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full-duplex, low power, slew rate limited, eia rs-485 transceivers adm488/adm489 rev. d information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2006 analog devices, inc. all rights reserved. features meets eia rs-485 and rs-422 standards 250 kbps data rate single 5 v 10% supply ?7 v to +12 v bus common-mode range 12 k input impedance 2 kv eft protection meets iec1000-4-4 high em immunity meets iec1000-4-3 reduced slew rate for low em interference short-circuit protection excellent noise immunity 30 a supply current applications low power rs-485 and rs-422 systems dte-dce interface packet switching local area networks data concentration data multiplexers integrated services digital network (isdn) general description the adm488 and adm489 are low power, differential line transceivers suitable for communication on multipoint bus transmission lines. they are intended for balanced data transmission and comply with both electronics industries association (eia) rs-485 and rs-422 standards. both products contain a single differential line driver and a single differential line receiver, making them suitable for full-duplex data transfer. the adm489 contains an additional receiver and driver enable control. the input impedance is 12 k, allowing 32 transceivers to be connected on the bus. the adm488/adm489 operate from a single 5 v 10% power supply. excessive power dissipation caused by bus contention or output shorting is prevented by a thermal shutdown circuit. this feature forces the driver output into a high impedance state if, during fault conditions, a significant temperature increase is detected in the internal driver circuitry. functional block diagrams adm488 r d ro di a b z y 00079-001 figure 1. adm489 r d ro di a b z y de re 00079-002 figure 2. the receiver contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating). the adm488/adm489 are fabricated on bicmos, an advanced mixed technology process combining low power cmos with fast switching bipolar technology. the adm488/adm489 are fully specified over the industrial temperature range and are available in pdip, soic, and tssop packages.
adm488/adm489 rev. d | page 2 of 16 table of contents features .............................................................................................. 1 applications....................................................................................... 1 general description ......................................................................... 1 functional block diagrams............................................................. 1 specifications..................................................................................... 3 timing specifications .................................................................. 4 absolute maximum ratings............................................................ 5 esd caution.................................................................................. 5 pin configurations and function descriptions ........................... 6 test circuits................................................................................... 7 switching characteristics ............................................................ 8 typical performance characteristics ............................................. 9 theory of operation ...................................................................... 11 eft transient protection scheme ........................................... 11 fast transient burst immunity (iec1000-4-4)...................... 11 radiated immunity (iec1000-4-3) ......................................... 12 emi emissions............................................................................ 13 conducted emissions ................................................................ 13 application information................................................................ 14 differential data transmission ................................................ 14 cable and data rate................................................................... 14 outline dimensions ....................................................................... 15 ordering guide .......................................................................... 16 revision history 4 /06rev. c to rev. d updated outline dimensions ....................................................... 15 changes to ordering guide .......................................................... 16 11/04rev. b to rev. c updated format..................................................................universal changes to receiving truth table inputs data section ............ 11 renamed general information to theory of operation........... 12 updated outline dimensions ....................................................... 15 changes to ordering guide .......................................................... 16 5/01rev. a to rev. b changes to absolute maximum ratings section......................... 3 3/01rev. 0 to rev. a changes to esd specification, absolute maximum ratings...... 3 6/97revision 0: initial version
