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PI3CH281
Low Voltage, High Bandwidth, 2-Channel, 4:1 Mux/DeMux, NanoSwitchTM with Single Enable
Features
* Near-zero propagation delay * 5 switches connect inputs to outputs * * * * * * * High signal passing bandwidth (300MHz) Beyond Rail-to-Rail switching 5V I/O tolerant with 3.3V supply 2.5V and 3.3V supply voltage operation Hot insertion capable Industrial operating temperature: -40C to +85C 2KV ESD Protection (human body model)
Description
Pericom Semiconductor's PI3CH series of switch circuits are produced using the Company's advanced sub-micron CMOS technology, achieving industry leading performance. The PI3CH281 is a 2-channel, 4:1 Multiplexer/Demultiplexer with 3-state outputs. The switch introduces no additional ground bounce noise or propagation delay. The PI3CH281 device is very useful in switching signals that have high bandwidth (300MHz).
* Latch-up performance >250mA per JESD17 * Packaging (Pb-free & greeen available): - 16-pin 150-mil wide plastic QSOP (Q) - 16-pin 173-mil wide plastic TSSOP (L) - 20-contact TQFN (ZH)
Block Diagram
IA0 IA1 IA2 IA3 IB0 IB1 IB2 IB3
Pin Configuration
N.C.
1
VCC
20 19 18 17
EN
EN S1 IA3 IA2
1 2 3 4 5 6 7 8
16-pin L, Q
16 15 14 13 12 11 10 9
VCC N.C. S0 IB3 IB2 IB1 IB0 YB
EN S1 IA3 IA2 IA1 IA0 YA N.C.
2 3 4 5 6 7 8 9 10 11
N.C. N.C. S0 IB3 IB2 IB1 IB0 YB
S0 S1
IA1 IA0 YA GND
20-Contact 16 ZH 15 14 13 12
N.C.
GND
YA
YB
Notes: 1. N.C = No internal connection
1
PS8726A
07/08/04
PI3CH281 Low Voltage, High Bandwidth, 2-Channel, 4:1 Mux/DeMux, NanoSwitchTM with Single Enable Pin Description
Pin Name IAN, IBN S0-1 EN YA to YB GND VCC Description Data Inputs Select Inputs Enable Data Outputs Ground Power
Truth Table(1)
Enable EN H L L L L S1 X L L H H Select S0 X L H L H Y Hi-Z I0 I1 I2 I3 Function Disable S1-0 = 0 S1-0 = 1 S1-0 = 2 S1-0 = 3
Notes: 1. H=High Voltage Level; L=Low Voltage Level
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ................................................ -65C to +150C Ambient Temperature with Power Applied ............... -40C to +85C Supply Voltage to Ground Potential ........................... -0.5V to +4.6V DC Input Voltage ........................................................ -0.5V to +6.0V DC Output Current................................................................... 120mA Power Dissipation ....................................................................... 0.5W
Note: Stresses greater than those listed under 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.
