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Details, datasheet, quote on part number:QS32253
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Datasheet text preview:
QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX
FEATURES/BENEFITS
· · · · · · · · Enhanced N channel FET with no inherent diode to VCC 5 bidirectional switches connect inputs to outputs Pin compatible with the 74F253, 74FCT253, and 74FCT253T Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control pins TTL-compatible control inputs QS32253 is 25 version for low noise Available in SOIC (S1), QSOP
QS3253 QS32253
DESCRIPTION
The QS3253 is a high-speed CMOS TTL-compatible dual 4:1 multiplexer/demultiplexer with 3-state outputs. The QS3253 is function and pinout compatible version of the 74F253, 74FCT253, and the 74ALS/AS/LS253 dual 4:1 multiplexers. The low ON resistance of the QS3253 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. The QS32253 has 25 series resitors to reduce ground bounce noise. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices.
APPLICATIONS
· Logic replacement · Video, audio, graphics switching, muxing · Hot-swapping, hot-docking (Application Note AN-13) · Voltage translation (5V to 3.3V; Application Note AN-11) · Bus funneling
FUNCTIONAL BLOCK DIAGRAM
S0 S1 EA EB
I0 A YA I1 A I2 A I3 A I0 B YB I1 B I2 B I3 B
OCTOBER 1999
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© 1999 Integrated Device Technology, Inc DSC-XXXXXX
QS3253 AND QS32253
IDT
PIN CONFIGURATION
Name IXX S0, S1 EA, EB YA, YB I/O I I I O Description Data Inputs Select Inputs Enable Inputs Data Outputs
EA S1 I3 A I2 A I1 A I0 A 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 V CC EB S0 I3 B I2 B I1 B I0 B YB
(ALL PINS TOP VIEW) SOIC (S1), QSOP
FUNCTION TABLE
Enable EA H X L L L L EB X H L L L L S1 X X L L H H Select S0 X X L H L H Outputs YA Hi-Z X I0A I1A I2A I3A YB X Hi-Z I0B I1B I2B I3B Function Disable A Disable B S1-0 = 0 S1-0 = 1 S1-0 = 2 S1-0 = 3
YA GND
ABSOLUTE MAXIMUM RATINGS
Supply Voltage to Ground .... 0.5V to +7.0V DC Switch Voltage VS .......... 0.5V to +7.0V DC Input Voltage VIN ...... 0.5V to +7.0V AC Input Voltage (for a pulse width 20ns) .......... 3.0V DC Output Current Max. Sink Current/Pin .. 120mA Maximum Power Dissipation .......... 0.5 watts TSTG Storage Temperature ........... 65° to +150°C
Note: ABSOLUTE MAXIMUM CONTINUOUS RATINGS are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute-maximum conditions is not implied.
CAPACITANCE
TA = 25°C, f = 1MHz, VIN = 0V, VOUT = 0V Pins Control Inputs QuickSwitch Channels (Switch OFF) Demux Mux SOIC, QSOP Typ Max 4 5 14 5 7 16 Unit pF pF pF
Note: Capacitance is guaranteed, but not production tested and are typical values. For total capacitance while the switch is ON, please see Section 1 under "Input and Switch Capacitance."
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© 1999 Integrated Device Technology, Inc DSC-XXXXXX
QS3253 AND QS32253
IDT
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
TA = 40°C to +85°C, VCC = 5.0V ± 5% Symbol VIH VIL | I IN | | IOZ | RON RON VP Parameter Input HIGH Voltage Input LOW Voltage Input Leakage Current (Control Inputs) Off-State Current (Hi-Z) Switch On Resistance
(2)
Test Conditions Guaranteed Logic HIGH for Control Pins Guaranteed Logic LOW for Control Pins 0V VIN VCC 0V VOUT VCC VCC = Min., VIN = 0.0V ION = 30mA VCC = Min., VIN = 2.4V ION = 15mA VIN = VCC = 5V, IOUT = 5µ A QS3253 QS32253 QS3253 QS32253
Min 2.0 -- -- -- -- 20 -- 20 3.7
Typ(1) -- -- -- -- 5 28 10 35 4.0
Max -- 0.8 1 1 7 40 15 48 4.2
Unit V V µA µA V
Switch On Resistance(2) Pass Voltage(3)
N o t e s: 1. Typical values indicate VCC = 5.0V and TA = 25°C. 2. For a diagram explaining the procedure for RON measurement, please see Section 1 under "DC Electrical Characteristics." RON guaranteed, but not production tested. 3. Pass voltage is guaranteed, but not production tested.
TYPICAL ON RESISTANCE VS. VIN AT VCC = 5.0V (QS3253)
16 14 12 10 8 6 4 2 0 0.0
RON (ohms)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
VIN (Volts)
Note: For QS32253, add 23 to RON shown.
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© 1999 Integrated Device Technology, Inc DSC-XXXXXX
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