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PI5C3383 5-Bit, 4-Port Bus Exchange Switch
Features
* Near-Zero propagation delay * 5 switches connect inputs to outputs * Direct bus connection when switches are ON * Ultra-low quiescent power (0.2A typical) - Ideally suited for notebook applications * Packaging (Pb-free & Green available): - 24-pin 173-mil wide plastic TSSOP (L) - 24-pin 150-mil wide plastic QSOP (Q) - 24-pin 300-mil wide plastic SOIC (S)
Description
The PI5C3383 is a 5-bit, 4-port bus switch with exchange designed with a low On-Resistance allowing inputs to be connected directly to outputs. The switch creates no additional propagational delay or additional ground bounce noise. The switch is turned ON by the Bus Enable (BE) input signal, and the Bus Exchange (BX) input signal offers nibble swapping of the AB and CD pairs of signals. This exchange configuration allows byte swapping of buses in systems. It can also be used as a quad 2-to-1 multiplexer and to create low delay barrel shifters, etc.
Block Diagram
A0 C0
Pin Configuration
BE C0 A0 B0 D0 C1 A1 B1 D1 C2 A2 GND
1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13
B0
D0
A4
C4
Vcc D4 B4 A4 C4 D3 B3 A3 C3 D2 B2 BX
B4
D4
BX BE
Pin Description
Pin Name BE BX AX BE H L L BX X L H A0-A4 Hi-Z C0-C4 D0-D4 B0-B4 Hi-Z D0-D4 C0-C4 BX CX DX GND VCC Description Bus Enable Input (Active LOW) Bus Exchange Input Bus A Bus B Bus C Bus D Ground Power
Truth Table(1)
Function Disconnect Connect Exchange
Note: 1. H =High Voltage Level, X = Don't Care L = Low Voltage Level, Hi-Z = High Impedance
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PS7028G
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PI5C3383 5-Bit, 4-Port Bus Exchange Switch 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 +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) -0.5V to +7.0V DC Input Voltage ..................................................................-0.5V to +7.0V DC Output Current............................................................................120 mA 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 = 5V 5%)
Parameters VIH VIL IIH IIL IOZH VIK V IOS VH RON Description Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Short Circut Current(3) Input Hysteresis at Control Pins Switch On-Resistance(4) VCC = Min., VIN = 0.0V, ION = 48mA VCC = Min., VIN = 2.4V, ION = 15mA Test Condidtions(1) Min. 2.0 -0.5 Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND 0 A B, CD VCC VCC =Min., IIN = -18mA AB (CD) = 0V, CD (AB) = VCC 100 -
Typ.(2) 150 5 10
Max 0.8 1 1 1 -0.7 7 15
Units V
A -1.2 mA mV
Capacitance (TA = 25C, f = 1 MHz)
Parameters(5) CIN COFF CON Input Capacitance AB/CD Capacitance, Switch OFF AB/CD Capacitance, Switch ON VIN = 0V Description Test Conditions Typ. 6 8 14 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 = 5.0V, 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 AB and CD pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A or B, C or D) pins. 5. This parameter is determined by device characterization but is not production tested.
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PS7028G
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PI5C3383 5-Bit, 4-Port Bus Exchange Switch Power Supply Characteristics
Parameters ICC ICC Description Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) VCC = Max. VCC = Max. VCC = Max., AB and CD pins Open BE = GND Control Input Toggling 50% Duty Cycle Test Conditions(1) VIN = GND or VCC VIN = 3.4V(3) Min. Typ. 0.1 Max. 3.0 2.5 Units A mA
ICCD
-
-
0.25
mA/ MHz
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at Vcc = 5.0V, +25C ambient. 3. Per TTL driven input (VIN = 3.4V, control inputs only); A, B, C, and D pins do not contribute to Icc. 4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The A, B, C, and D inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
Switching Characteristics over Operating Range
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tBX Description Propagation Delay(2, 3) Ax to Cx, Bx to Dx Bus Enable Time BE to Cx or Dx Bus Disable Time BE to Cx or Dx Bus Exchange Time BX to Cx or Dx CL = 50pF RL = 500 Condidtions(1) Com Min. 1.5 1.5 1.5 Typ. 0.25 Max 6.5 5.5 6.5 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 0.25\ns 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
Logic Inputs
The logic control inputs can be driven up to +5.5V regardless of the supply voltage. For example, given a 5.0V supply, the control or select pins may be driven low to 0V and high to 5.5V. Driving the control or select pins Rail-toRail 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.
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PS7028G
12/10/04
PI5C3383 5-Bit, 4-Port Bus Exchange Switch 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 .018 0.75 .030
.047 1.20 Max
SEATING PLANE
.252 BSC 6.4
.0256 BSC 0.65
.007 .012 0.19 0.30
.002 0.05 .006 0.15
Packaging Mechanical: 24-Pin QSOP (Q)
24
.008 0.20 MIN.
.150 .157
3.81 3.99
.008 .013 0.20 0.33
Guage Plane
.010 0.254
1
Detail A
.016 .035 0.41 0.89
.041 1.04 REF
0-6
.337 .344
8.56 8.74
.015 x 45 0.38
.033 0.84
.053 .069
1.35 1.75
Detail A
SEATING PLANE
.007 .010
.016 .050
0.406 1.27
0.178 0.254
.025 typical 0.635
.008 0.203 .012 0.305
.004 0.101 .010 0.254
.228 .244 5.79 6.20
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
4
PS7028G
12/10/04
PI5C3383 5-Bit, 4-Port Bus Exchange Switch Packaging Mechanical: 24-Pin SOIC (S)
24
.2914 .2992
7.40 7.60
.010 .029
1
.5985 15.20 .6141 15.60
0.254 x 45 0.737
0-8
.0091 .0125
0.23 0.32
.021 0.533 .031 0.787
0.41 .016 1.27 .050
.0926 2.35 .1043 2.65
SEATING PLANE
.394 .419 10.00 10.65
.050 BSC
1.27
.013 .020 0.33 0.51
.0040 .0118
0.10 0.30
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
Ordering Information
Ordering Code PI5C3383L PI5C3383LE PI5C3383Q PI5C3383QE PI5C3383S PI5C3383SE Packaging Code L L Q Q S S Package Type 24-pin 173-mil wide plastic TSSOP Pb-free & Green, 24-pin 173-mil wide plastic TSSOP 24-pin 150-mil wide plastic QSOP Pb-free & Green, 24-pin 150-mil wide plastic QSOP 24-pin 300-mil wide plastic SOIC Pb-free & Green, 24-pin 300-mil wide plastic SOIC
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
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PS7028G 12/10/04

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