IDTQS3244SO8 [IDT]
Bus Driver, 3244 Series, 2-Func, 4-Bit, True Output, CMOS, PDSO20, SOIC-20;
| 型号： | IDTQS3244SO8 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Driver, 3244 Series, 2-Func, 4-Bit, True Output, CMOS, PDSO20, SOIC-20 驱动 光电二极管 逻辑集成电路 |
| 文件： | 总5页 (文件大小：54K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS
QUICKSWITCH
8-BIT BUS SWITCH
IDTQS3244
FEATURES:
DESCRIPTION:
• Enhanced N channel FET with no inherent diode to Vcc
• 5Ω bidirectional switches connect inputs to outputs
• Pin compatible with 74F244, 74FCT244, and 74FCT244T
• Zero propagation delay, zero ground bounce
TheQS3244provides asetofeighthigh-speedCMOSTTL-compatible
bus switches ina pinoutcompatible with74FCT244,74F244,74ALS/AS/
LS2448-bitdrivers.The lowONresistance (5Ω)ofthe 3244allows inputs
tobe connectedtooutputs withoutaddingpropagationdelayandwithout
generatingadditionalgroundbounce noise.The twoenable (xG)signals
turnthe switches onsimilartothe xG signals ofthe 74’244.
• Undershoot clamp diodes on all switch and control inputs
• Available in QSOP, SOIC, and TSSOP packages
QuickSwitchdevices provide anorderofmagnitude fasterspeedthan
conventionallogicdevices.
The QS3244 is characterized for operation at -40°C to +85°C.
APPLICATIONS:
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Power conservation
• Capacitance reduction and isolation
• Logic replacement (data processing)
• Clock gating
• Bus switching and isolation
FUNCTIONALBLOCKDIAGRAM
1G
2G
1A1
1A2
1A3
1A4
1Y1
1Y2
1Y3
1Y4
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
JUNE 2006
1
c
2006 Integrated Device Technology, Inc.
DSC-5722/8
IDTQS3244
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOSQUICKSWITCH8-BITBUSSWITCH
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
(3)
VTERM
V
(3)
1
2
20
19
18
17
16
15
14
13
12
11
VCC
2G
1G
VTERM
DC Input Voltage VIN
V
VAC
IOUT
AC Input Voltage (pulse width ≤20ns)
DC Output Current
V
1A1
120
mA
W
° C
1Y1
2A4
1Y2
2A3
1Y3
2A2
3
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
PMAX
TSTG
Maximum Power Dissipation (TA = 85°C)
Storage Temperature
0.5
–65 to +150
4
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.
5
6
2. VCC terminals.
3. All terminals except VCC .
7
8
9
1Y4
2A1
CAPACITANCE (TA = +25°C, f = 1MHz, VIN = 0V, VOUT = 0V)
10
Pins
Typ.
Max.(1)
Unit
ControlInputs
3
5
7
pF
Quickswitch Channels (Switch OFF)
5
pF
QSOP/ SOIC/ TSSOP
TOP VIEW
NOTE:
1. This parameter is guaranteed but not production tested.
PINDESCRIPTION
Pin Names
Description
1G, 2G
OutputEnable
Data I/Os
Ax, Yx
FUNCTIONTABLE(1)
1G
H
L
2G
H
H
L
1A, 1Y I/Os
Disconnected
1Ax = 1Yx
Disconnected
1Ax = 1Yx
2A, 2Y I/Os
Disconnected
Disconnected
2Ax = 2Yx
2Ax = 2Yx
H
L
L
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
2
IDTQS3244
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOSQUICKSWITCH8-BITBUSSWITCH
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = –40°C to +85°C, VCC = 5V ± 5%
Symbol
VIH
Parameter
Input HIGH Voltage
Test Conditions
GuaranteedLogicHIGHforControlInputs
GuaranteedLogicLOWforControlInputs
0V ≤ VIN ≤ VCC
Min.
2
Typ.(1) Max.
Unit
V
—
—
—
—
5
—
0.8
±1
±1
7
VIL
InputLOWVoltage
—
—
—
—
—
3.7
V
IIN
InputLeakageCurrent(ControlInputs)
Off-StateCurrent(Hi-Z)
µA
µ A
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
Switch ON Resistance
10
4
12
VP
PassVoltage(2)
4.2
V
NOTES:
1. Typical values are at VCC = 5V and TA = 25°C.
2. 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
1.5
2.0
2.5
3.0
3.5
1.0
0.0
0.5
VIN
(Volts)
3
IDTQS3244
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOSQUICKSWITCH8-BITBUSSWITCH
POWERSUPPLYCHARACTERISTICS
Symbol
ICCQ
Parameter
TestConditions(1)
VCC = Max., VIN = GND or VCC, f = 0
Max.
3
Unit
µ A
QuiescentPowerSupplyCurrent
(2)
ΔICC
Power Supply Current per Control Input HIGH
Dynamic Power Supply Current per MHz(3)
VCC = Max., VIN = 3.4V, f = 0
2.5
0.25
mA
ICCD
VCC = Max., A and Y Pins Open, Control Inputs 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. Per TTL-driven input (VIN = 3.4V, control inputs only). A and Y 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 Y 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 ± 5%
CLOAD =50pF, RLOAD =500Ωunless otherwise noted.
(1)
Symbol
Parameter
Min.
Typ.
Max.
Unit
(2)
tPLH
tPHL
DataPropagationDelay
Ax to Yx
⎯
⎯
0.25(3)
ns
tPZL
tPZH
SwitchTurn-OnDelay
0.5
0.5
⎯
⎯
5.6
5.2
ns
ns
1G, 2G to Yx
(2)
tPLZ
tPHZ
SwitchTurn-OffDelay
1G, 2G to Yx
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 0.25ns 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
IDTQS3244
INDUSTRIALTEMPERATURERANGE
HIGH-SPEEDCMOSQUICKSWITCH8-BITBUSSWITCH
ORDERINGINFORMATION
XX
IDTQS
XXXXX
Package
Device Type
Q
Quarter Size Outline Package
QG
SO
SOG
PAG
QSOP - Green
Small Outline IC
SOIC - Green
TSSOP - Green
3244
High Speed CMOS Quickswitch 8-Bit Bus Switch
CORPORATE HEADQUARTERS
6024 Silver Creek Valley Road
San Jose, CA 95138
for SALES:
800-345-7015 or 408-284-8200
fax: 408-284-2775
www.idt.com
for Tech Support:
logichelp@idt.com
5
相关型号：
©2020 ICPDF网 联系我们和版权申明