SN75154 quadruple line receiver slls083b november 1970 revised may 1995 1 post office box 655303 ? dallas, texas 75265 meets or exceeds the requirements of ansi standard eia/tia-232-e and itu recommendation v.28 input resistance . . . 3 k w to 7 k w over full eia/tia-232-e voltage range input threshold adjustable to meet fail-safe requirements without using external components built-in hysteresis for increased noise immunity inverting output compatible with ttl output with active pullup for symmetrical switching speeds standard supply voltages ...5 v or 12 v description the SN75154 is a monolithic low-power schottky line receiver designed to satisfy the requirements of the standard interface between data terminal equipment and data communication equipment as defined by ansi standard eia/tia-232-e. other applications are for relatively short, single-line, point-to-point data transmission and for level translators. operation is normally from a single 5-v supply; however, a built-in option allows operation from a 12-v supply without the use of additional components. the output is compatible with most ttl circuits when either supply voltage is used. in normal operation, the threshold-control terminals are connected to the v cc1 terminal, even if power is being supplied via the alternate v cc2 terminal. this provides a wide hysteresis loop, which is the difference between the positive-going and negative-going threshold voltages. see typical characteristics. in this mode of operation, if the input voltage goes to zero, the output voltage will remain at the low or high level as determined by the previous input. for fail-safe operation, the threshold-control terminals are open. this reduces the hysteresis loop by causing the negative-going threshold voltage to be above zero. the positive-going threshold voltage remains above zero as it is unaffected by the disposition of the threshold terminals. in the fail-safe mode, if the input voltage goes to zero or an open-circuit condition, the output will go to the high level regardless of the previous input condition. the SN75154 is characterized for operation from 0 c to 70 c. copyright ? 1995, 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. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 3t 2t 1t 1a 2a 3a 4a gnd v cc2 v cc1 4t 1y 2y 3y 4y r1 2 (top view) d or n package 2 for function of r1, see schematic
SN75154 quadruple line receiver slls083b november 1970 revised may 1995 2 post office box 655303 ? dallas, texas 75265 logic symbol 2 thrs adj 4t 4a 3t 3a 2t 2a 1t 1a 10 11 12 13 4y 3y 2y 1y 14 7 1 6 2 5 3 4 2 this symbol is in accordance with ansi/ieee std 91-1984 and iec publication 617-12. logic diagram (positive logic) 14 7 1 6 2 5 3 4 4t 4a 3t 3a 2t 2a 1t 1a 10 11 12 13 4y 3y 2y 1y schematic component values shown are nominal. v cc2 3 v cc1 r1 gnd threshold input control common to four receivers 1 of 4 receivers 5 k w 3.2 k w 5.5 k w 5 k w 1.6 k w 1.6 k w 200 w 4.2 k w 2.7 k w 1 k w 240 w output 9.9 k w . . . substrate 3 when v cc1 is used, v cc2 may be left open or shorted to v cc1 . when v cc2 is used, v cc1 must be left open or connected to the threshold control pins.
SN75154 quadruple line receiver slls083b november 1970 revised may 1995 3 post office box 655303 ? dallas, texas 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) 2 normal supply voltage, v cc1 (see note 1) 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . alternate supply voltage, v cc2 14 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input voltage, v i 25 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous total power dissipation see dissipation rating table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. note 1: voltage values are with respect to network gnd terminal. dissipation rating table package t a 25 c derating factor t a = 70 c package a power rating above t a = 25 c a power rating d 950 mw 7.6 mw/ c 608 mw n 1150 mw 9.2 mw/ c 736 mw ns 625 mw 5.0 mw/ c 400 mw recommended operating conditions min nom max unit normal supply voltage, v cc1 4.5 5 5.5 v alternate supply voltage, v cc2 10.8 12 13.2 v high-level input voltage, v ih (see note 2) 3 15 v low-level input voltage, v il (see note 2) 15 3 v high-level output current, i oh 400 m a low-level output current, i ol 16 ma operating free-air temperature, t a 0 70 c note 2: the algebraic convention, where the less positive (more negative) limit is designated as minimum, is used in this data s heet for logic and threshold levels only, e.g., when 0 v is the maximum, the minimum limit is a more negative voltage.