adm488/adm489 rev. d | page 3 of 16 specifications v cc = 5 v 10%. all specifications t min to t max , unless otherwise noted. table 1. parameter min typ max unit test conditions/comments driver differential output voltage, v od 5.0 v r = , see figure 6 2.0 5.0 v v cc = 5 v, r = 50 (rs-422), see figure 6 1.5 5.0 v r = 27 (rs-485), see figure 6 1.5 5.0 v v tst = C7 v to +12 v, see figure 7 , v cc = 5 v 5% |v od | for complementary output states 0.2 v r = 27 or 50 , see figure 6 common-mode output voltage, v oc 3 v r = 27 or 50 , see figure 6 |v oc | for complementary output states 0.2 v r = 27 or 50 output short-circuit current (v out = high) 250 ma ?7 v v o +12 v output short-circuit current (v out = low) 250 ma ?7 v v o +12 v cmos input logic threshold low, v inl 1.4 0.8 v cmos input logic threshold high, v inh 2.0 1.4 v logic input current (de, di) 1.0 a receiver differential input threshold voltage, v th ?0.2 +0.2 v ?7 v v cm +12 v input voltage hysteresis, v th 70 mv v cm = 0 v input resistance 12 k ?7 v v cm +12 v input current (a, b) 1 ma v in = 12 v ?0.8 ma v in = C7 v logic enable input current ( re ) 1 a cmos output voltage low, v ol 0.4 v i out = +4.0 ma cmos output voltage high, v oh 4.0 v i out = ?4.0 ma short-circuit output current 7 85 ma v out = gnd or v cc three-state output leakage current 1.0 a 0.4 v v out +2.4 v power supply current outputs unloaded, receivers enabled i cc 30 60 a de = 0 v (disabled) 37 74 a de = 5 v (enabled)
adm488/adm489 rev. d | page 4 of 16 timing specifications v cc = 5 v 10%. all specifications t min to t max , unless otherwise noted. table 2. parameter min typ max unit test conditions/comments driver propagation delay input to output, t plh , t phl 250 2000 ns r l differential = 54 , c l1 = c l2 = 100 pf, see figure 10 driver o/p to op , t skew 100 800 ns r l differential = 54 , c l1 = c l2 = 100 pf, see figure 10 driver rise/fall time, t r , t f 250 2000 ns r l differential = 54 , c l1 = c l2 = 100 pf, see figure 10 driver enable to output valid 250 2000 ns r l = 500 , c l = 100 pf, see figure 7 driver disable timing 300 3000 ns r l = 500 , c l = 15 pf, see figure 7 data rate 250 kbps receiver propagation delay input to output, t plh , t phl 250 2000 ns c l = 15 pf, see figure 10 skew |t plh ? t phl | 100 ns receiver enable, t en1 10 50 ns r l = 1 k, c l = 15 pf, see figure 9 receiver disable, t en2 10 50 ns r l = 1 k, c l = 15 pf, see figure 9 data rate 250 kbps
adm488/adm489 rev. d | page 5 of 16 absolute maximum ratings t a = 25c, unless otherwise noted. table 3. parameter rating v cc 7 v inputs driver input (di) ?0.3 v to v cc + 0.3 v control inputs (de, re ) ?0.3 v to v cc + 0.3 v receiver inputs (a, b) ?14 v to +14 v outputs driver outputs ?14 v to +12.5 v receiver output ?0.5 v to v cc + 0.5 v power dissipation 8-lead pdip 700 mw ja , thermal impedance 120c/w power dissipation 8-lead soic 520 mw ja , thermal impedance 110c/w power dissipation 14-lead pdip 800 mw ja , thermal impedance 140c/w power dissipation 14-lead soic 800 mw ja , thermal impedance 120c/w power dissipation 16-lead tssop 800 mw ja , thermal impedance 150c/w operating temperature range industrial (a version) ?40c to +85c storage temperature range ?65c to +150c lead temperature (soldering, 10 sec) 300c vapor phase (60 sec) 215c infrared (15 sec) 220c esd association s5.1 hbm standard 3 kv eft rating, iec1000-4-4 2 kv stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. esd caution esd (electrostatic discharge) sensitive device. electros tatic charges as high as 4000 v readily accumulate on the human body and test equipment and can discharge wi thout detection. although this product features proprietary esd protection circuitry, permanent dama ge may occur on devices subjected to high energy electrostatic discharges. therefore, proper esd pr ecautions are recommended to avoid performance degradation or loss of functionality.
