View IDTQS33X257Q1_572065.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH(R) PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX
FEATURES:
* * * * * * * *
IDTQS33X257
DESCRIPTION:
Enhanced N channel FET with no inherent diode to Vcc Bidirectional signal flow 24:12 Mux/Demux switches connect inputs to outputs Individual controls for each bank Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs TTL-compatible control inputs Available in 48-pin QVSOP package
APPLICATIONS:
* * * * *
The QS33X257 is a high-speed CMOS TTL-compatible 24:12 multiplexer/demultiplexer. The QS33X257 is functionally compatible to three of the QuickSwitch version of the 74F257, 74FCT257, and the 74ALS/AS/ LS257 Quad 2:1 multiplexers. The low ON resistance of the QS33X257 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. This part will be used in wide bus multiplexing where board space is at a premium. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS33X257 is characterized for operation at -40C to +85C.
Logic replacement Video, audio, graphics switching, muxing Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Bus funneling
FUNCTIONAL BLOCK DIAGRAM
S0 S2
E0 I0 A YA I1 A I0 B YB I1 B I0 C YC I1 C I0 D YD I1 D
E2 I0 I YI I1 I I0 J YJ I1 J I0 K YK I1K I0 L YL I1 L
S1
E1 I0E YE I1E I0F YF I1F I0G YG I1G I0H YH I1H
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c 2000 Integrated Device Technology, Inc.
MARCH 2000
DSC-5763/1
IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
S0 I0A I1A YA I0B I1B YB G ND S1 I0E I1E YE I0F I1F YF G ND S2 I0I I1I YI I0J I1J YJ G ND 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
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 Max. Sink Current/Pin Maximum Power Dissipation 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
E0
I0D I1D YD I0C I1C YC VCC
E1
I0H I1H YH I0G I1G YG VCC
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 Quickswitch Channels (Switch OFF)
(TA = +25C, f = 1.0MHZ, VIN = 0V, VOUT = 0V)
Typ. 4 Demux Mux 5 9 Max.(1) 5 7 10 Unit pF pF
E2
I0L I1L YL I0K I1K YK
NOTE: 1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names Ixx Sx Ex Yx I/O I/O I I/O I/O Data Inputs Select Input Enable Input Data Outputs Description
QVSOP TOP VIEW
FUNCTION TABLE(1)
Enable Ex H L L Sx X L H YA Z I0A I1A Outputs YB Z I0B I1B YC Z I0C I1C YD Z I0X I1X Function Disable Select 0 Select 1
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedance
2
IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX
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 Pass Voltage(2) Test Conditions Guaranteed Logic HIGH for Control Pins Guaranteed Logic LOW for Control Pins 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) -- -- -- -- 5 10 4 Max. -- 0.8 1 1 7 15 4.2 Unit V V A A V
NOTES: 1. Typical values are at VCC = 5.0V, TA = 25C. 2. 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
IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX
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., I and Y 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). I and Y 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 I and Y inputs generate no significant AC or DC currents as they transition. This parameter is guaranteed but not production tested.
Max. 9 1.5 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 tPLZ tPHZ Data Propagation Delay (2,3) Ix to Y Switch Turn-on Delay Sx to Y Switch Turn-off Delay Ex to Y Switch Turn-off Delay (2) Ex to Y, Sx to Y 0.5 -- 5
ns
Parameter
Min. (1) -- 0.5 0.5
Typ. 0.25 -- --
Max. -- 5.2 4.8
Unit
ns ns 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 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.
4
IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XXXXX Device Type XX Package X Process
Blank
Industrial (-40C to +85C)
Q1
QVSOP
33X257
High Speed CMOS Quickswitch 24:12 Mux/Demux
CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054
for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com
for Tech Support: logichelp@idt.com (408) 654-6459
5

▲Up To Search▲

Price & Availability of IDTQS33X257Q1

	To Download IDTQS33X257Q1 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .