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IDTQS32861 HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH(R) PRODUCTS HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
.EATURES:
* * * * Enhanced N channel FET with no inherent diode to Vcc Near zero ground bounce Undershoot clamp diodes on all switch and control inputs Available in QSOP and SOIC packages
IDTQS32861
DESCRIPTION:
The QS32861 provides a set of ten high speed CMOS, TTL-compatible bus switches. The Bus Enable (BE) signal turns the switches on. The QS32861 includes internal 25 series termination resistors to reduce reflection noise in high speed applications. When closed, the switch acts as the source (series) termination for the driver connected to it. The QS32861 is characterized for operation at -40C to +85C.
APPLICATIONS:
* * * * * * Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Power conservation Capacitance reduction and isolation Clock gating Bus isolation
.UNCTIONAL BLOCK DIAGRAM
A0
B0
A9
B9
BE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
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c 2002 Integrated Device Technology, Inc.
MARCH 2002
DSC-5757/2
IDTQS32861 HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
INDUSTRIAL TEMPERATURE RANGE
PIN CON.IGURATION
NC A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 GND 1 2 3 4 5 6 7 8 9 10 11 12
QSOP/ SOIC TOP VIEW
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM(2) 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
24 23 22 21 20 19 18 17 16 15 14 13
VCC BE B0 B1 B2 B3 B4 B5 B6 B7 B8 B9
VTERM(3) VTERM(3) VAC IOUT PMAX TSTG
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
(TA = +25C, f = 1.0MHZ, VIN = 0V, VOUT = 0V)
Pins Control Pins Quickswitch Channels (Switch OFF) Typ. 3 5 Max. (1) 5 7 Unit pF pF
NOTE: 1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names BE A0 - A9 B0 - B9 Bus Enable Bus A Bus B Description
.UNCTION TABLE(1)
BE H L
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedance
A0 - A9 Hi-Z B 0 - B9
2A, 2Y I/Os Disconnect Connect
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IDTQS32861 HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
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(3) VP Parameter Input HIGH Level Input LOW Level Off-State Output Current (Hi-Z) Switch ON Resistance Pass Voltage(2) Test Conditions Guaranteed Logic HIGH for Control Pins Guaranteed Logic LOW for Control Pins 0V VOUT VCC, Switches OFF VCC = Min., VIN = 0V, ION = 30mA VCC = Min., VIN = 2.4V, ION =15mA VIN = VCC = 5V, IOUT = -5A Min. 2 -- -- -- 15 18 3.7 Typ.(1) -- -- 0.01 0.01 20 25 4 Max. -- 0.8 1 1 35 40 4.2 Unit V V A A V
Input LeakageCurrent (Control Inputs)(2) 0V VIN VCC
NOTES: 1. Typical values are at VCC = 5.0V, TA = 25C. 2. Pass Voltage is guaranteed but not production tested. 3. ROUT changed on March 8, 2002. See rear page for more information.
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
80
RON
(ohms)
70 60 50 40 30 20 10 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
VIN
(Volts)
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IDTQS32861 HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol ICCQ ICC ICCD Parameter Quiescent Power Supply Current Power Supply Current per Control Input HIGH Dynamic Power Supply Current per MHz(4) Test Conditions(1) VCC = Max., VIN = GND or Vcc, f = 0 VCC = Max., VIN = 3.4V(3), f = 0 VCC = Max., A and B pins open BE Input Toggling at 50% Duty Cycle
NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Typical values are at VCC = 5.0V, 25C ambient. 3. Per TLL 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 represents the current required to switch internal capacitance at the specified frequency. The A and B pins generate no significant AC or DC currents as they transition. This parameter is guaranteed but not production tested.
Typ(2) 0.2 -- --
Max. 3 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 tPZH tPZL tPHZ tPLZ Data Propagation Delay (2,4) A to B or B to A Switch Turn-on Delay BE to A or B Switch Turn-off Delay (2) BE to A or B 1.5 -- 5.5
ns
Parameter
Min. (1) -- 1.5
Typ. -- --
Max. 1.25(3) 7.5
Unit
ns
ns
NOTES: 1. Minimums are guaranteed but not production tested. 2. This parameter is guaranteed but not production tested. 3. The time constant for the switch alone is of the order of 1.25ns for CL = 50pF. 4. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. 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.
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IDTQS32861 HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
INDUSTRIAL TEMPERATURE RANGE
ORDERING IN.ORMATION
IDTQS XXXXX Device Type XX Package X Process
Blank
Industrial (-40C to +85C)
SO Q
Small Outline IC Quarter-Size Outline Package
32861
High Speed CMOS 10-Bit Bus Switch with Flow-Through Pinout
As per PCN L0201-02, the Output Resistance (RON) specifications have changed as of March 8, 2002. The original specifications were:
Parameter RON Description VCC = Min, VIN = 0V, ION = 30mA VCC = Min, VIN = 2.4V, ION = 15mA Min. 20 20 Typ. 28 35 Max. 40 48 Unit
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