TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 D D D D D D D D D D D D D D D D D D OR P PACKAGE (TOP VIEW) Bidirectional Transceiver Meets or Exceeds the Requirements of TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendation V.11 High-Speed Advanced Low-Power Schottky Circuitry Low Skew . . . 6 ns Max Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments Low Supply-Current Requirements . . . 30 mA Max Wide Positive and Negative Input/Output Bus-Voltage Ranges Driver Output Capacity . . . ± 60 mA Thermal-Shutdown Protection Driver Positive and Negative Current Limiting Receiver Input Impedances . . . 12 kΩ Min Receiver Input Sensitivity . . . ± 200 mV Max Receiver Input Hysteresis . . . 120 mV Typ Fail Safe . . . High Receiver Output With Inputs Open Operates From a Single 5-V Supply Glitch-Free Power-Up and Power-Down Protection Interchangeable With National DS3695 and DS3695A R RE DE D 1 8 2 7 3 6 4 5 VCC B A GND description The TL3695 differential bus transceiver is designed for bidirectional data communication on multipoint bus-transmission lines. It is designed for balanced transmission lines and meets TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendation V.11. The TL3695 combines a 3-state differential line driver and a differential input line receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, which can be externally connected together to function as a directional control. The driver differential outputs and the receiver differential inputs are connected internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus when the driver is disabled or VCC = 0. This port features wide positive and negative common-mode voltage ranges, making the device suitable for party line applications. The TL3695 is characterized for operation from 0°C to 70°C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 AVAILABLE OPTIONS PACKAGED DEVICES TA SMALL OUTLINE (D) PLASTIC DIP (P) 0°C to 70°C TL3695D TL3695P The D package is available taped and reeled. Add the suffix R to device type (e.g., TL3695DR). Function Tables DRIVER OUTPUTS INPUT D ENABLE DE H H H L L H L H X L Z Z A B H = high level, L = low level, ? = indeterminate, X = irrelevant, Z = high impedance (off) RECEIVER DIFFERENTIAL INPUTS A–B ENABLE RE OUTPUT R VID ≥ 0.2 V – 0.2 V < VID < 0.2 V L H L ? VID ≤ – 0.2 V X L L H Z Inputs open L H H = high level, L = low level, ? = indeterminate, X = irrelevant, Z = high impedance (off) logic symbol† DE RE D 3 2 logic diagram (positive logic) EN1 DE EN2 4 1 1 R 1 6 7 D A B RE R 2 3 4 2 6 1 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 A Bus B TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 schematic of inputs and outputs EQUIVALENT OF EACH INPUT TYPICAL OF A AND B I/O PORTS VCC VCC R(eq) TYPICAL OF RECEIVER OUTPUT VCC 85 Ω NOM 180 kΩ NOM Connected on A Port Input A or B 3 kΩ NOM 18 kΩ NOM Driver Input: R(eq) = 3 kΩ NOM Enable Inputs: R(eq) = 8 kΩ NOM R(eq) = equivalent resistor 180 kΩ NOM Connected on B Port Output 1.1 kΩ NOM absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Voltage range at any bus terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 10 V to 15 V Enable input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C † 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. NOTES: 1. All voltage values, except differential I/O bus voltage, are with respect to network ground terminal. 2. The package thermal impedance is calculated in accordance with JESD 51. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 recommended operating conditions Supply voltage, VCC MIN NOM MAX UNIT 4.75 5 5.25 V 12 Voltage at any bus terminal (separately or common mode), mode) VI or VIC –7 High-level Input voltage, VIH D, DE, and RE Low-level Input voltage, VIL D, DE, and RE 2 Differential input voltage, VID (see Note 3) Driver High level output current, High-level current IOH Receiver Driver Low level output current Low-level current, IOL V 0.8 V ± 12 V – 60 mA – 400 µA 60 Receiver Operating free-air temperature, TA 8 0 70 NOTE 3: Differential input/output bus voltage is measured at the noninverting terminal A with respect to the inverting terminal B. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 V mA °C TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 DRIVER SECTION electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) TEST CONDITIONS† PARAMETER VIK VO Input clamp voltage Output voltage II = – 18 mA IO = 0 |VOD1| Differential output voltage IO = 0 |VOD2| Differential output voltage VOD3 Differential output voltage ∆ |VOD| Change in magnitude of differential output voltage¶ VOC Common-mode output voltage ∆ |VOC| Change in magnitude of common-mode output voltage¶ IO Output current IIH IIL High-level input current IOS ICC MIN MAX UNIT – 1.5 V 0 6 V 1.5 5 V RL = 100 Ω, Ω See Figure 1 1/2 VOD1 or 2§ RL = 54 Ω, See Figure 1 1.5 Vtest = – 7 V to 12 V, See Figure 2 1.5 RL = 54 Ω, TYP‡ V 2.5 See Figure 1 Output disabled,, See Note 4 VO = 12 V VO = – 7 V Short circuit output current# Short-circuit Supply current V 5 V ± 0.2 V 3 V ± 0.2 V 1 – 0.8 VI = 2.4 V VI = 0.4 V Low-level input current 5 20 µA – 200 µA VO = – 6 V VO = 0 – 250 VO = VCC VO = 8 V 250 No load mA – 150 mA 250 Outputs enabled 23 50 Outputs disabled 19 35 mA † The power-off measurement in TIA/EIA-422-B applies to disabled outputs only and is not applied to combined inputs and outputs. ‡ All typical values are at VCC = 5 V and TA = 25°C. § The minimum VOD2 with a 100-Ω load is either 1/2 VOD1 or 2 V, whichever is greater. ¶ ∆ |VOD| and ∆ |VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low level. # Duration of the short circuit should not exceed one second for this test. NOTE 4: This applies for power on and power off. Refer to TIA/EIA-485-A for exact conditions. The TIA/EIA-422-B limit does not apply for a combined driver and receiver terminal. switching characteristics over recommended ranges of supply voltage and operating free-air temperature PARAMETER td(OD) TEST CONDITIONS MIN Differential-output delay time Skew (|td(ODH) – td(ODL)|) CL1 = CL2 = 100 pF, RL = 60 Ω, See Figure 3 TYP‡ MAX 8 22 ns 1 8 ns 8 18 ns UNIT tt(OD) tPZH Differential output transition time Output enable time to high level CL = 100 pF, RL = 500 Ω, See Figure 4 50 ns tPZL tPHZ Output enable time to low level CL = 100 pF, RL = 500 Ω, See Figure 5 50 ns Output disable time from high level CL = 15 pF, RL = 500 Ω, See Figure 4 8 30 ns tPLZ Output disable time from low level CL = 15 pF, ‡ All typical values are at VCC = 5 V and TA = 25°C. RL = 500 Ω, See Figure 5 8 30 ns POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 SYMBOL EQUIVALENTS DATA-SHEET PARAMETER TIA/EIA-422-B TIA/EIA-485-A VO |VOD1| Voa, Vob Vo Voa, Vob Vo |VOD2| Vt (RL = 100 Ω) |VOD3| Vt (RL = 54 Ω) Vt (test termination measurement 2) Vtest ∆ |VOD| | |Vt| – |Vt| | Vtst | |Vt| – |Vt| | VOC ∆ |VOC| |Vos| | Vos – Vos | |Vos| | Vos – Vos | IOS IO | Isa |, | Isb | | Ixa |, | Ixb | Iia, Iib RECEIVER SECTION electrical characteristics over recommended ranges of common-mode input voltage, supply voltage, and operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIT+ VIT– Positive-going input threshold voltage Vhys VIK Hysteresis voltage (VIT+– VIT–) Negative-going input threshold voltage Enable-input