adm488/adm489 rev. d | page 6 of 16 pin configurations and function descriptions v cc 1 ro 2 di 3 gnd 4 a 8 b 7 z 6 y 5 adm488 top view (not to scale) 00079-003 figure 3. adm488 8-lead pdip/soic pin configuration table 4. adm488 pin function descriptions pin no. mnemonic description 1 v cc power supply, 5 v 10%. 2 ro receiver output. when a > b by 200 mv, ro = high. if a < b by 200 mv, ro = low. 3 di driver input. a logic low on di forces y low and z high, while a logic high on di forces y high and z low. 4 gnd ground connection, 0 v. 5 y noninverting driver, output y. 6 z inverting driver, output z. 7 b inverting receiver, input b. 8 a noninverting receiver, input a. nc 1 ro 2 re 3 de 4 v cc 14 nc 13 a 12 b 11 di 5 gnd 6 gnd 7 z 10 y 9 nc 8 nc = no connect adm489 top view (not to scale) 00079-004 figure 4. adm489 14-lead pdip/soic pin configuration 1 2 3 4 5 6 7 8 nc = no connect 16 15 14 13 12 11 10 9 nc ro re gnd di de v cc a b nc nc gnd nc y z nc adm489 top view (not to scale) 00079-005 figure 5. adm489 16-lead tssop pin configuration table 5. adm489 pin function descriptions pdip/soic pin no. tssop pin no. mnemonic description 1, 8, 13 2, 9, 10, 13, 16 nc no connect. no connections are required to this pin. 2 3 ro receiver output. when enabled, if a > b by 200 mv then ro = high. if a < b by 200 mv then ro = low. 3 4 re receiver output enable. a low level enables the receiver output, ro. a high level places it in a high impedance state. 4 5 de driver output enable. a high level enables the dr iver differential outputs, y and z. a low level places it in a high impedance state. 5 6 di driver input. when the driver is enabled, a logic low on di forces y low and z high, while a logic high on di forces y high and z low. 6, 7 7, 8 gnd ground connection, 0 v. 9 11 y noninverting driver, output y. 10 12 z inverting driver, output z. 11 14 b inverting receiver, input b. 12 15 a noninverting receiver, input a. 14 1 v cc power supply, 5 v 10%.
adm488/adm489 rev. d | page 7 of 16 test circuits v oc r r v od 00079-019 figure 6. driver voltage measurement test circuit v tst 60 ? 375 ? 375 ? v od3 0 0079-020 figure 7. driver enable/disable test circuit r l s1 s2 v cc a b 0 v or 3v de in de c l v out 00079-021 figure 8. driver voltage measurement test circuit 2 re re in ?1.5v +1.5v s1 r l s2 v cc c l v out 0 0079-022 figure 9. receiver enable/disable test circuit rl diff c l1 c l2 d r ro a b di 3 v de y z re 0 0079-023 figure 10. driver/receiver propagation delay test circuit
adm488/adm489 rev. d | page 8 of 16 switching characteristics ?vo vo 1/2vo 0v 3 v 1.5v 1.5v t plh t skew +vo 0v 90% point 10% point 90% point 10% point t phl b a t skew t r t f 00079-006 figure 11. driver propagation delay, rise/fall timing t plh t phl 0v 0v 1.5v 1.5v a?b ro v ol v oh a?b 00079-007 figure 12. receiver propagation delay t zh 1.5v de 1.5v 3 v 0v 2.3v t hz v oh 0v a, b t zl 2.3v t lz v ol a, b v ol +0.5v v oh ?0.5v 00079-008 figure 13. driver enable/disable timing 1.5v 1.5v 3 v 0v 1.5v 0v r 1.5v r o/p low o/p high re v ol +0.5v v oh ?0.5v v ol v oh t zl t zh t lz t hz 00079-009 figure 14. receiver enable/disable timing
adm488/adm489 rev. d | page 9 of 16 typical performance characteristics 40 35 0 1.0 1.5 20 15 10 5 30 25 output voltage (v) output current (ma) 0 0.5 2.0 2.5 00079-010 figure 15. output current vs. receiver output low voltage 3.4 3.6 5.0 3.8 4.0 4.2 4.4 4.6 4.8 output voltage (v) output current (ma) ?20 ?10 ?5 0 ?15 0 0079-011 figure 16. output current vs. receiver output high voltage 0.5 1.0 1.5 2.0 2.5 90 80 0 40 30 20 10 70 50 60 output voltage (v) output current (ma) 03 . 0 00079-012 figure 17. output current vs . driver output low voltage 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 0 ?10 ?90 ?50 ?60 ?70 ?80 ?20 ?40 ?30 output voltage (v) output current (ma) 05 00079-013 . 0 figure 18. output current vs. driver output high voltage 80 0 70 40 30 20 10 60 50 output voltage (v) output current (ma) 00.5 4.5 1.0 1.5 2.0 3.0 3.5 4.0 2.5 00079-014 figure 19. output current vs. driver differential output voltage 10 0% 100 90 t t t ro di 00079-015 figure 20. driving 4000 ft. of cable
