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PI90LV387/ PI90LVB387
High-Speed Differential Line Drivers
Features
* Sixteen line drivers meet or exceed the requirements of the ANSI EIA/TIA-644 Standard * Designed for signaling rates up to 500 Mbps with very low radiation (EMI) * Low voltage differential signaling with typical output voltage of 350mV into : - 100 load (PI90LV387) - 50 load (PI90LVB387) * Propagation delay times less than 2.6ns * Output skew is less than 150ps * Part-to-part skew is less than 1.5ns * 35mW total power dissipation in each driver operating at 200 MHz * Bus-pin ESD protection exceeds 10kV * Low voltage TTL (LVTTL) logic inputs are 5V tolerant * Packaging (Pb-free & Green available): -64-Pin TSSOP (A)
Description
PI90LV387/ PI90LVB387 consists of sixteen differential line drivers that implement the electrical characteristics of low-voltage differential signaling (LVDS). This signaling technique lowers output voltage levels to reduce power, increase switching speeds, and allow operation with a 3V supply rail. The intended application of this device and signaling technique is for point-to-point baseband (single termination) and multipoint (double termination) data transmission over a controlled impedance media of approximately 100 and 50 (LVB387). The transmission media may be printed-circuit board traces, backplanes, or cables. The large number of drivers integrated into the same substrate, with the low pulse skew of balanced signaling, allows extremely precise timing alignment of clock and data for synchronous parallel data transfers. When used with its companion 16-channel receivers, the PI90LV386 or PI90LVT386, over 400 million data transfers per second in single-edge clocked systems are possible with very little power. (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, driver outputs are at a high impedance. Each driver input (DIN) and enable (EN) have an internal pulldown that drives the input to a low level when open circuited. The parts are characterized for operation from -40C to 85C.
Pin Diagram
GND VCC VCC GND EN1 1DIN1 1DIN2 1DIN3 1DIN4 EN2 2DIN1 2DIN2 2DIN3 2DIN4 GND VCC VCC GND 3DIN1 3DIN2 3DIN3 3DIN4 EN3 4DIN1 4DIN2 4DIN3
4DIN4 EN3 GND VCC VCC GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
64 63 62 61 60 59 58 57 56 55 54 53 51 50 49 48 47 46 45 44 43 42 41 40 39 37 37 36 35 34
33
1DO1+ 1DO1 - 1DO2+ 1DO2 - 1DO3+ 1DO3 - 1DO4+ 1DO4 - 2DO1+ 2DO1 - 2DO2+ 2DO2- 2DO3+ 2DO3 - 2DO4+ 2DO4 - 3DO1+ 3DO1 - 3DO2+ 3DO2 - 3DO3+ 3DO3 - 3DO4+ 3DO4 -
4DO1+ 4DO1 - 4DO2+ 4DO2 - 4DO3+ 4DO3 - 4DO4+ 4DO4 -
64-Pin 52 A
Block Diagram
DIN1 DO1+ DO1-
DIN2 EN
DIN3
DO2+ DO2-
DO3+ DO3-
DIN4
DO4+ DO4-
1 of 4
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PS8573C
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PI90LV387/PI90LVB387 High-Speed Differential Line Drivers Absolute Maximum Ratings
(Over Operating Free-Air Temperature, unless otherwise noted)(1) Supply Voltage Range, VCC(2)........................................ -0.5V to 4V Voltage Range: Inputs ............................................ -0.5V to 6V DO+ or DO- ............................................................. -0.5V to 4V Electrostatic Discharge(3): (DO+,DO- and GND).......................Class 3, A: 10kV, B:700V (All Pins) ..........................................Class 3, A: 8kV, B:600V Continuous Power Dissipation ......(see dissipation rating table) Storage Temperature Range ............................. -65C to 150C Lead Temperature 1.6mm (1/16 inch) from case for 10 seconds...............................................260C
Notes: 1. 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 "Recommended Operating Conditions" is not implied. Exposure to Absolute-Maximum-Rated conditions for extended periods may affect device reliability. 2. All voltage values, except differential I/O bus voltages, are with respect to ground terminal. 3. Tested in accordance with MIL-STD-883C Method 3015.7
Recommended Operating Conditions
Min. Supply Voltage, VCC High-level Input Voltage, VIH Low-level Input Voltage, VIL Operating free-air temperature, TA -40 3.0 2.0 0.8 85 C Nom. Max. Units 3.3 3.6 V
Driver Function Table
Differential Input DIN H L X Open
Notes: 1. H = high level, L = low level, X = irrelevent, Z = high impedance (off)
Enables EN H H L H H L Z L
Outputs DOUT+ DOUTL H Z H
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PS8573C
