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IDTQS3253
HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE
FEBRUARY 2006
2011 Integrated Device Technology, Inc. DSC-5755/7c
IDTQS3253
INDUSTRIAL TEMPERATURE RANGE
FUNCTIONAL BLOCK DIAGRAM
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FEATURES:
• Enhanced N channel FET with no inherent diode to Vcc
•5
ΩΩ
ΩΩ
Ω 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 inputs
• TTL-compatible control inputs
• Available in QSOP and S1 packages
APPLICATIONS:
• Logic replacement
• Video, audio, graphics switching, muxing
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Power conservation
• Bus funneling
QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS
QUICKSWITCH
DUAL 4:1 MUX/DEMUX
DESCRIPTION:
The QS3253 is a high-speed CMOS TTL-compatible dual 4:1 multi-
plexer/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.
Mux/Demux devices provide an order of magnitude faster speed than
equivalent logic devices.
The QS3253 is characterized for operation at -40°C to +85°C.
S0
YA
I0A
I1A
YB
S1
EA
EB
I2A
I3A
I0B
I1B
I2B
I3B
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INDUSTRIAL TEMPERATURE RANGE
IDTQS3253
HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX
PIN CONFIGURATION
QSOP/ S1
TOP VIEW
Symbol Description Max Unit
VTERM(2) Supply Voltage to Ground –0.5 to +7 V
VTERM(3) DC Switch Voltage Vs –0.5 to +7 V
VTERM(3) DC Input Voltage VIN –0.5 to +7 V
VAC AC Input Voltage (pulse width ≤ 20ns) –3 V
IOUT DC Output Current 120 mA
PMAX Maximum Power Dissipation (TA = 85°C) 0.5 W
TSTG Storage Temperature –65 to +150 °C
ABSOLUTE MAXIMUM RATINGS(1)
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.
Pins Typ. Max. (1) Unit
Control Inputs 4 5 pF
Quickswitch Channels Demux 5 7 pF
(Switch OFF) Mux 14 16
CAPACITANCE (TA = +25°C, f = 1MHz, VIN = 0V, VOUT = 0V)
NOTE:
1. This parameter is guaranteed but not production tested.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
EA
S1
I3A
I2A
I1A
I0A
YA
GND
VCC
EB
S0
I3B
I2B
I1B
I0B
YB
FUNCTION TABLE(1)
Enable Select Outputs
EA EB S1S0YAYBFunction
H X X X Hi-Z X Disconnected
X H X X X Hi-Z Disconnected
LLLLI0A I0B S1 - 0 = 0
LL L H I1A I1B S1 - 0 = 1
LL H L I2A I2B S1 - 0 = 2
LL H H I3A I3B S1 - 0 = 3
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High-Impedence
PIN DESCRIPTION
Pin Names I/O Description
I x x I Data Inputs
S0 - S2I Select Inputs
EA, EB I Enable Input
YA, YB O Data Output
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IDTQS3253
HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE
RON
(ohms)
VIN
(Volts)
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
Symbol Parameter Test Conditions Min. Typ.(1) Max. Unit
VIH Input HIGH Level Guaranteed Logic HIGH for Control Pins 2 — — V
VIL Input LOW Level Guaranteed Logic LOW for Control Pins — — 0.8 V
IIN Input LeakageCurrent (Control Inputs) 0V ≤ VIN ≤ VCC —— ±1μA
IOZ Off-State Output Current (Hi-Z) 0V ≤ VOUT ≤ VCC —— ±1μA
RON Switch ON Resistance VCC = Min., VIN = 0V, ION = 30mA — 5 7 Ω
VCC = Min., VIN = 2.4V, ION =15mA — 10 15
VPPass Voltage(2) VIN = VCC = 5V, IOUT = -5μA 3.7 4 4.2 V
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%
NOTES:
1. Typical values are at VCC = 5.0V, TA = 25°C.
2. Pass Voltage is guaranteed but not production tested.
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
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INDUSTRIAL TEMPERATURE RANGE
IDTQS3253
HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX
POWER SUPPLY CHARACTERISTICS
Symbol Parameter Test Conditions(1) Max. Unit
ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or Vcc, f = 0 3 μA
ΔICC Power Supply Current per Control Input HIGH (2) VCC = Max., VIN = 3.4V, f = 0 1.5 mA
ICCD Dynamic Power Supply Current per MHz(3) VCC = Max., I and Y pins open 0.25 mA/MHz
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 ΔIcc.
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.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C, VCC = 5.0V ± 5%;
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
Symbol Parameter Min. (1) Typ. Max. Unit
tPLH Data Propagation Delay (2,3) — — 0.25 ns
tPHL Ix to Y
tPZL Switch Turn-on Delay 0.5 — 6.6 ns
tPZH Sx to Y
tPZL Switch Turn-on Delay 0.5 — 6 ns
tPZH Ex to Y
tPLZ Switch Turn-off Delay (2) 0.5 — 6 ns
tPHZ Ex to Y, Sx to Y
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.
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IDTQS3253
HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
QS XXXXX XX
Package
Device Type
Quarter Size Outline Package - Green
Small Outline IC - Green
QG
S1G
3253 High Speed CMOS Quickswitch Dual 4:1
Mux/Demux
X
Blank
8
Tube or Tray
Tape and Reel
CORPORATE HEADQUARTERS for SALES: for Tech Support:
6024 Silver Creek Valley Road 800-345-7015 or 408-284-8200 logichelp@idt.com
San Jose, CA 95138 fax: 408-284-2775
www.idt.com
Datasheet Document History
02/14/2011 Pg. 5 Updated the ordering information by removing the "IDT" notation, non RoHS part and by adding
Tape and Reel information.
