23
18
25
40
VP
PassVoltage(2)
3.7
4
4.2
V
NOTES:
1. Typical values are at VCC = 5.0V, TA = 25°C.
2. Pass Voltage is guaranteed but not production tested.
3. ROUT changed on March 8, 2002. See rear page for more information.
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
80
RON
(ohms)
70
60
50
40
30
20
10
0
1.5
2.0
2.5
3.0
3.5
1.0
0.0
0.5
VIN
(Volts)
3
IDTQS34X2245
HIGH-SPEEDCMOSQUICKSWITCH32-BITMULTIWIDTHBUSSWITCHES
INDUSTRIALTEMPERATURERANGE
POWERSUPPLYCHARACTERISTICS
Symbol
ICCQ
Parameter
TestConditions(1)
VCC = Max., VIN = GND or Vcc, f = 0
VCC = Max., VIN = 3.4V, f = 0
Max.
12
Unit
µA
Quiescent Power Supply Current
Power Supply Current per Control Input HIGH (2)
Dynamic Power Supply Current per MHz(3)
∆ICC
1.5
mA
ICCD
VCC = Max., A and B pins open
0.25
mA/MHz
Control Inputs Toggling at 50% Duty Cycle
NOTES:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. Per TLL driven input (VIN = 3.4V, control inputs only). A and B pins do not contribute to ∆Icc.
3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant
AC or DC currents as they transition. This parameter is guaranteed but not production tested.
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE
TA = -40°C to +85°C, VCC = 5.0V ± 5%;
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
Symbol
tPLH
Parameter
Min.(1)
Typ.
Max.
Unit
DataPropagationDelay(1,2)
An to/from Bn
—
—
1.25
ns
tPHL
tPZL
SwitchTurn-onDelay
OE to An/Bn
SwitchTurn-offDelay(1)
0.5
0.5
—
—
6.6
5.2
ns
ns
tPZH
tPLZ
tPHZ
OE to An/Bn
NOTES:
1. Minimums are guaranteed but not production tested.
2. 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 1.25ns for 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
IDTQS34X2245
HIGH-SPEEDCMOSQUICKSWITCH32-BITMULTIWIDTHBUSSWITCHES
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
XX
IDTQS
XXXXXX
X
Package
Process
Device Type
Industrial (-40°C to +85°C)
Blank
Q3
80-pin Millipaq
Q3G
80-pin Millipaq - Green
34X2245
High-Speed CMOS Quickswitch
32-Bit Multiwidth Bus Switches
As per PCN L0201-02, the Output Resistance (RON) specifications have changed as of March 8, 2002. The original specifications were:
Parameter
Description
Min.
20
Typ.
28
Max.
40
Unit
RON
VCC = Min, VIN = 0V, ION = 30mA
VCC = Min, VIN = 2.4V, ION = 15mA
Ω
20
35
48
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
5
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