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PI90LV387/PI90LVB387 High-Speed Differential Line Drivers Electrical Characteristics Over Recommended Operating Conditions (unless otherwise noted)
Symbol | VOH | | VOH | VOC(SS) VOC(SS) VOC(PP) ICC IIH IIL Parameter Differential output voltage magnitude Change in differential output voltage magnitude between logic states Steady-state common-mode output voltage Change in Steady-state common-mode output voltage between logic states Peak-to-peak common-mode output voltage Supply Current High-Level input current Low-level input current Test Conditions RL = 50 (LVB) RL = 100 (LV) See Figure 1 and 2 See Figure 3 LV LVB See Figure 3 50 RL = 50 (LVB) RL = 100 (LV) Enabled, VIN = GND or VCC VIH = 2V VIL = 0.8V VODOUT+ or VODOUT- = 0V IOS Short-circuit output current VOD = 0V IOZ IO(OFF) CIN CO High-impedance output current Power-off output current Input capacitance Output capacitance VO = 0V or VCC VCC = 0V, VO = 2.4V VI = 0.4 sin (4E6t) + 0.5V VI = 0.4 sin (4E6t) + 0.5V, Disabled 6 9.4 pF LV LVB LV LVB LV LVB 60 122 3 2 150 78 190 20 10 24 48 12 24 1 1 A mA mA A Min. 247 -50 1.125 1.000 -50 Typ. 340 Max. 454 50 1.375 1.375 50 mV mV V Units
Note: 1. All typical values are at 25C and with a 3.3V supply.
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PS8573C
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PI90LV387/PI90LVB387 High-Speed Differential Line Drivers Switching Characteristics (Over Recommended Operating Conditions, unless otherwise noted)
Symbol tPHL tPHL tr tf tsk(p) tsk(o) tsk(pp) tPZH tPZL tPHZ tPLZ fMAX Parameter Propagation delay time low-to-high level outputs Propagation delay time, high-to-low-level outputs Differential outpu sign rise time Differential output signal fall time Pulse skew ( | tphl - tphl | ) Output skew(2)
(3)
Test Conditions
Min. 0.9 0.9
Typ. 1.8 1.8 0.8 0.8 150 80 4.5 3.5
Max. 2.6 2.6 1.3 1.3 500 150 1.5 6.7 5.1 4.6 4.6
Units
RL = 50 (LVB) RL = 100 (LV) CL = 10pF See Figure 4
0.4 0.4
ns
ps
Part-to-part skew
Propagation delay time, high impdeance-to high-level output Propagation delay time, high impdeance-to low-level output Propagation delay time, high-level-to-high-impdeance output Propagation delay time, low-level-to-high-impdeance output Maximum operating frequency See Figure 5
3.1 3.1 250
ns
MHz
Notes: 1. All typical values are at 25C 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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PS8573C
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PI90LV387/PI90LVB387 High-Speed Differential Line Drivers Parameter Measurement Information
Figure 1. Voltage and Current Definitions
Figure 2. VOD Test Circuit
Figure 3. Test Circuit & Definitions for the Driver Common-Mode Output Voltage
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.
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PI90LV387/PI90LVB387 High-Speed Differential Line Drivers Parameter Measurement Information (continued)
Figure 4. Test Circuit, Timing, & Voltage Definitions for the Differential Output Signal
Note: 1. All input pulses are supplied by a generator having the following characteristics: tr or tf 1ns, Pulse Repetition Rate (PRR) = 15 Mpps, Pulse width = 10 0.2ns. CL includes instrumentation and fixture capacitance within 0.06m of the D.U.T.
Note: 1. All input pulses are supplied by a generator having the following characteristics: tr or tf 1ns, Pulse Repetition Rate (PRR) = 0.5 Mpps, Pulse width = 500 10ns. CL includes instrumentation and fixture capacitance within 0.06m of the D.U.T.
Figure 5. Enable & Disable Time Circuit & Definitions
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PS8573C 09/22/04
PI90LV387/PI90LVB387 High-Speed Differential Line Drivers Packaging Mechanical: 64-Pin TSSOP (A)
64
.236 .244
6.0 6.2
1
.665 .673
16.9 17.1
1.20 .047 Max.
0.45 .018 0.75 .030
.004 .008 0.09 0.20
SEATING PLANE
.319 BSC 8.1
.004 0.10
.0197 BSC 0.50
.007 0.17 .011 0.27
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
.002 .006
0.05 0.15
Ordering Information
Ordering Code PI90LV387A PI90LV387AE PI90LVB387A PI90LVB387AE Package Code A A A A 64-pin TSSOP Pb-free & Green, 64-pin TSSOP 64-pin TSSOP Pb-free & Green, 64-pin TSSOP Package Type
Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. Number of Transistors = TBD
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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PS8573C 09/22/04

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