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IDTQS32XL383 HIGH-SPEED LOW POWER 20-BIT BUS EXCHANGE SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH(R) PRODUCTS HIGH-SPEED LOW POWER 20-BIT BUS EXCHANGE SWITCH
FEATURES:
* * * * * * *
IDTQS32XL383
Enhanced N channel FET with no inherent diode to Vcc 5 bidirectional switches connect inputs to outputs Zero propagation delay, zero ground bounce Ultra low power with 0.2A typical Icc Undershoot clamp diodes on all switch and control inputs Bus exchange allows nibble swap Available in 48-pin QVSOP package
The QS32XL383 provides two sets of ten high-speed CMOS TTLcompatible bus switches. The low ON resistance of the QS32XL383 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. The Bus Enable (BE) signal turns the switches on. The Bus Exchange (BX) signal provides nibble swap 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 10-wide 2-to1 multiplexer and to create low delay barrel shifters, etc. The QS32XL383 is characterized for operation at -40C to +85C.
DESCRIPTION:
APPLICATIONS:
* * * * *
Resource sharing Crossbar switching Bus Isolation Hot-docking Voltage translation (5V to 3.3V)
FUNCTIONAL BLOCK DIAGRAM
A0 C0 A5 C5
B0
D0
B5
D5
A4
C4
A9
C9
B4
D4
B9
D9
B XA B EA BXB BEB
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
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c 1999 Integrated Device Technology, Inc.
NOVEMBER 1999
DSC-5575/1
IDTQS32XL383 HIGH-SPEED LOW POWER 20-BIT BUS EXCHANGE SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
BEA C0 A0 B0 D0 C1 A1 B1 D1 C2 A2 GND BEB C5 A5 B5 D5 C6 A6 B6 D6 C7 A7 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 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 VCC D4 B4 A4 C4 D3 B3 A3 C3 D2 B2 BXA VCC D9 B9 A9 C9 D8 B8 A8 C8 D7 B7 BXB
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM(2) VTERM(3) VTERM(3) VAC IOUT PMAX TSTG Description Supply Voltage to Ground DC Switch Voltage Vs DC Input Voltage VIN AC Input Voltage (pulse width 20ns) DC Output Current Maximum Power Dissipation (TA = 85C) Storage Temperature Max -0.5 to +7 -0.5 to +7 -0.5 to +7 -3 120 0.5 -65 to +150 Unit V V V V mA W C
NOTE: 1. Stresses greater than those listed under ABSOLUTE 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. 2. Vcc terminals. 3. All terminals except Vcc.
CAPACITANCE
Pins Control Pins
(TA = +25C, f = 1.0MHZ, VIN = 0V, VOUT = 0V)
Typ. 3 5 Max.(1) 5 7 Unit pF pF
Quickswitch Channels (Switch OFF)
NOTE: 1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names Ax, Bx Cx, Dx BEx BXx I/O I/O I/O I I Buses A, B Buses C, D Bus Switch Enable Bus Exchange Description
QVSOP TOP VIEW
FUNCTION TABLE(1)
BEA H L L BEB H L L BXA X L H BXB X L H A0 - A4 Z C0 - C4 D0 - D4 A5 - A9 Z C5 - C9 D5 - D9 B0 - B4 Z D0 - D4 C0 - C4 B5 - B9 Z D5 - D9 C5 - C9 Function Disconnect Connect Exchange Function Disconnect Connect Exchange
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedance
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IDTQS32XL383 HIGH-SPEED LOW POWER 20-BIT BUS EXCHANGE SWITCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5.0V 5%
Symbol VIH VIL IIN IOZ RON VP Parameter Input HIGH Level Input LOW Level Input LeakageCurrent (Control Inputs) Off-State Output Current (Hi-Z) Switch ON Resistance(2) Pass Voltage(3) Test Conditions Guaranteed Logic HIGH for Control Pins Guaranteed Logic LOW for Control Pins 0V VIN VCC. Control Inputs 0V VOUT VCC VCC = Min., VIN = 0V, ION = 30mA VCC = Min., VIN = 2.4V, ION =15mA VCC = 5V, IOUT = -5A Min. 2 -- -- -- -- -- 3.7 Typ.(1) -- -- 0.01 0.01 6 12 4 Max. -- 0.8 1 1 8 17 4.2 Unit V V A A V
NOTES: 1. Typical values are at VCC = 5.0V, TA = 25C. 2. Max value of RON is guaranteed but not production tested. 3. Pass Voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
RON
(ohms)
16 14 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
VIN
(Volts)
3
IDTQS32XL383 HIGH-SPEED LOW POWER 20-BIT BUS EXCHANGE SWITCH
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol ICCQ ICC ICCD Parameter Quiescent Power Supply Current Power Supply Current per Control Input HIGH (2) Dynamic Power Supply Current per MHz(3) Test Conditions(1) VCC = Max., VIN = GND or Vcc, f = 0 VCC = Max., VIN = 3.4V, f = 0 VCC = Max., A - D pins open Control Inputs Toggling at 50% Duty Cycle
NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per TLL driven input (VIN = 3.4V, control inputs only). A - D pins do not contribute to Icc. 3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A - D inputs generate no significant AC or DC currents as they transition. This parameter is guaranteed but not production tested.
Max. 6 2.5 0.25
Unit A mA mA/MHz
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40C to +85C, VCC = 5.0V 5%; CLOAD = 50pF, RLOAD = 500 unless otherwise noted.
Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ tBX Data Propagation Delay (2,3) AxBx to CxDx, CxDx to AxBx Switch Turn-on Delay BE to Ax, Bx, Cx, Dx Switch Turn-off Delay (2) BE to Ax, Bx, Cx, Dx Switch Multiplex Delay (2) BX to Ax, Bx, Cx, Dx
NOTES: 1. Minimums are guaranteed but not production tested. 2. This parameter is guaranteed but not production tested. 3. The bus switch contributes no propagation 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 CL = 50pF. Since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the system. Propagation 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.
Parameter
Min. (1) -- 1.5 1.5 1.5
Typ. -- -- -- --
Max. 0.25 6.5 5.5 6.5
Unit
ns ns ns ns
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IDTQS32XL383 HIGH-SPEED LOW POWER 20-BIT BUS EXCHANGE SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XXXXX XX Package Device Type X Process
Blank
Industrial (-40C to +85C)
Q1
48-Pin QVSOP
32XL383
High Speed Low Power 20-Bit Bus Exchange Switch
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