IDTQS34X245Q3G8 [IDT]
Bus Driver, 4-Func, 8-Bit, True Output, CMOS, PDSO80, MILLIPAK-80;
| 型号： | IDTQS34X245Q3G8 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Driver, 4-Func, 8-Bit, True Output, CMOS, PDSO80, MILLIPAK-80 驱动 光电二极管 逻辑集成电路 |
| 文件： | 总5页 (文件大小：213K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
IDTQS34X245
HIGH-SPEED CMOS
QUICKSWITCH 32-BIT
MULTIWIDTH™ BUS SWITCHES
DESCRIPTION:
FEATURES:
The QS34X245 is a member of the MultiWidthTM family of QuickSwitch
devicesandprovidesasetof32high-speedCMOScompatiblebusswitches
in a flow-through pinout. This device is available in the MilliPaQ package,
the world's first small outline 32-bit solution. The low ON-resistance of the
QS34X245allowsinputstobeconnectedtooutputswithoutaddingpropa-
gationdelayandwithoutgeneratingadditionalgroundbouncenoise. When
Output Enable (OEn) is low, the switches are turned on, connecting bus A
tobusB. WhenOEnishigh,theswitchesareturnedoff.Thisdeviceisideally
suited for 32/64 bit applications where board space is at a premium.
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
• QS34X245 is 32-bit version of QS3245
• 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 QS34X245 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
OE
3
OE
1
B
2
B
3
B
4
B
5
B
6
B
7
B
16
B
17
B
18
B
19
B
20
B
21
B
22
B
23
B
0
8
B1
A12
A
A9
A10
A11
A13
A14
A24
A25
A26
A27
A28
A29
A30
A31
A15
OE
4
OE
2
B8
B9 B10
B11
B12
B13
B14
B15
B24
B25
B26
B27
B28
B29
B30
B31
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
AUGUST 2012
1
c
2012 Integrated Device Technology, Inc.
DSC-5481/5
IDTQS34X245
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
VCC
OE1
B0
NC
A0
A1
1
80
79
78
77
76
(2)
VTERM
(3)
2
3
4
5
VTERM
V
(3)
VTERM
DC Input Voltage VIN
V
A2
A3
B1
VAC
AC Input Voltage (pulse width ≤ 20ns)
DC Output Current
V
IOUT
PMAX
TSTG
120
mA
W
B2
Maximum Power Dissipation (TA =70°C)
Storage Temperature
1.4
A4
B3
6
7
75
74
–65 to +150
°C
A5
B4
NOTE:
A6
8
9
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
B6
GND
10
11
12
B7
VCC
NC
A8
2. Vcc terminals.
3. All terminals except Vcc.
OE2
B8
69
68
A9
13
14
A10
67
66
65
64
63
B9
A11
A12
A13
A14
A15
GND
15
16
B10
B11
B12
17
18
19
20
B13
B14
B15
CAPACITANCE
62
61
(TA = +25°C, f = 1.0MHZ, VIN = 0V, VOUT = 0V)
Pins
Typ.
Max.(1)
Unit
pF
VCC
60
NC
A16
A17
21
22
23
24
25
Control Pins
3
7
4
8
OE3
Quickswitch Channels (Switch OFF)
pF
59
58
57
56
55
54
B16
B17
B18
NOTE:
A18
A19
1. This parameter is measured at characterization but not tested.
A20
A21
A22
A23
GND
NC
26
27
B19
B20
28
29
30
B21
B22
53
52
51
50
49
48
47
46
45
44
PINDESCRIPTION
B23
Pin Names
Description
31
32
VCC
OEn
An
OutputEnable
Data I/Os
A24
A25
A26
A27
OE4
B24
B25
B26
B27
B28
B29
33
34
Bn
Data I/Os
35
36
A28
A29
A30
A31
FUNCTIONTABLE(1)
37
38
39
40
OEn
H
Function
43
42
Disconnected
An = Bn
B30
B31
L
GND
41
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
MILLIPAQ
TOP VIEW
2
IDTQS34X245
HIGH-SPEEDCMOSQUICKSWITCH32-BITMULTIWIDTHBUSSWITCHES
INDUSTRIALTEMPERATURERANGE
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%
Symbol
VIH
Parameter
Input HIGH Level
Test Conditions
Guaranteed Logic HIGH for Control Pins
Guaranteed Logic LOW for Control Pins
0V ≤ VIN ≤ VCC
Min.
2
Typ.(1)
—
Max.
—
0.8
1
Unit
V
VIL
Input LOW Level
—
—
V
IIN
Input LeakageCurrent (Control Inputs)
Off-State Current (Hi-Z)
Switch ON Resistance
—
—
μA
μA
Ω
IOZ
0V ≤ VOUT ≤ VCC, Switches OFF
VCC = Min., VIN = 0V, ION = 30mA
VCC = Min., VIN = 2.4V, ION =15mA
VIN = VCC = 5V, IOUT = -5μA
—
—
1
RON
—
5
7
—
10
15
4.2
VP
PassVoltage(2)
3.7
4
V
NOTES:
1. Typical values are at VCC = 5.0V, TA = 25°C.
2. Pass Voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
16
RON
(ohms)
14
12
10
8
6
4
2
0
0.0
1.5
2.0
2.5
3.0
3.5
1.0
0.5
VIN
(Volts)
3
IDTQS34X245
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)
ΔICC
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 ΔIcc.
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
—
—
0.25
ns
tPHL
tPZL
SwitchTurn-onDelay
OE to An/Bn
SwitchTurn-offDelay(1)
0.5
0.5
—
—
5.6
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 0.25ns 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
IDTQS34X245
HIGH-SPEEDCMOSQUICKSWITCH32-BITMULTIWIDTHBUSSWITCHES
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
XX
QS
XXXXXX
X
X
Package
Process
Device Type
Blank
8
Tube or Tray
Tape and Reel
Industrial (-40°C to +85°C)
80-pin Millipaq - Green
Blank
Q3G
34X245
High-Speed CMOS Quickswitch 32-Bit Multiwidth Bus Switches
DatasheetDocumentHistory
10/14/08
08/15/12
Pg. 5
Pg. 5
Updatedtheorderinginformationbyremovingthe"IDT"notation.
Updated the ordering information by removing non RoHS part and by adding Tape and Reel information.
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fax: 408-284-2775
www.idt.com
5
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