clamp voltage VO = 2.7 V, VO = 0.5 V, IO = – 0.4 mA IO = 8 mA – 0.2‡ VOL Low level output voltage Low-level VID = – 200 mV,, See Figure 6 IOZ High-impedance-state output current VO = 0.4 V to 2.4 V Other input = 0,, See Note 5 IIH IIL High-level enable-input current rI Input resistance IOS Short-circuit output current§ VO = 0 ICC Supply current No load UNIT V V mV – 1.5 High level output voltage High-level Line input current MAX 70 VOH II TYP† 0.2 VOC = 0 II = – 18 mA VID = 200 mV or inputs open,, IOH = – 400 µA, See Figure 6 Low-level enable-input current MIN 24 2.4 V V IOL = 16 mA IOL = 8 mA 0.5 0.45 ± 20 VI = 12 V VI = – 7 V 1 – 0.8 VIH = 2.7 V VIL = 0.4 V V µA mA 20 µA – 100 µA – 85 mA 12 kΩ – 15 Outputs enabled 23 50 Outputs disabled 19 35 mA † All typical values are at VCC = 5 V and TA = 25°C. ‡ The algebraic convention, in which the less positive (more negative) limit is designated minimum, is used in this data sheet for common-mode input voltage and threshold voltage levels only. § Duration of the short circuit should not exceed one second for this test. NOTE 5: This applies for power on and power off. Refer to TIA/EIA-485-A for exact conditions. 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 switching characteristics over recommended ranges of supply voltage and operating free-air temperature range, CL = 15 pF PARAMETER TEST CONDITIONS tPLH tPHL Propagation delay time, low- to high-level output tPZH tPZL Output enable time to high level MIN TYP† MAX 14 37 ns 14 37 ns 7 20 ns 7 20 ns 7 16 ns 8 16 ns VID = – 1.5 V to 1.5 V,, See Figure 7 Propagation delay time, high- to low-level output See Figure 8 Output enable time to low level tPHZ Output disable time from high level tPLZ Output disable time from low level † All typical values are at VCC = 5 V and TA = 25°C. See Figure 8 UNIT PARAMETER MEASUREMENT INFORMATION R L 2 VOD2 R L 2 VOC Figure 1. Driver VOD and VOC 375 Ω VOD3 60 Ω Vtest 375 Ω Figure 2. Driver VOD3 3V Input CL1 = 100 pF (see Note A) Generator (see Note B) 0V Output td(ODH) RL = 60 Ω 50 Ω CL 2 = 100 pF (see Note A) 1.5 V 1.5 V 50% Output 3V td(ODL) 90% 10% tt(OD) TEST CIRCUIT ≈2.5 V 50% ≈ – 2.5 V tt(OD) VOLTAGE WAVEFORMS NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 6 ns, tf ≤ 6 ns, ZO = 50 Ω. Figure 3. Driver Differential-Output Test Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 PARAMETER MEASUREMENT INFORMATION S1 0 V to 3 V Generator (see Note B) Output 50 Ω 3V Input 1.5 V 0V RL = 500 Ω CL (see Note A) 1.5 V 0.5 V tPZH VOH 2.3 V Output Voff ≈0 V tPHZ TEST CIRCUIT VOLTAGE WAVEFORMS NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns, ZO = 50 Ω. Figure 4. Driver Test Circuit and Voltage Waveforms 5V RL = 500 Ω S1 3V Input Output 1.5 V 1.5 V 0V 3 V or 0 V tPZL Generator (see Note B) 50 Ω tPLZ CL (see Note A) 2.3 V Output VOL VOLTAGE WAVEFORMS TEST CIRCUIT NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns, ZO = 50 Ω.. Figure 5. Driver Test Circuit and Voltage Waveforms 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5V 0.5 V TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 PARAMETER MEASUREMENT INFORMATION VID VOH – IOH + IOL VOL Figure 6. Receiver VOH and VOL 5V 1 kΩ 2.5 V Output Generator (see Note B) Input 0V 0V – 2.5 V 51 Ω CL = 15 pF (see Note A) 1 kΩ 1N916 or Equivalent tPHL tPLH VOH Output 1.5 V 0V 1.5 V VOL TEST CIRCUIT VOLTAGE WAVEFORMS NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns, ZO = 50 Ω. Figure 7. Receiver Test Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 PARAMETER MEASUREMENT INFORMATION 5V S2 2 kΩ S1 1.5 V Output – 1.5 V CL = 15 pF (see Note A) Generator (see Note B) 1N916 