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STLVDS3487
HIGH SPEED DIFFERENTIAL LINE DRIVERS
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MEETS OR EXCEEDS THE REQUIREMENTS OF ANSI TIA/EIA-644 STANDARD LOW VOLTAGE DIFFERENTIAL SIGNALING WITH TYPICAL OUTPUT VOLTAGE OF 350mV AND A 100 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 MC3487 AND SN65LVD3487 LOW VOLTAGE TTL (LVTTL) LOGIC INPUT LEVELS
SOP
TSSOP
DESCRIPTION The STLVDS3487 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 ORDERING CODES
Type STLVDS3487BD STLVDS3487BDR STLVDS3487BTR Temperature Range -40 to 85 C -40 to 85 C -40 to 85 C
operations with a 3.3V supply rail. Any of the four current mode drivers will deliver a minimum differential output voltage magnitude of 247mV into a 100 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 100. 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 STLVDS3487 is characterized for operation from -40C to 85C.
Package SO-16 (Tube) SO-16 (Tape & Reel) TSSOP16 (Tape & Reel)
Comments 50parts per tube / 20tube per box 2500 parts per reel 2500 parts per reel
May 2003
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STLVDS3487
PIN CONFIGURATION
PIN DESCRIPTION
PlN N 1, 7, 9, 15 2, 6, 10, 14 3, 5, 11, 13 4 12 8 16 SYMBOL 1A to 4A 1Y to 4Y 1Z to 4Z 1EN, 2EN 3EN, 4EN GND VCC NAME AND FUNCTION Driver Inputs Driver Outputs Driver Outputs Drivers 1 and 2 Enable Drivers 3 and 4 Enable Ground Supply Voltage
LOGIC DIAGRAM AND LOGIC SYMBOL
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STLVDS3487
TRUTH TABLE
INPUT A H L X OPEN ENABLES EN H H L H Y H L Z L OUTPUTS Z L H Z H
L=Low level, H=High Level, X=Don't care, Z= High Impedance
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VI Tstg Supply Voltage (Note 1) DC Input Voltage Storage Temperature Range Parameter Value -0.5 to 4.6 -0.5 to (VCC + 0.5) -65 to +150 Unit V V C
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 VCC VIH VILI TA Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage Operating Temperature Range -40 Parameter Min. 3.0 2.0 0.8 85 Typ. 3.3 Max. 3.6 Unit V V V C
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STLVDS3487
ELECTRICAL CHARACTERISTICS (Over recommended operating conditions unless otherwise noted. All typical values are at TA = 25C, and VCC = 3.3V)
Symbol VOD VOD VOC(SS) 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 RL = 100 Test Conditions Fig. 2 Min. 247 -50 Typ. 350 Max. 454 50 Unit mV mV
Fig. 3
1.125
1.2
1.375
V
VOC(SS) VOC(PP) ICC
Fig. 3
-50 80
50 150 20 35 1 20 10 -24 12 1 1 3
mV mV mA mA mA A A mA mA A A pF
VIN = 0.8V or 2V, Enabled, No Load VIN = 0.8V or 2V, Enabled, RL = 100 VIN = 0 or VCC, Disabled
11.5 25 0.3 4 0.6 6.1
IIH IIL ISC IOZ IOFF CIN
High Level Input Current Low Level Input Current
VIH = 2V VIL = 0.8V
Short Circuit Output Current VO(Y) or VO(Z) = 0V VOD = 0 High Impedance Output Current Power OFF Output Current Input Capacitance VO = 0 or 2.4V VCC = 0 VO = 2.4V
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STLVDS3487
SWITCHING CHARACTERISTICS (Unless otherwise noted. Typical values are referred to TA = 25C and VCC = 3.3V)
Symbol tPLH tPHL tr tf tsk(P) tsk(O) tPZH 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|) RL = 100 Fig. 2 Test Conditions CL = 10pF Min. 0.5 1 0.4 0.4 Typ. 1.4 1.7 0.5 0.5 0.3 0 5.4 Max. 2 2.5 0.6 0.6 0.6 0.3 15 Unit ns ns ns ns ns ns ns
tPZL
tPHZ
tPLZ
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
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
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STLVDS3487
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
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STLVDS3487
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.
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STLVDS3487
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25C) 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
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STLVDS3487
SO-16 MECHANICAL DATA
DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 8 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45 (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.004 MIN. inch TYP. MAX. 0.068 0.008 0.064 0.018 0.010
PO13H
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STLVDS3487
TSSOP16 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8 0.75 0 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0079 0.201 0.260 0.176 inch
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
0080338D
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STLVDS3487
Tape & Reel SO-16 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.45 10.3 2.1 3.9 7.9 12.8 20.2 60 22.4 6.65 10.5 2.3 4.1 8.1 0.254 0.406 0.082 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.262 0.414 0.090 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch
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STLVDS3487
Tape & Reel TSSOP16 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.7 5.3 1.6 3.9 7.9 12.8 20.2 60 22.4 6.9 5.5 1.8 4.1 8.1 0.264 0.209 0.063 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.272 0.217 0.071 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch
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STLVDS3487
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. (c) The ST logo is a registered trademark of STMicroelectronics (c) 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. (c) http://www.st.com
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