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PI5B3384/3384C/32384 (25) PI5C3384 10-BIT, 2-PORT BusSwitch
PI5C3384C PI5C32384 (25)
Product Features:
* Near-zero propagation delay * Low noise, 25 version (PI5C32384) * 5 switches connect inputs to outputs (PI5C3384) * Direct bus connection when switches are ON * Ultra-low quiescent power (0.2 A typical) - Ideally suited for notebook applications * Packages available: - 24-pin 300-mil wide plastic PDIP (P) - 24-pin 150-mil wide plastic QSOP (Q) - 24-pin 150-mil wide plastic TQSOP (R) - 24-pin 300-mil wide plastic SOIC (S)
10-Bit, 2-Port BusSwitch
Product Description:
Pericom Semiconductor's PI5C series of logic circuits are produced in the Company's advanced sub-micron CMOS technology, achieving industry performance. The PI5C3384, PI5C3384C, and PI5C32384 are 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 PI5C32384 is designed with an internal 25 resistor reducing noise reflection in high-speed applications.
Logic Block Diagram
A0 B0
Product Pin Configuration
A4
B4
A5
B5
A9
B9
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
BEA BEB
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
Truth Table(1)
Function Disconnect Connect Connect Connect Note: 1. H X L Hi-Z = = = = BEA H L H L BEB H H L L B0-B4 Hi-Z A0-A4 Hi-Z A0-A4 B5-B9 Hi-Z Hi-Z A5-A9 A5-A9
High Voltage Level Don't Care Low Voltage Level High Impedance
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PPI5B3384/3384C/32384 (25) 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 +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ....... -0.5V to +7.0V DC Input Voltage ......................................................................... -0.5V to +7.0V 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 = 5V 5%)
Parameters Description VIH VIL IIH IIL IOZH VIK IOS VH RON Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High-Impedance Output Current Clamp Diode Voltage Short Circuit Current
(3)
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND 0 A, B VCC VCC = Min., IIN = -18 mA A (B) = 0V, B (A) = VCC VCC = Min., VIN = 0.0V, ION = 48 mA VCC = Min., VIN = 2.4V, ION = 15 mA PI5C3384 PI5C3384C PI5C32384 PI5C3384 PI5C3384C PI5C32384
Min. 2.0 -0.5 -- -- -- -- 100 -- -- -- 20 -- -- 20
Typ(2) -- -- -- -- -- -0.7 -- 150 5 5 28 10 10 35
Max. -- 0.8 1 1 1 -1.2 -- -- 7 7 40 15 15 48
Units V V A A A V mA mV
Input Hysteresis at Control Pins Switch On Resistance
(4)
Capacitance (TA = 25C, f = 1 MHz)
Parameters(5) CIN COFF CON Description Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch On Test Conditions VIN = 0V VIN = 0V VIN = 0V Typ -- -- -- Max. 6 6 8 Units pF 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 = 5.0V, 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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PI5B3384/3384C/32384 (25) 10-BIT, 2-PORT BusSwitch
Power Supply Characteristics
Parameters Description ICC Quiescent Power Supply Current Test Conditions(1) VCC = Max., VIN = GND or VCC PI5C3384 PI5C32384 PI5C3384C ICC ICCD Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) VCC = Max., VIN = 3.4V(3) VCC = Max., A and B Pins Open BE1 or BE2 = GND Control Input Toggling 50% Duty Cycle Min. -- -- -- -- Typ(2) 0.1 60 -- -- Max. 3.0 100 2.5 0.25 Units A A mA mA/ MHz
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at Vcc = 5.0V, +25C ambient. 3. Per TTL driven input (VIN = 3.4V, 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.
PI5C3384/3384C Switching Characteristics over Operating Range
PI5C3384/3384C Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propagation Delay Ax to Bx, Bx to Ax Bus Enable Time BEX to Ax or Bx Bus Disable Time BEx to Ax or Bx
(2,3)
Conditions(1) CL = 50 pF RL = 500
Min -- 1.5 1.5
Typ 0.25 -- --
Max -- 6.5 5.5
Unit ns ns 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 0.25 ns for 50 pF 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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PS 7029A 03/13/96
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PPI5B3384/3384C/32384 (25) 10-BIT, 2-PORT BusSwitch
PI5C32384 Switching Characteristics over Operating Range
PI5C32384 Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propagation Delay Ax to Bx, Bx to Ax Bus Enable Time BEX to Ax or Bx Bus Disable Time BEx to Ax or Bx
(2,3)
Conditions(1) CL = 50 pF RL = 500
Min -- 1.5 1.5
Typ 1.25 -- --
Max -- 7.5 5.5
Unit ns ns 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 0.25 ns for 50 pF 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.
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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