adm488/adm489 rev. d | page 10 of 16 10 0% 100 90 10db/di v 500khz/div 05 m h z 0 0079-016 figure 21. driver output waveform and fft plot transmitting at 150 khz 80 70 60 50 40 30 20 10 0 frequency (mhz) db (v) 30 200 limit 00079-017 figure 22. radiated emissions 0.3 0.6 16 1 0 3 0 80 0 70 40 30 20 10 60 50 limit log frequency (0.15?30) (mhz) db (v) 3 00079-018 figure 23. conducted emissions
adm488/adm489 rev. d | page 11 of 16 theory of operation the adm488/adm489 are ruggedized rs-485 transceivers that operate from a single 5 v supply. they contain protection against radiated and conducted interference and are ideally suited for operation in electrically harsh environments or where cables can be plugged/unplugged. they are also immune to high rf field strengths without special shielding precautions. they are intended for balanced data transmission and comply with both eia rs-485 and rs-422 standards. they contain a differential line driver and a differential line receiver, and are suitable for full-duplex data transmission. the input impedance on the adm488/adm489 is 12 k, allowing up to 32 transceivers on the differential bus. the adm488/adm489 operate from a single 5 v 10% power supply. a thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. this feature forces the driver output into a high impedance state if, during fault conditions, a significant temperature increase is detected in the internal driver circuitry. the receiver contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating). a high level of robustness is achieved using internal protection circuitry, eliminating the need for external protection com- ponents such as tranzorbs or surge suppressors. furthermore, low electromagnetic emissions are achieved using slew limited drivers, minimizing interference both conducted and radiated. the adm488/adm489 can transmit at data rates up to 250 kbps. a typical application for the adm488/adm489 is illustrated in figure 24 showing a full-duplex link where data is transferred at rates of up to 250 kbps. a terminating resistor is shown at both ends of the link. this termination is not critical because the slew rate is controlled by the adm488/adm489 and reflections are minimized. adm488 d ro di a b z y de 5 v 0.1f rs-485/rs-422 link r r adm489 5 v 0.1f d ro di de gnd gnd v cc v cc a b z y re re 00079-024 figure 24. adm488/adm489 full-duplex data link the communications network can be extended to include multipoint connections, as shown in figure 30 . as many as 32 transceivers can be connected to the bus. table 6 and table 7 show the truth tables for transmitting and receiving. table 6. transmitting truth table inputs outputs re de di z y x 1 1 1 0 1 x 1 1 0 1 0 0 0 x 1 hi-z hi-z 1 0 x 1 hi-z hi-z 1 x = dont care. table 7. receiving truth table inputs output re de a to b ro 0 0 +0.2 v 1 0 0 ?0.2 v 0 0 0 inputs o/c 1 1 0 x 1 hi-z 1 x = dont care. eft transient protection scheme the adm488/adm489 use protective clamping structures on their inputs and outputs that clamp the voltage to a safe level and dissipate the energy present in esd (electrostatic) and eft (electrical fast transients) discharges. fast transient burst immunity (iec1000-4-4) iec1000-4-4 (previously 801-4) covers electrical fast transient burst (eft) immunity. electrical fast transients occur as a result of arcing contacts in switches and relays. the tests simulate the interference generated when, for example, a power relay disconnects an inductive load. a spark is generated due to the well known back emf effect. in fact, the spark consists of a burst of sparks as the relay contacts separate. the voltage appearing on the line, therefore, consists of a burst of extremely fast transient impulses. a similar effect occurs when switching on fluorescent lights. the fast transient burst test, defined in iec1000-4-4, simulates this arcing, and its waveform is illustrated in figure 25 . it consists of a burst of 2.5 khz to 5 khz transients repeating at 300 ms intervals. it is specified for both power and data lines. four severity levels are defined in terms of an open-circuit voltage as a function of installation environment. the installation environments are defined as ? wel l prote c te d ? protected ? typical industrial ? severe industrial
