ADM3491AR-1

3.3 V, Full-Duplex, 840 μA, 20 Mbps, EIA RS-485 Transceiver ADM3491-1 Data Sheet FUNCTIONAL BLOCK DIAGRAM Operates with 3.3 V supply EIA RS-422 and RS-485 compliant over full CM range 19 kΩ input impedance Up to 50 transceivers on bus 20 Mbps data rate Short-circuit protection Specified over full temperature range Thermal shutdown Interoperable with 5 V logic 840 μA supply current 2 nA shutdown current Available in PDIP, SOIC, and TSSOP Meets IEC1000-4-4 (>1 kV) 8 ns skew Upgrade for MAX3491, SN75ALS180 ADM3491-1 A RO R B RE DE Z DI D Y 05234-001 FEATURES Figure 1. APPLICATIONS Telecommunications DTE–DCE interface Packet switching Local area networks Data concentration Data multiplexers Integrated services digital network (ISDN) AppleTalk Industrial controls GENERAL DESCRIPTION The ADM3491-1 is a low power, differential line transceiver designed to operate using a single 3.3 V power supply. Low power consumption, coupled with a shutdown mode, makes it ideal for power-sensitive applications. It is suitable for communication on multipoint bus transmission lines. The ADM3491-1 is intended for balanced data transmission and complies with both Electronic Industries Association (EIA) Standards RS-485 and RS-422. It contains a differential line driver and a differential line receiver, making it suitable for fullduplex data transfer. Rev. C The input impedance is 19 kΩ, allowing up to 50 transceivers to be connected on the bus. 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 a significant temperature increase is detected in the internal driver circuitry during fault conditions. If the inputs are unconnected (floating), the receiver contains a fail-safe feature that results in a logic high output state. The ADM3491-1 is fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with fast switching bipolar technology. Document Feedback 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 ©1998–2014 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADM3491-1* PRODUCT PAGE QUICK LINKS Last Content Update: 02/23/2017 COMPARABLE PARTS DESIGN RESOURCES View a parametric search of comparable parts. • ADM3491-1 Material Declaration • PCN-PDN Information DOCUMENTATION • Quality And Reliability Application Notes • Symbols and Footprints • AN-960: RS-485/RS-422 Circuit Implementation Guide Data Sheet DISCUSSIONS • ADM3491-1: 3.3 V, Full-Duplex, 840 μA, 20 Mbps, EIA RS-485 Transceiver Data Sheet View all ADM3491-1 EngineerZone Discussions. SOFTWARE AND SYSTEMS REQUIREMENTS SAMPLE AND BUY Visit the product page to see pricing options. • RS-232 Transceivers Cross Reference Guide REFERENCE MATERIALS TECHNICAL SUPPORT Solutions Bulletins & Brochures Submit a technical question or find your regional support number. • Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4 DOCUMENT FEEDBACK • Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3 Submit feedback for this data sheet. This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified. ADM3491-1 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1  Typical Performance Characteristics ..............................................7  Applications ....................................................................................... 1  Test Circuits ........................................................................................9  General Description ......................................................................... 