Enhanced N channel FET with no inherent diode to Vcc
5Ω bidirectional switches connect inputs to outputs
Ω
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
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.
APPLICATIONS:
•
•
•
•
•
•
Logic replacement
Video, audio, graphics switching, muxing
Hot-swapping, hot-docking
Voltage translation (5V to 3.3V)
Power conservation
Bus funneling
FUNCTIONAL BLOCK DIAGRAM
S
0
S
1
EA
EB
I
0A
Y
A
I
1A
I
2A
I
3A
I
0B
Y
B
I
1B
I
2B
I
3B
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
c
2011 Integrated Device Technology, Inc.
FEBRUARY 2006
1
DSC-5755/7
IDTQS3253
HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
TERM
(2)
V
TERM
(3)
Description
Supply Voltage to Ground
DC Switch Voltage Vs
DC Input Voltage V
IN
AC Input Voltage (pulse width
≤
20ns)
DC Output Current
Maximum Power Dissipation (T
A
= 85°C)
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
EA
S
1
I
3A
I
2A
I
1A
I
0A
Y
A
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
EB
S
0
I
3B
I
2B
I
1B
I
0B
Y
B
V
TERM
(3)
V
AC
I
OUT
P
MAX
T
STG
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
(T
A
= +25°C, f = 1MHz, V
IN
= 0V, V
OUT
= 0V)
Pins
Typ.
4
Demux
Mux
5
14
Max.
(1)
5
7
16
Unit
pF
pF
QSOP/ S1
TOP VIEW
Control Inputs
Quickswitch Channels
(Switch OFF)
NOTE:
1. This parameter is guaranteed but not production tested.
PIN DESCRIPTION
Pin Names
Ixx
S
0
- S
2
EA, EB
YA, YB
I/O
I
I
I
O
Data Inputs
Select Inputs
Enable Input
Data Output
Description
FUNCTION TABLE
(1)
Enable
EA
H
X
L
L
L
L
EB
X
H
L
L
L
L
X
X
L
L
H
H
Select
S
1
S
0
X
X
L
H
L
H
Outputs
Y
A
Hi-Z
X
I
0A
I
1A
I
2A
I
3A
Y
B
X
Hi-Z
I
0B
I
1B
I
2B
I
3B
Function
Disconnected
Disconnected
S
1 - 0
= 0
S
1 - 0
= 1
S
1 - 0
= 2
S
1 - 0
= 3
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High-Impedence
2
IDTQS3253
HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= –40°C to +85°C, V
CC
= 5.0V ±5%
Symbol
V
IH
V
IL
I
IN
I
OZ
R
ON
V
P
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
≤
V
IN
≤
V
CC
0V
≤
V
OUT
≤
V
CC
V
CC
= Min., V
IN
= 0V, I
ON
= 30mA
V
CC
= Min., V
IN
= 2.4V, I
ON
=15mA
V
IN
= V
CC
= 5V, I
OUT
= -5μA
Min.
2
—
—
—
—
—
3.7
Typ.
(1)
—
—
—
—
5
10
4
Max.
—
0.8
±1
±1
7
15
4.2
Unit
V
V
μA
μA
Ω
V
NOTES:
1. Typical values are at V
CC
= 5.0V, T
A
= 25°C.
2. Pass Voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE vs V
IN
AT V
CC
= 5V
16
R
ON
(ohms)
14
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
V
IN
(Volts)
3
IDTQS3253
HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
I
CCQ
ΔI
CC
I
CCD
Parameter
Quiescent Power Supply Current
Power Supply Current per Control Input HIGH
(2)
Dynamic Power Supply Current per MHz
(3)
Test Conditions
(1)
V
CC
= Max., V
IN
= GND or Vcc, f = 0
V
CC
= Max., V
IN
= 3.4V, f = 0
V
CC
= 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 (V
IN
= 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.
Max.
