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PI3C16211
3.3V, High Bandwidth 24-Bit Bus Switch
Product Features
* Near-zero propagation delay * 5 Ohm switches connect inputs to outputs * Direct bus connection when switches are ON * Ultra-low quiescent power (0.2mA typical) - Ideally suited for notebook applications * Industrial operating temperature: -40C to +85C * Packages available: - 56-pin 240-mil wide thin plastic TSSOP (A) - 56-pin 300-mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor's PI3C series of bus switch circuits are produced using the Company's advanced submicron CMOS technology. The PI3C16211 is a 24-bit bus switch designed with a low ON resistance allowing inputs to be connected directly to outputs. This device operates as a 24-bit or a 12-bit bus switch, which provides high speed bus switching.
Product Pin Configuration
NC
Logic Block Diagram
1A1 1B1
1A1 1A2 1A3
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 1 B 10 1 B 11 1 B 12 2B1 2B2 2B3 GND 2B4 2B5 2B6 2B7 2B8 2B9 2 B 10 2 B 11 2 B 12
1A12
1B12
1A4 1A5 1A6 GND 1A7 1A8
1OE 2A1 2B1
1A9 1 A 10 1 A 11 1 A 12
56-Pin A,V
2A12
2B12
2A1 2A2 V CC 2A3 GND
2OE
2A4 2A5 2A6
Truth Table
1OE L L H H 2OE L H L H
1A, 1B
2A7
I/Os
2A, 2B
I/Os
2A8 2A9
1A = 1B 1A = 1B
2A = 2B
2 A 10 2 A 11 2 A 12
Z
2A = 2B
Z Z
Z
Product Pin Description
Pin Name S0-S2 xAx xBx I/O I
I/O I/O
Note:
1. H = High Voltage Level L = Low Voltage Level Z = High Impedance
Description Select Inputs Bus A Bus B
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PI3C16211 3.3V, High Bandwidth 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 ................................. -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 I/O Voltage .............................................................................-0.5V to +5.5V 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 IO Z(3 ) VIK De s cription Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High- Impedence Output Current Clamp diode Voltage Te s t Conditions (1 ) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VC C = Max., VIN = VC C VC C = Max., VIN 0 A, B VC C VC C = Min., IIN = -18mA VC C = Min.,VIN = 0.0V IO N = 48mA or 64mA VC C = Min.,VIN = 2.4V IO N = 15mA
=
M in. 2.0 -0 . 5 -- -- -- -- -- --
Typ.(2 ) -- -- -- -- -- -0.73 6.5 10
M ax. --
Units V
0.8 1 1 1 -1.2 8.5 15 V A
GND
RO N
Switch On
Resistance(4 )
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. 3.5 4.0 8.0 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. 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. 5. This parameter is determined by device characterization but is not production tested.
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PI3C16211 3.3V, High Bandwidth 24-Bit Bus Switch
Power Supply Characteristics
Parame te rs ICC DICC
Notes:
De s cription Quiescent Power Supply Current Supply Current per Input @ TTL HIGH
Te s t Conditions (1) VCC = Max. VIN = GND or VCC VCC = Max. VIN = 3.0V(3)
M in. -- --
Typ.(2) 260 --
M ax. 850
Units
A 750
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.
PI3C16211 Switching Characteristics Over Operating Range
PI3C16211 Com Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ De s cription Propagation Delay(2,3) AX to BX, BX to AX Bus Enable Time nOE to AX or BX Bus Disable Time nOE to AX or BX Conditions (1) C L = 50pF RL = 500 C L = 50pF RL = 500 R = 500 M in. -- 1.5 1.5 M ax. 0.25 6.5 5.5 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.
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PI3C16211 3.3V, High Bandwidth 24-Bit Bus Switch
56-Pin TSSOP (A) Package
56
.236 .244
6.0 6.2
1
.547 .555
13.9 14.1 1.20 .047 Max. SEATING PLANE
.004 0.09 .008 0.20 0.45 .018 0.75 .030 .319 BSC 8.1
.0197 BSC 0.50 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
.007 .011 0.17 0.27
.002 .006 0.05 0.15
56-Pin SSOP (V) Package
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
Ordering Information
Part PI3C16211A PI3C16211V Pin - Package 56 - TSSOP (A) 56 - SSOP (V) Width 240- mil 0C to 85C 300- mil Te mpe rature
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
Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying VBIAS and signals to input/output or control pins.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd
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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