1  Switching Characteristics .............................................................. 10  Functional Block Diagram .............................................................. 1  Theory of Operation ...................................................................... 11  Revision History ............................................................................... 2  Differential Data Transmission ................................................ 11  Specifications..................................................................................... 3  Cable and Data Rate ................................................................... 11  Timing Specifications .................................................................. 4  Receiver Open-Circuit Fail-Safe Feature ................................ 11  Absolute Maximum Ratings............................................................ 5  Outline Dimensions ....................................................................... 12  ESD Caution .................................................................................. 5  Ordering Guide .......................................................................... 13  Pin Configurations and Function Descriptions ........................... 6  REVISION HISTORY 6/14—Rev. B to Rev. C 11/04—Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 13 Format Updated .................................................................. Universal Changes to Specifications Section ...................................................3 Changes to Ordering Guide .......................................................... 13 10/06—Rev. A to Rev. B Changes to Part Number ................................................... Universal Updated Format .................................................................. Universal Changes to Features.......................................................................... 1 Changes to General Description .................................................... 1 Changes to Table 2 ............................................................................ 4 Changes to Table 3 ............................................................................ 4 Changes to Figure 24 and Figure 25 ............................................. 10 Changes to Table 8 .......................................................................... 11 Updated Outline Dimensions ....................................................... 12 Changes to Ordering Guide .......................................................... 13 1/98—Revision 0: Initial Version Rev. C | Page 2 of 16 Data Sheet ADM3491-1 SPECIFICATIONS VCC = 3.3 V ± 0.3 V. All specifications TMIN to TMAX, unless otherwise noted. Table 1. Parameter DRIVER Differential Output Voltage, VOD ∆|VOD| for Complementary Output States Common-Mode Output Voltage, VOC ∆|VOC| for Complementary Output States CMOS Input Logic Threshold Low, VINL CMOS Input Logic Threshold High, VINH Logic Input Current (DE, DI, RE) Output Leakage (Y, Z) Current Output Short-Circuit Current RECEIVER Differential Input Threshold Voltage, VTH Input Voltage Hysteresis, ∆VTH Input Resistance Input Current (A, B) Logic Enable Input Current (RE) Output Voltage Low, VOL Output Voltage High, VOH Short-Circuit