IDT74CBTLV3253 [IDT]
LOW-VOLTAGE DUAL 1-OF-4 MULTIPLEXER/ DEMULTIPLEXER; 低电压1 -OF- 4双用/解复用器
| 型号： | IDT74CBTLV3253 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | LOW-VOLTAGE DUAL 1-OF-4 MULTIPLEXER/ DEMULTIPLEXER |
| 文件： | 总5页 (文件大小：151K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IDT74CBTLV3253
LOW-VOLTAGE DUAL
1-OF-4 MULTIPLEXER/
DEMULTIPLEXER
DESCRIPTION:
FEATURES:
TheCBTLV3253is adual1-of-4high-speedmultiplexer/demultiplexer.
Thelowon-stateresistanceoftheswitchallowsconnectionstobemadewith
minimalpropagationdelay.
−
−
−
−
−
−
−
Functionally equivalent to QS3253
5Ω Switch Connection between Two Ports
Isolation Under Power-Off Conditions
Over-voltage tolerant
Latch-up performance exceeds 100ma
VCC = 2.3V - 3.6V, normal range
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
Available in SSOP, QSOP, and TSSOP packages
The select (S0, S1) input controls the data flow. The multiplexer/
demultiplexerswitches aredisabledwhentheoutput-enable(OE)inputis
high.
To ensure that the device is in high-impedance state during power up
or power down, OE should be tied to VCC through a pullup resistor; the
minimumvalueoftheresistorisdeterminedbythecurrent-sinkingcapability
of the driver.
−
FUNCTIONALBLOCKDIAGRAM
6
7
SW
1A
1B1
5
SW
1B2
4
SW
1B3
3
SW
1B4
9
10
2A
SW
2B1
2B2
2B3
2B4
11
12
13
SW
SW
SW
14
2
S0
S1
1
1OE
2OE
15
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 2001
1
c
2001 Integrated Device Technology, Inc.
DSC-5397/2
IDT74CBTLV3253
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGEDUAL1-OF-4MULTIPLEXER/DEMULTIPLEXER
ABSOLUTE MAXIMUM RATINGS (1)
PINCONFIGURATION
Symbol
Description
Supply Voltage Range
Max.
Unit
VCC
–0.5 to 4.6
V
1OE
S1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC
2OE
S0
–0.5 to 4.6
128
V
VI
Input Voltage Range
Continuous Channel Current
Input Clamp Current, VI/O < 0
Storage Temperature
mA
mA
°C
IIK
1B4
1B3
1B2
1B1
1A
–50
TSTG
–65 to +150
SO16-7
SO16-9
SO16-10
2B4
2B3
2B2
2B1
2A
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.
GND
SSOP/ QSOP/ TSSOP
TOP VIEW
FUNCTION TABLE (1)
ONE OF TWO 1:4 MUX/DEMUX BANKS
Inputs
SIMPLIFIEDSCHEMATIC,EACH
SWITCH
OE
S1
S0
Function
L
L
L
A Port = B1 Port
L
L
L
H
L
H
H
X
H
L
A Port = B2 Port
A Port = B3 Port
A Port = B4 Port
Disconnect
H
X
NOTE:
A
B
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
CONTROL
CIRCUITRY
OPERATING CHARACTERISTICS (1)
Unit
V
Symbol
Parameter
Test Conditions
Min.
Max.
VCC
Supply Voltage
2.3
1.7
2
3.6
VIH
VIL
High-Level Control Input Voltage
Low-Level Control Input Voltage
Operating Free-Air Temperature
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
—
—
V
—
—
−40
0.7
0.8
+85
V
TA
°C
NOTE:
1. All unused control inputs of the device must be held at VCC or GND to ensure proper operation.
2
IDT74CBTLV3253
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGEDUAL1-OF-4MULTIPLEXER/DEMULTIPLEXER
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = – 40°C to +85°C
Symbol
Parameter
Test Conditions
VCC = 3V, II = −18mA
Min.
Typ. (1)
Max.