adm488/adm489 rev. d | page 12 of 16 300ms 16ms v t v 0.2/0.4ms t 5ns 50ns 00079-025 figure 25. iec1000-4-4 fast transient waveform table 8 shows the peak voltages for each of the environments. table 8. peak voltages level v peak (kv) psu v peak (kv) i/o 1 0.5 0.25 2 1 0.5 3 2 1 4 4 2 a simplified circuit diagram of the actual eft generator is shown in figure 26 . these transients are coupled onto the signal lines using an eft coupling clamp. the clamp is 1 m long and completely sur- rounds the cable, providing maximum coupling capacitance (50 pf to 200 pf typical) between the clamp and the cable. high energy transients are capacitively coupled onto the signal lines. fast rise times (5 ns), as specified by the standard, result in very effective coupling. this test is very severe because high voltages are coupled onto the signal lines. the repetitive transients often cause problems, while single pulses do not. destructive latch-up can be induced due to the high energy content of the transients. note that this stress is applied while the interface products are powered up and transmitting data. the eft test applies hun- dreds of pulses with higher energy than esd. worst-case transient current on an i/o line can be as high as 40 a. r c c c z s l r m c d high voltage source 50? output 00079-026 figure 26. eft generator test results are classified according to the following: x normal performance within specification limits. x temporary degradation or loss of performance that is self- recoverable. x temporary degradation or loss of function or performance that requires operator intervention or system reset. x degradation or loss of function that is not recoverable due to damage. the adm488/adm489 have been tested under worst-case conditions using unshielded cables, and meet classification 2 at severity level 4. data transmission during the transient condition is corrupted, but it can be resumed immediately following the eft event without user intervention. radiated immunity (iec1000-4-3) iec1000-4-3 (previously iec801-3) describes the measurement method and defines the levels of immunity to radiated electro- magnetic fields. it was originally intended to simulate the electromagnetic fields generated by portable radio transceivers or any other device that generates continuous wave-radiated electromagnetic energy. its scope has been broadened to include spurious em energy, which can be radiated from fluorescent lights, thyristor drives, inductive loads, and so on. testing for immunity involves irradiating the device with an em field. test methods include the use of anechoic chamber, stripline cell, tem cell, and gtem cell. these consist of two parallel plates with an electric field developed between them. the device under test is placed between the plates and exposed to the electric field. the three severity levels have field strengths ranging from 1 v/m to 10 v/m. results are classified as follows: x normal operation. x temporary degradation or loss of function that is self- recoverable when the interfering signal is removed. x temporary degradation or loss of function that requires operator intervention or system reset when the interfering signal is removed. x degradation or loss of function that is not recoverable due to damage.
adm488/adm489 rev. d | page 13 of 16 the adm488/adm489 comfortably meet classification 1 at the most stringent (level 3) requirement. in fact, field strengths up to 30 v/m showed no performance degradation, and error- free data transmission continued even during irradiation. table 9. field strengths level v/m field strength 1 1 2 3 3 10 emi emissions the adm488/adm489 contain internal slew rate limiting to minimize the level of electromagnetic interference generated. figure 27 shows an fft plot when transmitting a 150 khz data stream. 