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IDTQS316214 HIGH-SPEED CMOS 12-BIT 3-TO-1 BUS-SELECT SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH(R) PRODUCTS HIGH-SPEED CMOS 12-BIT 3-TO-1 BUS-SELECT SWITCH
FEATURES:
* * * * * * Enhanced N channel FET with no inherent diode to Vcc 5 bidirectional switches connect inputs to outputs Zero propagation delay, zero ground bounce TTL-compatible input and output levels Undershoot clamp diodes on all switch and control inputs Available in SSOP and TSSOP packages
IDTQS316214
DESCRIPTION:
APPLICATIONS:
* Video, audio, graphics switching, muxing * Hot-swapping, hot-docking * Voltage translation (5V to 3.3V)
The QS316214 provides a set of twelve high-speed CMOS TTLcompatible buses switching between three separate ports. The low ON resistance of the QS316214 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. The device operates as a 12-bit bus-select through the data-select (S0-S2) terminals. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS316214 is characterized for operation at -40C to +85C.
FUNCTIONAL BLOCK DIAGRAM
One of 12 Channels
1A 1B 1
1B 3 1B 2
Flow Control S0 S1 S2
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-5567/1
IDTQS316214 HIGH-SPEED CMOS 12-BIT 3-TO-1 BUS-SELECT SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
S0
1A 1B3 2A 2B3 3A 3B3
ABSOLUTE MAXIMUM RATINGS(1)
Symbol 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 0.93 -65 to +150 Unit V V V V mA W C
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
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
S1 S2
1B1 1B2 2B1 2B2 3B1
VTERM(2) VTERM(3) VTERM(3) VAC IOUT PMAX TSTG
GND
4A 4B3 5A 5B3 6A 6B3 7A 7B3
GND
3B2 4B1 4B2 5B1 5B2 6B1 6B2 7B1 7B2 8B1
NOTES: 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 = 1MHz, VIN = 0V, VOUT = 0V)
Pins Control Inputs Quickswitch Channels (Switch OFF) Demux Mux Typ. 5 10 6 Max. (1) 5.5 12 7 Unit pF pF
NOTE: 1. This parameter is guaranteed but not production tested.
VCC
8A
PIN DESCRIPTION
Pin Names
1A - 12A 1Bx
I/O I/O I/O I Bus A Bus B Data Select
Description
GND
8B3 9A 9B3 10A 10B3 11A 11B3 12A 12B3
GND
8B2 9B1 9B2 10B1 10B2 11B1 11B2 12B1 12B2
-
12Bx
S0 - S2
FUNCTION TABLE(1)
S2 L L L L H H H H S1 L L H H L L H H S0 L H L H L H L H xA Z xB1 xB2 Z Z xB3 xB1 xB2 Function Disconnect xA to xB1 xA to xB2 Disconnect Disconnect xA to xB3 xA to xB1 xA to xB2
SSOP/ TSSOP TOP VIEW
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedance
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IDTQS316214 HIGH-SPEED CMOS 12-BIT 3-TO-1 BUS-SELECT SWITCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5V 10%
Symbol VIH VIL IIN IOZ RON VP Parameter Input HIGH Voltage Input LOW Voltage Input Leakage Current (Control Inputs) Off-State Current (Hi-Z) Switch ON Resistance Pass Voltage(2) Test Conditions Guaranteed Logic HIGH for Control Inputs Guaranteed Logic LOW for Control Inputs 0V VIN VCC 0V VOUT VCC VCC = Min., VIN = 0V, ION = 30mA VCC = Min., VIN = 2.4V, ION = 15mA VIN = VCC = 5V, IOUT = -5A Min. 2 -- -- -- -- -- 3.7 Typ.(1) Max. -- -- -- -- 5 10 4 -- 0.8 1 1 7 12 4.2 V Unit V V A A
NOTES: 1. Typical values are at VCC = 5V and TA = 25C. 2. Pass voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
16
RON
(ohms)
14 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5
VIN
(Volts)
2.0
2.5
3.0
3.5
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IDTQS316214 HIGH-SPEED CMOS 12-BIT 3-TO-1 BUS-SELECT 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 and B Pins Open, Control Inputs Toggling @ 50% Duty Cycle Max. 3 2.5 0.25 Unit A mA mA/MHz
NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per TTL-driven input (VIN = 3.4V). A and B 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 and B inputs generate no significant AC or DC currents as they transition. This parameter is guaranteed but not production tested.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40C to +85C, VCC = 5V 10% CLOAD = 50pF, RLOAD = 500 unless otherwise noted.
Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ Parameter Data Propagation Delay(2) xA to xBx, xBx to xA Switch Turn-On Delay Sx to xA, xBx Switch Turn-Off Delay(2) Sx to xA, xBx 1.5 1.5 6.5 5.8 ns ns Min. (1) Typ. Max. 0.25(3) Unit ns
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 at 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.
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IDTQS316214 HIGH-SPEED CMOS 12-BIT 3-TO-1 BUS-SELECT SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XXXXX Device Type XX Package
PV PA
Shrink Small Outline Package Thin Shrink Small Outline Package
316214
High Speed CMOS 12-Bit 3-to-1 Bus-Select Switch
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