74VCX245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs General Description Features The VCX245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus oriented applications. The T/R input determines the direction of data flow. The OE input disables both the A and B ports by placing them in a high impedance state. 1.4V to 3.6V VCC supply operation The 74VCX245 is designed for low voltage (1.4V to 3.6V) VCC applications with I/O compatibility up to 3.6V. tPD The 74VCX245 is fabricated with an advanced CMOS technology to achieve high-speed operation while maintaining low CMOS power dissipation. Static Drive (IOH/IOL) 3.6V tolerant inputs and outputs Power-off high impedance inputs and outputs Supports Live Insertion and Withdrawal (Note 1) 3.5 ns max for 3.0V to 3.6V VCC r24 mA @ 3.0V VCC Uses proprietary noise/EMI reduction circuitry Latchup performance exceeds 300 mA ESD performance: Human body model ! 2000V Machine model ! 200V Leadless DQFN Pb-Free package Note 1: To ensure the high impedance state during power up and power down, OEn should be tied to VCC through a pull up resistor. The minimum value of the resistor is determined by the current sourcing capability of the driver. Ordering Code: Order Number Package Number 74VCX245WM (Note 2) M20B 74VCX245BQX (Note 3) MLP020B 74VCX245MTC (Note 2) MTC20 Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 4.5mm 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Pb-Free package per JEDEC J-STD-020B. Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code. Note 3: DQFN package available in Tape and Reel only, Logic Symbol Pin Descriptions Pin Names (c) 2005 Fairchild Semiconductor Corporation DS500167 Description OE Output Enable Input (Active LOW) T/R Transmit/Receive Input A0-A7 Side A Inputs or 3-STATE Outputs B0-B7 Side B Inputs or 3-STATE Outputs www.fairchildsemi.com 74VCX245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs June 1999 Revised April 2005 74VCX245 Connection Diagrams Truth Table Pin Assignments for SOIC and TSSOP Inputs OE Outputs T/R L L L H Bus B0-B7 Data to Bus A0-A7 Bus A0-A7 Data to Bus B0-B7 H X HIGH Z State on A0-A7, B0-B7 (Note 4) H HIGH Voltage Level L LOW Voltage Level X Immaterial Z High Impedance Note 4: Unused bus terminals during HIGH Z State must be held HIGH or LOW. Logic Diagram Pin Assignment for DQFN (Top Through View) www.fairchildsemi.com 2 Recommended Operating Conditions (Note 7) 0.5V to 4.6V 0.5V to 4.6V Supply Voltage (VCC) DC Input Voltage (VI) Power Supply DC Output Voltage (VO) Outputs 3-STATE Outputs Active (Note 6) DC Input Diode Current (IIK) VI 0V 0.5V to 4.6V 0.5V to VCC 0.5V 50 mA 50 mA 50 mA VO ! VCC (IOH/IOL) Storage Temperature (TSTG) Output in Active States 0V to VCC Output in 3-STATE 0V to 3.6V Output Current in IOH/IOL DC Output Source/Sink Current DC VCC or Ground Current 1.4V to 3.6V 0.3V to 3.6V Output Voltage (VO) DC Output Diode Current (IOK) VO 0V Operating Input Voltage r50 mA r100 mA 65qC to 150qC VCC 3.0V to 3.6V VCC 2.3V to 2.7V VCC 1.65V to 2.3V VCC 1.4V to 1.6V Free Air Operating Temperature (TA) r24 mA r18 mA r6 mA r2 mA 40qC to 85qC Minimum Input Edge Rate ('t/'V) VIN 0.8V to 2.0V, VCC 3.0V 10 ns/V Note 5: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 6: IO Absolute Maximum Rating must be observed. Note 7: Floating or unused inputs must be held HIGH or LOW. DC Electrical Characteristics Symbol VIH VIL Parameter Conditions HIGH Level Input Voltage VCC (V) 2.7 to 3.6 LOW Level Input Voltage Min HIGH Level Output Voltage 1.6 1.65 to 2.3 0.65 u VCC 1.4 to 1.6 0.65 u VCC 2.7 to 3.6 V 0.8 2.3 to 2.7 0.7 1.65 to 2.3 0.35 u V CC V 0.35 u V CC IOH 100 PA 2.7 to 3.6 VCC 0.2 IOH 12 mA 2.7 2.2 IOH 18 mA 3.0 2.4 IOH 24 mA 3.0 2.2 IOH 100 PA 2.3 to 2.7 VCC 0.2 IOH 6 mA 2.3 2.0 IOH 12 mA 2.3 1.8 IOH 18 mA 2.3 1.7 IOH 100 PA 1.65 to 2.3 VCC 0.2 IOH 6 mA IOH 100 PA IOH 2 mA 3 Units 2.0 2.3 