SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 D D D D D D D D D Supports a 9-Pin GeoPort Host Interface Standard for the Intelligent Network Port Designed to Operate up to 4-Mbit/s Full Duplex ± 5 V Supply Operation Has Driver Short-Circuit Protection Includes Failsafe Mechanism for Open Inputs Is Backward Compatible with AppleTalk and LocalTalk Combines Multiple Components into a Single Chip Solution Complements the SN75LBC772 9-Pin GeoPort Peripheral (DCE) Interface Device Uses LinBiCMOS Process Technology DW PACKAGE (TOP VIEW) DA1 VEE NC NC REN DZ2 DY2 GND DEN DA2 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 GND VCC DY1 RY3 RB3 RA2 RY2 RB1 RA1 RY1 logic diagram (positive logic) description DA1 The SN75LBC773 is a low-power LinBiCMOS device that incorporates the drivers and receivers for a 9-pin GeoPort host interface. GeoPort combines hybrid EIA/TIA-422-B and EIA/ TIA-423-B drivers and receivers to transmit data up to four-Mbit/s full duplex. GeoPort is a serial communications standard that is intended to replace the RS-232, AppleTalk, and printer ports all in one connector in addition to providing real-time data transfer capability. The SN75LBC773 provides point-to-point connections between GeoPort-compatible devices with data transmission rates up to 4-Mbit/s full duplex featuring a hot-plug capability. Applications include connection to telephone, ISDN, digital sound and imaging, fax-data modems, and other traditional serial and parallel connections. The GeoPort is backwardly compatible to both LocalTalk and AppleTalk. 1 DA2 DEN 18 1 7 10 6 DY2 DZ2 9 RY1 11 RY2 14 RY3 17 12 RA1 13 RB1 15 REN DY1 16 RA2 RB3 5 While the SN75LBC773 is powered off (VCC and VEE = 0 ), the outputs are in a high-impedance state. A logic high on the driver enable (DEN) or logic low on the receive enable (REN) terminals places the outputs of the differential driver and receivers, respectively, into a high-impedance state. All drivers and receivers have fail-safe mechanisms that ensure a high output state when the inputs are left open. The SN75LBC773 is characterized for operation over the 0°C to 70°C temperature range. 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. GeoPort, LocalTalk, and AppleTalk are trademarks of Apple Computer, Incorporated. LinBiCMOS is a trademark of Texas Instruments Incorporated. Copyright 1997, 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 SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 FUNCTION TABLES† SINGLE-ENDED DRIVER DIFFERENTIAL DRIVER OUTPUT INPUT (DA1) OUTPUT (DY1) INPUT (DA2) ENABLE (DEN) (DY2) (DZ2) H L H L H L L H L L L H OPEN L OPEN L H L X H Z Z X OPEN Z Z SINGLED-ENDED RECEIVER INPUT (RA2, RA3) ENABLE (REN) H H DIFFERENTIAL RECEIVER OUTPUT (RY2) (RY3) INPUT (RA1) (RB1) ENABLE (REN) OUTPUT (RY1) H H L H L H L H L H L H H L OPEN H H H OPEN H H SHORT‡ H ? ? SHORT‡ H ? X L Z Z X X L Z X OPEN Z Z X X OPEN Z † H = high level, L = low level, X = irrelevant, ? = indeterminate, Z = high impedance (off) ‡ –0.2 V < VID < 0.2 V absolute maximum ratings over operating free-air temperature range (unless otherwise noted)§ Positive supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 to 7 V Negative supply voltage range, VEE (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 7 to 0.5 V Receiver input voltage range (RA, RB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 15 V to 15 V Receiver differential input voltage