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PI3B16211
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
3.3V, Hot Insertion, 24-Bit BusSwitch
Features
* * * * * * * Near-Zero propagation delay 5-ohm switches connect inputs to outputs Fast Switching Speed - 4.5ns max. Permits Hot Insertion VCC operating range: 3.0V to 3.6V Industrial operating temperature: -40C to +85C Packaging (Pb-free & Green available): - 56-pin 240-mil wide thin plastic TSSOP (A) - 56-pin 300-mil wide plastic SSOP (V) - 56-pin 173-mil wide thin plastic TVSOP (K)
Description
Pericom Semiconductor's PI3B16211 is a 3.3 volt, hot insertion, 24bit bus switch designed with a low On-Resistance allowing inputs to be connected directly to outputs. This device operates as a 24bit or a as 12-bit bus switch that provides high-speed bus switching.
Block Diagram
1A1 12B1
Pin Configuration
NC
1A12 1B12
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
1OE 2OE 1B1 1B2 1B3 1B4 1B5 GND 1B6 1B7 1B8 1B9 1B10 1B11 1B12 2B1 2B2 2B3 GND 2B4 2B5 2B6 2B7 2B8 2B9 2B10 2B11 2B12
1A1 1A2 1A3 1A4
1OE 2A1 2B1
1A5 1A6 GND 1A7 1A8 1A9 1A10 1A11 1A12
2A12
2B12
2OE
Truth Table
1OE L L H H 2OE L H L H 1A, 1B I/Os 1A = 1B 1A = 1B Z Z 2A, 2B I/Os 2A = 2B Z 2A = 2B Z
2A1 2A2 VCC 2A3 GND 2A4 2A5 2A6 2A7 2A8
Note: 1. H = High Voltage Level, L = Low Voltage Level Z = High Impedance
Pin Description
Pin Name 1OE, 2OE xAx xBx I/O I I/O I/O Bus A Bus B De s cription Select Inputs
2A9 2A10 2A11 2A12
1
PS8176D
09/29/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B16211 3.3V, Hot Insertion, 24-Bit Bus 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 ........................ -0C to +85C Supply Voltage Range ....................................................... -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 = 3.0V to 3.6V
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 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 VCC = Min, IIN = -18mA VCC = Min., VIN = 0.0V, ION = 48mA or 64mA VCC = Min., VIN = 2.4V, ION = 15mA -0.7 5 10 M in. 2.0 -0.5 0.8 1 1 1 -1.2 8 15 V A Typ.(2) M ax. Units V
High Impedance Output Current 0 A, B VCC
Capacitance (TA = 25C, f = 1 MHz)
Parame te rs (5) CIN C O FF CON De s cription Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch On VIN = 0V Te s t Conditions Typ. 3.0 8.5 17.0 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 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
PS8176D
09/29/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B16211 3.3V, Hot Insertion, 24-Bit Bus Switch
Power Supply Characteristics
Parame te rs ICC ICC ICCD De s cription Quiescent Power Supply Current Supply Current per Input @ TTL High Supply Current per Input per MHz(4) Te s t Conditions (1) VCC = Max. VCC = Max. VCC = Max. A & B Pin Open Control Input Toggling 50% Duty Cycle VIN = GND or VCC VIN = 3.0V(3) M in. Typ(2) M ax. 10 750 0.25 mA/ MHz 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 TTL driven input (control inputs only); A and B 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 and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design. RL = 500-ohms, R = 500-ohms(4)
Switching Characteristics over Operating Range
Com. Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ De s cription Propagation Ax to Bx, Bx to Ax Bus Enable Time BE to Ax or Bx Bus Disable Time BE to Ax or Bx Delay(2,3) CL = 50pF, RL = 500 ohms R = 500 ohms 1 1 Conditions (1) M ax. M in. 0.25 4.5 5.0 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. 4. Applies to tPZX, tPXZ.
3
PS8176D
09/29/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B16211 3.3V, Hot Insertion, 24-Bit Bus Switch
Packaging Mechanical: 56-Pin TSSOP (A)
Packaging Mechanical: 56-Pin SSOP (V)
56
.291 .299 7.39 7.59
.396 .416 10.06 10.56 Gauge Plane .010 0.25 .02 .04 0.51 1.01
1 .720 18.29 .730 18.54 .015 0.381 x 45 .025 0.635
.008 0.20 Nom.
.110 2.79 Max .025 BSC 0.635 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .008 .0135 0.20 0.34 .008 0.20 .016 0.40
0-8
4
PS8176D
09/29/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B16211 3.3V, Hot Insertion, 24-Bit Bus Switch
Packaging Mechanical: 56-Pin TVSOP (K)
56
.169 .177
4.30 4.50
0.09 0.20 .0035 .008
1 .031 .041 0.80 1.05
0.45 .018 0.75 .030 .252 BSC 6.4 SEATING PLANE .047 1.20 Max.
.441 .449
11.20 11.40
.016 BSC 0.40 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS
.005 .009 0.13 0.23
.002 .006 0.05 0.15
Ordering Information
Ordering Code PI3B16211A PI3B16211AE PI3B1621V PI3B16211VE PI3B16211K PI3B16211KE Package Code A A V V K K Package Type 56-pin 240-mil wide TSSOP Pb-free & Green, 56-pin 240-mil wide TSSOP 56-pin 300-mil wide SSOP Pb-free & Green, 56-pin 300-mil wide SSOP 56-pin 173-mil wide TVSOP Pb-free & Green, 56-pin 173-mil wide TVSOP
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
PS8176D 09/29/04

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