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PI3C3125
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables
Features
* Near-Zero propagation delay * 5-ohm switches connect inputs to outputs * High Bandwidth (>400 MHz) * 2.5V/3.3V Supply Voltage Operation * Rail-to-Rail, or 2.5V or 3.3V Switching * 5V I/O Tolerant * Permits Hot Insertion * 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) - 16-contact TDFN (ZJ)
Description
Pericom Semiconductor's PI3C3125 IS A 2.5 volt or 3.3 volt, 4-bit bus switch designed with four individual 5-ohm bus switches with fast individual enables in an industry standard 74XX125/126 pinout. When enabled via the associated Bus Enable 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 PI3C3125 device has active LOW enables. It is very useful in switching signals that have high bandwidth (>400 MHz).
Applications
* High Bandwidth Data Switching * Hot Docking
Block Diagram
A0 BE0 A1 BE1 A2 BE2 A3 BE3
B0
B1
B2
B3
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PI3C3125 2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with 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 (Inputs & VCC Only) .....-0.5V to +4.6V Supply Voltage to Ground Potential (Outputs & D/O Only) ..-0.5V to +4.6V DC Input Voltage ....................................................................-0.5V to +5.5V 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.
14-Pin Configurations
16-Pin Configurations
BE0 A0 B0 BE1 A1 B1 GND
1 14 2 13 3 12 4 14-PIN 11 5 10 6 9 7 8
Vcc BE3 A3 B3 BE2 A2 B2
NC BE0 A0 B0 BE1 A1 B1 GND
1 16 2 15 3 14 4 13 16-PIN 5 12 6 11 7 10 8 9
Vcc BE3 A3 B3 BE2 A2 B2 NC
Pin Description
Pin Name BEn A3 - A0 B3 - B0 VCC GND Description Switch Enable Bus A Bus B Power Ground
Truth Table(1)
BEn X* H L An Hi-Z Hi-Z Bn Bn Hi-Z Hi-Z An VCC GND VCC VCC Function Disconnect Disconnect Disconnect
Note: 1. H = High Voltage Level, L = Low Voltage Level HI-Z = High Impedance, X = Don't Care * A pull-up resistor should be provided for power-up protection.
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PI3C3125 2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables
DC Electrical Characteristics (Over Operating Range, TA = -40C to +85C, VCC = 3.3V 10%)
Parameters VIH VIL IIH IIL IOZH(3) VIK RON Description Input HIGH Voltage Input LOW Voltage Input HIGH current Input LOW Current High Impedance Output Current Clamp Diode Voltage Switch ON Resistance(4) Test Conditions(1) Guearanteed Logic HIGH Level Guaranteed Logic LOW Level -0.5 VCC = Max., VIN = VCC VCC = Max., VIN = GND 0 A, B VCC VCC = Min., IIN = -18mA VCC = Min., VIN = 0.0V, ION = 48mA or 60mA VCC = Min., VIN = 2.4V, ION = 15mA -0.73 5 8 Min. 2.0 Typ.(2) 0.8 1 1 1 -1.2 7 15 V -Ohm Max Units V
A
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 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.
Capacitance (TA = 25C, f = 1 MHz)
Parameters(1) 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. 3.5 5.0 10.0 Units pF
Notes: 1. This parameter is determined by device characterization but is not production tested.
Power Supply Characteristics
Parameters ICC ICC 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 input only); A and B pins do not contribute to ICC. Description Quiescent Power Supply Current Supply Current per Input HIGH Test Conditions VCC = Max VCC = Max VIN = GND or VCC VIN = 3.0V(3) Min. Typ.(2) 260 Max. 500 750 Units A
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PI3C3125 2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables Switching Characteristics over 3.3V Operating Range
Com. Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propogation A to B, B to A Delay(1,2) Conditions CL =50pF RL = 500-Ohm CL =50pF RL = 500-Ohm R = 500-Ohm 1.5 1.5 Min. Max. 0.25 6.5 5.5 ns Units
Bus Enable Time Bus Disable Time
Notes: 1. This parameter is guaranteed but not tested on Propagation Delays. 2. 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.
