Is Now Part of To learn more about ON Semiconductor, please visit our website at www.onsemi.com Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor product management systems do not have the ability to manage part nomenclature that utilizes an underscore (_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please email any questions regarding the system integration to Fairchild_questions@onsemi.com. ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

7 4 L C X December 2013 2 4 5 — 74LCX245 L o Low Voltage Bidirectional Transceiver with 5V Tolerant w V o Inputs and Outputs l t a g e Features General Description B i d ■ 5V tolerant inputs and outputs The LCX245 contains eight non-inverting bidirectional i r ■ 2.3V to 3.6V V specifications provided buffers with 3-STATE outputs and is intended for bus e CC c ■ 7.0ns tPD max. (VCC = 3.3V), 10µA ICC max. ovoriletangteed ( 2a.p5pVl icaantdio 3n.s3.V T) hVe d eavpipcleic aisti odness wiginthe dc afpoar bliolitwy tio ■ Power down high impedance inputs and outputs CC n of interfacing to a 5V signal environment. The T/R input a ■ Supports live insertion/withdrawal(1) determines the direction of data flow through the device. l T ■ ±24mA output drive (VCC = 3.0V) The OE input disables both the A and B ports by placing ra ■ Implements proprietary noise/EMI reduction circuitry them in a high impedance state. n s ■ Latch-up performance exceeds 500mA The LCX245 is fabricated with an advanced CMOS tech- c e ■ ESD performance: nology to achieve high speed operation while maintain- i v – Human body model > 2000V ing CMOS low power dissipation. e r – Machine model > 200V w i ■ Leadless DQFN package th 5 V Note: T 1. To ensure the high-impedance state during power up o l or down, OE should be tied to V through a pull-up e CC r resistor: the minimum value or the resistor is a n determined by the current-sourcing capability of the t driver. In p u t s Ordering Information a n d Package O Order Number Number Package Description u t p 74LCX245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide u t s 74LCX245SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74LCX245BQX(2) MLP20B 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 4.5mm 74LCX245MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide 74LCX245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Note: 2. DQFN package available in Tape and Reel only. Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number. All packages are lead free per JEDEC: J-STD-020B standard. ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1

7 4 Connection Diagrams Logic Symbol L C X Pin Assignments for SOIC, SOP, SSOP, and TSSOP 2 4 5 — L o w V o l t a g e Truth Table B i d Inputs ir e c OE T/R Outputs t i o L L Bus B – B Data to Bus A – A n 0 7 0 7 a L H Bus A0 – A7 Data to Bus B0 – B7 l T r Pin Assignment for DQFN H X HIGH Z State on A – A , B – B (3) a 0 7 0 7 n s H = HIGH Voltage Level c e L = LOW Voltage Level i v X = Immaterial e r Z = High Impedance w i t h Note: 5 3. Unused bus terminals during HIGH Z State must be V held HIGH or LOW. T o l e r a Logic Diagram n t I n p u t s a n d O (Top Through View) (Bottom View) u t p u t s Pin Description Pin Description Names OE Output Enable Input T/R Transmit/Receive Input A –A Side A Inputs or 3-STATE Outputs 0 7 B –B Side B Inputs or 3-STATE Outputs 0 7 DAP No Connect Note: DAP (Die Attach Pad) ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 2

7 4 Absolute Maximum Ratings L C Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be X 2 operable above the recommended operating conditions and stressing the parts to these levels is not recommended. 4 In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. 5 The absolute maximum ratings are stress ratings only. — L Symbol Parameter Rating o w VCC Supply Voltage –0.5V to +7.0V V V DC Input Voltage –0.5V to +7.0V o I l t V DC Output Voltage a O g e Output in 3-STATE –0.5V to +7.0V B Output in HIGH or LOW State(4) –0.5V to V + 0.5V i CC d I DC Input Diode Current, V < GND –50mA ir IK I e c IOK DC Output Diode Current ti V < GND –50mA o O n VO > VCC +50mA al T I DC Output Source/Sink Current ±50mA r O a n ICC DC Supply Current per Supply Pin ±100mA s c IGND DC Ground Current per Ground Pin ±100mA e i v TSTG Storage Temperature –65°C to +150°C e r Note: w i 4. I Absolute Maximum Rating must be observed. t O h 5 V Recommended Operating Conditions(5) T o The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended le r operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not a n recommend exceeding them or designing to absolute maximum ratings. t I n Symbol Parameter Min. Max. Units p u VCC Supply Voltage ts Operating 2.0 3.6 V a n Data Retention 1.5 3.6 d V Input Voltage 0 5.5 V O I u VO Output Voltage tp u 3-STATE 0 5.5 V t s HIGH or LOW State 0 V CC IOH / IOL Output Current V = 3.0V–3.6V ±24 mA CC V = 2.7V–3.0V ±12 CC V = 2.3V–2.7V ±8 CC T Free-Air Operating Temperature –40 85 °C A ∆t / ∆V Input Edge Rate, VIN = 0.8V–2.0V, VCC = 3.0V 0 10 ns / V Note: 5. Unused inputs must be held HIGH or LOW. They may not float. ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 3

