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PI5C34X383/PI5C34X2383
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
32-Bit BusSwitch/Exchange
Product Features:
* Near-zero propagation delay * Low noise, 25 version (PI5C32383) * 5 switches connect inputs to outputs (PI5C3383) * Direct bus connection when switches are ON * Ultra-low quiescent power (0.2 A typical) - Ideally suited for notebook applications * Packages available: - 80-pin 150-mil wide plastic QSOP (B)
Product Description:
Pericom Semiconductor's PI5C series of logic circuits are produced in the Company's advanced 0.8 micron CMOS technology, achieving industry leading performance. The PI5C34X383 and PI5C34X2383 are 32-bit bus switches with exchange 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, and the Bus Exchange (BX) input signal offers nibble swapping of the AB and CD pairs of signals. This exchange configuration allows byte swapping of buses in systems. It can also be used as a quad 2-to-1 multiplexer and to create low delay barrel shifters, etc. The PI5C34X2383 is designed with an internal 25 resistor reducing noise reflection in high-speed applications.
Logic Block Diagram
A0
C0
A4
C4
B0
D0
B4
D4
Applications:
16-wide 2:1 MUX, Byte Swapping, and Hot Insertion.
A3
C3
A7
C7
Truth Table(1)
Function Disconnect Connect Exchange BEN H L L BXn X L H A0-A15 Hi-Z C0-C15 D0-D15 B0-B15 Hi-Z D0-D15 C0-C15
B3
D3
B7
D7
BX1 BE1 BX2 BE2
Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Hi-Z = High Impedance
A8
C8
A12
C12
B8
D8
B12
D12
A11
C11 A15
C15
B11
D11 B15
D15
BX1 BE1 BX2 BE2
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Product Pin Configuration
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PPI5C34X383/PI5C34X2383 32-BIT BusSwitch/EXCHANGE
Product Pin Description
Pin Name Description Bus Enable Input (Active LOW) Bus Exchange Input Bus A Bus B Bus C Bus D Ground Power BEn BXn Ax Bx Cx Dx GND VCC
BE1 C0 A0 B0 D0 C1 A1 B1 D1 GND BE2 C4 A4 B4 D4 C5 A5 B5 D5 GND BE3 C8 A8 B8 D8 C9 A9 B9 D9 GND BE4 C12 A12 B12 D12 C13 A13 B13 D13 GND
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 29 30 31 32 33 34 35 36 37 38 39 40
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64
Vcc D3 B3 A3 C3 D2 B2 A2 C2 BX1 Vcc D7 B7 A7 C7 D6 B6 A6 C6 BX2 Vcc D11 B11 A11 C11 D10 B10 A10 C10 BX3 Vcc D15 B15 A15 C15 D14 B14 A14 C14 BX4
80-Pin 62 B80
61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
63
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PI5C34X383/PI5C34X2383 32-BIT BusSwitch/EXCHANGE
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) Input Hysteresis at Control Pins Switch On Resistance
(4)
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND 0 - AB, CD - VCC VCC = Min., IIN = -18 mA AB (CD) = 0V, CD (AB) = VCC VCC = Min., VIN = 0.0V, ION = 48 mA VCC = Min., VIN = 2.4V, ION = 15 mA PI5C3383 PI5C32383 PI5C3383 PI5C32383
Min. 2.0 -0.5 -- -- -- -- 100 -- -- 18 -- 18
Typ(2) -- -- -- -- -- - 0.7 -- 150 5 28 10 35
Max. -- 0.8 1 1 1 - 1.2 -- -- 7 40 15 48
Units V V A A A V mA mV
Capacitance (TA = 25C, f = 1 MHz)
Parameters(5) CIN COFF CON Description Input Capacitance AB/CD Capacitance, Switch Off AB/CD 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 AB and CD pin at indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (A or B, C or D) pins. 5. This parameter is determined by device characterization but is not production tested.
205
PS8120
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PPI5C34X383/PI5C34X2383 32-BIT BusSwitch/EXCHANGE
Power Supply Characteristics
Parameters Description ICC ICC ICCD Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) Test Conditions(1) VCC = Max. VCC = Max. VCC = Max., AB and CD Pins Open BE = GND Control Input Toggling 50% Duty Cycle VIN = GND or VCC VIN = 3.4V(3) Min. -- -- -- Typ(2) 0.1 -- -- Max. 3.0 2.5 0.25 Units A mA mA/ MHz
Notes: 1. For conditions shown as Max. or Min., 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, B, C, and D 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, B, C, and D inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
PI5C34X383 Switching Characteristics over Operating Range
PI5C34X383 Com Typ Max 0.25 -- -- -- -- 6.5 5.5 6.5
Parameters Description tPLH tPHL tPZH tPZL tPHZ tPLZ tBX Propagation Delay Ax to Cx, Bx to Dx Bus Enable Time BE to Cx or Dx Bus Disable Time BE to Cx or Dx Bus Exchange Time BX to Cx or Dx
(2,3)
Conditions(1) CL = 50 pF RL = 500
Min -- 1.5 1.5 1.5
Unit ns 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.
206
PS8120
08/6/97
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C34X383/PI5C34X2383 32-BIT BusSwitch/EXCHANGE
PI5C34X2383 Switching Characteristics over Operating Range
PI5C34X2383 Com Typ Max 1.25 -- -- -- -- 6.5 5.5 6.5
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tBX
Description Propagation Delay(2,3) Ax to Cx, Bx to Dx Bus Enable Time BE to Cx or Dx Bus Disable Time BE to Cx or Dx Bus Exchange Time BX to Cx or Dx
Conditions(1) CL = 50 pF RL = 500
Min -- 1.5 1.5 1.5
Unit ns 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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