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PI3B3125 PI3B3126
3.3V, 4-Bit, 2-Port NanoswitchTM w/Individual Enables
Features
* Near-Zero propagation delay * 5 switches connect inputs to outputs * Fast Switching Speed -4ns Max. * Ultra Low Quiescent Power (0.1A Typical) - Ideally suited for notebook applications * Packaging (Pb-free & Green available): - 14-pin 150-mil wide plastic SOIC (W) - 14-pin 170-mil wide plastic TSSOP (L) - 16-pin 150-mil wide plastic QSOP (Q)
Description
Pericom Semiconductor's PI3B3125 and PI3B3126 are 3.3 Volt, 4-bit bus switches designed with four individual 5 bus switches with fast indiviual enables in an industry standard 74XX125/126 pinout. When enabled via the associated Bus Enable (BE) pin, the "A" pin is directly connected to the "B" pin for that particular gate. The bus switch introduces no additional propagation delay or additional ground bounce noise. The PI3B3125 device has active LOW enables, and the PI3B3126 has active HIGH enables.
PI3B3125 Block Diagram
A0 BE0 A1 BE1 A2 BE2 A3 BE3
A B
PI3B3126 Block Diagram
B0
SW
A0 BE0
SW
B0
SW
B1
A1 BE1
SW
B1
SW
B2
A2 BE2
SW
B2
SW
B3
SW
A3 BE3
SW
B3
SW
A
B
BE
OE
1
PS8153F
09/09/04
PI3B3125/PI3B3126 3.3V, 4-Bit, 2-Port NanoSwitchTM w/Individual Enables
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 +4.6V 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.
PI3B3125 14-Pin Configuration
BE0 A0 B0 BE1 A1 B1 GND
1 2 3 4 5 6 7 14 13 12 11 10 9 8
PI3B3126 14-Pin Configuration
VCC BE3 A3 B3 BE2 A2 B2 BE0 A0 B0 BE1 A1 B1 GND
1 2 3 4 5 6 7 14 13 12 11 10 9 8
VCC BE3 A3 B3 BE2 A2 B2
PI3B3125 16-Pin Configuration
NC BE0 A0 B0 BE1 A1 B1 GND
1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
PI3B3126 16-Pin Configuration
VCC BE3 A3 B3 BE2 A2 B2 NC NC BE0 A0 B0 BE1 A1 B1 GND
1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
VCC BE3 A3 B3 BE2 A2 B2 NC
Pin Description
Pin Name BEN BEN A3-A0 B3-B0 VCC GND Description Switch Enable (PI3B3125) Switch Enable (PI3B3126) Bus A Bus B Power Ground
Truth Table(1)
PI3B3125 BEN X(2) H L PI3B3126 BEN X L H AN BN VCC VCC VCC Function Disconnect Disconnect Connect Hi-Z Hi-Z GND Hi-Z Hi-Z Bn An
Notes: 1. H = High Voltage Level, L = Low Voltage Level, Hi-Z = High Impedance, X = Don't Care 2. A pull-up resistor should be provided for power-up protection.
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PS8153F 09/09/04
PI3B3125/PI3B3126 3.3V, 4-Bit, 2-Port NanoSwitchTM w/Individual Enables DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 3.3V 10%)
Parameters VIH VIL IIH IIL IOFF VIK RON Description Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Off Current Clamp Diode Voltage Switch On-Resistance(3) Test Conditions(1) Min. 2.0 -0.5 0.8 1 1 10 -1.2 5 10 8 17 V A Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = 0, VOUT = 3 to 3.6V VCC = Min., IIN = -18mA VCC = Min., VIN = 0.0V, ION = 48mA or 60mA VCC = Min., VIN = 2.4V, ION = 15mA
Typ.(2)
Max.
Units V
Capacitance (TA = 25C, f = 1 MHz)
Parameters(4) Description Input Capacitance A/B Capacitance, Switch Off Test Conditions VIN = 0V Typ. 3.5 8 Units pF CIN COFF
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. Measured by the voltage drop between A and B pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A, B) pins. 4. This parameter is determined by device characterization but is not production tested.