Output Current Three-State Output Leakage Current POWER SUPPLY CURRENT ICC Supply Current in Shutdown Min Typ Max Unit Test Conditions/Comments V V V V V V V V μA μA mA RL = 100 Ω, VCC > 3.1 V, see Figure 14 RL = 54 Ω, see Figure 14 RL = 60 Ω, −7 V < VTST < +12 V, see Figure 15 R = 54 Ω or 100 Ω, see Figure 14 R = 54 Ω or 100 Ω, see Figure 14 R = 54 Ω or 100 Ω, see Figure 14 −7 V < VCM < +12 V VCM = 0 V −7 V < VCM < +12 V VIN = 12 V VIN = −7 V ±60 ±1.0 V mV kΩ mA mA μA V V mA μA IOUT = +2.5 mA IOUT = −1.5 mA VOUT = GND or VCC VCC = 3.6 V, 0 V < VOUT < VCC 1.5 1.5 1 mA mA μA Outputs unloaded DE = VCC, RE = 0 V DE = 0 V, RE = 0 V DE = 0 V, RE = VCC 2.0 1.5 1.5 0.2 3 0.2 0.8 2.0 ±1.0 ±3 ±250 −0.2 12 +0.2 50 19 1 −0.8 ±1 0.4 VCC − 0.4 V 0.84 0.84 0.002 Rev. C | Page 3 of 16 VO = −7 V or +12 V, VCC = 0 V or 3.6 V VO = −7 V or +12 V ADM3491-1 Data Sheet TIMING SPECIFICATIONS VCC = 3.3 V, TA = 25°C, unless otherwise noted. Table 2. Parameter DRIVER Differential Output Delay, TDD Differential Output Transition Time Propagation Delay Input to Output, TPLH, TPHL Driver Output to Output, TSKEW ENABLE/DISABLE Driver Enable to Output Valid Driver Disable Timing Driver Enable from Shutdown RECEIVER Time to Shutdown Propagation Delay Input to Output, TPLH, TPHL Skew, TPLH – TPHL Receiver Enable, TEN Receiver Disable, TDEN Receiver Enable from Shutdown Min Typ Max Unit Test Conditions/ Comments 1 1 7 8 22 35 15 35 8 ns ns ns ns RL = 60 Ω, CL1 = CL2 = 15 pF, see Figure 18 RL = 60 Ω, CL1 = CL2 = 15 pF, see Figure 18 RL = 27 Ω, CL1 = CL2 = 15 pF, see Figure 19 RL = 54 Ω, CL1 = CL2 = 15 pF, see Figure 19 45 40 65 90 80 110 ns ns ns RL = 110 Ω, CL = 50 pF, see Figure 16 RL = 110 Ω, CL = 50 pF, see Figure 16 RL = 110 Ω, CL = 15 pF, see Figure 16 190 65 300 90 10 50 45 500 ns ns ns ns ns ns CL = 15 pF, see Figure 21 CL = 15 pF, see Figure 21 CL = 15 pF, see Figure 17 CL = 15 pF, see Figure 17 CL = 15 pF, see Figure 17 80 25 25 25 VCC = 3.3 V ± 0.3 V, TA = TMIN to TMAX, unless otherwise noted. Table 3. Parameter DRIVER Differential Output Delay, TDD Differential Output Transition Time Propagation Delay Input to Output, TPLH, TPHL Driver Output to Output, TSKEW ENABLE/DISABLE Driver Enable to Output Valid Driver Disable Timing Driver Enable from Shutdown RECEIVER Time to Shutdown Propagation Delay Input to Output, TPLH, TPHL Skew, TPLH – TPHL Receiver Enable, TEN Receiver Disable, TDEN Receiver Enable from Shutdown Min Typ Max Unit Test Conditions/Comments 1 2 7 8 22 70 15 70 10 ns ns ns ns RL = 60 Ω, CL1 = CL2 = 15 pF, see Figure 18 RL = 60 Ω, CL1 = CL2 = 15 pF, see Figure 18 RL = 27 Ω, CL1 = CL2 = 15 pF, see Figure 19 RL = 54 Ω, CL1 = CL2 = 15 pF, see Figure 19 45 40 65 110 110 110 ns ns ns RL = 110 Ω, CL = 50 pF, see Figure 16 RL = 110 Ω, CL = 50 pF, see Figure 16 RL = 110 Ω, CL = 15 pF, see Figure 16 190 65 500 115 20 50 50 600 ns ns ns ns ns ns CL = 15 pF, see Figure 21 CL = 15 pF, see Figure 21 CL = 15 pF, see Figure 17 CL = 15 pF, see Figure 17 CL = 15 pF, see Figure 17 50 25 25 25 Rev. C | Page 4 of 16 Data Sheet ADM3491-1 ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 4. Parameter VCC Inputs Driver Input (DI) Control Inputs (DE, RE) Receiver Inputs (A, B) Outputs Driver Outputs Receiver Output 14-Lead PDIP, Power Dissipation θJA, Thermal Impedance 14-Lead SOIC, Power Dissipation θJA, Thermal Impedance 16-Lead TSSOP, Power