range, VID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 12 V to 12 V Receiver output voltage range (RY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 5.5 V Driver output voltage range (Power Off) (DY1, DY2, DZ2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 15 V to 15 V Driver output voltage range (Power On) (DY1, DY2, DZ2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 11 V to 11 V Driver input voltage range (DA, REN, DEN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to VCC +0.4 V Electrostatic Discharge (All pins) Human Body Model (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 kV Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°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 are with respect to network ground terminal unless otherwise noted. 2. This rating is per MIL-PRF-38535, Method 3015.7. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING DW 1125 mW 9.0 mW/°C 720 mW recommended operating conditions Positive supply voltage, VCC Negative supply voltage, VEE High-level input voltage, VIH (DA, REN, DEN) Low-level input voltage, VIL (DA, REN, DEN) MIN NOM MAX UNIT 4.75 5 5.25 V – 5.25 –5 – 4.75 V 2 Receiver common-mode input voltage, VIC Receiver differential input voltage, VID Operating free-air temperature, TA V 0.8 V –7 7 V –12 12 V 0 70 °C driver electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VOH High level output voltage High-level VOL Low level output voltage Low-level |VOD| Magnitude of differential output voltage |VDY – VDZ| ∆|VOD| Change in differential voltage magnitude VOC Common-mode output voltage |∆VOC(SS)| Magnitude of change, common-mode steady-state output voltage |∆VOC(PP)| Magnitude of change, common-mode peak-to-peak output voltage Single-ended, g , See Figure 1 ICC IEE Positive supply current ICC IEE Positive supply current IOZ High-impedance output current IOS Negative supply current Negative supply current Short-circuit output current MIN TYP RL= 12 kΩ 3.6 4.5 MAX UNIT V RL= 120 Ω 2 3.6 V RL= 12 kΩ – 4.5 –3.6 V RL = 120 Ω –3.6 –2 V RL = 120 Ω,, g See Figure 2 4 V 250 –2 2 200 See Figure 3 700 REN = 5 V,, No Load DEN = 0 V, 4 –2 REN = 0 V,, No Load DEN = 5 V, VCC = 0 or 5 V, VCC = 5.25 V, See Note 3 –10 ≤ VO ≤ 10 V –5 V ≤ VO ≤ 5 V, ±170 mV V mV mV 10 mA –5 mA 100 µA – 100 µA ±100 µA ± 450 mA NOTE 3: Not more than one output should be shorted at one time. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 driver switching characteristics over operating free-air temperature range TYP MAX tPHL tPLH Propagation delay time, high-to-low level output PARAMETER 42 75 ns Propagation delay time, low-to-high level output 41 75 ns tPZL tPZH Driver output enable time to low-level output 25 100 ns Driver output enable time to high-level output 25 100 ns tPLZ tPHZ Driver output disable time from low-level output 28 100 ns 37 100 ns tr tf Rise time 10 25 75 ns Fall time 10 23 75 ns tPHL tPLH Propagation delay time, high-to-low level output 40 75 ns Propagation delay time, low-to-high level output 42 75 ns tPZL tPZH Driver output enable time to low-level output 29 150 ns Driver output enable time to high-level output 35 150 ns tPLZ tPHZ Driver output disable time from low-level output 34 100 ns 34 100 ns tr tf Rise time 10 27 75 ns Fall time 10 26 75 ns tSK(p) Pulse skew, |tPLH – tPHL| 22 ns 4 TEST CONDITIONS DEN MIN Single g ended,, See Figure 4 Driver output disable time from high-level output DEN Differential,, See