7 4 DC Electrical Characteristics L C X TA = –40°C to +85°C 2 4 Symbol Parameter V (V) Conditions Min. Max. Units 5 CC — V HIGH Level Input Voltage 2.3–2.7 1.7 V IH L 2.7–3.6 2.0 o w VIL LOW Level Input Voltage 2.3–2.7 0.7 V V o 2.7–3.6 0.8 l t VOH HIGH Level Output Voltage 2.3–3.6 IOH = –100µA VCC – 0.2 V ag e 2.3 IOH = –8mA 1.8 B 2.7 IOH = –12mA 2.2 id i 3.0 IOH = –18mA 2.4 re c I = –24mA 2.2 t OH i o V LOW Level Output Voltage 2.3–3.6 I = 100µA 0.2 V n OL OL a 2.3 IOL = 8mA 0.6 l T 2.7 IOL = 12mA 0.4 ra n 3.0 I = 16mA 0.4 s OL c I = 24mA 0.55 e OL i v I Input Leakage Current 2.3–3.6 0 ≤ V ≤ 5.5V ±5.0 µA e I I r I 3-STATE Output Leakage 2.3–3.6 0 ≤ V ≤ 5.5V, ±5.0 µA w OZ O VI = VIH or VIL ith IOFF Power-Off Leakage Current 0 VI or VO = 5.5V 10 µA 5 V ICC Quiescent Supply Current 2.3–3.6 VI = VCC or GND 10 µA T o 3.6V ≤ VI, VO ≤ 5.5V(6) ±10 le ∆ICC Increase in ICC per Input 2.3–3.6 VIH = VCC – 0.6V 500 µA ra n Note: t I n 6. Outputs disabled or 3-STATE only. p u t s AC Electrical Characteristics a n d T = –40°C to +85°C, R = 500Ω A L O V = 3.3V ± 0.3V, V = 2.7V, V = 2.5V ± 0.2V, u CC CC CC t C = 50pF C = 50pF C = 30pF p L L L u t Symbol Parameter Min. Max. Min. Max. Min. Max. Units s t , t Propagation Delay, 1.5 7.0 1.5 8.0 1.5 8.4 ns PHL PLH A to B or B to A n n n n t , t Output Enable Time 1.5 8.5 1.5 9.5 1.5 10.5 ns PZL PZH t , t Output Disable Time 1.5 7.5 1.5 8.5 1.5 9.0 ns PLZ PHZ t , t Output to Output Skew(7) 1.0 ns OSHL OSLH Note: 7. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (t ) or LOW-to-HIGH (t ). OSHL OSLH ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 4

7 4 Dynamic Switching Characteristics L C X TA = 25°C 2 4 Symbol Parameter V (V) Conditions Typical Unit 5 CC — V Quiet Output Dynamic Peak V 3.3 C = 50pF, V = 3.3V, V = 0V 0.8 V OLP OL L IH IL L 2.5 C = 30pF, V = 2.5V, V = 0V 0.6 o L IH IL w VOLV Quiet Output Dynamic Valley VOL 3.3 CL = 50pF, VIH = 3.3V, VIL = 0V –0.8 V V 2.5 C = 30pF, V = 2.5V, V = 0V –0.6 o L IH IL l t a g e B Capacitance id i r Symbol Parameter Conditions Typical Units e c t CIN Input Capacitance VCC = Open, VI = 0V or VCC 7.0 pF io n COUT Output Capacitance VCC = 3.3V, VI = 0V or VCC 8.0 pF a l C Power Dissipation Capacitance V = 3.3V, V = 0V or V , f = 10MHz 25.0 pF T PD CC I CC r a n s c e i v e r w i t h 5 V T o l e r a n t I n p u t s a n d O u t p u t s ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 5