Dissipation θJA, Thermal Impedance Operating Temperature Range Industrial (A Version) Storage Temperature Range Lead Temperature (Soldering, 10 sec) Vapor Phase (60 sec) Infrared (15 sec) ESD Rating EFT Rating (IEC1000-4-4) Rating 7V −0.3 V to VCC + 0.3 V −0.3 V to VCC + 0.3 V −7.5 V to +12.5 V −7.5 V to +12.5 V −0.5 V to VCC + 0.5 V 800 mW 140°C/W 650 mW 115°C/W 500 mW 158°C/W 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 −40°C to +85°C −65°C to +150°C 300°C 215°C 220°C >2 kV >1 kV Rev. C | Page 5 of 16 ADM3491-1 Data Sheet VCC 1 16 NC NC 2 15 A ADM3491-1 14 B TOP VIEW (Not to Scale) 13 NC 12 Z Y NC 1 14 VCC RO 3 RO 2 13 VCC RE 4 DE 5 DI 6 11 NC 7 10 NC GND 8 9 NC RE 3 ADM3491-1 12 A DE 4 TOP VIEW (Not to Scale) 11 B 10 Z GND 6 9 GND 7 8 Y NC NC = NO CONNECT 05234-002 DI 5 NC = NO CONNECT Figure 2. 14-Lead PDIP and 14-Lead SOIC Pin Configuration 05234-003 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Figure 3. 16-Lead TSSOP Pin Configuration Table 5. Pin Function Descriptions Pin Number PDIP/SOIC TSSOP 1, 8 2, 7, 9, 10, 13, 16 Mnemonic NC Description No Connect. 2 3 3 4 RO Receiver Output. High when A > B by 200 mV; low when A < B by 200 mV. RE 4 5 DE Receiver Output Enable. When RE is low, the receiver output RO is enabled. When RE is high, the output is high impedance. If RE is high and DE is low, the ADM3491-1 enters a shutdown state. Driver Output Enable. A high level enables the driver differential outputs, Y and Z. A low level places the part 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; a logic high on DI forces Y high and Z low. 6, 7 9 10 11 12 13, 14 8 11 12 14 15 1 GND Y Z B A VCC Ground Connection, 0 V. Noninverting Driver Output Y. Inverting Driver Output Z. Inverting Receiver Input B. Noninverting Receiver Input A. Power Supply, 3.3 V ± 0.3 V. Rev. C | Page 6 of 16 Data Sheet ADM3491-1 14 14 12 12 OUTPUT CURRENT (mA) 10 8 6 4 0 0 0.5 1 1.5 2 2.5 3 8 6 4 2 05234-016 2 10 0 3.5 05234-019 OUTPUT CURRENT (mA) TYPICAL PERFORMANCE CHARACTERISTICS 0 0.5 1.5 2 2.5 3 3.5 4 Figure 7. Output Current vs. Receiver Output High Voltage Figure 4. Output Current vs. Receiver Output Low Voltage 3.3 0.8 0.7 3.25 0.6 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 1 OUTPUT HIGH VOLTAGE (V) OUTPUT VOLTAGE (V) 0.5 IRO = 2.5mA 0.4 0.3 3.2 IRO = –1.5mA 3.15 3.1 0.2 05234-017 0 –40 –20 0 20 40 60 80 3 –40 100 05234-020 3.05 0.1 –20 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) Figure 8. Receiver Output High Voltage vs. Temperature Figure 5. Receiver Output Low Voltage vs. Temperature 2.6 120 2.5 OUTPUT VOLTAGE (V) 2.4 80 60 40 2.2 2.1 2.0 1.9 0 0.5 1 1.5 2 DIFFERENTIAL O/P VOLTAGE (V) 2.5 3 05234-021 0 2.3 1.8 20 05234-018 OUTPUT CURRENT (mA) 100 1.7 1.6 –40 –20 0 20 40 60 80 TEMPERATURE (°C) Figure 9. Driver Differential Output Voltage vs. Temperature Figure 6. Output Current vs. Driver Differential Output Voltage Rev. C | Page 7 of 16 100 ADM3491-1 Data Sheet 1.2 [ ] 100FT CAT 5 CABLE T 1.1 3 T 1 T 0.9 1 2 0.7 –40 –20 0 20 40 60 80 T 4 100 CH1 1.00V CH3 2.00V TEMPERATURE (C) Figure 10. Supply Current vs. Temperature [ T 05234-024 05234-022 0.8 CH2 1.00V CH4 2.00V M40.0ns CH3 640mV Figure 12. Driving 100 ft. Cable H-L Transition 100 ] 100FT CABLE T T 1 2 T T 4 CH1 1.00V CH3 2.00V CH2 1.00V CH4 2.00V M40.0ns CH3 80 70 60 50 40 30 20 05234-025 3 SHUTDOWN CURRENT (mA) 90 10 05234-023 SUPPLY