DC Electrical Characteristics, 3.3V Supply (Over the Operating Range, TA = -40C to +85C, VCC = 3.3V 10%)
Parameters VIH VIL VIK IIH IIL IOZH RON Description Input HIGH Voltage Input LOW Voltage Clamp Diode Voltage Input HIGH Current Input LOW Current Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Min., IIN = -18 mA VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = Min., VIN = 0.0V, ION = 48 mA or -64mA VCC = Min., VIN = 3.6V, ION = -15 mA Min. 2.0 -0.5 -1.3 0.8 -1.8 1 1 1 4 5 6 8 A V Typ(2) Max. Units
High Impedance Output Current 0 Y, In VCC Switch On-Resistance(4)
2
PS8726A
07/08/04
PI3CH281 Low Voltage, High Bandwidth, 2-Channel, 4:1 Mux/DeMux, NanoSwitchTM with Single Enable DC Electrical Characteristics, 2.5V Supply (Over Operating Range, TA = -40C to +85C, VCC = 2.5V 10%)
Parameters(5) VIH VIL VIK IIH IIL IOZH RON Description Input HIGH Voltage Inout LOW Voltage Clamp Diode Voltage Input HIGH Current Input LOW Current High Impedance Current(3) Test Conditions Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., IIN = -6mA VCC = Max., VIN = VCC VCC = Max., VIN = GND 0 Y, In VCC VCC = Min., VIN =0.0V, ION = -48mA VCC = Min., VIN = 2.25V, ION = -15mA Min. 1.8 -0.3 - - - - - - Typ. - - -0.7 - - - 6 7 Max. VCC + 0.3 0.8 -1.8 1 1 1 8 14 A V Units
Switch On-Resistance(4)
Capacitance (TA = 25C f = 1 MHz)
Parameters(5) CIN COFF(IN) COFF(Y) CON Description Input Capacitance In Capacitance, Switch Off Y Capacitance, Switch Off Y/In Capacitance, Switch On VIN = 0V Test Conditions Typ. 3.0 3.5 12 15.0 pF Units
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 3.3V, TA = 25C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. Measured by the voltage drop between Y and In pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (Y, In) pins. 5. This parameter is determined by device characterization but is not production tested.
Power Supply Characteristics
Parameters Description ICC Quiescent Power Supply Current
Test Conditions(1) VCC = 3.6V, VIN = GND or VCC
Min.
Typ.(2)
Max. 0.8
Units mA
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 3.3V, +25C ambient.
3
PS8726A
07/08/04
PI3CH281 Low Voltage, High Bandwidth, 2-Channel, 4:1 Mux/DeMux, NanoSwitchTM with Single Enable Dynamic Electrical Characteristics Over the Operating Range (TA = -40 to +85, VCC = 3.3V 10%)
Parameter XTALK OIRR BW Description Crosstalk Off-Isolation -3dB Bandwidth Test Condition See Test Diagram See Test Diagram See Test Diagram 200 Min. Typ. -60 -60 300 Max. Units dB MHz
Switching Characteristics over 3.3V Operating Range
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propogation Delay(2,3) Y to In, In to Y Enable Time S or EN to Y or In See Test Diagram Disable Time S or EN to Y or In 1.5 9.0 Conditions(1) See Test Diagram 1.5 Com. Min. Typ. Max. 0.3 9.0 ns Units
Switching Characteristics over 2.5V Operating Range
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propogation Delay(2,3) Y to In, In to Y Enable Time S or EN to Y or In See Test Diagram Disable Time S or EN to Y or In 1.5 12.0 Conditions(1) See Test Diagram 1.5 Com. Min. Max. 0.3 15.0 ns Units
Notes: 1. See test circuit and waveforms. 2. This parameter is guaranteed but not tested on Propagation Delays. 3. The switch contributes no propagational 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 0.30ns for 10pF load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the 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
PS8726A
07/08/04
PI3CH281 Low Voltage, High Bandwidth, 2-Channel, 4:1 Mux/DeMux, NanoSwitchTM with Single Enable Test Circuit for Electrical Characteristics(1)
6.0V
VCC
200
Pulse Generator
VIN
D.U.T
RT
VOUT 10pF CL
200
Notes: 1. CL = Load capacitance: includes jig and probe capacitance. 2. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator 3. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. 4. All input impulses are supplied by generators having the following characteristics: PRR MHz, ZO = 50, tR 2.5ns, tF 2.5ns. 5. The outputs are measured one at a time with one transition per measurement.
