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PI90LV03/PI90LVB03
SOTinyTM LVDS Repeater
Features
* * * * * * * * Complies with ANSI/TIA/EIA-644-A LVDS standard LVDS receiver inputs accept LVPECL signals Low jitter 660 Mbps fully differential data path Bus-Terminal ESD exceeds 2kV Single +3.3V supply voltage operation Receiver Differential Input Voltage Threshold < 100mV Receiver open-circuit failsafe Low-Voltage Differential Signaling with typical Output Voltages of 350mV into: - 100 Load (PI90LV03) - 50 Load (PI90LVB03) Typical Propagation Delay Times of 1.5ns Typical Power Dissipation of 20mW @ 200 MHz Outputs are High Impedance with VCC < 1.5V Industrial Temperature Range: -40C to 85C Packaging: - 6-pin space-saving SOT-23 (T)
Description
PI90LV03 and PI90LVB03 are single LVDS Repeaters that use low-voltage differential signaling (LVDS) to support data rates up to 660 Mbps. The PI90LVB03 features high-drive output. Both products are designed for applications requiring high-speed, lowpower consumption, low-noise generation, and a small package. The LVDS Repeaters take an LVDS input signal and provide an LVDS output to address various interface logic requirements such as signal isolation, repeater, stub length, and Optical Transceiver Modules. In many large systems, signals are distributed across backplanes, and the distance between the transmission line and the unterminated receivers are one of the limiting factors for system speed. The buffers can be used to reduce the `stub length' by strategic device placement along the trace length. They can improve system performance by allowing the receiver to be placed very close to the main transmission line or very close to the connector on the card. Longer traces to the LVDS receiver can then be placed after the buffer. The buffer's wide input dynamic range enables them to receive differential signals from LVPECL and LVDS sources. The devices can be used as compact high-speed serial translators between LVPECL and LVDS data lines. The differential translation provides a simple way to mix and match Optical Transceiver ICs from various vendors without redesigning the interfaces.
* * * * *
Function Table
Inputs VID = VA - VB VID > 50mV 50mV < VID < 50mV VID -50mV Open Outputs V Y - VZ H X L H
Applications
The PI90LV03 and PI90LVB03 provide differential translation between LVDS and PECL devices for high-speed, point-to-point interface and telecom applications: - ATM - SONET/SDH - Switches - Routers - Add-Drop Multiplexers High-Speed Differential Cable Repeater Application
Notes: 1. H = high level; L = low level; X = indeterminate
Block Diagram
A B 1 2 5 Y Z
4
Pin Configuration
A B GND 1 2 3 6 5 4 VDD Y Z
RT = ZO TX ZO LVDS Repeater ZO Any LVDS RX RT = ZO
1
PS8660A
07/07/04
PI90LV03/PI90LVB03 SOTinyTM LVDS Repeaters Absolute Maximum Ratings Over Operating Free-Air Temperature (unless otherwise noted)(2)
Supply Voltage Range, VCC(1) ........................................................................... -0.5V to 4V Voltage Range (A, B , or ROUT) .............................................. -0.5 to VCC +0.5V ESD rating (HBIN, 1.5k, 100pF) ............................................................................. 2V Storage Temperature Range ..........................................................-65C to 150C Lead Temperature 1.6 mm (1/16 inch) from case for 10 seconds................ 250C
Notes: 1. All voltage values, except differential I/O bus voltages, are with respect to ground terminal. 2. 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.
Short Stubs
TX
PI90LVB03
RT
PI90LV03
PI90LV03
Long TraceSupport
RT RX
RT
ASIC
RX
Figure 2. Backplance Stub-Hider Application
Dissipation Rating Table
Package 6-pin SOT-23 (T) TA 25C Power Rating 385mW Derating Factor Above TA = 25C 3.1mW/C TA = 85C Power Rating 200mW
Notes: 1. This is the inverse of the junction-to-ambient thermal vsistance when board-mounted (low-K) and with no air flow.
Recommended Operating Conditions
Symbol VCC | VID | VIC TA Supply Voltage Magnitude of differential Voltage Common-Mode Intput Voltage(6) Operating Free-air Temperature Paramters Min. 3.0 0.1 0 -40 Typ. 3.3 Max. 3.6 0.6 2.0 | VID | 2 V C Units
85
2
PS8660B
09/07/04
PI90LV03/PI90LVB03 SOTinyTM LVDS Repeaters Common-Mode Input Voltage vs. Differenital Input Voltage
3 VIC - Common-Mode Input Voltage - V 2.5 2 VCC = 3.6V 1.5 1 0.5 0 VCC = 3.6V
VCC = 3.6V
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
I VID I - Differential Input Voltage - V
Note: 1. All typical values are at 25C and with a 3.3V supply.
Figure 3. VIC vs. VID and VCC
3
PS8660B
09/07/04
PI90LV03/PI90LVB03 SOTinyTM LVDS Repeaters Electrical Characteristics over Recommended Operating Conditions (unless otherwise noted).
