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Электронный компонент: PI90LVB3487L

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1
PS8666A 07/17/03
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LVDS High-Speed
Differential Line Drivers
Features
Signaling Rates >400 Mbps (200 MHz)
Single 3.3V Power Supply Design
Low Voltage Differential Signaling with Typical Output
Voltage of 350mV into the following:
100-Ohm load (PI90LVxxxx)
50-Ohm load (PI90LVBxxxx)
Maximum Differential Skew of 0.4ns
Typical Propagation Delay of 1.2ns
Maximum Power Dissipation: 25mW @ 200 MHz/driver
Driver at High Impedance when Disabled or V
CC
<1.5V
Low Voltage TTL (LVTTL) Inputs
Bus-Terminal ESD Protection Exceeds 10kV
Industrial Temperature Operating Range: -40C to 85C
Packages Available: SOIC, TSSOP
Meets or Exceeds ANSI/TIA/EIA-644 LVDS Standard
Description
The PI90LV/LVB3487 and PI90LV/LVB9638 are differential line
drivers that use low-voltage differential signaling (LVDS) to sup-
port data rates in excess of 400 Mbps. These products are designed
for applications requiring high-speed, low-power consumption
and low noise generation.
A low voltage TTL/CMOS input level is translated by the device
into a low-voltage (350mV) differential output signal.
Applications
Applications include point-to-point and multidrop baseband data
transmission over controlled impedance media of approximately
100-Ohms. The transmission media can be printed circuit board
traces, backplanes, or cables.
The PI90LV/LVB3487 and PI90LV/LVB9638 and companion line
receivers (PI90LV/LVT3486 and PI90LV/LVT9637) provide new
alternatives to RS-232, PECL, and ECL devices for high-speed,
point-to-point interface applications.
PI90LV3487/PI90LVB3487
PI90LV9638/PI90LVB9638
PI90LV3487 & PI90LVB3487
PI90LV9638 & PI90LVB9638
16-Pin
L,W
8-Pin
U,W
2
PS8666A 07/17/03
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PI90LV3487 / PI90LVB3487
PI90LV9638 / PI90LVB9638
LVDS High-Speed Differential Line Drivers
Function Tables
Pin Descriptions
e
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H
L
X
Z
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X
*
X
Z
Z
PI90LV/LVB3487
PI90LV/LVB9638
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Recommended Operating Conditions
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0
4
5
2
+
5
8
+
C
Supply Voltage (V
CC
) ........................................... 0.3V to +4.0V
Input Voltage (D
IN
) .................................... 0.3V to (V
CC
+0.3V)
Enable Input Voltage (1,2EN, 3,4EN) .......... 0.3V to (V
CC
+0.3V)
Output Voltage (D
OUT+
, D
OUT-
) ......................... 0.3V to +3.9V
Short Circuit Duration
(D
OUT+
, D
OUT-
) .................................................. Continuous
S Package ........................................................................ 750mW
Derate S Package .................................... 8.5mW/C above +25C
Storage Temperature Range ............................... -65C to +150C
Lead Temperature Range Soldering (4s) .......................... +260C
Maximum Junction Temperature ...................................... +150C
ESD Rating .......................................................................
10kV
Note:
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.
Absolute Maximum Ratings
(see Note 1, Page 4)
X* V
CC
<1.5V
X* V
CC
<1.5V
Note:
H = High Level
L = Low Level
X = Irrelevant
Z = High Impedance Off)
3
PS8666A 07/17/03
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PI90LV3487 / PI90LVB3487
PI90LV9638 / PI90LVB9638
LVDS High-Speed Differential Line Drivers
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8
Electrical Characteristics
Over supply voltage and operating temperature ranges, unless otherwise specified.
(2,3,4)
4
PS8666A 07/17/03
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12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
PI90LV3487 / PI90LVB3487
PI90LV9638 / PI90LVB9638
LVDS High-Speed Differential Line Drivers
Switching Characteristics
V
CC
= +3.3V 10%, T
A
= 40C to +85C (Notes 3, 9 ,11)
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Notes:
1.
"Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply
that the devices should be operated at these limits. The table of "Electrical Characteristics" specifies conditions of device operation.
2.
Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except:
V
OD1
and
V
OD1
.
3.
All typicals are given for: V
CC
= +3.3V, T
A
= +25C.
4.
The PI90LV/LVB3487 and PI90LV/LVB9638 are current mode devices and only functions within datasheet specifications when a resistive
load is applied to the driver outputs typical range is 90 ohms to 110 ohms for PI90LVxxxx and 47 ohms to 55 ohms for PI90LVBxxxx.
5.
t
SKD1
, It
PHLD
- t
PLHD
I is the magnitude difference in differential propagation delay time between the positive going edge and the negative
going edge of the same channel.
6.
t
SKD2
is the Differential Channel-to-Channel Skew of any event on the same device.
7.
t
SKD3
, Differential Part-to-Part Skew, is defined as the difference between the minimum and maximum specified differential propagation
delays. This specification applies to devices at the same V
CC
and with 5C of each other within the operating temperature range.
8.
t
SKD4
, Part-to-Part Skew, is the differential Channel-to-Channel skew of any event between devices. This specification applies to devices
over recommended operating temperature and voltage ranges, and across process distribution. t
SKD4
is defined as
I Max - Min I differential propagation delay.
9.
