STLVDS31 HIGH SPEED DIFFERENTIAL LINE DRIVERS ■ ■ ■ ■ ■ ■ ■ ■ ■ MEETS OR EXCEEDS THE REQUIREMENTS OF ANSI TIA/EIA-644 STANDARD LOW VOLTAGE DIFFERENTIAL SIGNALING WITH TYPICAL OUTPUT VOLTAGE OF 350mV AND A 100Ω LOAD TYPICAL OUTPUT VOLTAGE RISE AND FALL TIMES OF 750ps (400Mbps) TYPICAL PROPAGATION DELAY TIMES OF 1.7ns OPERATES FROM A SINGLE 3.3V SUPPLY POWER DISSIPATION 25mW TYPICAL PER DRIVER AT 200MHz DRIVER AT HIGH IMPEDANCE WHEN DISABLED OR WITH VCC =0V PIN COMPATIBLE WITH THE AM26LS31, SN65LVD31 LOW VOLTAGE TTL (LVTTL) LOGIC INPUT LEVELS DESCRIPTION The STLVDS31 is a quad differential line drivers that implements the electrical characteristics of low voltage differential signaling (LVDS). This signaling technique lowers the output voltage levels of 5V differential standard levels (such as TIA/EIA-422B) to reduce the power, increase the switching speeds and allows operations with a SOP TSSOP 3.3V supply rail. Any of the four current mode drivers will deliver a minimum differential output voltage magnitude of 247mV into a 100Ω load when enabled. The intended application of this device and signalling technique is for point-to-point baseband data transmission over controlled impedance media approximately 100Ω. The transmission media may be printed circuit board traces, backplanes or cables. The ultimate rate and distance of data transfer is dependent upon the attenuation characteristics of the media and noise coupling to the environment. The STLVDS31 is characterized for operation from -40°C to 85°C. ORDERING CODES Type Temperature Range Package Comments STLVDS31BD STLVDS31BDR STLVDS31BTR -40 to 85 °C -40 to 85 °C -40 to 85 °C SO-16 (Tube) SO-16 (Tape & Reel) TSSOP16 (Tape & Reel) 50parts per tube / 20tube per box 2500 parts per reel 2500 parts per reel May 2003 1/13 STLVDS31 PIN CONFIGURATION PIN DESCRIPTION PlN N° SYMBOL 1, 7, 9, 15 2, 6, 10, 14 3, 5, 11, 13 4 12 8 1A to 4A 1Y to 4Y 1Z to 4Z G G GND VCC 16 LOGIC DIAGRAM AND LOGIC SYMBOL 2/13 NAME AND FUNCTION Driver Inputs Driver Outputs Driver Outputs Enable Enable Ground Supply Voltage STLVDS31 TRUTH TABLE INPUT ENABLES OUTPUTS A G G Y Z H L H L X OPEN OPEN H H X X L H X X X L L H X L H L H L Z L L L H L H Z H H L=Low level, H=High Level, X=Don’t care, Z= High Impedance ABSOLUTE MAXIMUM RATINGS Symbol VCC VI Tstg Parameter Supply Voltage (Note 1) DC Input Voltage Value Unit -0.5 to 4.6 V -0.5 to (VCC + 0.5) V -65 to +150 °C Storage Temperature Range Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Note 1: All voltages except differential I/O bus voltage, are with respect to the network ground terminal. RECOMMENDED OPERATING CONDITIONS Symbol Min. Typ. Max. Unit VCC Supply Voltage Parameter 3.0 3.3 3.6 V VIH HIGH Level Input Voltage 2.0 VILI LOW Level Input Voltage TA Operating Temperature Range -40 V 0.8 V 85 °C 3/13 STLVDS31 ELECTRICAL CHARACTERISTICS (Over recommended operating conditions unless otherwise noted. All typical values are at TA = 25°C, and VCC = 3.3V) Symbol VOD ∆VOD ∆VOC(SS) VOC(SS) VOC(PP) ICC Parameter Differential Output Voltage Change in Differential Output Voltage Between Logic State Change in Steady-state Common Mode Output Voltage Between Logic State Steady-state Common Mode Output Voltage Peak to Peak Common mode Output Voltage Supply Current Test Conditions Min. Typ. Max. 247 350 454 mV 50 mV 1.375 V 50 mV 80 150 mV 11.5 20 mA VIN = 0.8V or 2V, Enabled, RL = 100Ω 25 35 mA VIN = 0 or VCC, Disabled 0.3 1 mA RL = 100Ω Fig. 2 -50 Fig. 3 1.125 Fig. 3 -50 VIN = 0.8V or 2V, Enabled, No Load IIH High Level Input Current VIH = 2V IIL Low Level Input Current VIL = 0.8V ISC Short Circuit Output Current VO(Y) or VO(Z) = 0V VOD = 0 IOZ IOFF High Impedance Output Current Power OFF Output Current CIN Input Capacitance 4/13 1.2 4 20 µA 0.6 10 µA 6.1 -24 mA ± 12 mA ±1 µA ±1 µA