PI90LV3811A [PERICOM]
High-Speed Differential Line Drivers; 高速差分线路驱动器
| 型号： | PI90LV3811A |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | High-Speed Differential Line Drivers |
| 文件： | 总9页 (文件大小：326K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI90LV3811/PI90LVB3811
High-Speed Differential Line Drivers
Features
Description
• Ten line drivers meet or exceed the requirements of
ThePI90LV3811and PI90LVB3811consistof tendifferentialline
drivers that implement the electrical characteristics of low-voltage
differentialsignaling(LVDS). Thissignalingtechniquelowers out-
put voltage levels to reduce the power, increase switching speeds,
andallowoperationwitha3Vsupplyrail. Any current-modeLVDS
driverwilldeliveraminimumdifferential outputvoltagemagnitude
of 247mV into a 100-Ohm load (PI90LV3811) or 50-Ohm load
(PI90LVB3811)whenenabled.ThePI90LVB3811doublestheoutput
drive current to achieve LVDS levels with a 50-Ohm load.
the ANSI EIA/TIA-644 Standard
• Designed for signaling rates up to 660 Mbps with very
lowradiation(EMI)
• Low voltage differential signaling with typical output
voltageof350mVintoa:
100-ohmload(PI90LV3811)
50-ohmload(PI90LVB3811)
• Propagation delay times less than 2.9ns
• Output skew is less than 150ps
The intended application of this device and signaling technique
is for point-to-point baseband (single termination) and multipoint
(doubletermination)datatransmission overacontrolledimpedance
mediaofapproximately100-Ohms. Thetransmissionmediamaybe
printed-circuitboardtraces,backplanes,orcables.Thelargenumber
ofdriversintegratedintothesamesubstrate,alongwiththelowpulse
skew of balanced signaling, allows extremely precise timing align-
mentofclockanddataforsynchronousparalleldatatransfers.When
used with its companion 10-channel receivers, the PI90LV3810 or
PI90LVR3810, over 300 million data transfers per second in single-
edge clocked systems are possible with very little power.
• Part-to-part skew is less than 1.5ns
• 35mW total power dissipation in each driver operating
at200MHz
• Driver is high impedance when disabled or with V <1.5V
CC
• Bus-pinESDprotectionexceeds10kV
• LowvoltageTTL(LVTTL)logicinputsare5Vtolerant
• Package: 48-PinTSSOP(A)
PI90LV3811 & PI90LVB3811
(Note: The ultimate rate and distance of data transfer is dependent
upon attenuation characteristics of the media, the noise coupling to
the environment, and other system characteristics.)
The drivers are enabled in groups of five. When disabled, the driver
outputsareahighimpedance.Eachdriverinput(D )andenable(EN)
IN
haveaninternalpulldownthatwilldrivetheinputtoalowlevelwhen
open circuited.
ThePI90LV3811andPI90LVB3811arecharacterizedforoperation
from–40°Cto85°C.
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PI90LV3811/PI90LVB3811
High-Speed Differential Line Drivers
PinConfiguration
BlockDiagram
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PI90LV3811/PI90LVB3811
High-Speed Differential Line Drivers
AbsoluteMaximumRatingsOverOperating
†
Free-Air Temperature (unless otherwise noted)
RecommendedOperatingConditions
(1)
Min. Nom. Max. Units
Supply Voltage Range, V
........................................ –0.5Vto4V
CC
Voltage Range: Inputs ............................................ –0.5Vto6V
Supply Voltage, V
3.0
2.0
3.3
3.6
CC
D
or D
................................................................. –0.5Vto4V
OUT+
OUT–
High-Level Input Voltage, V
Low-Level Input Voltage, V
Operating free-air
V
(2):
IH
Electrostatic Discharge
(D ,D
and GND) ................Class3,A:10kV,B:700V
0.8
85
OUT+ OUT–
IL
(All Pins) ........................................... Class3,A:8kV,B:600V
–40
°C
Continuous Power Dissipation .... (see dissipation rating table)
temperature, T
A
Storage Temperature Range ............................. –65°Cto150°C
LeadTemperature1.6mm(1/16inch)
from case for 10 seconds .............................................. 260°C
DriverFunctionTable
Differential Input
Enables
EN
H
Outputs
† Stresses beyond those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated under “Recom-
mended Operating Conditions” is not implied. Exposure to Abso-
lute-Maximum-Rated conditions for extended periods may affect
devicereliability.
