SN75123 dual line driver slls086c september 1973 revised april 1998 1 post office box 655303 ? dallas, texas 75265 meets or exceeds the requirements of ibm ? system 360 input/output interface specification operate from single 5-v supply ttl compatible 3.11-v output at i oh = 59.3 ma uncommitted emitter-follower output structure for party-line operation short-circuit protection and-or logic configuration designed for use with triple line receiver sn75124 designed to be interchangeable with n8t13 and n8t23 description the SN75123 is a dual line driver specifically designed to meet the input/output interface specifications for ibm system 360. it also is compatible with standard-ttl logic and supply-voltage levels. the SN75123 low-impedance emitter-follower outputs drive terminated lines such as coaxial cable or twisted pair. having the outputs uncommitted allows wired-or logic to be performed in party-line applications. output short-circuit protection is provided by an internal clamping network that turns on when the output voltage drops below approximately 1.5 v. all the inputs are in conventional ttl configuration, and the gating can be used during power-up and power-down sequences to ensure that no noise is introduced to the line. the SN75123 is characterized for operation from 0 c to 70 c. function table inputs output a b c d e f y h h h h x x h x xxxhh h all other input combinations l h = high level, l = low level, x = irrelevant copyright ? 1998, 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. 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. ibm is a trademark of international business machines corp. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1a 1b 1c 1d 1e 1f 1y gnd v cc 2f 2e 2d 2c 2b 2a 2y d or n package (top view) the sn751730 is recommended for new ibm 360/370 interface designs.
SN75123 dual line driver slls086c september 1973 revised april 1998 2 post office box 655303 ? dallas, texas 75265 logic symbol 2 2 this symbol is in accordance with ansi/ieee std 91-1984 and iec publication 617-12. 1 1a 2 1b 3 1c 4 1d 7 & 5 1e 6 1f 10 2a 11 2b 12 2c 13 2d 14 2e 15 2f 9 1 & logic diagram (positive logic) a b c d e f y
SN75123 dual line driver slls086c september 1973 revised april 1998 3 post office box 655303 ? dallas, texas 75265 schematic (each driver) v cc to other line driver 4 k w 4 k w a b c d e f gnd 360 w 15 w y to other line driver 1, 10 2, 11 3, 12 4, 13 5, 14 6, 15 8 16 7, 9 resistor values shown are nominal. absolute maximum ratings over operating free-air temperature range (unless otherwise noted) 2 supply voltage, v cc (see note 1) 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input voltage, v i 5.5 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . output voltage, v o 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous total dissipation at (or below) 25 c free-air temperature (see note 2): d package 950 mw . . . . . n package 1150 mw . . . . operating free-air temperature range, t a 0 c to 70 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg 65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 stresses beyond those listed under aabsolute maximum ratingso may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated under arecommended operating conditi onso is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. notes: 1. all voltage values, except differential input voltage, are with respect to network ground terminal. 2. for operation above 25 c free-air temperature, derate the d package to 608 mw at 70 c at the rate of 7.6 mw/ c and the n package to 736 mw at 70 c at the rate of 9.2 mw/ c. recommended operating conditions min nom max unit supply voltage, v cc 4.75 5 5.25 v high-level input voltage, v ih 2 v low-level input voltage, v il 0.8 v high-level output current, i oh 100 ma operating free-air temperature, t a 0 70 c
SN75123 dual line driver slls086c september 1973 revised april 1998 4 post office box 655303 ? dallas, texas 75265 electrical characteristics, v cc = 4.75 v to 5.25 v, t a = 0 c to 70 c (unless otherwise noted) parameter test conditions min max unit v ik input clamp voltage v cc = 5 v, i i = 12 ma 1.5 v v i(br) input breakdown voltage v cc = 5 v, i i = 10 ma 5.5 v v oh high level out p ut voltage v cc = 5 v, v ih = 2 v, t a = 25 c 3.11 v v oh high - le v el o u tp u t v oltage cc , ih , i oh = 59.3 ma, see note 3 t a = 0 c to 70 c 2.9 v v ol low-level output voltage v il = 0.8 v, i ol = 240 m a, see note 3 0.15 v i oh high level out p ut current v cc =5v v ih =45v v oh =2v t a =25 c see note 3 100 250 ma i oh high - le v el o u tp u t c u rrent v cc = 5 v , v ih = 4 . 5 v , v oh = 2 v , t a = 25 c , see note 3 100 250 ma i o(off) off-state output current v cc = 0, v o = 3 v 40 m a i ih high-level input current v i = 4.5 v 40 m a i il low-level input current v i = 0.4 v 0.1 1.6 ma i os short-circuit output current 2 v cc = 5 v, t a = 25 c 30 ma i cch supply current, outputs high v cc = 5.25 v, all inputs at 2 v, outputs open 28 ma i ccl supply current, outputs low v cc = 5.25 v, all inputs at 0.8 v, outputs open 60 ma 2 not more than one output should be shorted at a time. note 3: the output voltage and current limits are valid for any appropriate combination of high and low inputs specified by the function table for the desired output. switching characteristics, v cc = 5 v, t a = 25 c parameter test conditions min typ max unit t plh propagation delay time, low- to high-level output r l = 50 w , c l = 15 pf, see figure 1 12 20 ns t phl propagation delay time, high- to low-level output r l = 50 w , c l = 15 pf, see figure 1 12 20 ns t plh propagation delay time, low- to high-level output r l = 50 w , c l = 100 pf, see figure 1 20 35 ns t phl propagation delay time, high- to low-level output r l = 50 w , c l = 100 pf, see figure 1 15 25 ns parameter measurement information 5 ns 0 v v oh v ol 3v 5 ns input t plh output t phl voltage waveforms test circuit output pulse generator (see note a) 3 v v cc c l (see note b) r l = 50 w 90% 90% 1.5 v 1.5 v 10% 10% 1.5 v 1.5 v notes: a. the pulse generator has the following characteristics: z o = 50 w , t w = 200 ns, duty cycle = 50%. b. c l includes probe and jig capacitance. figure 1. test circuit and voltage waveforms
SN75123 dual line driver slls086c september 1973 revised april 1998 5 post office box 655303 ? dallas, texas 75265 typical characteristics output current ma v o output voltage v output current vs output voltage i o ?????? ?????? ?????? v cc = 5 v all inputs at 2 v t a = 25 c 300 250 200 150 100 50 0 01 23 45 figure 2 application information 1/2 SN75123 95 w 95- w coaxial cable a b c d e f a b y 1/3 sn75124 95 w strobe figure 3. unbalanced line communication using SN75123 and sn75124
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. testing and other quality control techniques are utilized to the extent ti deems necessary to support this warranty. specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. certain applications using semiconductor products may involve potential risks of death, personal injury, or severe property or environmental damage (acritical applicationso). ti semiconductor products are not designed, authorized, or warranted to be suitable for use in life-support devices or systems or other critical applications. inclusion of ti products in such applications is understood to be fully at the customer's risk. in order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. ti assumes no liability for applications assistance or customer product design. ti does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of ti covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. ti's publication of information regarding any third party's products or services does not constitute ti's approval, warranty or endorsement thereof. copyright ? 1998, texas instruments incorporated
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