10 0% 100 90 10db/div 500khz/div 05 m h z 00079-027 figure 27. driver output waveform and fft plot transmitting at 150 khz the slew limiting attenuates the high frequency components. emi is, therefore, reduced, as are reflections due to improperly terminated cables. en55022, cispr22 defines the permitted limits of radiated and conducted interference from information technology equipment (ite). the objective is to control the level of both conducted and radiated emissions. for ease of measurement and analysis, conducted emissions are assumed to predominate below 30 mhz, while radiated emissions predominate above this frequency. conducted emissions conducted emissions are a measure of noise that is conducted onto the main power supply. the noise is measured using a lisn (line impedance stabilizing network) and a spectrum analyzer. the test setup is shown in figure 28 . the spectrum analyzer is set to scan the spectrum from 0 mhz to 30 mhz. figure 29 shows that the level of conducted emissions from the adm488/adm489 is well below the maximum allowable limits. dut lisn psu spectrum analyzer 00079-028 figure 28. conducted emissions test setup log frequency (0.15?30) (mhz) 0.3 0.6 1 36 10 30 80 0 70 40 30 20 10 60 50 limit db (v) 00079-029 figure 29. conducted emissions
adm488/adm489 rev. d | page 14 of 16 application information differential data transmission differential data transmission is used to reliably transmit data at high rates over long distances and through noisy environments. differential transmission nullifies the effects of ground shifts and noise signals, which appear as common-mode voltages on the line. two main standards that specify the electrical characteristics of transceivers used in differential data transmission are approved by the eia. the rs-422 standard specifies data rates up to 10 mbaud and line lengths up to 4000 ft. a single driver can drive a transmis- sion line with up to 10 receivers. to cater to true multipoint communications, the rs-485 stan- dard was defined to meet or exceed the requirements of rs-422. it also allows up to 32 drivers and 32 receivers to be connected to a single bus. an extended common-mode range of ?7 v to +12 v is defined. the most significant difference between the rs-422 and rs-485 is that the rs-485 drivers can be disabled, thereby allowing up to 32 receivers to be connected to a single line. only one driver should be enabled at a time, but the rs- 485 standard contains additional specifications to guarantee device safety in the event of line contention. cable and data rate the transmission line of choice for rs-485 communications is a twisted pair. twisted-pair cable tends to cancel common-mode noise and also causes cancellation of the magnetic fields gener- ated by the current flowing through each wire, thereby reducing the effective inductance of the pair. the adm488/adm489 are designed for bidirectional data communications on multipoint transmission lines. a typical application showing a multipoint transmission network is illustrated in figure 30 . an rs-485 transmission line can have up to 32 transceivers on the bus. only one driver can transmit at a particular time, but multiple receivers can be simultane- ously enabled. as with any transmission line, it is important that reflections be minimized. this can be achieved by terminating the extreme ends of the line using resistors equal to the characteristic im- pedance of the line. stub lengths of the main line should also be kept as short as possible. a properly terminated transmission line appears purely resistive to the driver. table 10. comparison of rs-422 and rs-485 interface standards specification rs-422 rs-485 transmission type differential differential maximum data rate 10 mb/s 10 mb/s maximum cable length 4000 ft. 4000 ft. minimum driver output voltage 2 v 1.5 v driver load impedance 100 54 receiver input resistance 4 k minimum 12 k minimum receiver input sensitivity 200 mv 200 mv receiver input voltage range ?7 v to +7 v ?7 v to +12 v number of drivers/receivers per line 1/10 32/32 d r d r d r rt rt d r 00079-030 figure 30. typical rs-485 network