Generator waveform for all tests unless otherwise specified: f = 1 MHz, Z
O
= 50 ohms, tr
1ns, and t
f
1ns.
10. Output short circuit current (I
OS
) is specified as magnitude only, minus sign indicates direction only.
11. C
L
includes probe and jig capacitance.
12. All input voltages are for one channel unless otherwise specified. Other inputs are set to GND.
13. f
MAX
generator input conditions: t
R
= t
F
< 1ns, (0% to 100%), 50% duty cycle, 0V to 3V.
Output Criteria: duty cycle = 45%/55%, V
OD
> 250mV, all channels switching.
5
PS8666A 07/17/03
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PI90LV3487 / PI90LVB3487
PI90LV9638 / PI90LVB9638
LVDS High-Speed Differential Line Drivers
Parameter Measurement Information
Figure 1. Driver V
OD
and V
OS
Test Circuit
Figure 2. Driver Propagation Delay and Transition Time Test Circuit
VOS
RL/2
RL/2
S1
VCC
DIN
GND
D
DOUT-
Driver ENABLED
DOUT+
VOD
DIN
50-Ohm
D
CL
CL
Driver ENABLED
Generator
DOUT+
DOUT-
RL
6
PS8666A 07/17/03
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PI90LV3487 / PI90LVB3487
PI90LV9638 / PI90LVB9638
LVDS High-Speed Differential Line Drivers
Figure 4. Driver Three-State Delay Test Circuit
Figure 3. Driver Propagation Delay and Transition Time Waveforms
tTLH
20%
VDIFF = DOUT+ -DOUT-
VDIFF
DOUT+
DOUT-
DIN
VOH
VOL
0V
0V (Differential)
3V
0V
0V
0V
80%
1.5V
1.5V
80%
20%
tTHL
tPHLD
tPLHD
DIN
EN
VCC
D
CL
Generator
GND
DOUT+
RL/2
50-Ohm
RL/2
+1.2V
CL
DLOUT-
7
PS8666A 07/17/03
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PI90LV3487 / PI90LVB3487
PI90LV9638 / PI90LVB9638
LVDS High-Speed Differential Line Drivers
Figure 5. Driver 3-State Delay Waveform
Figure 6. Point-to-Point Application
DOUT+ When DIN= GND
DOUT- When DIN= VCC
DOUT+ When DIN= VCC
DOUT- When DIN= GND
EN* When EN = GND
EN When EN* = VCC
or
3V
0V
1.2V
50%
50%
50%
50%
1.5V
1.5V
1.5V
1.5V
tPZH
VOH
VOL
tPHZ
tPZL
tPLZ
0V
3V
1.2V
8
PS8666A 07/17/03
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PI90LV3487 / PI90LVB3487
PI90LV9638 / PI90LVB9638
LVDS High-Speed Differential Line Drivers
Packaging Mechanical: 16-Pin SOIC 150 Mil (W)
Packaging Mechanical: 8-Pin SOIC 150 Mil (W)
SEATING PLANE
.050
BSC
1
16
0-8
.149
.157
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
3.78
3.99
.386
.393
9.80
10.00
1.27
.053
.068
1.35
1.75
.2284
.2440
5.80
6.20
.0040
.0098
0.10
0.25
.013
.020
.0155
.0260
0.330
0.508
0.393
0.660
.0075
.0098
0.25
0.50
.0099
.0196
x 45
0.19
0.25
.016
.050
0.41
1.27
REF
.0040
.0098
SEATING PLANE
.013
.020
.050
BSC
.016
.0075
.0098
1
8
.0099
.0196
0-8
.050
.149
.157
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
3.78
3.99
.189
.196
4.80
5.00
1.27
.016
.026
1.35
1.75
.2284
.2440
5.80
6.20
0.406
0.660
0.330
0.508
0.10
0.25
0.40
1.27
0.19
0.25
0.25
0.50
x 45
.053
.068
REF
9
PS8666A 07/17/03
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PI90LV3487 / PI90LVB3487
PI90LV9638 / PI90LVB9638
LVDS High-Speed Differential Line Drivers
Packaging Mechanical: 8-Pin Mini Small Outline MSOP (U)
15
MAX
15
MAX
Detail A
Detail A
.112
.120
2.85
3.05
.114
.122
2.90
3.10
.114
.122
2.90
3.10
.010
0
- 6
15 Max.
15 Max.
0.25
Gauge
Plane
.003
.012
.016
.028
.037
0.40
0.70
0.95
REF
0.07
0.30
.003
.012
0.07
0.30
.193
.201
.047
max.
.002
.006
SEATING
PLANE
.0256
BSC
.018
.030
.004
.008
.252
BSC
1
16
.169
.177
X.XX
X.XX
DENOTES CONTROLLING
DIMENSIONS IN MILLIMETERS
0.05
0.15
6.4
0.45
0.75
0.09
0.20
4.3
4.5
1.20
4.9
5.1
0.65
0.19
0.30
.007
.012
Packaging Mechanical: 16-Pin TSSOP 4.4mm wide (L)
10
PS8666A 07/17/03
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PI90LV3487 / PI90LVB3487
PI90LV9638 / PI90LVB9638
LVDS High-Speed Differential Line Drivers
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Ordering Information
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
Notes:
1. Thermal characteristics can be found on the company web site at http://www.pericom.com/packaging/mechanicals.php