CURRENT (mA) T 0 –40 640mV –20 0 20 40 TEMPERATURE (C) 60 Figure 13. Shutdown Current vs. Temperature Figure 11. Driving 100 ft. Cable L-H Transition Rev. C | Page 8 of 16 80 Data Sheet ADM3491-1 TEST CIRCUITS R/2 CL1 DI VCC RLDIFF D 05234-004 VOC R/2 VOUT CL2 05234-006 VOD Figure 18. Driver Differential Output Delay Test Circuit Figure 14. Driver Voltage Measurement Test Circuit 375Ω VOM RL DE IN 375Ω VOUT CL 05234-010 VTST RL 05234-008 VOD3 S1 VCC Figure 15. Driver Voltage Measurement Test Circuit 2 Figure 19. Driver Propagation Delay Test Circuit VCC DE DI S2 CL VOUT DE IN CL1 A B RO R CL2 Figure 16. Driver Enable/Disable Test Circuit RE Figure 20. Driver/Receiver Propagation Delay Test Circuit VCC +1.5V RLDIFF D 3V –1.5V RE IN VID S2 CL VOUT 05234-009 RL RE 1.5V Figure 17. Receiver Enable/Disable Test Circuit RE CL VOUT 05234-011 0V S1 05234-007 RL S1 05234-005 0V OR 3V Figure 21. Receiver Propagation Delay Test Circuit Rev. C | Page 9 of 16 ADM3491-1 Data Sheet SWITCHING CHARACTERISTICS 3V 3V 1.5V Z 1.5V 1.5V 0V tPLH 0V DE 1.5V tPHL tZL 1/2VO tLZ VO VO 90% POINT 1.5V Y/Z tSKEW tSKEW 90% POINT O/P LOW VOL + 0.25V VOL tHZ tZH 10% POINT 10% POINT tR tF VOH O/P HIGH Y/Z VOH – 0.25V 1.5V 0V Figure 24. Driver Enable/Disable Timing Figure 22. Driver Propagation Delay, Rise/Fall Timing 3V A–B RE 0V 0V 1.5V 1.5V 0V tZL tPHL VOH RO tLZ 1.5V 1.5V VOL 1.5V RO O/P LOW VOL + 0.25V VOL tHZ tZH VOH O/P HIGH RO 1.5V VOH – 0.25V 0V Figure 23. Receiver Propagation Delay Figure 25. Receiver Enable/Disable Timing Rev. C | Page 10 of 16 05234-015 tPLH 05234-013 –VO 05234-012 0V 05234-014 Y Data Sheet ADM3491-1 THEORY OF OPERATION 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 that appear as common-mode voltages on the line. 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 impedance 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. The two main standards approved by the EIA specify the electrical characteristics of transceivers used in differential data transmission: RECEIVER OPEN-CIRCUIT FAIL-SAFE FEATURE   RS-422 standard specifies data rates up to 10 MBaud and line lengths up to 4000 ft. A single driver can drive a transmission line with up to 10 receivers. The receiver input includes a fail-safe feature that guarantees a logic high on the receiver when the inputs are open circuit or floating. 0.1µF RS-485 standard was defined to cater to true multipoint communications. This standard meets or exceeds all the requirements of RS-422, but also allows multiple drivers and receivers to be connected to a single bus. An extended common-mode range of −7 V to +12 V is defined. RE RS-485 Differential 4000 ft. ±1.5 V 54 Ω 12 kΩ min ±200 mV −7 V to +12 V CABLE AND DATA RATE VCC VCC R A Y B Z ADM3491-1 DI DE DI D RS-485/RS-422 LINK D ADM3491-1 Z B Y A RO R RE DE GND 05234-026 GND Figure 26. ADM3491-1 Full-Duplex Data Link Table 6. Comparison of RS-422 and RS-485 Interface Standards RS-422 Differential 4000 ft. ±2 V 100 Ω 4 kΩ min ±200 mV −7 V to +7 V 0.1µF RO The most significant differentiator of the RS-485 standard is that the drivers can be disabled, thereby allowing more than one 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. Specification Transmission Type Maximum Cable Length Minimum Driver Output Voltage Driver Load Impedance Receiver Input Resistance Receiver Input Sensitivity Receiver Input Voltage Range 