IDTQS32253Q8 [IDT]
Bus Exchanger, 2-Func, 1-Bit, True Output, CMOS, PDSO16, QSOP-16;
| 型号： | IDTQS32253Q8 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Bus Exchanger, 2-Func, 1-Bit, True Output, CMOS, PDSO16, QSOP-16 光电二极管 逻辑集成电路 |
| 文件： | 总5页 (文件大小：76K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
IDTQS32253
HIGH-SPEED CMOS
QUICKSWITCH
DUAL 4:1 MUX/DEMUX
DESCRIPTION:
FEATURES:
−
−
−
−
−
−
−
−
Enhanced N channel FET with no inherent diode to Vcc
5Ω 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
The QS32253 is a high-speed CMOS TTL-compatible dual 4:1 multi-
plexer/demultiplexer with 3-state outputs. The QS32253 is function and
pinoutcompatible versionofthe 74F253,74FCT253,andthe 74ALS/AS/
LS253dual4:1multiplexers. The QS32253has 25Ω resistors toreduce
ground bounce noise.
Mux/Demux devices provide an order of magnitude faster speed than
equivalentlogicdevices.
25Ω resistors for low noise
Available in QSOP and SOIC Packages
The QS32253 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
FUNCTIONALBLOCKDIAGRAM
S0
S1
EA
EB
I0A
I1A
I2A
YA
YB
I3A
I0B
I1B
I2B
I3B
INDUSTRIAL TEMPERATURE RANGE
APRIL 2000
1
c
1999 Integrated Device Technology, Inc.
DSC-5749/-
IDTQS32253
HIGH-SPEEDCMOSQUICKSWITCHDUAL4:1MUX/DEMUX
INDUSTRIALTEMPERATURERANGE
ABSOLUTE MAXIMUM RATINGS (1)
PINCONFIGURATION
Symbol
Description
Supply Voltage to Ground
DC Switch Voltage VS
Max.
– 0.5 to +7
– 0.5 to +7
– 0.5 to +7
-3
Unit
V
(2)
VTERM
(3)
V
VTERM
(3)
VCC
DC Input Voltage VIN
V
1
2
3
16
15
14
VTERM
EA
S1
VAC
AC Input Voltage (pulse width ≤20ns)
V
EB
S0
I3B
IOUT
PMAX
TSTG
DC Output Current
120
mA
W
Maximum Power Dissipation (TA = 85°C)
Storage Temperature
0.5
3A
2A
I
I
– 65 to +150 °C
4
5
6
13
12
11
SO16-1
SO16-7
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.
I2B
I1B
I0B
I1A
I0A
YA
7
8
10
9
3. All terminals except Vcc.
B
Y
GND
CAPACITANCE
(TA = +25OC, f = 1.0MHz, VIN = 0V, VOUT = 0V)
Pins
Typ.
Max. (1)
Unit
Control Pins
4
5
pF
SOIC/ QSOP
TOP VIEW
Quickswitch Channels
(Switch OFF)
Demux
Mux
5
7
pF
pF
14
16
NOTE:
1. This parameter is guaranteed but not production tested.
PIN DESCRIPTION
Pin Names
I/O
Description
Data Inputs
Ixx
I
S0, S1
EA, EB
YA, YB
I
I
Select Inputs
Enable Inputs
Data Outputs
O
FUNCTION TABLE(1)
Enable
Select
Outputs
YB
EA
EB
X
H
L
S1
X
X
L
S0
X
X
L
YA
Function
H
Hi-Z
X
X
Hi-Z
I0B
Disconnected
Disconnected
S1 - 0 = 0
X
L
I0A
I1A
I2A
I3A
L
L
L
L
H
L
I1B
S1 - 0 = 1
L
H
H
I2B
S1 - 0 = 2
L
L
H
I3B
S1 - 0 = 3
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High-Impedence
2
IDTQS32253
HIGH-SPEEDCMOSQUICKSWITCHDUAL4:1MUX/DEMUX
INDUSTRIALTEMPERATURERANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = -40°C to +85°C, VCC = 5.0V ± 5%
Symbol
Parameter
Input HIGH Voltage
Test Conditions
Min. Typ.(1) Max.
Unit
VIH
Guaranteed Logic HIGH for Control Pins
2
—
—
—
—
28
35
4
—
0.8
±1
±1
40
V
VIL
IIN
Input LOW Voltage
Guaranteed Logic LOW for Control Pins
0V ≤ VIN ≤ Vcc
—
—
—
20
20
3.7
V
µA
µA
Ω
Input Leakage Current (Control Inputs) (2)
Off-State Current (Hi-Z)
Switch ON Resistance
Switch ON Resistance
Pass Voltage (2)
IOZ
RON
RON
VP
0V ≤ VOUT ≤ Vcc
Vcc = Min., VIN = 0V, ION = 30mA
Vcc = Min., VIN = 2.4V, ION = 15mA
VIN = Vcc = 5V, IOUT = -5µA
48
Ω
4.2
V
NOTES:
1. Typical values are at VCC = 5.0V, TA = 25°C.
2. Pass voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
80
RON
(ohms)
70
60
50
40
30
20
10
0
1.5
2.0
2.5
3.0
3.5
1.0
0.0
0.5
VIN
(Volts)
3
IDTQS32253
HIGH-SPEEDCMOSQUICKSWITCHDUAL4:1MUX/DEMUX
INDUSTRIALTEMPERATURERANGE
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
∆ICC
Power Supply Current per Control Input HIGH (2)
Dynamic Power Supply Current per MHz(3)
V
CC = Max., V = 3.4V, f = 0
1.5
mA
IN
ICCD
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 ∆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.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C, VCC = 5.0V ± 5%
Ω
CLOAD = 50pF, RLOAD = 500 unless otherwise noted.
Min. (1)
Typ.
Max.
Symbol
tPLH
Parameter
Unit
Data Propagation Delay (2,3)
In to Y
—
—
1.25 (3)
ns
tPHL
tPZL
Switch Turn-on Delay
Sn to Y
0.5
0.5
0.5
—
—
—
7
7
6
ns
ns
ns
tPZH
tPZL
Switch Turn-on Delay
EN to Y
Switch Turn-off Delay (2)
EN to Y, Sn to Y
tPZH
tPLZ
tPHZ
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 1.25ns 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
IDTQS32253
HIGH-SPEEDCMOSQUICKSWITCHDUAL4:1MUX/DEMUX
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
XX
IDTQS
XXXXX
X
Package
Process
Device Type
Industrial (-40°C to +85°C)
Blank
Q
SO
Quarter Size Outline Package (SO16-7)
Small Outline IC (SO16-1)
32253
High Speed CMOS Quickswitch Dual 4:1 Mux/Demux
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The IDT logo, QuickSwitch, and SynchroSwitch are registered trademarks of Integrated Device Technology, Inc.
5
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