or Equivalent 1 kΩ 50 Ω S3 TEST CIRCUIT 3V Input 1.5 V 0V S1 to 1.5 V S2 Open S3 Closed 3V S1 to – 1.5 V 1.5 V S2 Closed S3 Open 0V Input tPZL tPZH VOH ≈ 4.5 V Output 1.5 V Output 1.5 V VOL 0V 3V Input 1.5 V 0V S1 to 1.5 V S2 Open S3 Closed 3V Input 0V 0.5 V S1 to – 1.5 V S2 Closed S3 Open tPLZ tPHZ Output 1.5 V ≈ 1.3 V VOH Output 0.5 V ≈ 1.3 V VOL VOLTAGE WAVEFORMS NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR ≤ 1 MHz, 50% duty cycle, tr ≤ 10 ns, tf ≤ 10 ns, ZO = 50 Ω. Figure 8. Receiver Test Circuit and Voltage Waveforms 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 TYPICAL CHARACTERISTICS† DRIVER DRIVER HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 5 5 VCC = 5 V TA = 25°C VCC = 5 V TA = 25°C 4.5 VOL VOL– Low-Level Output Voltage – V VV0H OH – High-Level Output Voltage – V 4.5 4 3.5 3 2.5 2 1.5 1 4 3.5 3 2.5 2 1.5 1 0.5 0.5 0 0 0 – 20 – 40 – 60 – 80 – 100 0 – 120 20 40 60 80 100 120 IOL – Low-Level Output Current – mA IOH – High-Level Output Current – mA Figure 9 Figure 10 DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs OUTPUT CURRENT VOD VOD – Differential Output Voltage – V 4 VCC = 5 V TA = 25°C 3.5 3 2.5 2 1.5 1 0.5 0 0 10 20 30 40 50 60 70 80 90 100 IO – Output Current – mA Figure 11 † Operation of the device at these or any other conditions beyond those indicated under ‘‘recommended operating conditions” is not implied. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11 TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 TYPICAL CHARACTERISTICS† RECEIVER RECEIVER HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 5 VCC = 5 V VID = 200 mV IOH = – 440 µA VID = 0.2 V TA = 25°C VV0H OH – High-Level Output Voltage – V VV0H OH – High-Level Output Voltage – V 5 4 3 VCC = 5.25 V 2 VCC = 5 V VCC = 4.75 V 1 0 0 – 10 – 20 – 30 – 40 4 3 2 1 0 – 40 – 20 – 50 0 20 40 60 80 100 TA – Free-Air Temperature – °C IOH – High-Level Output Current – mA Figure 12 Figure 13 RECEIVER RECEIVER LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE 0.6 0.6 VCC = 5 V TA = 25°C 0.5 VOL VOL – Low-Level Output Voltage – V VOL VOL – Low-Level Output Voltage – V 120 0.4 0.3 0.2 0.1 0 0 5 10 15 20 25 30 0.5 VCC = 5 V VID = – 200 mV IOL = 8 mA 0.4 0.3 0.2 0.1 0 – 40 – 20 IOL – Low-Level Output Current – mA Figure 14 0 20 40 60 80 100 TA – Free-Air Temperature – °C 120 Figure 15 † Operation of the device at these or any other conditions beyond those indicated under ‘‘recommended operating conditions” is not implied. 12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL3695 DIFFERENTIAL BUS TRANSCEIVER SLLS044D – NOVEMBER 1988 – REVISED DECEMBER 1999 TYPICAL CHARACTERISTICS† RECEIVER RECEIVER OUTPUT VOLTAGE vs ENABLE VOLTAGE 5 VCC = 4.75 V VCC = 5 V 2 1 VCC = 5.25 V VID = – 0.2 V Load = 1 kΩ to VCC TA = 25°C 5 VV) O – Output Voltage – V VV) O – Output Voltage – V 3 6 VID = 0.2 V Load = 8 kΩ to GND TA = 25°C VCC = 5.25 V 4 OUTPUT VOLTAGE vs ENABLE VOLTAGE VCC = 4.75 V 4 VCC = 5 V 3 2 1 0 0 0.5 1 1.5 2 2.5 0 3 VI – Enable Voltage – V 1.5 2 1 VI – Enable Voltage – V Figure 16 Figure 17 0 0.5 2.5 3 † Operation of the device at these or any other conditions beyond those indicated under ‘‘recommended operating conditions” is not implied. APPLICATION INFORMATION TL3695 TL3695 RT RT Up to 32 Transceivers NOTE A: The line should be terminated at both ends in its characteristic impedance (RT = ZO). Stub lengths off the main line should be kept as short as possible. Figure 18. Typical Application Circuit POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 13 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. 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