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FIN1028 3.3V LVDS 2-Bit High Speed Differential Receiver
March 2001 Revised September 2001
FIN1028 3.3V LVDS 2-Bit High Speed Differential Receiver
General Description
This dual receiver is designed for high speed interconnects utilizing Low Voltage Differential Signaling (LVDS) technology. The receiver translates LVDS levels, with a typical differential input threshold of 100 mV, to LVTTL signal levels. LVDS provides low EMI at ultra low power dissipation even at high frequencies. This device is ideal for high speed transfer of clock and data. The FIN1028 can be paired with its companion driver, the FIN1027, or any other LVDS driver.
Features
s Greater than 400Mbs data rate s 3.3V power supply operation s 0.4ns maximum differential pulse skew s 2.5ns maximum propagation delay s Low power dissipation s Power-Off protection s Fail safe protection for open-circuit, shorted and terminated conditions s Meets or exceeds the TIA/EIA-644 LVDS standard s Flow-through pinout simplifies PCB layout s 8-Lead SOIC package saves space
Ordering Code:
Order Number FIN1028M Package Number M08A Package Description 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code.
Pin Descriptions
Pin Name ROUT1, ROUT2 RIN1+, RIN2+ RIN1-, RIN2- VCC GND Description LVTTL Data Outputs Non-inverting LVDS Inputs Inverting LVDS Inputs Power Supply Ground
Connection Diagram
Function Table
Input RIN+ L H RIN+ H L Outputs ROUT L H H TOP VIEW
Fail Safe Condition
H = HIGH Logic Level L = LOW Logic Level Fail Safe = Open, Shorted, Terminated
(c) 2001 Fairchild Semiconductor Corporation
DS500503
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FIN1028
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) DC Input Voltage (RINx+, RINx-) DC Output Voltage (ROUTx) DC Output Current (IO) Storage Temperature Range (TSTG) Max Junction Temperature (TJ) Lead Temperature (TL) (Soldering, 10 seconds) ESD (Human Body Model) ESD (Machine Model) 260C
-0.5V to +4.6V -0.5V to +4.7V -0.5V to +6V
16 mA
Recommended Operating Conditions
Supply Voltage (VCC) Input Voltage (VIN) Magnitude of Differential Voltage (|VID|) Common-mode Input Voltage (VIC) 0.05V to 2.35V Operating Temperature (TA) 100 mV to VCC 3.0V to 3.6V 0 to VCC
-65C to +150C
150C
-40C to +85C
6500V 300V
Note 1: The "Absolute Maximum Ratings": are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature and output/input loading variables. Fairchild does not recommend operation of circuits outside databook specification.
DC Electrical Characteristics
Over supply voltage and operating temperature ranges, unless otherwise specified
Symbol VTH VTL IIN II(OFF) VOH VOL VIK ICC CIN COUT Parameter Differential Input Threshold HIGH Differential Input Threshold LOW Input Current Power-OFF Input Current Output HIGH Voltage Output LOW Voltage Input Clamp Voltage Power Supply Current Input Capacitance Output Capacitance Test Conditions See Figure 1 and Table 1 See Figure 1 and Table 1 VIN = 0V or VCC VCC = 0V, VIN = 0V or 3.6V IOH = -100 A IOH = -8 mA IOH = 100 A IOL = 8 mA IIK = -18 mA (RIN+ = 1V and RIN- = 1.4V) or (RIN+ = 1.4V and RIN- = 1V) 4 6 -1.5 9 VCC -0.2 2.4 0.2 0.5 -100 20 20 Min Typ (Note 2) 100 Max Units mV mV A A V V V mA pF pF
Note 2: All typical values are at TA = 25C and with VCC = 3.3V.
AC Electrical Characteristics
Over supply voltage and operating temperature ranges, unless otherwise specified
Symbol tPLH tPHL tTLH tTHL tSK(P) tSK(LH), tSK(HL) tSK(PP) Parameter Differential Propagation Delay LOW-to-HIGH Differential Propagation Delay HIGH-to-LOW Output Rise Time (20% to 80%) Output Fall Time (80% to 20%) Pulse Skew |tPLH - tPHL| Channel-to-Channel Skew (Note 4) Part-to-Part Skew (Note 5) |VID| = 400 mV, CL = 10 pF, See Figure 1 and Figure 2 Test Conditions Min Typ (Note 3) 0.9 0.9 0.5 0.5 0.4 0.3 1.0 2.5 2.5 Max Units ns ns ns ns ns ns ns
Note 3: All typical values are at TA = 25C and with VCC = 3.3V. Note 4: tSK(LH), tSK(HL) is the skew between specified outputs of a single device when the outputs have identical loads and are switching in the same direction. Note 5: tSK(PP) is the magnitude of the difference in propagation delay times between any specified terminals of two devices switching in the same direction (either LOW-to-HIGH or HIGH-to-LOW) when both devices operate with the same supply voltage, same temperature, and have identical test circuits.
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FIN1028
Note A: All input pulses have frequency = 10 MHz, tR or tF = 1 ns Note B: CL includes all probe and fixture capacitances
FIGURE 1. Differential Driver Propagation Delay and Transition Time Test Circuit TABLE 1. Receiver Minimum and Maximum Input Threshold Test Voltages
Applied Voltages (V) VIA 1.25 1.15 2.4 2.3 0.1 0 1.5 0.9 2.4 1.8 0.6 0 VIB 1.15 1.25 2.3 2.4 0 0.1 0.9 1.5 1.8 2.4 0 0.6 Resulting Differential Input Voltage (mV) VID 100 -100 100 -100 100 -100 600 -600 600 -600 600 -600 Resulting Common Mode Input Voltage (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
FIGURE 2. AC Waveforms
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FIN1028
DC /AC Typical Performance Curves
FIGURE 3. Output High Voltage vs. Power Supply Voltage
FIGURE 4. Output Low Voltage vs. Power Supply Voltage
FIGURE 5. Output Short Circuit Current vs. Power Supply Voltage
FIGURE 6. Power Supply Current vs. Frequency
FIGURE 7. Power Supply Current vs. Ambient Temperature
FIGURE 8. Differential Propagation Delay vs. Power Supply Voltage
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FIN1028
DC /AC Typical Performance Curves
(Continued)
FIGURE 9. Differential Propagation Delay vs. Ambient Temperature
FIGURE 10. Differential Skew (tPLH - tPHL) vs. Power Supply Voltage
FIGURE 11. Differential Skew (tPHL - tPHL) vs. Ambient Temperature
FIGURE 12. Differential Propagation Delay vs. Differential Input Voltage
FIGURE 13. Differential Propagation Delay vs. Common-Mode Voltage
FIGURE 14. Transition Time vs. Power Supply Voltage
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FIN1028
DC /AC Typical Performance Curves
(Continued)
FIGURE 15. Transition Time vs. Ambient Temperature
FIGURE 16. Differential Propagation Delay vs. Load
FIGURE 17. Differential Propagation Delay vs. Load
FIGURE 18. Transition Time vs. Load
FIGURE 19. Transition Time vs. Load
FIGURE 20. Power Supply Current vs. Power Supply Voltage
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FIN1028 3.3V LVDS 2-Bit High Speed Differential Receiver
Physical Dimensions inches (millimeters) unless otherwise noted
8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M08A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 7 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com
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