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IDTQS3VH2245PA8 [IDT]

Bus Driver, CB3Q/3VH/3C/2B Series, 1-Func, 8-Bit, True Output, PDSO20, TSSOP-20;
IDTQS3VH2245PA8
型号： IDTQS3VH2245PA8
厂家： INTEGRATED DEVICE TECHNOLOGY    INTEGRATED DEVICE TECHNOLOGY
描述：

Bus Driver, CB3Q/3VH/3C/2B Series, 1-Func, 8-Bit, True Output, PDSO20, TSSOP-20

驱动 光电二极管 逻辑集成电路
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QUICKSWITCH® PRODUCTS  
2.5V / 3.3V 8-BIT HIGH  
BANDWIDTH BUS SWITCH  
IDTQS3VH2245  
FEATURES:  
DESCRIPTION:  
• N channel FET switches with no parasitic diode to VCC  
– Isolationunderpower-offconditions  
– No DC path to VCC or GND  
TheQS3VH2245isahighbandwidth8-bitbusswitch. TheQS3VH2245,  
with25ΩONresistanceand1.35nspropagationdelay,isidealforlinematching  
andlownoiseenvironments. TheswitchescanbeturnedONunderthecontrol  
oftheLVTTL-compatibleOutputEnable signalforbidirectionaldataflowwith  
no added delay or ground bounce. In the ON state, the switches can pass  
signalsupto5V. IntheOFFstate,theswitchesofferveryhighimpedenceat  
theterminals.  
– 5V tolerant in OFF and ON state  
• 5V tolerant I/Os  
• Flat RON characteristics over operating range  
• Rail-to-rail switching 0 - 5V  
• Bidirectional dataflow with near-zero delay: no added ground  
bounce  
• Excellent RON matching between channels  
• VCC operation: 2.3V to 3.6V  
The combination of small propagation delay, high OFF impedance, and  
over-voltage tolerance makes the QS3VH2245 ideal for high performance  
communicationapplications.  
TheQS3VH2245is characterizedforoperationfrom-40°Cto+85°C.  
• High bandwidth  
• LVTTL-compatible control Inputs  
• Undershoot Clamp Diodes on all switch and control Inputs  
• Low I/O capacitance, 4pF typical  
• 25Ω resistors for low noise and line matching  
• Available in QSOP and TSSOP packages  
APPLICATIONS:  
• Hot-swapping  
• Low distortion analog switch  
• Replaces mechanical relay  
• ATM 25/155 switching  
FUNCTIONALBLOCKDIAGRAM  
A0  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
OE  
B0  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.  
INDUSTRIAL TEMPERATURE RANGE  
MARCH 2003  
1
c
2003 Integrated Device Technology, Inc.  
DSC-5591/7  
IDTQS3VH2245  
2.5V/3.3V8-BITHIGHBANDWIDTHBUSSWITCH  
INDUSTRIALTEMPERATURERANGE  
ABSOLUTEMAXIMUMRATINGS(1)  
PINCONFIGURATION  
Symbol  
Description  
SupplyVoltage to Ground  
Max  
–0.5 to +4.6  
–0.5 to +5.5  
–0.5 to +5.5  
–3  
Unit  
V
(2)  
VTERM  
(3)  
VTERM  
DC Switch Voltage VS  
V
(3)  
VTERM  
DC Input Voltage VIN  
V
VCC  
OE  
B0  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
NC  
1
2
3
20  
19  
18  
17  
VAC  
IOUT  
AC Input Voltage (pulse width ≤20ns)  
DC Output Current (max. sink current/pin)  
Storage Temperature  
V
A0  
A1  
A2  
120  
mA  
° C  
TSTG  
–65 to +150  
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.  
4
5
A3  
A4  
16  
15  
14  
13  
12  
11  
6
2. VCC terminals.  
3. All terminals except VCC .  
A5  
7
8
A6  
9
A7  
CAPACITANCE (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = 0V)  
Parameter(1)  
Typ.  