Symbol VITH+ VITHII IID | VOD | | VOD | VOC(SS) VOC(SS) VOC(PP) ICC Parameter Positive-going differential input voltage threshold Negative-going differential input voltage threshold Input Current (A or B inputs) High-level input current (IIA - IIB) Differential output voltage magnitude Change in differential output voltage magnitude Steady-State common-mode output voltage Change in Steady-State common-mode output voltage between logic states Peak-to-peak common-mode output voltage VI = 0V or VCC No load Supply Current VI = 0V or VCC, RL = 100 (LV03) VI = 0V or VCC, RL = 50 (LVB03) VOY or VOZ = 0V IOS Short-circuit output current VOD = 0V IO(OFF) CI Power-off output current Input load capacitance VCC = 0V, VO = 3.6V 3 LV03 LVB03 LV03 LVB03 See Figure 5 Test Condition See figures 3 and 4 and table 1 -50 VI - 0V VI = 2.4V or VCC -0.8 VIA = 0V, VIB = 0.1V VIA = 2.4V, VIB = 2.3V RL = 100 (LV03); RL = 50 (LVB03); See Figure 4 247 -50 1.125 -50 25 7 9.5 18 3 6 350 -1.2 2 454 50 1.375 50 100 9 12.5 25 10 20 10 20 1 A pF mA mV V mV 20 A Min.
Typ.(1) Max. Units 50 mV
4
PS8660B
09/07/04
PI90LV03/PI90LVB03 SOTinyTM LVDS Repeaters Receiver Switching Characteristics over Recommended Operating Conditions (unless otherwise noted)
Symbol tPLH tPHL tR tF tsk(p) tskpp fmax Parameter Propagation delay, low to high level outputs Propagation delay, high to low level outputs Output signal rise time Output signal fall time Pulse skew ( | tPHL - tPLH | Part-to-part skew Maximum throughtput data rate(3) )(2) LV03 RL = 100, LVB03 RL = 50; CL = 10pF See Figure 6 Test Conditions Min. Typ. 1.4 1.4 0.5 0.5 50 1.5 660 Max. 6 6 1 1 ps ns mbps ns Units
Notes: 1. All typical values are at 25C and with a 3.3V supply 2. tsk(p) is the magnitude of the time difference between the high-to-low and low-to-high propagation delay times at an output. 3. fmax generator input conditions: 50% duty cycle, 200mV, Output criteteria: 45% to 55% duty cycle, VOD 250mV
Parameter Measurement Information
A VIA + VIB 2 VIC VID DY DZ IOY
VIA
VIB
B
IOZ
VOD VOZ
VOY
VOC
VOY= VOZ 2
Figure 4. Voltage Definitions
Table 1. Receiver Minimum and Maximum Input Threshold Test Voltages
Applied Voltages (V) VIA 1.25 1.15 2.4 2.3 0.05 0 1.5 0.9 2.4 1.8 0.6 0 VIB 1.20 1.20 2.35 2.35 0 0.05 0.9 1.5 1.8 2.4 0 0.6 Resulting Differenital Input Votlages (mV) VID 50 -50 50 -50 50 -50 600 -600 600 -600 600 -600 Resulting Common-Mode Input Voltages (V) VIC 1.2 1.2 2.35 2.35 0.05 0.05 1.2 1.2 2.1 2.1 0.3 0.3
5
PS8660B
09/07/04
PI90LV03/PI90LVB03 SOTinyTM LVDS Repeaters
A
DY RL (Note 2) 50pF VOC
VI VI
1.4V 1V VOC(PP)
B
DZ
VOC VOC(SS)
Notes: 1. All input pulses are supplied by a generator having the following characteristics: tr or tf 1ns, Pulse Repetition Rate (PPR) = 0.5 Mpps, pulse width = 500 10ns. CL includes instrumentation and fixture capacitance within 0.06m of the D.U.T. The test measurement of VOC(PP) is made on test equipment with a -3dB bandwidth of at least 300MHz. 2. RL = 49.9 1% for PI90LV03 or 24.9 1% for PI90LVB03. 3. To verify output max signaling rate , the output signal transition time (tr/tf) should not exceed 0.76ns.
Figure 5. Test Circuit and Definitions for the Driver Common-Mode Output Voltage
DY A B VID DZ VOD RL = (Note 3)
CL= 10pF (2 places)
A B
Input tPLH VOD(H) VOD(L) tPHL
1.4V 1.0V
Output
100% 80% 0V 20% 0% tr
tf
Notes: 1. All input pulses are supplied by a generator having the following characteristics: tr or tf 1ns, Pulse Repetition Rate (PPR) = 50 Mpps, pulse width = 10 0.2ns. CL includes instrumentation and fixture capacitance within 0.06m of the D.U.T. 2. This point is 1.4V with VCC = 3.3V or 1.2V with VCC = 2.7V. 3. RL = 100 1% for PI90LV03 or 50 1% for PI90LVB03.
Figure 6. Test Circuit and Definitions
6
PS8660B
09/07/04
PI90LV03/PI90LVB03 SOTinyTM LVDS Repeaters Packaging Mechanical: 6-Pin SOT (T)
0.075 1.90 BSC
6
5
4
0.059 1.50 0.068 1.75
0.102 2.60 0.1183.00
Datum "A"
0 - 10
2
3
0.037 0.95 BSC
0.004 0.10 0.023 0.60
0.014 0.35 0.019 0.50
0.110 2.80 0.118 3.00
MAX. 0.057 1.45 SEATING PLANE
0.000 0.00 0.005 0.15
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
Ordering Information
Ordering Code PI90LV03TX PI90LV03TEX PI90LVB03TX PI90LVB03TEX Package Code T T T T Package Description 6-pin SOT-23 Pb-free & Green, 6-pin SOT-23 6-pin SOT-23 Pb-free & Green, 6-pin SOT-23 Top Marking L9 LC LA LD
Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. X = Tape and reel
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
7
PS8660B 09/07/04

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