3
1.5
0.25
Unit
μA
mA
mA/MHz
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
T
A
= -40°C to +85°C, V
CC
= 5.0V ± 5%;
C
LOAD
= 50pF, R
LOAD
= 500Ω unless otherwise noted.
Symbol
t
PLH
t
PHL
t
PZL
t
PZH
t
PZL
t
PZH
t
PLZ
t
PHZ
Data Propagation Delay
(2,3)
Ix to Y
Switch Turn-on Delay
Sx to Y
Switch Turn-on Delay
Ex
to Y
Switch Turn-off Delay
(2)
Ex
to Y, Sx to Y
0.5
—
6
ns
Parameter
Min.
(1)
—
0.5
0.5
Typ.
—
—
—
Max.
0.25
6.6
6
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 C
L
= 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
IDTQS3253
HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
QS
XXXXX
Device Type
XX
Package
X
Blank
8
Tube or Tray
Tape and Reel
QG
S1G
Quarter Size Outline Package - Green
Small Outline IC - Green
3253
High Speed CMOS Quickswitch Dual 4:1
Mux/Demux
Datasheet Document History
02/14/2011
Pg. 5
Updated the ordering information by removing the "IDT" notation, non RoHS part and by adding
Is it necessary to add a RAM to debug TI's 2407A?What is the function of this RAM? Can you tell me which TI document describes this problem?Where does the load in ccs load the program?I'm just learnin...
I used E coins to buy a computer monitor before. Jingdong said that this monitor was made of XXX material. I don’t remember the details. In the end, I bought the screen back. As a result, I saw that i...
[i=s]This post was last edited by paulhyde on 2014-9-15 04:15[/i] Question G of the 2009 National Undergraduate Electronic Design Competition is about designing a power amplifier. It mainly tests stud...
Tang Jun, former president of Microsoft China, once said: "One's career needs to be managed, which is no different from running a business." This statement is very appropriate for Chu Yiren, general m...
High efficiency and low standby power consumption are two major challenges in today's switching power supply design. Resonant topology or LLC topology is becoming increasingly popular because it ca...[Details]
1. Introduction
This design was made for participating in an electronic design competition. It effectively solved the problem of the operation and control of an electric car on a seesaw. The s...[Details]
With the advent of increasingly powerful processors, image sensors, memory, and other semiconductor devices, as well as the algorithms that enable them, computer vision can be implemented in a wide...[Details]
All electronic design engineers and scientists have performed electrical signal analysis, or signal analysis for short. Through this basic measurement, they can gain insight into signal details and...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
With the rapid development of urban economy, elevators are increasingly used as a vertical transportation tool. However, elevator fault detection and maintenance, especially the role of elevator remot...[Details]
0 Introduction
With the development of society, people pay more and more attention to security work. Monitoring products have been used in various fields instead of being used only in importan...[Details]
With the development and widespread application of computer technology, especially in the field of industrial control, computer communication is particularly important. Although serial communication g...[Details]
1. Introduction
At present, most lighting equipment still uses traditional energy for lighting. Making full use of solar energy as the energy supply for lighting equipment is of great si...[Details]
Overview:
This paper introduces a method of connecting a CAN-bus network with Ethernet to form a medium-sized remote monitoring/data transmission network.
CAN (Controller Area Network) is ...[Details]
1 Introduction
Building Automation System (BAS) is a distributed monitoring system (DCS) designed according to distributed information and control theory. It is the result of the mutual de...[Details]
1 Introduction
With the development of control, computer, communication, network technology, etc., a new control technology, namely fieldbus, has emerged in the field of industrial control...[Details]
LED is the abbreviation of light emitting diode, which is an electric light source made of semiconductor technology. The core part of LED is a chip composed of P-type semiconductor and N-type semi...[Details]
Many battery-powered systems require a visual indicator to show when the battery needs to be replaced. LEDs are commonly used for this purpose, but they consume at least 10mA of current. This con...[Details]
Nippon Electric Works and Volvo Technology Japan have developed a wireless power supply system for electric vehicles (EVs). Using this system, the two companies have successfully conducted an exper...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
