QS3800QG [IDT]
Bus Driver, 3800 Series, 1-Func, 10-Bit, True Output, CMOS, PDSO24, QSOP-24;
| 型号： | QS3800QG |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Driver, 3800 Series, 1-Func, 10-Bit, True Output, CMOS, PDSO24, QSOP-24 驱动 光电二极管 逻辑集成电路 |
| 文件： | 总5页 (文件大小：53K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
IDTQS3800
HIGH-SPEED CMOS 10-BIT
QUICKSWITCH WITH
PRECHARGED OUTPUTS
DESCRIPTION:
FEATURES:
The QS3800 is a 10-bit high-speed CMOS bus switch controlled by a
single enable (ON) input. When ON is low, the switch is on and port A is
connectedtoportB. WhenON is high,the switchbetweenportAandport
BisopenandportBisprechargedtothebiasvoltage. ThelowONresistance
(5Ω)oftheQS3800allowsinputstobeconnectedtooutputswithoutadding
propagationdelayandwithoutgeneratingadditionalnoise. The QS3800
alsoprechargestheBporttoauser-selectablebiasvoltagetominimizelive
insertionnoise,whichis usefulinVMEbus applications.
• 5Ω bidirectional switches connect inputs to outputs
• Zero propagation delay, zero ground bounce
• Undershoot clamp diodes on all switch and control inputs
• Outputs precharge voltage to minimize signal distortion
during live insertion
• TTL-compatible input and output levels
• Available in QSOP package
The QS3800 is characterized for operation at -40°C to +85°C.
FUNCTIONALBLOCKDIAGRAM
VBIAS
A0
B0
A9
B9
ON
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
JANUARY 2004
1
c
2004 Integrated Device Technology, Inc.
DSC-5766/4
IDTQS3800
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOS10-BITQUICKSWITCHWITHPRECHARGEDOUTPUTS
PINCONFIGURATION
ABSOLUTEMAXIMUMRATINGS(1)
Symbol
Description
Supply Voltage to Ground
Bias Voltage Range
Max
–0.5 to +7
–0.5 to VCC
–0.5 to VCC+0.5
–3
Unit
V
(2)
VTERM
1
2
3
4
5
6
7
24
23
22
21
20
19
18
Vcc
ON
A0
A1
A2
A3
A4
A5
A6
A7
A8
VBIAS
V
(3)
B0
B1
B2
B3
B4
B5
B6
B7
B8
VTERM
DC Input Voltage VIN
V
VAC
AC Input Voltage (pulse width ≤20ns)
DC Output Current
V
IOUT
120
mA
mA
W
Input Clamp Current
–50
PMAX
TSTG
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.
8
9
17
16
2. VCC terminals.
3. All terminals except VCC .
10
11
12
15
14
13
A9
B9
CAPACITANCE (TA = +25°C, f = 1MHz, VIN = 0V, VOUT = 0V)
GND
VBIAS
Pins
Typ.
Max.(1)
Unit
ControlInputs
3
5
7
pF
QSOP
TOP VIEW
Quickswitch Channels (Switch OFF)
5
pF
NOTE:
1. This parameter is guaranteed but not production tested.
PINDESCRIPTION
Pin Names
A0 - A9
B0 - B9
ON
I/O
I/O
I/O
I
Description
Bus A
Bus B
Bus Switch Enable
Bias Voltage
VBIAS
I
FUNCTIONTABLE(1)
ON
B0 - B9
A0 - A9
VBIAS
Function
Connect
Disconnect
L
H
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
2
IDTQS3800
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOS10-BITQUICKSWITCHWITHPRECHARGEDOUTPUTS
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = –40°C to +85°C, VCC = 5V ± 10%
Symbol
VIH
Parameter
Input HIGH Voltage
Test Conditions
GuaranteedLogicHIGHforControlPins
GuaranteedLogicLOWforControlPins
VCC = 5V
Min.
2
Typ.(1) Max.
Unit
V
—
—
—
—
—
—
5
—
0.8
VCC
—
±1
±1
7
VIL
InputLOWVoltage
—
1.3
0.25
—
—
—
—
V
VBIAS
IO
BiasVoltage
V
BiasCurrent
VCC = 4.5V, VBIAS = 2.4V, VO = 0, ON = HIGH
0V ≤ VIN ≤ VCC
mA
µA
µA
Ω
IIN
InputLeakageCurrent(ControlInputs)
Off-StateCurrent(Hi-Z)
Switch ON Resistance
IOZ
0V ≤ VOUT ≤ VCC
RON
VCC = Min., VIN = 0V, ION = 30mA
VCC = Min., VIN = 2.4V, ION = 15mA
10
15
NOTE:
1. Typical values are at VCC = 5V and TA = 25°C.
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
IDTQS3800
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOS10-BITQUICKSWITCHWITHPRECHARGEDOUTPUTS
POWERSUPPLYCHARACTERISTICS
Symbol
ICCQ
Parameter
TestConditions(1)
Typ.(2)
0.2
Max.
3
Unit
μA
QuiescentPowerSupplyCurrent
VCC = Max., VIN = GND or VCC, f = 0
VCC = Max., VIN = 3.4V, f = 0
(3)
ΔICC
Power Supply Current per Input HIGH
⎯
2.5
0.25
mA
ICCD
Dynamic Power Supply Current per MHz(4)
VCC = Max., A and B Pins Open, Data Inputs = GND,
Control Input Toggling @ 50% Duty Cycle
⎯
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 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 = 5V ± 10%
CLOAD =50pF, RLOAD =500Ω unless otherwise noted.
(1)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
(1,2)
tPLH
tPHL
DataPropagationDelay
A to B, B to A
⎯
0.25
⎯
ns
tPZL
tPZH
SwitchTurn-OnDelay
VBIAS = 3V
1.5
1.5
⎯
⎯
7.5
6.5
ns
ns
ON to A or B
VBIAS = GND
(1)
tPLZ
tPHZ
SwitchTurn-OffDelay
VBIAS = 3V
ON to A or B
VBIAS = GND
NOTES:
1. This parameter is 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 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
IDTQS3800
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOS10-BITQUICKSWITCHWITHPRECHARGEDOUTPUTS
ORDERINGINFORMATION
XX
IDTQS
XXXXX
Package
Device Type
Q
Quarter Size Outline Package
QG
QSOP - Green
High Speed CMOS 10-Bit QuickSwitch
with Precharged Outputs
3800
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fax: 408-284-2775
www.idt.com
logichelp@idt.com
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