Switching Characteristics over 2.5V Operating Range
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propogation Delay(1,2) A to B, B to A Bus Enable Time Bus Disable Time Conditions CL =50pF RL = 500-Ohm CL =50pF RL = 500-Ohm R = 500-Ohm 1.5 1.5 Com. Min. Max. 0.25 9.8 8.3 ns Units
Notes: 1. This parameter is guaranteed but not tested on Propagation Delays. 2. 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.
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PI3C3125 2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables
4.0
VDD 3.1V 2.9V 2.7V 2.5V 2.3V
V
3.8V 3.6V 3.4V 3.2V 3.0V 2.8V
2.0
VOUT
0.0 0.0 1.0 2.0 3.0 4.0 5.0
)
VIN (V)
Switch Output Voltage vs. Input Voltage over Various Supply Voltages
14
DOCUMENT CONTROL NO. PD - 1002 REVISION: E DATE: 03/09/05
.149 .157
3.78 3.99
.0099 .0196
1
0.25 x 45 0.50
.336 .344 8.55 8.75
0-8
.0075 .0098
0.19 0.25
.0155 .026 0.393 0.660
.053 .068
1.35 1.75
SEATING PLANE
0.41 1.27
.2284 .2440 5.80 6.20
.016 .050
1
REF
.050 BSC 1.27
.013 .020 0.330 0.508
.0040 0.10 .0098 0.25
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
Notes: 1) Controlling dimensions in millimeters. 2) Ref: JEDEC MS-012D/AB
Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 * www.pericom.com
DESCRIPTION: 14-Pin, 150-Mil Wide, SOIC PACKAGE CODE: W
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PI3C3125 2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables
DOCUMENT CONTROL NO. PD - 1309 REVISION: C DATE: 03/09/05 14
0.004 0.09 0.008 0.20 0.169 0.177 4.3 4.5 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
0.0256 typical 0.65
0.007 0.012 0.19 0.30
0.002 0.05 0.006 0.15
Note: 1. Package Outline Exclusive of Mold Flash and Metal Burr 2. Controlling dimentions in millimeters 3. Ref: JEDEC MO-153F/AB-1
Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 * www.pericom.com
DESCRIPTION: 14-Pin, 44mm Wide, TSSOP PACKAGE CODE: L
DOCUMENT CONTROL NO. PD - 1201
16
.008 0.20 MIN.
.008 .013 0.20 0.33 Guage Plane
REVISION: G DATE: 11/07/07
.150 .157
3.81 3.99
.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
Detail A
.007 0.178 .010 0.254
SEATING PLANE .004 0.101 .010 0.254 .228 .244 5.79 6.19
Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 * www.pericom.com
DESCRIPTION: 16-Pin 150-Mil Wide QSOP PACKAGE CODE: Q
.025 BSC 0.635
.008 .012 0.203 0.305
X.XX DENOTES DIMENSIONS IN MILLIMETERS X.XX
Note: 1) Controlling dimensions in inches. 2) Ref: JEDEC MO-137B/AB. 3) Dimensions do not include mold flash, protrusions or gate burrs
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PI3C3125 2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables
DATE: 07/28/08
DESCRIPTION: 16-contact, Thin Dual-in-line Flat No-Lead (TDFN) PACKAGE CODE: ZJ (ZJ16) DOCUMENT CONTROL #: PD-2042
08-0339
REVISION: C
Note:
* For latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php
Ordering Information
Ordering Code PI3C3125LE PI3C3125WE PI3C3125QE PI3C3125ZJE Packaging Code L W Q ZJ Package Type Pb-Free & Green, 14-Pin TSSOP Pb-free & Green, 14-pin SOIC Pb-free & Green, 16-pin QSOP Pb-free & Green, 16-pin TDFN Top Mark
TA
Notes: * Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ * E = Pb-free & Green * Adding an X suffix = Tape/Reel
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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