VO = 0 or 2.4V VCC = 0 Unit VO = 2.4V 3 pF STLVDS31 SWITCHING CHARACTERISTICS (Unless otherwise noted. Typical values are referred to TA = 25°C and VCC = 3.3V) Symbol tPLH tPHL tr tf tsk(P) tsk(O) tPZH tPZL tPHZ tPLZ Parameter Propagation Delay Time, Low to High Output Propagation Delay Time, High to Low Output Differential Output Signal Rise Time Differential Output Signal Fall Time Pulse Skew (|tTHL = tTLH|) Test Conditions RL = 100Ω Fig. 2 CL = 10pF Channel to Channel Output Skew (note1) Propagation Delay Time, Fig. 4 High Impedance to High Level Output Propagation Delay Time, High Impedance to Low Level Output Propagation Delay Time, High Level to High Impedance Output Propagation Delay Time, Low Level to High Impedance Output Min. Typ. Max. Unit 0.5 1.4 2 ns 1 1.7 2.5 ns 0.4 0.5 0.6 ns 0.4 0.5 0.6 ns 0.3 0.6 ns 0 0.3 ns 5.4 15 ns 2.5 15 ns 8.1 15 ns 7.3 15 ns Note 1: tsk(O) is the maximum delay time difference between drivers on the same device. Note 2: RS-232 IN to TTL-CMOS OUT (from 50% to 50%) Figure 1 : Voltage and Current Definitions 5/13 STLVDS31 Figure 2 : Test Circuit, Timing And Voltage Definitions For Differential Output Signal Note A: All input pulse are supplied by a generator having the following characteristics: tr or tf ≤ 1ns, pulse repetition rate (PRR) = 50Mpps, pulse width = 10 ± 0.2ns. Note B: CL includes instrumentation and fixture capacitance within 6mm of the D.U.T. Figure 3 : Test Circuit And Definitions For The Driver Common Mode Output Voltage Note A: All input pulse are supplied by a generator having the following characteristics: tr or tf ≤ 1ns, pulse repetition rate (PRR) = 50Mpps, pulse width = 10 ± 0.2ns. Note B: CL includes instrumentation and fixture capacitance within 6mm of the D.U.T Note C: The measurement of VOC(PP) is made on test equipment with a -3dB bandwidth of at least 300MHz 6/13 STLVDS31 Figure 4 : Enable And Disable Time Test Circuit And Waveform Note A: All input pulse are supplied by a generator having the following characteristics: tr or tf ≤ 1ns, pulse repetition rate (PRR) = 0.5Mpps, pulse width = 500 ± 10ms. Note B: CL includes instrumentation and fixture capacitance within 6mm of the D.U.T. 7/13 STLVDS31 TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25°C) Figure 5 : Supply Current vs Temperature Figure 8 : Propagation Delay Time Figure 6 : Supply Current vs Temperature Figure 9 : Differential Output Signal Figure 7 : Propagation Delay Enable to Output 8/13 STLVDS31 SO-16 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.004 0.008 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45˚ (typ.) D 9.8 E 5.8 10 0.385 6.2 0.228 0.393 0.244 e 1.27 0.050 e3 8.89 0.350 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.62 8 0.024 ˚ (max.) PO13H 9/13 STLVDS31 TSSOP16 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0079 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 1 e 0.65 BSC K 0˚ L 0.45 A 0.60 0.0256 BSC 8˚ 0˚ 0.75 0.018 8˚ 0.024 0.030 A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 10/13 STLVDS31 Tape & Reel SO-16 MECHANICAL DATA mm. inch DIM. MIN. A TYP MAX. MIN. 330 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 TYP. 0.504 22.4 0.519 0.882 Ao 6.45 6.65 0.254 0.262 Bo 10.3 10.5 0.406 0.414 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 11/13 STLVDS31 Tape & Reel TSSOP16 MECHANICAL DATA mm. inch DIM. MIN. A MAX. MIN. 330 13.2 TYP. MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 12/13 TYP 0.504 22.4 0.519 0.882 Ao 6.7 6.9 0.264 0.272 Bo 5.3 5.5 0.209 0.217 Ko 1.6 1.8 0.063 0.071 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 STLVDS31 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © The ST logo is a registered trademark of STMicroelectronics © 2003 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. © http://www.st.com 13/13