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PI3B3383
3.3V, 5-Bit, 4-Port Bus Exchange NanoSwitchTM
Product Features
* * * * Near-zero propagation delay 5 switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power (0.1A typical) - Ideally suited for notebook applications * Packages available: - 24-pin 173-mil wide plastic TSSOP (L) - 24-pin 150-mil wide plastic QSOP (Q)
Product Description
Pericom Semiconductor's PI3B series of logic circuits are produced using the Company's advanced submicron CMOS technology, achieving industry leading performance. The PI3B3383 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 bus switch creates no additional propagational delay or additional ground bounce noise. The switches are 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.
Logic Block Diagram
A0 C0
Product Pin Configuration
B0 D0
BE C0 A0 B0 D0 C1 A1 B1 D1 C2 A2 GND
24 1 23 2 22 3 21 4 24-Pin 20 5 L, Q, S 19 6 18 7 17 8 16 9 15 10 14 11 13 12
A4
C4
B4
D4
Vcc D4 B4 A4 C4 D3 B3 A3 C3 D2 B2 BX
Product Pin Description
BX BE
Pin Name BE BX Ax 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 X L Hi-Z = = = = BE H L L BX X L H A0-A4 Hi-Z C0-C4 D0-D4 B0-B4 Hi-Z D0-D4 C0-C4
High Voltage Level Don't Care Low Voltage Level High Impedance
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PI3B3383 3.3V, 5-Bit, 4-Port Bus Exchange NanoSwitch
TM
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 ............................................................................ 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 = 3.3V 10%)
Parame te rs VIH VIL IIH IIL IOZH VIK RON De s cription Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Switch On Resistance(3) Te s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND 0< AB, CD < VCC VCC = MIN., IIN = -18mA VCC = MIN., VIN = 0.0V, ION = 48mA VCC = MIN., VIN = 2.4V, ION = 15mA M in. 2.0 -0.5 -- -- -- -- -- -- Typ(2) -- -- -- -- -- -0.7 5 10 M ax. -- V 0.8 1 1 1 -1.2 7 15 V A Units
Capacitance (TA = 25C, f = 1 MHz)
Parame te rs (4) CIN C O FF CON De s cription Input Capacitance AB/CD Capacitance, Switch Off AB/CD Capacitance, Switch On VIN = 0V Te s t Conditions Typ. 3.0 12.0 24.0 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. 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. 4. This parameter is determined by device characterization but is not production tested.
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PI3B3383 3.3V, 5-Bit, 4-Port Bus Exchange NanoSwitch
TM
Power Supply Characteristics
Parame te rs ICC CC De s cription Quiescent Power Supply Current Supply Current per Input@ LVTTL HIGH Te s t Conditions (1) VCC = Max. VIN = GND or VCC VCC = Max. VIN = 3.0V(3) M in. Typ(2) 0.1 M ax. 10 750 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 = 3.0V, +25C ambient. 3. Per LVTTL driven input (VIN = 2.4V, control inputs only); A, B, C, and D pins do not contribute to ICC.
PI3B3383 Switching Characteristics over Operating Range
PI3B3383 Com Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ tBX De s cription 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 C l = 50 pF Rl = 500 Conditions (1) M in. -- 1 1 1 Typ. 0.25 -- -- -- M ax. -- 4.5 4.5 4.8 Units
ns
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.
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PI3B3383 3.3V, 5-Bit, 4-Port Bus Exchange NanoSwitch
TM
Parameter Measurements
From Output Under Test CL = 50pF (See note 1)
500
S1
6V Open GND
Te s t tPD tPLZ/tPZL tPHZ/tPZH
S1 Open 6V GND
500
LOAD CIRCUIT
Output Control (Low Level Enabling)
3V 1.5V tPZL 1.5V VOL +0.3V tPZH 1.5V 0V tPHZ VOH -0.3V VOH VOL tPLZ 3V 1.5V 0V
3V Input tPLH 1.5V 1.5V 1.5V 0V tPHL VOH Output 1.5V VOL
Output Waveform 1 S1 at 6V (see Note 2) Output Waveform 2 S1 at Open (see Note 2)
VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES
Notes: 1. CL includes probe and jig capacitance. 2. 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. 3. All input pulses are supplied by generators having the following characteristics: PRR<10MHz, ZO = 50, tr 2.5ns, tf 2.5ns. 4. The outputs are measured one at a time with one transition per measurement. 5. tPLZ and tPHZ are the same as tdis. 6. tPZL and tPZH are the same as ten. 7. tPLH and tPHL are the same as tpd.
Ordering Information
Part PI3B3383L PI3B3383Q Pin - Package 24 TSSOP (L) 24 QSOP (Q) Te mpe rature -40C to +85C
Applications
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a 3.0V supply, the control or select pins may be driven low to 0V and high to 3.6V. 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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PI3B3383 3.3V, 5-Bit, 4-Port Bus Exchange NanoSwitch
TM
24-Pin TSSOP (L) Package
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 .252 BSC 6.4
SEATING PLANE
.0256 BSC 0.65
.007 .012 0.19 0.30
.002 0.05 .006 0.15
X.XX DENOTES CONTROLLING X.XX DIMENSIONS IN MILLIMETERS
24-Pin QSOP (Q) Package
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
Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
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