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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B3861
3.3V, 10-Bit, 2-Port, NanoSwitchTM
Features
* * * * Near-Zero propagation delay 5-ohm switches connect inputs to outputs Fast Switching Speed - 4.5ns (max.) Ultra Low Quiescent Power (0.1A Typical) - Ideally suited for notebook applications * Packaging (Pb-free & Green available): - 24-pin 150-mil wide plastic QSOP (Q) - 24-pin 173-mil wide plastic TSSOP (L)
Description
Pericom's Semiconductor's PI3B3861 is a 10-bit, 3.3 volt, 2-port bus switch designed with a low On-Resistance (5-ohm) allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise. The switches are turned ON by the Bus Enable (BE) input signal.
Block Diagram
Pin Configuration
A0
SW
B0
A9
SW
B9
SW
BE
A B
NC A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 GND
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 24-Pin 19 Q 18 17 16 15 14 13
Vcc BE B0 B1 B2 B3 B4 B5 B6 B7 B8 B9
BE
Truth Table(1)
Function Disconnect Connect BE H L A0-9 Hi-Z B0-9
Product Pin Description
Pin Name BE A0-9 B0-9 GND VCC Description Bus Enable Input (Active LOW) Bus A Bus B Ground Power
Notes: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance
1
PS8148E
09/23/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B3861 3.3V, 10-Bit, 2-Port, NanoSwitch
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.
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 3.3V 10%)
Parameters Description VIH VIL IIH IIL IOZH VIK RON Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Clamp Diode Voltage Switch On Resistance(3) Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = Min., IIN = -18mA VCC = Min., VIN = 0.0V, ION = 48mA or 64mA VCC = Min, VIN = 2.4V, ION = 15mA 5 10 Min. 2.0 -0.5 0.8 1 1 1 -1.2 8 17 Typ.(2) Max. Units V V A A A V
High Impedance Output Current 0 A, B VCC
Capacitance (TA = 25C, f = 1 MHz)
Parameters(4) CIN COFF CON Description Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch On Test Conditions VIN = 0V VIN = 0V VIN = 0V Typ. 3.0 8.0 16.0 Units pF pF pF
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.
2
PS8148E
09/23/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B3861 3.3V, 10-Bit, 2-Port, NanoSwitch
Power Supply Characteristics
Parameters Description ICC ICC Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Test Conditions(1) VCC = Max. VCC = Max. VIN = GND or VCC VIN = 3.0V(3) Min. Typ(2) 0.1 Max. 3.0 750 Units A 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 TTL driven input (control input only); A and B pins do not contribute to ICC.
Switching Characteristics over Operating Range
PI3B3861 Parame te rs De s cription Conditions (2,3) Com. M in. tPLH tPH L tPZH tPZL tPH Z tPLZ Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time BE to Ax or Bx Bus Disable Time BE to Ax or Bx CL= 50pF, RL= 500 CL= 50pF, RL= 500 CL= 50pF, RL= 500 1 1 M a x. 0.25 4.5 4.5 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.
3
PS8148E
09/23/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B3861 3.3V, 10-Bit, 2-Port, NanoSwitch
Packaging Mechanical: 24-pin QSOP (Q)
24
.008 0.20 MIN.
.008 .013 0.20 0.33 Guage Plane
.150 .157
3.81 3.99
.010 0.254
1 .337 .344 8.56 8.74
Detail A
.016 .035 0.41 0.89
.041 1.04 REF
0-6
.033 0.84
.053 .069
1.35 1.75
.015 x 45 0.38
Detail A
.007 .010 SEATING PLANE .004 0.101 .010 0.254 .016 .050 0.406 1.27 .228 .244 5.79 6.20
0.178 0.254
.025 typical 0.635
.008 0.203 .012 0.305
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
Packaging Mechanical: 24-pin TSSOP (L)
24
.169 .177
4.3 4.5 .004 .008 0.09 0.20
1
.303 .311 7.7 7.9
0.45 0.75 .047 1.20 Max
.018 .030
SEATING PLANE
.252 BSC 6.4
.0256 BSC 0.65
.007 .012 0.19 0.30
.002 .006
0.05 0.15
X.XX DENOTES CONTROLLING X.XX DIMENSIONS IN MILLIMETERS
4
PS8148E
09/23/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B3861 3.3V, 10-Bit, 2-Port, NanoSwitch
Ordering Information
Ordering Code PI3B3861Q PI3B3861QE PI3B3861L PI3B3861LE Package Code Q Q L L Package Type 24-pin QSOP Pb-free & Green, 24-pin QSOP 24-pin TSSOP Pb-free & Green, 24-pin T SSOP
Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
5
PS8148E 09/23/04

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