74LCXR2245 Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports Features General Description ■ 5V tolerant inputs and outputs The LCXR2245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus oriented applications. The device is designed for low voltage (2.5V and 3.3V) VCC applications with capability of interfacing to a 5V signal environment. The T/R input determines the direction of data flow through the device. The OE input disables both the A and B ports by placing them in a high impedance state. The 26Ω series resistor helps reduce output overshoot and undershoot. ■ 2.3V–3.6V VCC specifications provided ■ 8.0ns tPD max. (VCC = 3.3V), 10µA ICC max. ■ Power down high impedance inputs and outputs ■ Supports live insertion/withdrawal(1) ■ ±12mA output drive (VCC = 3.0V) ■ Implements proprietary noise/EMI reduction circuitry ■ Latch-up performance exceeds 500mA ■ Equivalent 26Ω series resistor on all outputs ■ ESD performance: – Human body model > 2000V – Machine model > 200V Note: 1. To ensure the high-impedance state during power up or down, OE should be tied to VCC through a pull-up resistor: the minimum value or the resistor is determined by the current-sourcing capability of the driver. The LCXR2245 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining CMOS low power dissipation. Ordering Information Package Number Package Description 74LCXR2245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74LCXR2245SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Order Number 74LCXR2245MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide 74LCXR2245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 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. ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports March 2008 Logic Symbol Truth Table Inputs Pin Description Pin Names Description OE T/R Outputs L L Bus B0 – B7 Data to Bus A0 – A7 L H Bus A0 – A7 Data to Bus B0 – B7 H X HIGH Z State on A0 – A7, B0 – B7(2) OE Output Enable Input H = HIGH Voltage Level T/R Transmit/Receive Input L = LOW Voltage Level A0–A7 Side A Inputs or 3-STATE Outputs X = Immaterial B0–B7 Side B Inputs or 3-STATE Outputs Z = High Impedance Note: 2. Unused bus terminals during HIGH Z State must be held HIGH or LOW. Logic Diagram ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 2 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports Connection Diagram Symbol VCC Parameter Rating Supply Voltage –0.5V to +7.0V VI DC Input Voltage –0.5V to +7.0V VO DC Output Voltage Output in 3-STATE –0.5V to +7.0V Output in HIGH or LOW State(3) IIK DC Input Diode Current, VI < GND IOK DC Output Diode Current –0.5V to VCC + 0.5V –50mA VO < GND –50mA VO > VCC +50mA IO DC Output Source/Sink Current ±50mA ICC DC Supply Current per Supply Pin ±100mA IGND DC Ground Current per Ground Pin ±100mA TSTG Storage Temperature –65°C to +150°C Note: 3. IO Absolute Maximum Rating must be observed. Recommended Operating Conditions(4) The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to absolute maximum ratings. Symbol VCC Parameter Min. Max. Units Operating 2.0 3.6 V Data Retention 1.5 3.6 0 5.5 V HIGH or LOW State 0 VCC V 3-STATE 0 5.5 Supply Voltage VI Input Voltage VO Output Voltage IOH / IOL TA ∆t / ∆V Output Current VCC = 3.0V–3.6V ±12 VCC = 2.7V–3.0V ±8 VCC = 2.3V–2.7V ±4 Free-Air Operating Temperature Input Edge Rate, VIN = 0.8V–2.0V, VCC = 3.0V mA –40 85 °C 0 10 ns / V Note: 4. Unused inputs must be held HIGH or LOW. They may not float. ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 3 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. TA = –40°C to +85°C Symbol VIH VIL VOH VOL Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Voltage VCC (V) Conditions Min 2.3–2.7 1.7 2.7–3.6 2.0 Max V 2.3–2.7 0.7 2.7–3.6 0.8 2.3–3.6 IOH = –100µA IOH = –4mA 1.8 2.7 IOH = –4mA 2.2 3.0 IOH = –6mA 2.4 2.7 IOH = –8mA 2.0 3.0 IOH = –12mA 2.0 V IOL = 100µA 0.2 2.3 IOL = 4mA 0.6 2.7 IOL = 4mA 0.4 3.0 IOL = 6mA 0.55 2.7 IOL = 8mA 0.6 3.0 IOL = 12mA 0.8 2.3–3.6 V VCC – 0.2 2.3 Units V II Input Leakage Current 2.3–3.6 0 ≤ VI ≤ 5.5V ±5.0 µA IOZ 3-STATE I/O Leakage 2.3–3.6 0 ≤ VO ≤ 5.5V, VI = VIH or VIL ±5.0 µA IOFF Power-Off Leakage Current 0 VI or VO = 5.5V 10 µA ICC Quiescent Supply Current µA ∆ICC Increase in ICC per Input 2.3–3.6 VI = VCC or GND 10 2.3–3.6 3.6V ≤ VI, VO ≤ ±10 2.3–3.6 VIH = VCC –0.6V 5.5V(5) 500 µA Note: 5. Outputs disabled or 3-STATE only. AC Electrical Characteristics TA = –40°C to +85°C, RL = 500Ω VCC = 3.3V ± 0.3V, CL = 50pF Symbol Parameter VCC = 2.7V, CL = 50pF VCC = 2.5V ± 0.2V, CL = 30pF Min. Max. Min. Max. Min. Max. Units tPHL, tPLH Propagation Delay, An to Bn or Bn to An 1.5 8.0 1.5 9.0 1.5 9.6 ns tPZL, tPZH Output Enable Time 1.5 9.5 1.5 10.5 1.5 11.0 ns tPLZ, tPHZ Output Disable Time 1.5 7.5 1.5 8.5 1.5 9.0 tOSHL, tOSLH Output to Output Skew(6) 1.0 ns ns Note: 6. 