SN75154 quadruple line receiver slls083b november 1970 revised may 1995 4 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) parameter test test conditions min typ 2 max unit parameter figure test conditions min typ 2 max unit v it positive-going input normal operation 1 0.8 2.2 3 v v it+ gg threshold voltage fail-safe operation 1 0.8 2.2 3 v v it negative-going input normal operation 1 3 1.1 0 v v it ggg threshold voltage fail-safe operation 1 0.8 1.4 3 v v h hysteresis voltage normal operation 1 0.8 3.3 6 v v hys yg (v it+ v it ) fail-safe operation 1 0 0.8 2.2 v v oh high-level output voltage 1 i oh = 400 m a 2.4 3.5 v v ol low-level output voltage 1 i ol = 16 ma 0.29 0.4 v d v i = 25 v to 14 v 3 5 7 d v i = 14 v to 3 v 3 5 7 r i input resistance 2 d v i = 3 v to 3 v 3 6 8 k w d v i = 3 v to 14 v 3 5 7 k w d v i = 14 v to 25 v 3 5 7 v i(open) open-circuit input voltage 3 i i = 0 0 0.2 2 v i os short-circuit output current 3 4 v cc1 = 5.5 v, v i = 5 v 10 20 40 ma i cc1 supply current from v cc1 5 v cc1 = 5.5 v, t a = 25 c 20 35 ma i cc2 supply current from v cc2 5 v cc2 = 13.2 v, t a = 25 c 23 40 ma 2 all typical values are at v cc1 = 5 v, t a = 25 c. 3 not more than one output should be shorted at a time. switching characteristics, v cc1 = 5 v, t a = 25 c, n = 10 parameter test test conditions min typ max unit parameter figure test conditions min typ max unit t plh propagation delay time, low- to high-level output 11 ns t phl propagation delay time, high- to low-level output 6 c l =50 p fr l = 390 w 8 ns t tlh transition time, low- to high-level output 6 c l = 50 pf , r l = 390 w 7 ns t thl transition time, high- to low-level output 2.2 ns
SN75154 quadruple line receiver slls083b november 1970 revised may 1995 5 post office box 655303 ? dallas, texas 75265 typical characteristics 4 3 2 1 0 4 3 2 1 0 1 2 3 4 25 25 v i input voltage v vo output voltage v v cc1 = 5 v t a = 25 c normal operation operation fail-safe see note a v it v it v it + v o output voltage vs input voltage note a: for normal operation, the threshold controls are connected to v cc1 . for fail-safe operation, the threshold controls are open. figure 1
SN75154 quadruple line receiver slls083b november 1970 revised may 1995 6 post office box 655303 ? dallas, texas 75265 parameter measurement information dc test circuits 2 test table test measure a t y v cc1 v cc2 o p en circuit in p ut (fail safe) v oh open open i oh 4.5 v open open - circ u it inp u t (fail safe) v oh open open i oh open 10.8 v v it min v it min (fail safe) v oh 0.8 v open i oh 5.5 v open v it + min , v it min (fail safe) v oh 0.8 v open i oh open 13.2 v v it min (normal) v oh note a v cc1 i oh 5.5 v and t open v it + min (normal) v oh note a v cc1 i oh t 13.2 v v il max v it min (normal) v oh 3 v v cc1 i oh 5.5 v and t open v il ma x, v it + min (normal) v oh 3 v v cc1 i oh t 13.2 v v ih min v it max v it max (fail safe) v ol 3 v open i ol 4.5 v open v ih min , v it+ ma x, v it ma x (fail safe) v ol 3 v open i ol open 10.8 v v ih min v it max (normal) v ol 3 v v cc1 i ol 4.5 v and t open v ih min , v it + ma x (normal) v ol 3 v v cc1 i ol t 10.8 v v it max (normal) v ol note b v cc1 i ol 5.5 v and t open v it ma x (normal) v ol note b v cc1 i ol t 13.2 v notes: a. momentarily apply 5 v, then 0.8 v. b. momentarily apply 5 v, then gnd. v ol v oh gnd open v i ,v it 5.5 v open 4.5 v t a 13.2 v open 10.8 v i ol y r1 v cc2 v cc1 i oh figure 2. v ih , v il , v it + , v it , v oh , v ol 2 arrows indicate actual direction of current flow. current into a terminal is a positive value.
v cc1 v cc2 r1 y open 12 v a t open 5 v v i open gnd i i open v i i i r i = open gnd open 5.5 v t a 13.2 v y r1 v cc2 v cc1 v i(open) SN75154 quadruple line receiver slls083b november 1970 revised may 1995 7 post office box 655303 ? dallas, texas 75265 parameter measurement information dc test circuits 2 (continued) test table t v cc1 v cc2 open 5 v open open gnd open open open open v cc1 t and 5 v open gnd gnd open open open 12 v open open gnd v cc1 t 12 v v cc1 t gnd v cc1 t open figure 3. input resistance test table t v cc1 v cc2 open 5.5 v open v cc1 5.5 v open open open 13.2 v v cc1 t 13.2 v figure 4. input voltage (open) v cc1 v cc2 r1 y 13.2 v a t 5.5 v open gnd v cc1 v cc2 r1 y a open gnd i os 5 v open 5.5 v open 5 v open i cc1 i cc2 each output is tested separately. all four line receivers are tested simultaneously. open figure 5. output short-circuit current figure 6. supply current 2 arrows indicate actual direction of current flow. current into a terminal is a positive value.
SN75154 quadruple line receiver slls083b november 1970 revised may 1995 8 post office box 655303 ? dallas, texas 75265 parameter measurement information v cc1 v cc2 r1 y a t open gnd pulse generator (see note a) output 5 v input open r l = 390 w see note c c l = 50 pf (see note b) test circuit t phl 10 2 ns 90% 3 v 10% 3 v 90% 10% 10 2 ns t plh input output t thl 2 v 1.5 v 0.8 v 0.8 v 1.5 v 2 v t tlh 5 v 0 v 5 v v oh v ol voltage waveforms notes: a. the pulse generator has the following characteristics: z o = 50 w , t w 200 ns, duty cycle 20%. b. c l includes probe and jig capacitance. c. all diodes are 1n3064. figure 6. test circuit and voltage waveforms
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
|