Unit
VIK
Control Inputs, Data I/O
—
—
– 1.2
V
II
Control Inputs, Data I/O
Data I/O
VCC = 3.6V, VI = VCC or GND
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4
±1
5
µA
µA
µA
µA
µA
pF
IOZ
IOFF
ICC
VCC = 3.6V, VO = 0 or 3.6V, switch disabled
VCC = 0, VI or VO = 0 to 3.6V
50
10
300
—
—
—
8
VCC = 3.6V, IO = 0, VI = VCC or GND
VCC = 3.6V, One input at 3V, Other inputs at VCC or GND
VI = 3V or 0
(2)
∆ICC
Control Inputs
Control Inputs
A port
CI
CIO(OFF)
VO = 3V or 0, OE = VCC = 3.3V
20
6
pF
B port
Max at VCC = 2.3V
Typ at VCC = 2.5V
VI = 0
IO = 64mA
IO = 24ma
IO = 15mA
IO = 64mA
IO = 24mA
IO = 15mA
5
5
8
(3)
VI = 1.7V
VI = 0
27
5
40
7
Ω
ON
R
VCC = 3V
5
7
VI = 2.4V
10
15
NOTES:
1. Typical values are at VCC = 3.3V, +25°C ambient.
2. The increase in supply current is attributable to each input that is at the specified voltage level rather than VCC or GND.
3. This is measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined
by the lower of the voltages of the two (A or B) terminals.
SWITCHING CHARACTERISTICS
VCC = 2.5V ± 0.2V
VCC = 3.3V ± 0.3V
Symbol
Parameter
Min.
Max.
Min.
Max.
Unit
(1)
tPD
Propagation Delay
A to B or B to A
Select Time
S to A or B
−
1
1
1
1
1
0.15
−
1
1
1
1
1
0.25
ns
tSEL
tEN
4.8
4.8
5.1
5
4.5
4.5
5.3
4.8
5.4
ns
ns
ns
ns
ns
Enable Time
S to B
tDIS
Disable Time
S to B
tEN
Enable Time
OE to A or B
Disable Time
OE to A or B
tDIS
5.5
NOTE:
1. The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance when
driven by an ideal voltage source (zero output impedance).
3
IDT74CBTLV3253
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGEDUAL1-OF-4MULTIPLEXER/DEMULTIPLEXER
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
PROPAGATIONDELAY/SELECTTIME
(1)
(2)
VIH
Symbol
VCC = 3.3V ± 0.3V
VCC = 2.5V ± 0.2V
Unit
SAME PHASE
VT
V
LOAD
6
2 xVcc
Vcc
V
INPUT TRANSITION
0V
PHL
t
VIH
VT
3
V
V
tPLH
VOH
VT
VOL
OUTPUT
1.5
300
300
50
VCC/2
150
VLZ
VHZ
CL
mV
mV
pF
tPHL
tPLH
150
VIH
OPPOSITE PHASE
INPUT TRANSITION
T
V
30
0V
TEST CIRCUITS FOR ALL OUTPUTS
ENABLEANDDISABLETIMES
VLOAD
VCC
DISABLE
ENABLE
tPZL
VIH
VT
Open
GND
CONTROL
INPUT
500Ω
500Ω
0V
tPLZ
VIN
VOUT
Pulse(1, 2)
Generator
VLOAD/2
VT
D.U.T.
VLOAD/2
VOL + VLZ
VOL
OUTPUT
NORMALLY
LOW
SWITCH
CLOSED
tPHZ
RT
tPZH
CL
VOH
VOH -VHZ
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
VT
0V
0V
NOTES:
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control
Disable-HIGH.
1. Pulse generator for all pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
2. Pulse generator for all pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.
DEFINITIONS:
1. CL = Load capacitance: includes jig and probe capacitance.
2. RT = Termination Resistance: Should be equal to ZOUT of the pulse
generator.
SWITCH POSITION
Test
Switch
tPLZ tPZL
/
VLOAD
tPHZ/tPZH
tPD
GND
Open
Open
tSEL
4
IDT74CBTLV3253
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGEDUAL1-OF-4MULTIPLEXER/DEMULTIPLEXER
ORDERINGINFORMATION
CBTLV
XXX
XX
IDT
XX
Temp. Range
Device Type Package
Q
Quarter-Size Small Outline Package (SO16-7)
PY
PG
Shrink Small Outline Package (SO16-9)
Thin Shrink Small Outline Package (SO16-10)
3253
74
Low-Voltage Dual 1-of-4 Multiplexer/Demultiplexer
–40°C to +85°C
CORPORATE HEADQUARTERS
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Santa Clara, CA 95054
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for Tech Support:
logichelp@idt.com
(408) 654-6459
800-345-7015 or 408-727-6116
fax: 408-492-8674
www.idt.com
5
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