IDTQS3R861SO8 [IDT]
Bus Driver, CBT/FST/QS/5C/B Series, 1-Func, 10-Bit, True Output, CMOS, PDSO24, SOIC-24;
| 型号： | IDTQS3R861SO8 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Driver, CBT/FST/QS/5C/B Series, 1-Func, 10-Bit, True Output, CMOS, PDSO24, SOIC-24 驱动 光电二极管 逻辑集成电路 |
| 文件： | 总5页 (文件大小：42K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
IDTQS3R861
HIGH-SPEED CMOS 10-BIT LOW
RESISTANCE BUS SWITCH WITH
FLOW-THROUGH PINOUT
DESCRIPTION:
FEATURES:
TheQS3R861providesasetoftenhigh-speedCMOSTTL-compatible
bus switches. The very low ON resistance (2.5Ω) of the QS3R861 allows
inputs to be connected without adding propagation delay and without
generating additional ground bounce noise. The Bus Enable (BE) signal
turns the switches on.
• Enhanced N channel FET with no inherent diode to Vcc
• 2.5Ω bidirectional switches connect inputs to outputs
• Zero propagation delay, zero ground bounce
• Undershoot clamp diodes on all switch and control inputs
• Available in SOIC and QSOP packages
The low ON resistance of the QS3R861 makes it ideal for PCI hot-
plugging or hot-swapping applications.
The QS3R861 is characterized for operation at -40°C to +85°C.
APPLICATIONS:
• Hot-swapping, hot-docking (low resistance for PCI and
Compact PCI applications)
• Voltage translation (5V to 3.3V)
• Power Conservation
• Capacitance reduction and isloation
• Bus Isolation
• Clock Gating
FUNCTIONALBLOCKDIAGRAM
A0
A9
B0
B9
BE
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
NOVEMBER 1999
1
c
1999 Integrated Device Technology, Inc.
DSC-5543/2
IDTQS3R861
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOS10-BITLOWRESISTANCEBUSSWITCH
PINCONFIGURATION
ABSOLUTEMAXIMUMRATINGS(1)
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
1
2
3
4
5
6
7
24
23
22
21
20
19
18
Vcc
NC
A0
A1
A2
A3
A4
A5
A6
A7
A8
(3)
VTERM
V
(3)
BE
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
VTERM
DC Input Voltage VIN
V
VAC
AC Input Voltage (pulse width ≤20ns)
DC Output Current
V
IOUT
PMAX
TSTG
120
mA
W
Maximum Power Dissipation
Storage Temperature
0.5
–65 to +150
°C
NOTES:
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.
2. VCC terminals.
3. All terminals except VCC .
8
9
17
16
10
11
12
15
14
13
A9
CAPACITANCE (TA = +25°C, f = 1MHz, VIN = 0V, VOUT = 0V)
Pins
Typ.
Max.(1)
Unit
GND
ControlInputs
3
5
4
6
pF
Quickswitch Channels (Switch OFF)
pF
SOIC/ QSOP
TOP VIEW
NOTE:
1. This parameter is guaranteed but not production tested.
PINDESCRIPTION
Pin Names
A0 - A9
B0 - B9
BE
Description
Bus A
Bus B
Bus Switch Enable
FUNCTIONTABLE(1)
BE
A0 - A9
Function
H
Z
Disconnect
Connect
L
B0 - B9
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance
2
IDTQS3R861
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOS10-BITLOWRESISTANCEBUSSWITCH
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = –40°C to +85°C, VCC = 5V ± 10%
Symbol
VIH
Parameter
Input HIGH Voltage
Test Conditions
Guaranteed Logic HIGH for Control Pins
GuaranteedLogicLOWforControlPins
0V ≤ VIN ≤ VCC
Min.
2
Typ.(1) Max.
Unit
V
—
—
—
0.8
±1
±1
5
VIL
InputLOWVoltage
—
V
IIN
InputLeakageCurrent(ControlInputs)
Off-StateCurrent(Hi-Z)
SwitchONResistance(2)
—
0.01
0.01
2.5
4
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
—
RON
—
—
8.5
4.3
VP
PassVoltage(3)
3.7
4
V
NOTES:
1. Typical values are at VCC = 5V and TA = 25°C.
2. Max value of RON is guaranteed but not production tested.
3. Pass voltage is guaranteed but not production tested.
IN
CC
TYPICAL ON RESISTANCE vs V AT V = 5V
16
14
RON
(ohms)
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
VIN
(Volts)
3
IDTQS3R861
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOS10-BITLOWRESISTANCEBUSSWITCH
POWERSUPPLYCHARACTERISTICS
Symbol
ICCQ
Parameter
TestConditions(1)
VCC = Max., VIN = GND or VCC, f = 0
VCC = Max., VIN = 3.4V, f = 0
Typ.(2)
0.2
Max.
3
Unit
µA
Quiescent Power Supply Current
Power Supply Current per Input HIGH(3)
Dynamic Power Supply Current per MHz(4)
∆ICC
2.5
mA
ICCD
VCC = Max., A and B Pins Open,
BE Input Toggling @ 50% Duty Cycle
0.25
mA/MHz
NOTES:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. Typical values are at VCC = 5V and TA = 25°C.
3. Per TTL-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 = 5V ± 10%
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
(1)
Symbol
Parameter
Min.
Typ.
Max.
Unit
tPLH
tPHL
DataPropagationDelay(2)
A to B, B to A
0.12(3)
ns
tPZL
tPZH
SwitchTurn-OnDelay
BE to A or B
SwitchTurn-OffDelay(2)
BE to A or B
1.5
1.5
5.6
4.5
ns
ns
tPLZ
tPHZ
NOTES:
1. Minimums are guaranteed but not production tested.
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 0.12ns 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
IDTQS3R861
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOS10-BITLOWRESISTANCEBUSSWITCH
ORDERINGINFORMATION
XX
IDTQS
XXXXX
X
Package
Process
Device Type
Industrial (-40°C to +85°C)
Blank
Small Outline IC
Quarter Size Outline Package
QSOP - Green
SO
Q
QG
High Speed CMOS 10-Bit Low Resistance Bus Switch
with Flow-Through Pinout
3R861
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for Tech Support:
logichelp@idt.com
(408) 654-6459
www.idt.com
5
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