Figure 5 Driver output disable time from high-level output POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 receiver electrical characteristics over recommended operating conditions (unless otherwise noted) PARAMETER TEST CONDITIONS VIT+ VIT– Positive-going input threshold voltage Vhys Differential input voltage hysteresis (VIT+ – VIT–) See Figure 6 Negative-going input threshold voltage MIN TYP MAX UNIT 200 mV –200 VOH High-level output voltage (see Note 4) VIC = 0, See Figure 6 VOL Low-level output voltage VIC = 0, See Figure 6 IOS Short circuit output current Short-circuit VO = 0 VO = 5.25 V RIN Input resistance VCC = 0 or 5.25 V, IOH = –2 mA, IOL = 2 mA, –12 V ≤ VI ≤ 12 V 2 6 mV 50 mV 4.5 V 0.4 0.8 V – 45 – 85 mA 45 85 mA 30 kΩ NOTE 4: If the inputs are left unconnected, receivers one and two interpret this as a high-level input and receiver three interprets this as a low-level input so that all outputs are at the high level. receiver switching characteristics over recommended conditions (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 30 75 ns 30 75 ns 15 30 ns 15 30 ns 20 ns tPHL tPLH Propagation delay time, high-to-low level output tr tf Rise time tSK(P) tPZL Pulse skew |tPLH-tPHL| Receiver output enable time to low-level output 35 100 ns tPZH Receiver output enable time to high-level output 35 100 ns tPLZ Receiver output disable time from low-level output 20 100 ns tPHZ Receiver output disable time from high-level output 20 100 ns 12 25 µs 12 25 µs 25 100 ns 125 400 ns tPZL tPZH RL = 2 kΩ,, See Figure 6 Propagation delay time, low-to-high level output CL = 15 pF,, Fall time Differential pF CL = 50 pF, Receiver output enable time to low-level output Receiver output enable time to high-level output tPLZ Receiver output disable time from low-level output tPHZ Receiver output disable time from high-level output Single-ended POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 See Figure 7 5 SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 PARAMETER MEASUREMENT INFORMATION CL IO CL II IO DY1 II DA1 VO CL DA2 RL VI RL DY2 VO VI IO DZ2 RL VO DEN NOTE A: CL = 50 pF Figure 1. Single-Ended Driver DC Parameter Test Circuits 60 Ω DY2 II IO VOD DA2 VI 60 Ω DZ2 50 pF DEN Figure 2. Differential Driver DC Parameter Test Circuit 60 Ω DY2 DA2 VOD VI 60 Ω DZ2 VOC 15 pF DEN TEST CIRCUIT 3V VI 1.5 v 1.5 v 0V VOC 0V V VOC(PP) OC(SS) VOLTAGE WAVEFORM NOTE A: Measured 3dB Bandwidth = 300 MHz Figure 3. Differential Driver Common-Mode Output Voltage Test Circuit 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 PARAMETER MEASUREMENT INFORMATION CL IO CL = 50 pF II DY1 DA1 RL DY2 VO CL DA2 RL = 120 Ω VO VI IO DZ2 RL VO DEN TEST CIRCUIT (see Note A) 3V 1.5 V DEN 1.5 V 1.5 V 1.5 V 0V 3V 1.5 V DA 1.5 V 0V tPLH tPHL tPLZ tPZL 90% DY1, DZ2 10% tPHZ 90% 90% 50% 10% 10% 90% 0V 50% 10% VOL tPZH tf tPLZ tr tPHL tPHZ tPLH VOH tPZH DY2 90% 90% tPZL 90% 50% 10% 10% VOH 90% 50% 10% 0V 10% VOL tf tr VOLTAGE WAVEFORM (see Note B) NOTES: A. CL = 50 pF, RL = 120 Ω B. The input waveform tr, tf ≤ 10 ns. Figure 4. Single-Ended Driver Propagation and Transition Times Test Circuits and Waveform POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 PARAMETER MEASUREMENT INFORMATION RL = 60 Ω DY2 VOD DA2 VI RL = 60 Ω DZ2 50 pF DEN TEST CIRCUIT 3V DEN 1.5 V 1.5 V 1.5 V 1.5 V 0V 3V 1.5 V DA 1.5 V 0V tPHL tPLH tPHZ tPZH 90% VOD 90% VOD(H) 90% 50% 90% tPLZ 10% 50% 10% 0V 10% 10% tPZL VOD(L) tf