PI90LV3811/PI90LVB3811 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 High-Speed Differential Line Drivers Features Description • Ten line drivers meet or exceed the requirements of the ANSI EIA/TIA-644 Standard • Designed for signaling rates up to 660 Mbps with very low radiation (EMI) • Low voltage differential signaling with typical output voltage of 350mV into a: 100-ohm load (PI90LV3811) 50-ohm load (PI90LVB3811) • Propagation delay times less than 2.9ns • 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 • Driver is high impedance when disabled or with VCC <1.5V • Bus-pin ESD protection exceeds 10kV • Low voltage TTL (LVTTL) logic inputs are 5V tolerant • Package: 48-Pin TSSOP (A) The PI90LV3811 and PI90LVB3811 consist of ten differential line drivers that implement the electrical characteristics of low-voltage differential signaling (LVDS). This signaling technique lowers output voltage levels to reduce the power, increase switching speeds, and allow operation with a 3V supply rail. Any current-mode LVDS driver will deliver a minimum differential output voltage magnitude of 247mV into a 100-Ohm load (PI90LV3811) or 50-Ohm load (PI90LVB3811) when enabled. The PI90LVB3811 doubles the output drive current to achieve LVDS levels with a 50-Ohm load. 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-Ohms. The transmission media may be printed-circuit board traces, backplanes, or cables. The large number of drivers integrated into the same substrate, along 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 10-channel receivers, the PI90LV3810 or PI90LVR3810, over 300 million data transfers per second in singleedge clocked systems are possible with very little power. PI90LV3811 & PI90LVB3811 (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, the driver outputs are a high impedance. Each driver input (DIN) and enable (EN) have an internal pulldown that will drive the input to a low level when open circuited. The PI90LV3811 and PI90LVB3811 are characterized for operation from –40°C to 85°C. 1 PS8663 02/21/03 PI90LV3811/PI90LVB3811 High-Speed Differential Line Drivers 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Pin Configuration Block Diagram 2 PS8663 02/21/03 PI90LV3811/PI90LVB3811 High-Speed Differential Line Drivers 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Absolute Maximum Ratings Over Operating Free-Air Temperature (unless otherwise noted)† Recommended Operating Conditions Supply Voltage Range, VCC(1) ........................................ –0.5V to 4V Voltage Range: Inputs ............................................ –0.5V to 6V DOUT+ or DOUT– ................................................................. –0.5V to 4V Electrostatic Discharge(2): (DOUT+,DOUT– 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 ............................. –65°C to 150°C Lead Temperature 1.6mm (1/16 inch) from case for 10 seconds .............................................. 260°C M in. Nom. M ax. Supply Voltage, VCC 3.0 3.3 3.6 High- Level Input Voltage, VIH 2.0 Units V Low- Level Input Voltage, VIL 0.8 Operating free- air temperature, TA –40 85 °C Driver Function Table † 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. Diffe re ntial Input Enable s Outputs DIN EN DOUT+ DOUT– H H H L L H L H X L Z Z Open H L H Notes: 1. All voltage values, except differential I/O bus voltages, are with respect to ground terminal. 2. Tested in accordance with MIL-STD-883C Method 3015.7 H = high level, L = low level, X = irrelevent, Z = high impedance (off) 3 PS8663 02/21/03 PI90LV3811/PI90LVB3811 High-Speed Differential Line Drivers 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Electrical Characteristics Over Recommended Operating Conditions (unless otherwise noted) Symbol VOH Parameter Differential output voltage magnitude ∆ VOH Change in differential output voltage magnitude between logic states VOC(SS) Steady-state common-mode output voltage ∆VOC(SS) Change in steady-state common-mode output voltage between logic states VOC(PP) Peak-to-peak common-mode output voltage ICC Supply current Test Condition RL = 50-Ohm (PI90LVB3811) RL = 100-Ohm (PI90LV3811) CL = 10pF See Figures 1 and 2 See Figure 3 Min. Typ.