7 4 AC Loading and Waveforms (Generic for LCX Family) LC X 2 Test Switch 4 5 t , t Open — PLH PHL tPZL, tPLZ 6V at VCC = 3.3 ± 0.3V L V x 2 at V = 2.5 ± 0.2V o CC CC w tPZH, tPHZ GND V o l t a g Figure 1. AC Test Circuit (C includes probe and jig capacitance) e L B i d i r e c t i o n a l T r a n s Waveform for Inverting and Non-Inverting Functions 3-STATE Output High Enable and c Disable Times for Logic e i v e r w i t h 5 V T o l e r a n t I n Propagation Delay. Pulse Width and t Waveforms Setup Time, Hold Time and Recovery Time for Logic p rec u t s a n d O u t p u t s 3-STATE Output Low Enable and t and t rise fall Disable Times for Logic V CC Symbol 3.3V ± 0.3V 2.7V 2.5V ± 0.2V Vmi 1.5V 1.5V VCC / 2 Vmo 1.5V 1.5V VCC / 2 V V + 0.3V V + 0.3V V + 0.15V x OL OL OL V V – 0.3V V – 0.3V V – 0.15V y OH OH OH Figure 2. Waveforms (Input Characteristics; f = 1MHz, t = t = 3ns) r f ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 6

7 4 Schematic Diagram (Generic for LCX Family) LC X 2 4 5 — L o w V o l t a g e B i d i r e c t i o n a l T r a n s c e i v e r w i t h 5 V T o l e r a n t I n p u t s a n d O u t p u t s ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 7

7 4 Tape and Reel Specification L C X Tape Format for DQFN 2 4 Package Designator Tape Section Number of Cavities Cavity Status Cover Tape Status 5 — BQX Leader (Start End) 125 (typ.) Empty Sealed L Carrier 3000 Filled Sealed o w Trailer (Hub End) 75 (typ.) Empty Sealed V o l t a Tape Dimension inches (millimeters) g e B i d i r e c t i o n a l T r a n s c e i v e r w i t h 5 V T o l e r a n t I n p u t s a n d O Reel Dimensions inches (millimeters) u t p u t s Tape Size A B C D N W1 W2 12mm 13.0 (330.0) 0.059 (1.50) 0.512 (13.00) 0.795 (20.20) 2.165 (55.00) 0.488 (12.4) 0.724 (18.4) ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 8

7 4 Physical Dimensions L C X 2 13.00 4 12.60 5 A — 11.43 L 20 11 o B w V o l t a 9.50 g e 10.65 7.60 10.00 7.40 B i d 2.25 ir e c t i o n 1 10 0.65 a PINONE 00..3551 1.27 1.27 l T INDICATOR r a 0.25 M C B A n LANDPATTERNRECOMMENDATION s c e i 2.65MAX v SEEDETAILA e r w 0.33 it C 0.20 h 5 0.30 0.10 C V 0.75 0.10 SEATINGPLANE T X45° o 0.25 l NOTES:UNLESSOTHERWISESPECIFIED e r a (R0.10) n A) THISPACKAGECONFORMSTOJEDEC (R0.10) GAGEPLANE MS-013,VARIATIONAC,ISSUEE t In B) ALLDIMENSIONSAREINMILLIMETERS. p 8° 0.25 u 0° C) DIMENSIONSDONOTINCLUDEMOLD t FLASHORBURRS. s 1.27 D) CONFORMSTOASMEY14.5M-1994 a n 0.40 SEATINGPLANE E) LANDPATTERNSTANDARD:SOIC127P1030X265-20L d (1.40) DETAILA F) DRAWINGFILENAME:MKT-M20BREV3 O u SCALE:2:1 t p u Figure 3. 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide t s Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 9

7 4 Physical Dimensions (Continued) LC X 2 4 5 — L o w V o l t a g e B i d i r e c t i o n a l T r a n s c e i v e r w i t h 5 V T o l e r a n t I n p u t s a n d O u t p u t s Figure 4. 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 10

7 4 Physical Dimensions (Continued) LC X 2 4 5 — L o w V o l t a g e B i d i r e c t i o n a l T r a n s c e i v e r w i t h 5 V T o l e r a n t I n p u t s a n d O u t p u t s Figure 5. 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 4.5mm Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 11

7 4 Physical Dimensions (Continued) LC X 2 4 5 — L o w V o l t a g e B i d i r e c t i o n a l T r a n s c e i v e r w i t h 5 V T o l e r a n t I n p u t s a n d O u t p u t s Figure 6. 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 12

7 4 Physical Dimensions (Continued) LC X 2 4 5 — L o w V o l t a g e B i d i r e c t i o n a l T r a n s c e i v e r w i t h 5 V T o l e r a n t I n p u t s a n d O u t p u t s Figure 8. 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74LCX245 Rev. 1.11.1 13

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Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: O N Semiconductor: 74LCX245SJX 74LCX245WMX 74LCX245SJ 74LCX245MTCX 74LCX245WM 74LCX245BQX 74LCX245MTC 74LCX245MSAX 74LCX245MSA