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Logic Block Diagram
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PI3C3384 PI3C32384 (25)
2.5V/3.3V, High Bandwidth, Hot Insertion 10-Bit, 2-Port, Bus Switch
Product Features
Near-zero propagation delay Low noise, 25 version (PI3C32384) 5 switches connect inputs to outputs (PI3C3384) High Bandwidth (>400 MHz) Permits Hot Insertion. Rail-to-Rail, 3.3V or 2.5V Switching 5V I/O Tolerant 2.5V Supply Voltage Operation Packages available: 24-pin 150-mil wide plastic QSOP (Q) 24-pin 173-mil wide plastic TSSOP (L)
Product Description
Pericom Semiconductors PI3C series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry performance. The PI3C3384, and PI3C32384 are 2.5V or 3.3Volt, high bandwidth 10-bit, 2-port bus switches 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. Two bus enable signals are provided, one for each of the upper and lower five bits of the two 10-bit buses. The PI3C32384 is designed with an internal 25 resistor reducing noise reflection in high-speed applications.
Applications
High Bandwidth Data switching Hot Docking
Product Pin Configuration
BEA B0 A0 A1 B1 B2 A2 A3 B3 B4 A4 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 VCC B9 A9 A8 B8 B7 A7 A6 B6 B5 A5 BEB
24-Pin L,Q
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Truth Table(1)
Function BEA BEB B0-B4 B5-B9 Disconnect H H Hi-Z Hi-Z Connect L H A0-A4 Hi-Z Connect H L Hi-Z A5-A9 Connect L L A0-A4 A5-A9 Note: 1. H = High Voltage Level, X = Dont Care, L = Low Voltage Level, Hi-Z = High Impedance
1
Product Pin Description
Pin Name BEA, BEB A0 - A9 B0 - A9 GND VCC Description Bus Enable Inputs (Active LOW) Bus A Bus B Ground Power
PS8161C
02/04/00
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PI3C3384/PI3C32384 (25) 2.5V/3.3V, High Bandwidth, Hot Insertion, 10-Bit, 2-Port 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 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 Input 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 Operating Range, TA = 40C to +85C, VCC = 3.3V 10%)
Parame te rs VIH VIL IIH IIL IOZH VIK De s cription Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Te s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN
=
M in. 2.0 0.5
Typ.(2) 0.73 5 28 8 35
M ax. 0.8 1 1 1 1.2 7 40 15 48
Units V
GND
A
High- Impedence Output Current 0 A, B VCC Clamp diode Voltage VCC = Min., IIN = 18mA VCC = Min.,VIN = 0.0V ION = 48mA or 64mA VCC = Min.,VIN = 2.4V ION = 15mA PI3C3384 PI3C32384 PI3C3384 PI3C32384
V
18 18
RON
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 5.0 10.0 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.
2
PS8161C
02/04/00
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PI3C3384/PI3C32384 (25) 2.5V/3.3V, High Bandwidth, Hot Insertion, 10-Bit, 2-Port BusSwitch
Power Supply Characteristics
Parame te rs ICC ICC De s cription Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Te s t Conditions (1) VCC = Max., PI3C3384 VIN = GND or VCC PI3C32384 VCC = Max., VIN = 3.0V(3) M in. Typ.(2) 260 M ax. 500 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.
PI3C3384/PI3C32384 Switching Characteristics over 3.3V Operating Range
PI3C3384 Parame te rs D e s cription
(2,3)
PI3C32384 Com. M in. 1.5 1.5 M ax. 1.25 6.5 5.5 ns Units
Conditions
(1)
Com. M in. M ax. 0.25 6.5 5.5
tPLH tPHL tPZH tPZL tPHZ tPLZ
Propogation Delay Ax to Bx, Bx to Ax Bus Enable Time BEx to Ax or Bx Bus Disable Time BEx to Ax or Bx
CL = 50pF RL = 500 CL = 50pF RL = 500 R = 500
1.5 1.5
PI3C3384/PI3C32384 Switching Characteristics over 2.5V Operating Range
PI3C3384 Parame te rs D e s cription Propogation 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)
PI3C32384 Com. M in. 1.5 1.5 M ax. 1.25 9.8 8.3 ns Units
Com. M in. M ax. 0.25 9.8 8.3
tPLH tPHL tPZH tPZL tPHZ tPLZ
CL = 50pF RL = 500 CL = 50pF RL = 500 R = 500
1.5 1.5
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.
3
PS8161C
02/04/00
VOUT, (V)
Ordering Information
Part PI3C3384L PI3C3384Q Pin - Package 24 - TSSOP (L) 24 - QSOP (Q ) Dime ns ions 40C to +85C 40C to +85C
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PI3C3384/PI3C32384 (25) 2.5V/3.3V, High Bandwidth, Hot Insertion, 10-Bit, 2-Port BusSwitch
4.0
VCC = 3.3V 3.1V 2.9V 2.7V 2.5V 2.3V
3.8V 3.6V 3.4V 3.2V 3.0V 2.8V
2.0
0.0 0.0
1.0
2.0 VIN, (V)
3.0
4.0
5.0
Output Voltage vs. Input Voltage over Various Supply Voltages
Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
4
PS8161C 02/04/00

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