3.3V 3.3V Table 7. Transmitting Truth Table RE Inputs DE DI Z X X 0 1 1 1 0 0 1 0 X X 0 1 Hi-Z Hi-Z Outputs Y 1 0 Hi-Z Hi-Z Table 8. Receiving Truth Table 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 generated by the current flowing through each wire, thereby reducing the effective inductance of the pair. The ADM3491-1 is designed for bidirectional data communications on multipoint transmission lines. A typical application showing a multipoint transmission network is illustrated in Figure 26. Only one driver can transmit at a particular time, but multiple receivers can be enabled simultaneously. RE DE Inputs A–B Outputs RO 0 0 0 1 X X X X ≥ +0.2 V ≤ −0.2 V Inputs O/C X 0 0 1 Hi-Z Rev. C | Page 11 of 16 ADM3491-1 Data Sheet OUTLINE DIMENSIONS 0.775 (19.69) 0.750 (19.05) 0.735 (18.67) 14 8 1 0.280 (7.11) 0.250 (6.35) 0.240 (6.10) 7 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) PIN 1 0.100 (2.54) BSC 0.060 (1.52) MAX 0.210 (5.33) MAX 0.195 (4.95) 0.130 (3.30) 0.115 (2.92) 0.015 (0.38) MIN 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.015 (0.38) GAUGE PLANE SEATING PLANE 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) 0.014 (0.36) 0.010 (0.25) 0.008 (0.20) 0.430 (10.92) MAX 0.005 (0.13) MIN 0.070 (1.78) 0.050 (1.27) 0.045 (1.14) 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. Figure 27. 14-Lead Plastic Dual In-Line Package [PDIP] Narrow Body (N-14) Dimensions shown in inches and (millimeters) 8.75 (0.3445) 8.55 (0.3366) 4.00 (0.1575) 3.80 (0.1496) 14 8 1 7 6.20 (0.2441) 5.80 (0.2283) 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 0.50 (0.0197)  45° 0.25 (0.0098) 1.75 (0.0689) 1.35 (0.0531) 0.51 (0.0201) 0.31 (0.0122) SEATING PLANE 8° 0.25 (0.0098) 0° 1.27 (0.0500) 0.40 (0.0157) 0.17 (0.0067) COMPLIANT TO JEDEC STANDARDS MS-012-AB 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. Figure 28. 14-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-14) Dimensions shown in millimeters and (inches) 5.10 5.00 4.90 16 9 4.50 4.40 4.30 6.40 BSC 1 8 PIN 1 1.20 MAX 0.15 0.05 0.65 BSC 0.30 0.19 COPLANARITY 0.10 0.20 0.09 SEATING PLANE 8° 0° 0.75 0.60 0.45 COMPLIANT TO JEDEC STANDARDS MO-153-AB Figure 29. 16-Lead Thin Shrink Small Outline Package [TSSOP] (RU-16) Dimensions shown in millimeters Rev. C | Page 12 of 16 Data Sheet ADM3491-1 ORDERING GUIDE Model1 ADM3491ANZ-1 ADM3491AR-1 ADM3491ARZ-1 ADM3491ARZ-1REEL ADM3491ARZ-1REEL7 ADM3491ARU-1 ADM3491ARU-1REEL ADM3491ARUZ-1 ADM3491ARUZ-1REEL ADM3491ARUZ-1REEL7 1 Temperature Range −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C Package Description 14-Lead Plastic DIP 14-Lead Narrow Body Small Outline [SOIC] 14-Lead Narrow Body Small Outline [SOIC] 14-Lead Narrow Body Small Outline [SOIC] 14-Lead Narrow Body Small Outline [SOIC] 16-Lead Thin Shrink Small Outline [TSSOP] 16-Lead Thin Shrink Small Outline [TSSOP] 16-Lead Thin Shrink Small Outline [TSSOP] 16-Lead Thin Shrink Small Outline [TSSOP] 16-Lead Thin Shrink Small Outline [TSSOP] Z = RoHS Compliant Part. Rev. C | Page 13 of 16 Package Option N-14 R-14 R-14 R-14 R-14 RU-16 RU-16 RU-16 RU-16 RU-16 Ordering Quantity 2,500 1,000 2,500 2,500 1,000 ADM3491-1 Data Sheet NOTES Rev. C | Page 14 of 16 Data Sheet ADM3491-1 NOTES Rev. C | Page 15 of 16 ADM3491-1 Data Sheet NOTES ©1998–2014 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05234-0-6/14(C) Rev. C | Page 16 of 16