DIN
H
L
X
Open
DOUT+
DOUT–
H
L
Z
L
L
H
Z
H
L
H
H
Notes:
1. Allvoltagevalues,exceptdifferentialI/Obusvoltages,arewith
respect to ground terminal.
2. TestedinaccordancewithMIL-STD-883CMethod3015.7
H = high level,
L=lowlevel,
X=irrelevent,
Z = high impedance (off)
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PI90LV3811/PI90LVB3811
High-Speed Differential Line Drivers
ElectricalCharacteristicsOverRecommendedOperatingConditions(unlessotherwisenoted)
(1)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Units
R = 50-Ohm (PI90LVB3811)
V
Differential output voltage magnitude
247
340
454
L
L
OH
R = 100-Ohm (PI90LV3811)
mV
Change in differential output voltage magnitude
between logic states
C = 10pF
L
V
-50
1.125
-50
50
1.375
50
∆
OH
See Figures 1 and 2
V
OC(SS)
Steady-state common-mode output voltage
V
Change in steady-state common-mode output
voltage between logic states
V
OC(SS)
See Figure 3
∆
mV
V
Peak-to-peak common-mode output voltage
Supply current
50
50
150
70
OC(PP)
R = 100-Ohm (PI90LV3811)
L
Enabled, V = GND or V
IN
CC
R = 50-Ohm (PI90LVB3811)
I
CC
mA
L
77
120
Enabled, V = GND or V
IN
DD
Disabled, V = GND or V
0.5
3
1.5
20
IN
DD
I
High-level input current
Low-level input current
V
V
V
V
V
V
2V
IH
IN =
µA
mA
µA
I
0.8V
2
10
IL
IL =
or V
= 0V
± 24
±12
±1
ODOUT +
ODOUT -
I
OS
Short-circuit output current
= 0V
OD
OD
CC
I
OZ
High-impedance output current
Power-off output current
Input capacitance
= 0V or V
CC
I
= 1.5V, V = 2.45V
±1
O(OFF)
O
π
C
V = 0.4 sin (4E6 t) +0.5V
5
IN
I
pF
π
V = 0.4 sin (4E6 t) +0.5V,
I
C
Output capacitance
9.4
O
Disabled
Note: 1. All typical values are at 25°C and with a 3.3V supply.
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PI90LV3811/PI90LVB3811
High-Speed Differential Line Drivers
SwitchingCharacteristicsOverRecommendedOperatingConditions(unlessotherwisenoted)
Symbol
Parameter
Tes t Condition
Min.
Typ.(1)
Max.
Units
Propagation delay time, low-to-high-
level output
tPLH
0.9
1.7
2.9
Propagation delay time, high-to-low
level output
tPHL
0.9
1.6
2.9
ns
RL = 50-Ohm (PI90LVB3811)
RL = 100-Ohm (PI90LV3811)
CL = 10pF
tr
Differential output signal rise time
Differential output signal fall time
Pulse skew ( I tPHL - tPLH I )
Output skew(2)
0.4
0.4
0.8
0.8
150
80
1.3
1.3
tf
See Figure 4
tsk(p)
tsk(o)
tsk(pp)
500
150
1.5
ps
ns
Part-to-part skew(3)
Propagation delay time, high-
impedance to high-level output
tPZH
tPZL
tPHZ
tPLZ
6.4
5.9
3.5
3.5
15
15
15
15
Propagation delay time, high-
impedance to low-level output
See Figure 5
Propagation delay time, high-level to
high-impedance output
Propagation delay time, high-level to
low-impedance output
Notes:
1. All typical values are at 25°C and with a 3.3V supply
2. tsk(o) is the magnitude of the time difference between the tPLH or tPHL of all drivers of a single device with all of their inputs
connected together.
