DS34LV86T 3V Enhanced CMOS Quad Differential Line Receiver General Description Features The DS34LV86T is a high speed quad differential CMOS receiver that meets the requirements of both TIA/EIA-422-B and ITU-T V.11. The CMOS DS34LV86T features typical low static ICC of 9 mA which makes it ideal for battery powered and power conscious applications. The TRI-STATE ® enables, EN, allow the device to be disabled when not in use to minimize power consumption. The dual enable scheme allows for flexibility in turning receivers on and off. The receiver output (RO) is guaranteed to be High when the inputs are left open. The receiver can detect signals as low as ± 200 mV over the common mode range of ± 10V. The receiver outputs (RO) are compatible with TTL and LVCMOS levels. n n n n n n n n n n n n n Connection Diagram Low power CMOS design (30 mW typical) Interoperable with existing 5V RS-422 networks Industrial temperature range Meets TIA/EIA-422-B (RS-422) and ITU-T V.11 recommendation 3.3V Operation ± 7V common mode range VID = 3V ± 10V common mode range VID = 0.2V Receiver OPEN input failsafe feature Guaranteed AC parameter: Maximum Receiver Skew: 4 ns Transition time: 10 ns Pin compatible with DS34C86T 32 MHz Toggle Frequency 6.5k ESD Tolerance (HBM) Available in SOIC packaging Truth Table Dual-In-Line Package Enable Inputs Output EN RI+–RI− RO L X Z H VID ≥ +0.2V H H VID ≤ −0.2V L H Open† H L = Logic Low H = Logic High X = Irrelevant Z = TRI-STATE † = Open, Not Terminated DS012644-1 Top View Order Number DS34LV86TN, DS34LV86TM See NS Package Number M16A or N16E TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 1998 National Semiconductor Corporation DS012644 www.national.com DS34LV86T 3V Enhanced CMOS Quad Differential Line Receiver February 1997 Absolute Maximum Ratings (Note 1) Derate N Package 13.9 mW/˚C above +25˚C Storage Temperature Range 65˚C to +150˚C Lead Temperature Range Soldering (4 Seconds) +260˚C ESD Ratings (HBM, 1.5k, 100 pF) Receiver Inputs and Enables ≥6.5 kV Other Pins ≥2 kV If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) +7V Enable Input Voltage (EN) +7V Receiver Input Voltage ± 14V (VID: RI+, RI−) Receiver Input Voltage ± 14V (VCM: RI+, RI−) Receiver Output Voltage (RO) −0.5V to VCC + 0.5V ± 25 mA Receiver Output Current (RO) Maximum Package Power Dissipation +25˚C M Package 1190 mW N Package 1645 mW Derate M Package 9.8 mW/˚C above +25˚C Recommended Operating Conditions Supply Voltage (VCC) Operating Free Air Temperature (TA) Min 3.0 Typ 3.3 Max 3.6 Units V −40 +25 +85 ˚C Electrical Characteristics (Notes 2, 3) Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. Symbol VTH Parameter Differential Input Threshold Conditions VOUT = VOH or VOL −7V < VCM < +7V VHY Hysteresis VIH Minimum High Level Input Voltage VIL Minimum Low Level Input Voltage RIN Input Resistance Pin Min Typ Max Units RI+, RI− −200 ± 17.5 +200 mV VCM = 1.5V 35 mV 2.0 V EN VIN = −7V, +7V 0.8 5.0 8.5 V kΩ (Other Input = GND) IIN Input Current (Other Input = 0V, Power On or VCC = 0V) IEN VOH VIN = +10V RI+, RI− VIN = +3V VIN = 0.5V 1.1 0 0.27 1.8 mA mA −0.02 mA VIN = −3V 0 −0.43 VIN = −10V 0 −1.26 2.4 3 V VCC − 0.1 V VIN = 0V to VCC High Level Output Voltage 0 EN IOH = −6 mA, VID = +1V mA −2.2 mA ±1 µA IOH = −6 mA, VID = OPEN VOH High Level Output Voltage IOH = −100 µA, VID = +1V IOH = −100 µA, VID = OPEN VOL Low Level Output Voltage IOL = +6 mA, VID = −1V IOZ Output TRI-STATE Leakage Current VIN = VCC or GND EN = VIL ISC Output Short Circuit Current VO = 0V, VID ≥ |200 mV| 0.13 RO −10 0.5 V ± 50 µA −35 −70 mA 9 15 mA (Note 4) ICC Power Supply Current No Load, All RI+, RI− = Open, EN = VCC or GND www.national.com 2 VCC Switching Characteristics (Notes 3, 9, 10) Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. Symbol Parameter Min Typ Max Units 6 17.5 35 ns 6 17.8 35 ns Rise Time (20% to 80%) 4.1 10 ns tf Fall Time (80% to 20%) 3.3 10 ns tPHZ Disable Time CL = 50 pF 40 ns