Switch Positions
Test tPLZ, tPZL tPHZ, tPZH Prop Delay Switch 6.0V GND Open
Test Circuit for Dynamic Electrical Characteristics
S1
HP4195A
R1
T1
VCC
HP11667A
D.U.T
10pF 50
5
PS8726A
07/08/04
PI3CH281 Low Voltage, High Bandwidth, 2-Channel, 4:1 Mux/DeMux, NanoSwitchTM with Single Enable Switching Waveforms
S or EN
2.5V
1.25V
tPZL
1.25V 0V
3.5V Input tPLH
Output
2.5V
2.5V tPHL 2.5V 2.5V
VOL
Output
tPLZ
VDD/2
tPHZ
VOL +0.3V
VOH
VOL
VOH
1.5V
VOH
Output
tPZH
VDD/2
VOH -0.3V
VOL
Voltage Waveforms Enable and Disable Times
3.5V Input tPLH tPHL 2.5V
1.5V VOH
Output tSK(p) = I tPHL - tPLH I
2.5V
VOL
Pulse Skew - tSK(p)
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PS8726A
07/08/04
PI3CH281 Low Voltage, High Bandwidth, 2-Channel, 4:1 Mux/DeMux, NanoSwitchTM with Single Enable Applications Information Logic Inputs
The logic control inputs can be driven upto 3.6Vregardless of the supply voltage. For example, given a +3.3V supply, EN maybe driven LOW to 0V and HIGH to 3.6V. Driving EN Rail-to-Rail(R) minimizes power consumption.
Power Supply-Sequencing
Proper power supply sequencing is recommended for all CMOS devices. Always apply VCC before applying signals to the input/ output or control pins.
Hot Insertion
For Datacom and Telecom applications that have ten or more volts passing through the backplane, a high voltage from the power supply may be seen at the device input pins during hot insertion. The PI3CHxx devices have maximum limits of 6V and 120mA for 20ns. If the power is higher or applied for a longer time or repeatedly reaches the maximum limits, the devices can be damaged.
Packaging Mechanical: 16-pin QSOP (Q)
16
.008 0.20 MIN.
.150 .157
3.81 3.99
.008 .013 0.20 0.33
Guage Plane
.010 0.254
1
.189 .197 4.80 5.00
.008 0.203 REF
Detail A
.016 .035 0.41 0.89
.041 1.04 REF
0-6
.015 x 45 0.38
.053 1.35 .069 1.75
SEATING PLANE
0.41 .016 1.27 .050
.228 .244 5.79 6.19
Detail A
.007 .010
0.178 0.254
.025 BSC 0.635
.008 .012 0.203 0.305
.004 0.101 .010 0.254
X.XX DENOTES DIMENSIONS IN MILLIMETERS X.XX
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PS8726A
07/08/04
PI3CH281 Low Voltage, High Bandwidth, 2-Channel, 4:1 Mux/DeMux, NanoSwitchTM with Single Enable Packaging Mechanical: 16-pin TSSOP (L)
16
.169 .177
4.3 4.5
1
.193 .201 4.9 5.1
.004 .008
0.09 0.20
.047 max. 1.20
SEATING PLANE
0.45 .018 0.75 .030
.252 BSC 6.4
.0256 BSC 0.65
.007 .012
.002 .006
0.05 0.15
0.19 0.30
X.XX DENOTES CONTROLLING X.XX DIMENSIONS IN MILLIMETERS
Packaging Mechanical: 20-contact TQFN (ZH)
4.500.10 (S)
0.750.05
3.50 REF.
Pin 20
3.500.10
3.050.10 1.50 REF. 2.050.10
Pin 1
C 0.35
0.0-0.05
0.400.10
0.50 TYP. (14X)
0.250.05
0.20 REF.
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PS8726A
07/08/04
PI3CH281 Low Voltage, High Bandwidth, 2-Channel, 4:1 Mux/DeMux, NanoSwitchTM with Single Enable Ordering Information
Ordering Code PI3CH281Q PI3CH281QE PI3CH281L PI3CH281LE PI3CH281Z_E Packaging Code Q Q L L Z Package Description 150-mil, 16-pin QSOP Pb-free & Green, 150-mil, 16-pin QSOP 173-mil, 16-pin TSSOP Pb-free & Green, 173-mil, 16-pin TSSOP Pb-free & Green, 16-contact TQFN
Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. Number of Transistors = TBD
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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PS8726A 07/08/04

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