Max. Unit  
10  
GND  
Symbol  
CIN  
Control Inputs  
3
4
8
5
6
pF  
pF  
pF  
CI/O  
Quickswitch Channels (Switch OFF)  
Quickswitch Channels (Switch ON)  
CI/O  
12  
QSOP/ TSSOP  
TOP VIEW  
NOTE:  
1. This parameter is guaranteed but not production tested.  
PINDESCRIPTION  
Pin Names  
Description  
OE  
Ax  
Bx  
Output Enable  
Data I/Os  
Data I/Os  
FUNCTIONTABLE(1)  
OE  
Function  
H
L
Disconnected  
Connect (Ax = Bx)  
NOTE:  
1. H = HIGH Voltage Level  
L = LOW Voltage Level  
2
IDTQS3VH2245  
2.5V/3.3V8-BITHIGHBANDWIDTHBUSSWITCH  
INDUSTRIALTEMPERATURERANGE  
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE  
FollowingConditionsApplyUnlessOtherwiseSpecified:  
Industrial: TA = –40°C to +85°C, VCC = 3.3V ±0.3V  
Symbol  
Parameter  
Input HIGH Voltage  
Test Conditions  
Min.  
1.7  
2
Typ.(1) Max.  
Unit  
VIH  
GuaranteedLogicHIGH  
VCC = 2.3V to 2.7V  
VCC = 2.7V to 3.6V  
VCC = 2.3V to 2.7V  
VCC = 2.7V to 3.6V  
—
—
—
—
—
—
—
27  
28  
25  
26  
—
—
0.7  
0.8  
±1  
±1  
±1  
39  
V
forControlInputs  
GuaranteedLogicLOW  
forControlInputs  
0V ≤ VIN ≤ VCC  
VIL  
InputLOWVoltage  
—
—
—
—
—
18  
V
IIN  
IOZ  
InputLeakageCurrent(ControlInputs)  
Off-StateCurrent(Hi-Z)  
µA  
µ A  
µ A  
0V ≤ VOUT ≤ 5V, Switches OFF  
VIN or VOUT 0V to 5V, VCC = 0V  
VCC = 2.3V  
IOFF  
DataInput/OutputPowerOffLeakage  
VIN = 0V  
VIN = 1.7V  
VIN = 0V  
VIN = 2.4V  
ION = 30mA  
ION = 15mA  
ION = 30mA  
ION = 15mA  
RON  
Switch ON Resistance  
Typical at VCC = 2.5V  
VCC = 3V  
18  
41  
Ω
18  
38  
18  
40  
NOTE:  
1. Typical values are at VCC = 3.3V and TA = 25°C.  
IN  
CC  
TYPICAL ON RESISTANCE vs V AT V = 3.3V  
40  
35  
RON  
(ohms)  
30  
25  
20  
15  
10  
5
0
5
3
3.5  
4
4.5  
0
0.5  
1
1.5  
2
2.5  
VIN  
(Volts)  
3
IDTQS3VH2245  
2.5V/3.3V8-BITHIGHBANDWIDTHBUSSWITCH  
INDUSTRIALTEMPERATURERANGE  
POWERSUPPLYCHARACTERISTICS  
Symbol  
ICCQ  
Parameter  
TestConditions(1)  
Min.  
—
Typ.  
1
Max.  
3
Unit  
mA  
µ A  
QuiescentPowerSupplyCurrent  
Power Supply Current (2,3) per Input HIGH  
Dynamic Power Supply Current(4)  
VCC = Max., VIN = GND or VCC, f = 0  
VCC = Max., VIN = 3V, f = 0 per Control Input  
ΔICC  
—
—
30  
ICCD  
VCC = 3.3V, A and B Pins Open, Control Inputs See Typical ICCD vs Enable Frequency graph below  
Toggling @ 50% Duty Cycle  
NOTES:  
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.  
2. Per input driven at the specified level. A and B pins do not contribute to ΔIcc.  
3. This parameter is guaranteed but not tested.  
4. This parameter represents the current required to switch internal capacitance at the specified frequency. The A and B inputs do not contribute to the Dynamic Power Supply  
Current. This parameter is guaranteed but not production tested.  
CCD  
CC  
TYPICAL I  
vs ENABLE FREQUENCY CURVE AT V = 3.3V  
12  
10  
8
6
4
2
0
0
2
4
6
8
10  
12  
14  
16  
18  
20  
ENABLE FREQUENCY (MHz)  
4
IDTQS3VH2245  
2.5V/3.3V8-BITHIGHBANDWIDTHBUSSWITCH  
INDUSTRIALTEMPERATURERANGE  
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE  
TA = -40°C to +85°C  
VCC = 2.5 ± 0.2V (1)  
VCC = 3.3 ± 0.3V (1)  
(4)  
(4)  
Symbol  
tPLH  
Parameter  
Min.  
Max.  
Min.  
Max.  
