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Logic Block Diagram
1A1 1B1
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PI3C16234
3.3V, High Bandwidth, 16-Bit to 32-Bit Mux/Demux BusSwitch
Product Features
RON is 9 Ohm Typical Pulldown on B Ports Low Power: 1mW Industrial Operation Temperature: 40C to 85C Near Zero Propagation Delay Switching Speed: 4.5ns max. (for 3.3V operation) Channel ON capacitance: 9pF (typ.) VCC Operating Range: +2 to +3.6V >100 MHz Bandwidth Packages: 56-Pin TSSOP
Product Description
Pericom Semiconductors PI3C series of logic circuits are produced using the Companys advanced submicron CMOS technology. The PI3C16234 is a 16-bit to 32-bit mux/demux switch. Industry leading advantages include almost zero propagation delay of 500ps because of the 9ohm channel resistance and low I/O capacitance. A1 port demultiplexes to either port B1 or B2 and the switch is bidirectional.
Application
Private Memory Module Switching
Product Pin Configuration
NC 1B1 2B1 2A1 3B1 4B1 4A1 GND 5B1 6B1 6A1 7B1 8B1 8A1 9B1 10B1 10A1 11B1 12B1 12A1 VCC 13B1 14B1 14A1 15B1 16B1 16A1 SEL ! " # $ % & ' ! " # $ % & ' ! " # $ % & #$ ## #" #! # # # "' "& "% "$ "# "" "! " " " !' !& !% !$ !# !" !! ! ! ! ' VCC 1A1 1B2 2B2 3A1 3B2 4B2 GND 5A1 5B2 6B2 7A1 7B2 8B2 9A1 9B2 10B2 11A1 11B2 12B2 GND 13A1 13B2 14B2 15A1 15B2 16B2 NC
1B2
16A1
16B1
56-Pin A
16B2
SEL
Function Table
Se le ction L H Function nl to nl nl to n2
Note: n = 116
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PI3C16234 3.3V, High Bandwidth, 16-Bit to 32-Bit Mux/Demux BusSwitch
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 Range ....................................................... 0.5V to +4.6V DC I/O 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.
DC Electrical Characteristics (Over the Operating Range TA= 40C to 85C VCC = 3.3V 10%)
Parameters Description VIH VIL IIH IIL IO VIK RON Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current B-port Pulldown Current Clamp Diode Voltage Switch On Resistance(4) Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = Min., VO = VCC SEL = High for B1, SEL = Low for B2 VCC = Min., IIN = 18mA VCC = Min., VIN = 0.0V, ION = 48mA or 64mA VCC = Min., VIN = 2.4V, ION =15mA Min. 2.0 0.5 2.5 Typ(1) 3.6 0.73 9 16 Max. 0.8 1 1 1.2 12 23 Units V A mA
Capacitance (TA = 25C, f = 1 MHz)
Parameters(5) CIN CON Description Input Capacitance A/B Capacitance, Switch On Test Conditions VIN = 0V VIN = 0V Typ. 3.5 9.3 Max. 11 Units pF pF
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 pins 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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PI3C16234 3.3V, High Bandwidth, 16-Bit to 32-Bit Mux/Demux BusSwitch
Power Supply Characteristics
Parame te rs ICC DICC 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 A 750 Units
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.
PI3C16234 Switching Characteristics over Operating Range
PI3C16234 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 BEX to AX or BX Bus Disable Time BEX to AX or BX Conditions (1) CL = 50pF RL = 500 CL = 50pF RL = 500 R = 500 M in. 1.5 1.5 M ax. 0.50 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 0.5ns for 25pF 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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03/13/01
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PI3C16234 3.3V, High Bandwidth, 16-Bit to 32-Bit Mux/Demux BusSwitch
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
Ordering Information
Part PI3C16234A Pin - Package Width Te mpe rature 56- TSSOP (A56) 240- mil 40C to +85C
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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