3. tsk(pp) is the magnitude of the difference in propagation delay times between any specified terminals of two devices when both
devices operate with the same supply voltages, at the same temperature, and have identical packages and test circuits
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PI90LV3811/PI90LVB3811
High-Speed Differential Line Drivers
ParameterMeasurementInformation
Figure1. VoltageandCurrentDefinitions
Figure 2. V Test Circuit
OD
Note:
1. All input pulses are supplied by a generator having the following characteristics: tr or tf ≤ 1ns, Pulse Repetition Rate
(PRR) = 50 Mpps, Pulse width = 10 ±0.2ns. CL includes instrumentation and fixture capacitance within 0.06m of the D.U.T.
The measurement of VOC(PP) is made on test equipment with a –3dB bandwidth of at least 300MHz.
Figure3.TestCircuit&DefinitionsfortheDriverCommon-ModeOutputVoltage
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PI90LV3811/PI90LVB3811
High-Speed Differential Line Drivers
ParameterMeasurementInformation(continued)
Note:
1. All input pulses are supplied by a generator having the following characteristics: t or t ≤ 1ns, Pulse Repetition Rate
r
f
(PRR) = 15 Mpps, Pulse width = 10 ±0.2ns. C includes instrumentation and fixture capacitance within 0.06m of the D.U.T.
L
Figure4.TestCircuit,Timing,&VoltageDefinitionsfortheDifferentialOutputSignal
Note:
1. All input pulses are supplied by a generator having the following characteristics: t or t ≤ 1ns, Pulse Repetition Rate
r
f
(PRR) = 0.5 Mpps, Pulse width = 500 ±10ns. C includes instrumentation and fixture capacitance within 0.06m of the D.U.T.
L
Figure5.Enable&DisableTimeCircuit&Definitions
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PI90LV3811/PI90LVB3811
High-Speed Differential Line Drivers
TypicalCharacteristics
Supply Current (RMS) vs.
Switching Frequency
Low-to-High Propagation Delay Time
vs. Free-Air Temperature
110
100
90
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
V
=3.6V
CC
V
= 3.6V
CC
80
V
=3.3V
CC
70
V
= 3.3V
CC
V
CC
=3V
60
V
= 3V
CC
50
All inputs loaded & enabled
40
0
50
100
150
200
250 300
–40 –20
0
20
40
60
80
100
T
–Free-Air Temperature - C
A
f – Frequency – MHz
˚
Figure 6.
Figure 7.
High-to-Low Propagation Delay Time
vs. Free-Air Temperature
2.2
2.0
1.8
1.6
1.4
1.2
1.0
V
=3V
CC
V
=3.3V
CC
V
=3.6V
CC
–40
–20
0
20
40
60
80
100
T
–Free-Air Temperature - C
A
˚
Figure 8.
PS8663
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PI90LV3811/PI90LVB3811
High-Speed Differential Line Drivers
PackagingMechanical:48-PinTSSOP(A)
48
.236
.244
6.0
6.2
1
.488 12.4
.496 12.6
.047
1.20 Max
SEATING PLANE
0.09
0.20
.004
.008
0.45 .018
0.75 .030
.002
.006
0.05
0.15
.007
.010
.0197
BSC
.319
BSC
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
0.50
0.17
0.27
8.1
OrderingInformation
Ordering Code
Package Code
Package Type
48-pin TSSOP
48-pin TSSOP
Operating Range
PI90LV3811A
A48
A48
–40°C to 85°C
PI90LVB3811A
PericomSemiconductorCorporation
2380BeringDrive • SanJose,CA95131•1-800-435-2336 • Fax(408)435-1100• http://www.pericom.com
PS8663
02/21/03
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