Unit  
(2,3)  
DataPropagationDelay  
Ax to/from Bx  
SwitchTurn-OnDelay  
OE to Ax/Bx  
⎯
1.5  
1.5  
0.9  
⎯
1.35  
ns  
tPHL  
tPZL  
9
1.5  
1.5  
8
ns  
ns  
tPZH  
tPLZ  
SwitchTurn-OffDelay  
7.5  
7.5  
tPHZ  
OE to Ax/Bx  
fOE  
OperatingFrequency-Enable,Select(2,5)  
⎯
10  
⎯
20  
MHz  
NOTES:  
1. See Test Conditions under TEST CIRCUITS AND WAVEFORMS.  
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 1.35ns 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. Minimums are guaranteed but not production tested.  
5. Maximum toggle frequency for OE control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).  
5
IDTQS3VH2245  
2.5V/3.3V8-BITHIGHBANDWIDTHBUSSWITCH  
INDUSTRIALTEMPERATURERANGE  
SOMEAPPLICATIONSFORHOTSWITCHPRODUCTS  
NFET  
0 to +5V  
0 to +5V  
+6.5V  
Vcc = 3.3V  
CHARGE PUMP  
OE  
DRIVER  
SINGLE HOT  
SWITCH  
Rail-to-Rail Switching  
ZERO DOWN TIME SYSTEM  
PLUGGABLE CARD/ LIVE SYSTEM  
ON CARD  
LOGIC  
CARD I/O  
CPU  
ON CARD  
LOGIC  
CARD I/O  
RAM  
BUS  
Hot-Swapping  
6
IDTQS3VH2245  
2.5V/3.3V8-BITHIGHBANDWIDTHBUSSWITCH  
INDUSTRIALTEMPERATURERANGE  
TESTCIRCUITSANDWAVEFORMS  
TESTCONDITIONS  
VIH  
VT  
0V  
SAME PHASE  
INPUT TRANSITION  
(1)  
(2)  
Symbol  
VLOAD  
VIH  
VCC = 3.3V ± 0.3V  
VCC = 2.5V ± 0.2V  
Unit  
tPHL  
tPHL  
tPLH  
tPLH  
6
3
2 x Vcc  
Vcc  
V
VOH  
VT  
VOL  
OUTPUT  
V
VT  
1.5  
300  
300  
50  
VCC/2  
150  
V
VIH  
VT  
0V  
OPPOSITE PHASE  
INPUT TRANSITION  
VLZ  
mV  
mV  
pF  
VHZ  
150  
CL  
30  
Propagation Delay  
VLOAD  
Open  
GND  
VCC  
DISABLE  
ENABLE  
VIH  
VT  
0V  
CONTROL  
INPUT  
500Ω  
tPZL  
tPLZ  
VIN  
VOUT  
(1, 2)  
Pulse  
VLOAD/2  
VT  
D.U.T.  
VLOAD/2  
VOL + VLZ  
VOL  
OUTPUT  
NORMALLY  
LOW  
Generator  
SWITCH  
CLOSED  
500Ω  
tPHZ  
RT  
tPZH  
CL  
VOH  
VOH -VHZ  
OUTPUT  
NORMALLY  
HIGH  
SWITCH  
OPEN  
VT  
0V  
0V  
Test Circuits for All Outputs  
NOTE:  
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.  
Enable and Disable Times  
DEFINITIONS:  
CL = Load capacitance: includes jig and probe capacitance.  
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.  
NOTES:  
1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.  
2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.  
SWITCHPOSITION  
Test  
tPLZ/tPZL  
tPHZ/tPZH  
tPD  
Switch  
VLOAD  
GND  
Open  
7
IDTQS3VH2245  
2.5V/3.3V8-BITHIGHBANDWIDTHBUSSWITCH  
INDUSTRIALTEMPERATURERANGE  
ORDERINGINFORMATION  
IDTQS  
XXXXX  
XX  
Package  
Device Type  
Quarter Size Outline Package  
QSOP - Green  
Thin Shrink Small Outline Package  
TSSOP - Green  
Q
QG  
PA  
PAG  
3VH2245 2.5V / 3.3V 8-Bit High Bandwidth Bus Switch  
CORPORATE HEADQUARTERS  
for SALES:  
for Tech Support:  
6024 Silver Creek Valley Road  
San Jose, CA 95138  
800-345-7015 or 408-284-8200  
fax: 408-284-2775  
www.idt.com  
logichelp@idt.com  
8

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