tPLZ Disable Time (Figures 3, 4) 40 ns tPZH Enable Time 40 ns tPZL Enable Time 40 ns tSK1 Skew, |tPHL − tPLH|(Note 5) 4 ns tSK2 Skew, Pin to Pin (Note 6) 0.6 4 ns tSK3 Skew, Part to Part (Note 7) 7 17 fMAX Maximum Operating Frequency tPHL Propagation Delay High to Low tPLH Propagation DeIay Low to High tr Conditions CL = 15 pF (Figures 1, 2 ) CL = 15 pF CL = 15 pF 0.3 ns 32 MHz (Note 8) Note 1: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation. Note 2: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except VID. Note 3: All typicals are given for: VCC = +3.3V, TA = +25˚C. Note 4: Short one output at a time to ground. Do not exceed package power dissipation ratings. Note 5: tSK1 is the |tPHL − tPLH| of a channel. Note 6: tSK2 is the maximum skew between any two channels within a device, on either edge. Note 7: tSK3 is the difference in propagation delay times between any channels of any devices. This specification (maximum limit) applies to devices within VCC ± 0.1V of one another,and a Delta TA = ± 5˚C (between devices) within the operating temperature range. This parameter is guaranteed by design and characterization. Note 8: All channels switching, output duty cycle criteria is 40%/60% measured at 50% Input = 1V to 2V, 50% Duty Cycle, tr/tf ≤ 5 ns. This parameter is guaranteed by design and characterization. Parameter Measurement Information DS012644-2 FIGURE 1. Receiver Propagation Delay and Transition Time Test Circuit (Notes 9, 10) DS012644-3 FIGURE 2. Receiver Propagation Delay and Transition Time Waveform (Notes 9, 10) Note 9: Generator waveform for all tests unless otherwise specified: f = 1 MHz, Duty Cycle = 50%, ZO = 50Ω, tr ≤ 10 ns, tf ≤ 10 ns. Note 10: CL includes probe and jig capacitance. 3 www.national.com Parameter Measurement Information (Continued) DS012644-4 FIGURE 3. Receiver TRI-STATE Test Circuit DS012644-5 FIGURE 4. Receiver TRI-STATE Output Enable and Disable Waveforms (Notes 9, 10) Power Decoupling Recommendations: Bypass caps must be used on power pins. High frequency ceramic (surface mount is recommended) 0.1 µF in paraIIel with 0.01 µF at the power supply pin. A 10 µF or greater solid tantalum or electrolytic should be connected at the power entry point on the printed circuit board. Typical Application Information General application guidelines and hints for differential drivers receivers may be found in the following application notes: AN-214, AN-457, AN-805, AN-847, AN-903, AN-912, AN-916 www.national.com 4 Typical Application Information (Continued) DS012644-6 RT is optional although highly recommended to reduce reflection DS012644-7 FIGURE 5. Typical Receiver Connections DS012644-8 FIGURE 6. Typical Receiver Output Waveforms DS012644-9 FIGURE 7. Typical Receiver Input Circuit 5 www.national.com Typical Application Information (Continued) DS012644-10 FIGURE 8. Typical ICC vs Frequency DS012644-11 FIGURE 9. IIN vs VIN (Power On, Power Off) DS012644-12 FIGURE 10. IOL vs VOL www.national.com 6 Typical Application Information (Continued) DS012644-13 FIGURE 11. IOH vs VOH 7 www.national.com 8 Physical Dimensions inches (millimeters) unless otherwise noted Dual-In-Line Package Order Number DS34LV86TM NS Package Number M16A Dual-In-Line Package Order Number DS34LV86TN See NS Package Number N16E 9 www.national.com DS34LV86T 3V Enhanced CMOS Quad Differential Line Receiver LIFE SUPPORT POLICY NATIONAL’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 NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. Life support devices or systems are devices or sysdevice or system whose failure to perform can be reatems which, (a) are intended for surgical implant into sonably expected to cause the failure of the life support the body, or (b) support or sustain life, and whose faildevice or system, or to affect its safety or effectiveness. ure 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. 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