tr VOLTAGE WAVEFORM (see Note A) NOTE A: For the input waveform tr, tf < = 10 ns Figure 5. Differential Driver Propagation and Transition Times Test Circuit and Waveforms VCC II Input VI 2.5 V VI 2 kΩ RA + RB _ RY 15 pF 0V 0V – 2.5 V IO tPLH Output VO REN VO tPHL 90% 90% 10% tr VOH 1.5 V 10% V OL tf VCC TEST CIRCUIT VOLTAGE WAVEFORM (see Note A) NOTE A: For the input waveform tr, tf < = 10 ns Figure 6. Receiver Propagation and Transition Times Test Circuit and Waveform 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 PARAMETER MEASUREMENT INFORMATION VCC RA + RB _ – 2.5 V or 2.5 V RL = 500 Ω RY S1 CL = 50 pF REN TEST CIRCUIT 3V REN 1.5 V 1.5 V 0V tPLZ tPZL VCC S1 at VCC 90% 10% VO tPHZ VOL tPZH VOH 90% S1 at GND 10% 0V VOLTAGE WAVEFORM (see Note A) NOTE A: For the input waveform tr, tf < = 10 ns Figure 7. Receiver Enable and Disable Test Circuit and Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 APPLICATION INFORMATION RxD TxD REN GeoPort Controller and USART† DTR RTXC CTS RTS VCC 11 10 13 RxD – 12 RxD + 7 6 TxD + 1 RESET/ATT 14 SCLK 17 TxHS/WAKE-UP 9 18 15 RESET/ATT SCLK 16 TxHS/WAKE-UP Power 13 RxD – 12 RxD + 16 TxHS/WAKE-UP 7 TxD + 6 TxD – 6 3 GND 8 20 GeoPort Peripheral Device 9-Pin DCE TxD – GND 5 Standard Host 19 SN75LBC773 9-Pin DTE 2 VEE GeoPort Host SN75LBC773 9-Pin DTE 18 RESET/ATT 15 SCLK 7 VCC 8 4 9 1 2 5 Power † USART = universal synchronous asynchronous receiver transmitter Figure 8. GeoPort 9-Pin DTE Connection Application generator characteristics PARAMETER TEST CONDITIONS 232/V.28 MIN Open circuit |VO| Output voltage magnitude IOS R(OFF) Short-circuit output current IO(OFF) SR 3 kΩ ≤ RL ≤ 7 kΩ RL = 450 Ω Power-off source resistance |VO| < 2 V 300 Power-off output current VCC = 0, |VO| < 6 V NA Output transition time 25 4 6 15 NA 3.7 3.6 NA ±100 NA ±3 V to ±3 V 10% to 90% POST OFFICE BOX 655303 0.04 MAX 13.2 UNIT V V V 60 mA 300 Ω NA µA NA 4 30 V/µs NA 0.22 2.1 NA NA µs ui‡ ui‡ NA 0.3 NA 10% • DALLAS, TEXAS 75265 MIN 150 NA 30 VO(RING) Output voltage ring ‡ ui is the unit interval and is the inverse of the signaling rate (bit time). 10 MAX 100 Output voltage slew rate 562 MIN NA VO = 0 VCC = 0, ±3.3 V to ±3.3 V tt 5 423/V.10 MAX NA 5% SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 APPLICATION INFORMATION receiver characteristics PARAMETER |VI| TEST CONDITIONS 232/V.28 MIN Input voltage VIT Input voltage threshold RI Input resistance 423/V.10 MAX MIN 25 |VI| < 15 V –3 |VI| < 10 V NA 3 V < |VI| < 15 V |VI| < 10 V POST OFFICE BOX 655303 3 NA • DALLAS, TEXAS 75265 3 MIN 10 NA – 0.2 7 562 MAX –3 0.2 MAX 25 V 3 V NA NA 3 4 NA UNIT V 7 kΩ kΩ 11 SN75LBC773 GEOPORT TRANSCEIVER SLLS247C – FEBRUARY 1997 – NOVEMBER 1997 MECHANICAL INFORMATION DW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 16 PIN SHOWN PINS ** 0.050 (1,27) 16 20 24 28 A MAX 0.410 (10,41) 0.510 (12,95) 0.610 (15,49) 0.710 (18,03) A MIN 0.400 (10,16) 0.500 (12,70) 0.600 (15,24) 0.700 (17,78) DIM 0.020 (0,51) 0.014 (0,35) 16 0.010 (0,25) M 9 0.419 (10,65) 0.400 (10,15) 0.299 (7,59) 0.293 (7,45) 0.010 (0,25) NOM Gage Plane 0.010 (0,25) 1 8 0°– 8° A 0.050 (1,27) 0.016 (0,40) Seating Plane 0.104 (2,65) MAX 0.012 (0,30) 0.004 (0,10) 0.004 (0,10) 4040000 / B 03/95 NOTES: A. B. C. D. 12 All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0.006 (0,15). Falls within JEDEC MS-013 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. 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