Power Supply Characteristics
Parameters ICC ICC Description Quiescent Power Supply Current Supply Current per Input HIGH Test Conditions(1) VCC = Max. VIN = GND or VCC VCC = Max. VIN = 3.0V(3) Min. Typ.(2) 0.1 Max. 3 750 Units A
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. Per driven input (control inputs only); A and B pins do not contribute to ICC.
3
PS8153F
09/09/04
PI3B3125/PI3B3126 3.3V, 4-Bit, 2-Port NanoSwitchTM w/Individual Enables PI3B3125 Switching Characteristics over Operating Range
PI3B3125 Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propagation Ax to Bx, Bx to Ax Bus Enable Time Bus Disable Time Delay(2,3) Conditions(1) Min. CL = 50pF RL = 500 CL = 50pF, RL = 500, RL = 500 1.0 1.0 Com. Max. 0.25 3.0 4.0 ns Units
PI3B3126 Switching Characteristics over Operating Range
PI3B3126 Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time Bus Disable Time Conditions(1) Min. CL= 50pF RL = 500 CL= 50pF, RL = 500, RL = 500 1.0 1.0 Com. Max. 0.25 2.5 4.0 ns Units
Notes: 1. See test circuit and waveforms. 2. This parameter is guaranteed but not tested on Propagation Delays. 3. The bus 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 0.25ns for 50pF 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 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.
Applications Information
Logic Inputs The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a + 3.3V supply, IN may be driven low to 0V and high to 3.6V. Driving IN Rail-to-Rail(R) minimizes power consumption. Power-Supply Sequencing and Hot-Plug Information Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC and GND before applying signals to input/output or control pins.
Rail-to-Rail is a registeredtrademark of Nippon Motorola, Ltd.
4
PS8153F
09/09/04
PI3B3125/PI3B3126 3.3V, 4-Bit, 2-Port NanoSwitchTM w/Individual Enables Packaging Mechanical: 14-pin SOIC (W)
14
.149 .157
3.78 3.99
0-8
.0099 .0196
0.25 x 45 0.50
.0075 .0098
0.41 1.27
.2284 .2440 5.80 6.20
0.19 0.25
1
.336 .344 8.55 8.75
.016 .050
.0155 .026 0.393 0.660
.053 .068
1.35 1.75
SEATING PLANE
REF
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
.050 BSC 1.27
.013 .020 0.330 0.508
.0040 0.10 .0098 0.25
Packaging Mechanical: 14-pin TSSOP (L)
14
0.169 0.177
4.3 4.5
0.004 0.09 0.008 0.20
0.45 0.75
0.018 0.030
1
0.193 0.201 4.90 5.10
0.240 0.264
6.1 6.7
0.047 1.20 max.
SEATING PLANE
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
0.0256 typical 0.65
0.007 0.012 0.19 0.30
0.002 0.05 0.006 0.15
5
PS8153F
09/09/04
PI3B3125/PI3B3126 3.3V, 4-Bit, 2-Port NanoSwitchTM w/Individual Enables 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
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
Detail A
.008 0.203 REF
.007 .010
0.178 0.254
SEATING PLANE
.004 0.101 .010 0.254
0.41 .016 1.27 .050
.228 .244 5.79 6.19
.025 BSC 0.635
.008 .012 0.203 0.305
X.XX DENOTES DIMENSIONS IN MILLIMETERS X.XX
Ordering Information
Ordering Code PI3B3125L PI3B3125LE PI3B3125W PI3B3125WE PI3B3125Q PI3B3125QE PI3B3126L PI3B3126LE PI3B3126W PI3B3126WE PI3B3126Q PI3B3126QE Package Code L L W W Q Q L L W W Q Q 14-Pin TSSOP Pb-free & Green, 14-Pin TSSOP 14-pin SOIC Pb-free & Green, 14-pin SOIC 16-pin QSOP Pb-free & Green, 16-pin QSOP 14-Pin TSSOP Pb-free & Green, 14-Pin TSSOP 14-pin SOIC Pb-free & Green, 14-pin SOIC 16-pin QSOP Pb-free & Green, 16-pin QSOP Package Desciption
Notes: 1. Thermal Characteristics can be found on the web at www.pericom.com/packaging/
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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PS8153F 09/09/04

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