IDTQS32X2245Q28 [IDT]
Bus Driver, CBT/FST/QS/5C/B Series, 2-Func, 8-Bit, True Output, CMOS, PDSO40, QVSOP-40;
| 型号： | IDTQS32X2245Q28 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Driver, CBT/FST/QS/5C/B Series, 2-Func, 8-Bit, True Output, CMOS, PDSO40, QVSOP-40 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
IDTQS32X2245
HIGH-SPEED CMOS
QUICKSWITCH
DOUBLE-WIDTH BUS SWITCH
FEATURES:
DESCRIPTION:
• Enhanced N channel FET with no inherent diode to Vcc
• Dual '245 function
TheQS32X2245providesasetof16high-speedCMOSTTL-compatible
bus switches ina flow-throughpinout. The QS32X2245includes internal
25Ω resistors toreduce reflectionnoise inhighspeedapplications. The
OutputEnable(OEn)signals turntheswitches onsimilartotheOEnsignal
ofthe 74'245.
• 25Ω resistor for low noise
• Low propagation delay, zero ground bounce
• Undershoot clamp diodes on all switch and control inputs
• TTL-compatible control inputs
QuickSwitchdevices provide anorderofmagnitude fasterspeedthan
conventionallogicdevices.
• Available in 40-pin QVSOP package
The QS32X2245 is characterized for operation at -40°C to +85°C.
APPLICATIONS:
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Bus switching and isolation
• Power conservation
• Clock gating
• Logic replacement
FUNCTIONALBLOCKDIAGRAM
A0
A1 A2
A3
A4
A5
A6 A7
OE1
B0
A8
B1 B2
B3
B4
B5
B6 B7
A9 A10 A11 A12 A13 A14 A15
OE2
B8
B9 B10 B11 B12 B13 B14 B15
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 2002
1
c
2002 Integrated Device Technology, Inc.
DSC-5724/4
IDTQS32X2245
HIGH-SPEEDCMOSQUICKSWITCHDOUBLE-WIDTHBUSSWITCH
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
NC
A0
VCC
OE1
B0
1
2
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
(3)
VTERM
V
(3)
VTERM
DC Input Voltage VIN
V
VAC
AC Input Voltage (pulse width ≤ 20ns)
DC Output Current
V
A1
3
IOUT
PMAX
TSTG
120
mA
W
° C
A2
B1
4
Maximum Power Dissipation (TA = 85°C)
Storage Temperature
0.92
–65 to +150
A3
B2
5
NOTE:
A4
B3
6
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.
A5
B4
7
A6
B5
8
2. Vcc terminals.
3. All terminals except Vcc.
B6
A7
9
B7
GND
NC
A8
10
11
12
13
14
15
16
17
18
19
20
Vcc
OE2
B8
A9
CAPACITANCE
B9
A10
A11
A12
A13
A14
A15
GND
(TA = +25°C, f = 1.0MHZ, VIN = 0V, VOUT = 0V)
B10
B11
B12
B13
B14
B15
Pins
Typ.
3
Max.(1) Unit
Control Pins
5
7
pF
pF
Quickswitch Channels (Switch OFF)
5
24
23
22
21
NOTE:
1. This parameter is measured at characterization but not tested.
PINDESCRIPTION
Pin Names
OE1, OE2
An
I/O
I
Description
QVSOP
TOP VIEW
BusEnable
Bus A
I/O
I/O
Bn
Bus B
FUNCTIONTABLE(1)
OE1
OE2
A0 - A7
A8 - A15
Function
Disconnect
Connect
H
H
Z
Z
L
H
B0 - B7
Z
Z
H
L
B8 - B15
B8 - B15
Connect
L
L
B0 - B7
Connect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance
2
IDTQS32X2245
HIGH-SPEEDCMOSQUICKSWITCHDOUBLE-WIDTHBUSSWITCH
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.
—
0.8
1
Unit
V
VIL
—
—
—
18
—
V
(2)
IIN
Input LeakageCurrent (Control Inputs) 0V ≤ VIN ≤ VCC
0.01
0.01
23
µA
µA
Ω
IOZ
Off-State Output Current (Hi-Z)
Switch ON Resistance
0V ≤ VOUT ≤ VCC, Switches OFF
1
(3)
RON
VCC = Min., VIN = 0V, ION = 30mA
VCC = Min., VIN = 2.4V, ION =15mA
VIN = VCC = 5V, IOUT = -5μA
35
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
IDTQS32X2245
HIGH-SPEEDCMOSQUICKSWITCHDOUBLE-WIDTHBUSSWITCH
INDUSTRIALTEMPERATURERANGE
POWERSUPPLYCHARACTERISTICS
Symbol
ICCQ
Parameter
TestConditions(1)
VCC = Max., VIN = GND or Vcc, f = 0
VCC = Max., VIN = 3.4V, f = 0
Max.
6
Unit
μA
QuiescentPowerSupplyCurrent
Power Supply Current per Control Input HIGH (2)
Dynamic Power Supply Current per MHz(3)
ΔICC
1.5
0.25
mA
ICCD
VCC = Max., A and B pins open
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(2,3)
Anto/fromBn
—
—
1.25
ns
tPHL
tPZL
SwitchTurn-onDelay
OE to An/Bn
SwitchTurn-offDelay(2)
0.5
0.5
—
—
6.6
4.5
ns
ns
tPZH
tPLZ
tPHZ
OE to An/Bn
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 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
IDTQS32X2245
HIGH-SPEEDCMOSQUICKSWITCHDOUBLE-WIDTHBUSSWITCH
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
XX
IDTQS
XXXXX
X
Package
Process
Device Type
Industrial (-40°C to +85°C)
Blank
Q2
Q2G
40-Pin QVSOP
QVSOP - Green
High Speed CMOS QuickSwitch Double
Width Bus Switch
32X2245
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
6024 Silver Creek Valley Road
San Jose, CA 95138
for SALES:
800-345-7015 or 408-284-8200
fax: 408-284-2775
for Tech Support:
logichelp@idt.com
www.idt.com
5
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