adm488/adm489 rev. d | page 15 of 16 outline dimensions compliant to jedec standards ms-001-ba 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) seating plane 0.015 (0.38) min 0.210 (5.33) max pin 1 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) 0.070 (1.78) 0.060 (1.52) 0.045 (1.14) 8 1 4 5 0.280 (7.11) 0.250 (6.35) 0.240 (6.10) 0.100 (2.54) bsc 0.400 (10.16) 0.365 (9.27) 0.355 (9.02) 0.060 (1.52) max 0.430 (10.92) max 0.014 (0.36) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.195 (4.95) 0.130 (3.30) 0.115 (2.92) 0.015 (0.38) gauge plane 0.005 (0.13) min controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design. corner leads may be configured as whole or half leads. figure 31. 8-lead plastic dual in-line package [pdip] narrow body (n-8) dimensions shown in inches and (millimeters) 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 1.75 (0.0688) 1.35 (0.0532) seating plane 0.25 (0.0098) 0.10 (0.0040) 4 1 85 5.00 (0.1968) 4.80 (0.1890) 4.00 (0.1574) 3.80 (0.1497) 1.27 (0.0500) bsc 6.20 (0.2440) 5.80 (0.2284) 0.51 (0.0201) 0.31 (0.0122) coplanarity 0.10 controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design. compliant to jedec standards ms-012-aa figure 32. 8-lead standard small outline package [soic_n] narrow body (r-8) dimensions show in millimeters and (inches) compliant to jedec standards ms-001-aa controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design. corner leads may be configured as whole or half leads. 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.070 (1.78) 0.050 (1.27) 0.045 (1.14) 14 1 7 8 0.100 (2.54) bsc 0.775 (19.69) 0.750 (19.05) 0.735 (18.67) pin 1 0.060 (1.52) max 0.430 (10.92) max 0.014 (0.36) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.015 (0.38) gauge plane 0.210 (5.33) max seating plane 0.015 (0.38) min 0.005 (0.13) min 0.280 (7.11) 0.250 (6.35) 0.240 (6.10) 0.195 (4.95) 0.130 (3.30) 0.115 (2.92) figure 33. 14-lead plastic dual in-line package [pdip] narrow body (n-14) dimensions shown in inches and (millimeters) controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design. compliant to jedec standards ms-012-ab coplanarity 0.10 14 8 7 1 6.20 (0.2441) 5.80 (0.2283) 4.00 (0.1575) 3.80 (0.1496) 8.75 (0.3445) 8.55 (0.3366) 1.27 (0.0500) bsc seating plane 0.25 (0.0098) 0.10 (0.0039) 0.51 (0.0201) 0.31 (0.0122) 1.75 (0.0689) 1.35 (0.0531) 8 0 0.50 (0.0197) 0.25 (0.0098) 1.27 (0.0500) 0.40 (0.0157) 0.25 (0.0098) 0.17 (0.0067) 45 figure 34. 14-lead standard small outline package [soic_n] narrow body (r-14) dimensions shown in millimeters and (inches)
adm488/adm489 rev. d | page 16 of 16 16 9 8 1 pin 1 seating plane 8 0 4.50 4.40 4.30 6.40 bsc 5.10 5.00 4.90 0.65 bsc 0.15 0.05 1.20 max 0.20 0.09 0.75 0.60 0.45 0.30 0.19 coplanarity 0.10 compliant to jedec standards mo-153-ab figure 35. 16-lead thin shrink small outline package [tssop] (ru-16) dimensions shown in millimeters ordering guide model temperature range package description package option adm488an ?40c to +85c 8-lead plastic dual in-line package [pdip] n-8 adm488anz 1 ?40c to +85c 8-lead plastic dual in-line package [pdip] n-8 adm488ar ?40c to +85c 8-lead standard small outline package [soic_n] r-8 ADM488AR-REEL ?40c to +85c 8-lead stan dard small outline package [soic_n] r-8 ADM488AR-REEL7 ?40c to +85c 8-lead stan dard small outline package [soic_n] r-8 adm488arz 1 ?40c to +85c 8-lead standard small outline package [soic_n] r-8 adm488arz-reel 1 ?40c to +85c 8-lead standard small outline package [soic_n] r-8 adm488arz-reel7 1 ?40c to +85c 8-lead standard small outline package [soic_n] r-8 adm489an ?40c to +85c 14-lead plastic dual in-line package [pdip] n-14 adm489anz 1 ?40c to +85c 14-lead plastic dual in-line package [pdip] n-14 adm489ar ?40c to +85c 14-lead standard small outline package [soic_n] r-14 adm489ar-reel ?40c to +85c 14-lead stan dard small outline package [soic_n] r-14 adm489ar-reel7 ?40c to +85c 14-lead stan dard small outline package [soic_n] r-14 adm489arz 1 ?40c to +85c 14-lead standard small outline package [soic_n] r-14 adm489arz-reel 1 ?40c to +85c 14-lead standard small outline package [soic_n] r-14 adm489arz-reel7 1 ?40c to +85c 14-lead standard small outline package [soic_n] r-14 adm489aru ?40c to +85c 16-lead thin shrink small outline package [tssop] ru-16 adm489aru-reel ?40c to +85c 16-lead thin shrink small outline package [tssop] ru-16 adm489aru-reel7 ?40c to +85c 16-lead thin shrink small outline package [tssop] ru-16 adm489aruz 1 ?40c to +85c 16-lead thin shrink small outline package [tssop] ru-16 adm489aruz-reel 1 ?40c to +85c 16-lead thin shrink small outline package [tssop] ru-16 adm489aruz-reel7 1 ?40c to +85c 16-lead thin shrink small outline package [tssop] ru-16 1 z = pb-free part. ?2006 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. c00079-0- 4 /06(d)

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