(1) Max. 247 340 454 -50 50 1.125 1.375 -50 50 50 150 RL = 100-Ohm (PI90LV3811) Enabled, VIN = GND or VCC 50 70 RL = 50-Ohm (PI90LVB3811) Enabled, VIN = GND or VDD 77 120 Disabled, VIN = GND or VDD 0.5 1.5 IIH High-level input current VIN = 2V 3 20 IIL Low-level input current VIL = 0.8V 2 10 IOS Short-circuit output current IOZ VODOUT + or VODOUT - = 0V ± 24 VOD = 0V ±12 High-impedance output current VOD = 0V or VCC ±1 Power-off output current VCC = 1.5V, VO= 2.45V ±1 CIN Input capacitance VI = 0.4 sin (4E6π t) +0.5V 5 CO Output capacitance VI = 0.4 sin (4E6π t) +0.5V, Disabled 9.4 IO(OFF) Units mV V mV mA µA mA µA pF Note: 1. All typical values are at 25°C and with a 3.3V supply. 4 PS8663 02/21/03 PI90LV3811/PI90LVB3811 High-Speed Differential Line Drivers 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Switching Characteristics Over Recommended Operating Conditions (unless otherwise noted) Min. Typ.(1) Max. Propagation delay time, low-to-highlevel output 0.9 1.7 2.9 Propagation delay time, high-to-low level output 0.9 1.6 2.9 0.4 0.8 1.3 0.4 0.8 1.3 Symbol Parameter tPLH tPHL tr Differential output signal rise time tf Differential output signal fall time Test Condition RL = 50-Ohm (PI90LVB3811) RL = 100-Ohm (PI90LV3811) CL = 10pF See Figure 4 tsk(p) Pulse skew ( I tPHL - tPLH I ) 150 500 tsk(o) Output skew(2) 80 150 tsk(pp) Part-to-part skew(3) tPZH Propagation delay time, highimpedance to high-level output 6.4 15 tPZL Propagation delay time, highimpedance to low-level output 5.9 15 3.5 15 3.5 15 tPHZ Propagation delay time, high-level to high-impedance output tPLZ Propagation delay time, high-level to low-impedance output Units ns ps 1.5 See Figure 5 ns Notes: 1. All typical values are at 25°C 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 5 PS8663 02/21/03 PI90LV3811/PI90LVB3811 High-Speed Differential Line Drivers 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Parameter Measurement Information Figure 1. Voltage and Current Definitions Figure 2. VOD Test Circuit 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. Figure 3. Test Circuit & Definitions for the Driver Common-Mode Output Voltage 6 PS8663 02/21/03 PI90LV3811/PI90LVB3811 High-Speed Differential Line Drivers 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Parameter Measurement Information (continued) 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. 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) = 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 7 PS8663 02/21/03 PI90LV3811/PI90LVB3811 High-Speed Differential Line Drivers 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Typical Characteristics Supply Current (RMS) vs. Switching Frequency tPLH – Low-to-High Propagration Delay Time - ns Low-to-High Propagation Delay Time vs. Free-Air Temperature 100 90 VCC = 3.6V 80 70 VCC = 3.3V 60 VCC = 3V 50 All inputs loaded & enabled 40 0 50 100 150 200 250 300 2.1 2.0 VCC =3.6V 1.9 1.8 1.7 VCC =3.3V 1.6 VCC =3V 1.5 1.4 1.3 –40 –20 0 20 40 60 80 100 TA –Free-Air Temperature - ˚C f – Frequency – MHz Figure 6. tPHL – High-to-Low Propagration Delay Time - ns ICC – Supply Current – mA 110 Figure 7. High-to-Low Propagation Delay Time vs. Free-Air Temperature 2.2 2.0 VCC =3V 1.8 VCC =3.3V 1.6 1.4 VCC =3.6V 1.2 1.0 –40 –20 0 20 40 60 80 100 TA –Free-Air Temperature - ˚C Figure 8. 8 PS8663 02/21/03 PI90LV3811/PI90LVB3811 High-Speed Differential Line Drivers 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Packaging Mechanical: 48-Pin TSSOP (A) 48 .236 .244 1 6.0 6.2 .488 12.4 .496 12.6 .047 1.20 Max SEATING PLANE .004 0.09 .008 0.20 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .0197 BSC 0.50 .002 .006 0.05 0.15 .007 .010 0.17 0.27 0.45 .018 0.75 .030 .319 BSC 8.1 Ordering Information Orde ring Code Package Code Package Type PI90LV3811A A48 48- pin TSSOP PI90LVB3811A A48 48- pin TSSOP Ope rating Range –40°C to 85°C Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 9 PS8663 02/21/03