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 (tOSHL) or LOW-to-HIGH (tOSLH). ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 4 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports DC Electrical Characteristics TA = 25°C Symbol Parameter VCC (V) VOLP Quiet Output Dynamic Peak VOL 3.3 VOLV Quiet Output Dynamic Valley VOL Conditions Typical Unit CL = 50pF, VIH = 3.3V, VIL = 0V 0.5 V 2.5 CL = 30pF, VIH = 2.5V, VIL = 0V 0.4 3.3 CL = 50pF, VIH = 3.3V, VIL = 0V 0.5 2.5 CL = 30pF, VIH = 2.5V, VIL = 0V 0.4 V Capacitance Symbol Parameter Conditions Typical Units Input Capacitance VCC = Open, VI = 0V or VCC 7 pF COUT Output Capacitance VCC = 3.3V, VI = 0V or VCC 8 pF CPD Power Dissipation Capacitance VCC = 3.3V, VI = 0V or VCC, f = 10MHz 25 pF CIN ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 5 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports Dynamic Switching Characteristics Test Switch tPLH, tPHL Open tPZL, tPLZ 6V at VCC = 3.3 ± 0.3V VCC x 2 at VCC = 2.5 ± 0.2V tPZH, tPHZ GND Figure 1. AC Test Circuit (CL includes probe and jig capacitance) Waveform for Inverting and Non-Inverting Functions 3-STATE Output High Enable and Disable Times for Logic Propagation Delay. Pulse Width and trec Waveforms Setup Time, Hold Time and Recovery Time for Logic 3-STATE Output Low Enable and Disable Times for Logic trise and tfall VCC 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 Vx VOL + 0.3V VOL + 0.3V VOL + 0.15V Vy VOH – 0.3V VOH – 0.3V VOH – 0.15V Figure 2. Waveforms (Input Characteristics; f = 1MHz, tr = tf = 3ns) ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 6 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports AC Loading and Waveforms (Generic for LCX Family) 7 www.fairchildsemi.com ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports Schematic Diagram (Generic for LCX Family) 13.00 12.60 A 11.43 20 11 B 9.50 10.65 7.60 10.00 7.40 2.25 1 PIN ONE INDICATOR 0.51 0.35 1.27 0.25 M 10 0.65 1.27 C B A LAND PATTERN RECOMMENDATION 2.65 MAX SEE DETAIL A 0.33 0.20 C 0.75 0.25 X 45° SEATING PLANE NOTES: UNLESS OTHERWISE SPECIFIED (R0.10) GAGE PLANE (R0.10) 0.10 C 0.30 0.10 0.25 8° 0° A) THIS PACKAGE CONFORMS TO JEDEC MS-013, VARIATION AC, ISSUE E B) ALL DIMENSIONS ARE IN MILLIMETERS. C) DIMENSIONS DO NOT INCLUDE MOLD FLASH OR BURRS. D) CONFORMS TO ASME Y14.5M-1994 1.27 0.40 SEATING PLANE (1.40) E) LANDPATTERN STANDARD: SOIC127P1030X265-20L DETAIL A F) DRAWING FILENAME: MKT-M20BREV3 SCALE: 2:1 Figure 3. 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" 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/ ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 8 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports Physical Dimensions 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/ ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 9 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports Physical Dimensions (Continued) Figure 5. 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/ ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 10 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports Physical Dimensions (Continued) Figure 6. 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/ ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 11 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports Physical Dimensions (Continued) ACEx® Build it Now™ CorePLUS™ CROSSVOLT™ CTL™ Current Transfer Logic™ EcoSPARK® EZSWITCH™ * ™ PDP-SPM™ Power220® POWEREDGE® Power-SPM™ PowerTrench® Programmable Active Droop™ QFET® QS™ QT Optoelectronics™ Quiet Series™ RapidConfigure™ SMART START™ SPM® STEALTH™ SuperFET™ SuperSOT™-3 SuperSOT™-6 SuperSOT™-8 FPS™ FRFET® Global Power ResourceSM Green FPS™ Green FPS™e-Series™ GTO™ i-Lo™ IntelliMAX™ ISOPLANAR™ MegaBuck™ MICROCOUPLER™ MicroFET™ MicroPak™ MillerDrive™ Motion-SPM™ OPTOLOGIC® OPTOPLANAR® ® Fairchild® Fairchild Semiconductor® FACT Quiet Series™ FACT® FAST® FastvCore™ FlashWriter® * ® SupreMOS™ SyncFET™ ® The Power Franchise® TinyBoost™ TinyBuck™ TinyLogic® TINYOPTO™ TinyPower™ TinyPWM™ TinyWire™ µSerDes™ UHC® Ultra FRFET™ UniFET™ VCX™ * EZSWITCH™ and FlashWriter® are trademarks of System General Corporation, used under license by Fairchild Semiconductor. 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Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Product Status Definition Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary First Production This datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice to improve the design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. Rev. I33 ©2000 Fairchild Semiconductor Corporation 74LCXR2245 Rev. 1.2.0 www.fairchildsemi.com 12 74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26Ω Series Resistors on Both A and B Ports TRADEMARKS The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not intended to be an exhaustive list of all such trademarks.