to 2.7 1.4 to 1.6 VOH Max 1.65 1.25 1.4 to 1.6 VCC 0.2 1.4 1.05 V www.fairchildsemi.com 74VCX245 Absolute Maximum Ratings(Note 5) 74VCX245 DC Electrical Characteristics Symbol (Continued) Parameter VCC Conditions Min Max Units (V) VOL LOW Level Output Voltage IOL 100 PA 2.7 to 3.6 0.2 IOL 12 mA 2.7 0.4 IOL 18 mA 3.0 0.4 IOL 24 mA 3.0 0.55 IOL 100 PA 2.3 to 2.7 0.2 IOL 12 mA 2.3 0.4 IOL 18 mA 2.3 0.6 IOL 100 PA 1.65 to 2.3 0.2 IOL 6 mA 1.65 0.3 IOL 100 PA IOL 2 mA II Input Leakage Current 0 d VI d 3.6V IOZ 3-STATE Output Leakage 0 d VO d 3.6V IOFFI Power-OFF Leakage Current 0 d (VI, VO) d 3.6V ICC Quiescent Supply Current VI VI VIH or VIL VCC or GND VCC d (VI, VO) d 3.6V (Note 8) 'ICC Increase in ICC per Input VIH VCC 0.6V V 1.4 to 1.6 0.2 1.4 0.35 1.4 to 3.6 r5.0 PA 1.4 to 3.6 r10 PA 0 10 PA 1.4 to 3.6 20 1.4 to 3.6 r20 2.7 to 3.6 750 PA PA Note 8: Outputs disabled or 3-STATE only. AC Electrical Characteristics Symbol tPHL, tPLH Parameter Propagation Delay (Note 9) Conditions CL 30 pF, RL 500: An to Bn or Bn to An tPZL, tPZH tPLZ, tPHZ Output Enable Time Output Disable Time tOSHL Output to Output Skew tOSLH (Note 10) TA 40qC to 85qC (V) Min Max 3.3 r 0.3 0.6 3.5 2.5 r 0.2 0.8 4.2 1.8 r 0.15 1.5 8.4 CL 15 pF, RL 2k: 1.5 r 0.1 1.0 16.8 CL 30 pF, RL 500: 3.3 r 0.3 0.6 4.5 2.5 r 0.2 0.8 5.6 1.8 r 0.15 1.5 9.8 CL 15 pF, RL 2k: 1.5 r 0.1 1.0 19.6 CL 30 pF, RL 500: 3.3 r 0.3 0.6 3.6 2.5 r 0.2 0.8 4.0 1.8 r 0.15 1.5 7.2 1.5 r 0.1 1.0 14.4 CL 15 pF, RL 2k: CL 30 pF, RL 500: CL Note 9: For CL VCC 15 pF, RL 2k: 3.3 r 0.3 Units Figure Number ns Figures 1, 2 Figures 5, 6 ns Figures 1, 3, 4 Figures 5, 7, 8 ns Figures 1, 3, 4 Figures 5, 7, 8 0.5 2.5 r 0.2 0.5 1.8 r 0.15 0.75 1.5 r 0.1 1.5 ns 50PF, add approximately 300 ps to the AC maximum specification. Note 10: 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). www.fairchildsemi.com 4 Symbol VOLP VOLV VOHV Parameter Quiet Output Dynamic Peak VOL Quiet Output Dynamic Valley VOL Quiet Output Dynamic Valley VOH VCC (V) Conditions CL CL CL 30 pF, VIH 30 pF, VIH 30 pF, VIH VCC, VIL 0V VCC, V IL VCC, V IL 0V 0V TA 25qC Typical 1.8 0.3 2.5 0.7 3.3 1.0 1.8 0.3 2.5 0.7 3.3 1.0 1.8 1.3 2.5 1.7 3.3 2.0 Units V V V Capacitance Symbol Parameter TA Conditions 25qC Typical Units CIN Input Capacitance VI 0V or VCC, VCC 1.8V, 2.5V or 3.3V 6.0 CI/O Input/Output Capacitance VI 0V or VCC, VCC 1.8V, 2.5V or 3.3V 7.0 pF CPD Power Dissipation Capacitance VI 0V or VCC, f 20.0 pF 5 10 MHz, VCC 1.8V, 2.5V or 3.3V pF www.fairchildsemi.com 74VCX245 Dynamic Switching Characteristics 74VCX245 AC Loading and Waveforms (VCC 3.3V r 0.3V to 1.8V r 0.15V) FIGURE 1. AC Test Circuit TEST SWITCH tPLH, tPHL Open tPZL, tPLZ 6V at VCC VCC x 2 at VCC tPZH, tPHZ 3.3V r 0.3V; 2.5V r 0.2V; 1.8V r 0.15V GND FIGURE 2. Waveform for Inverting and Non-Inverting Functions FIGURE 3. 3-STATE Output High Enable and Disable Times for Low Voltage Logic FIGURE 4. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic Symbol www.fairchildsemi.com VCC 3.3V r 0.3V 2.5V r 0.2V 1.8V r 0.15V Vmi 1.5V VCC/2 VCC/2 Vmo 1.5V VCC/2 VCC/2 VX VOL 0.3V VOL 0.15V VOL 0.15V VY VOH 0.3V VOH 0.15V VOH 0.15V 6 74VCX245 AC Loading and Waveforms (VCC 1.5 r 0.1V) TEST SWITCH tPLH, tPHL Open tPZL, tPLZ 1.5V r 0.1V VCC x 2 at VCC tPZH, tPHZ GND FIGURE 5. AC Test Circuit FIGURE 6. Waveform for Inverting and Non-Inverting Functions FIGURE 7. 3-STATE Output High Enable and Disable Times for Low Voltage Logic FIGURE 8. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic VCC Symbol 1.5V r 0.1V VCC/2 Vmi Vmo VCC/2 VX VOL 0.1V VY VOH 0.1V 7 www.fairchildsemi.com 74VCX245 Tape and Reel Specification Tape Format for DQFN Package Designator BQX Tape Number Cavity Section Cavities Status Cover Tape Status Leader (Start End) 125 (typ) Empty Sealed Carrier 3000 Filled Sealed Trailer (Hub End) 75 (typ) Empty Sealed TAPE DIMENSIONS inches (millimeters) REEL DIMENSIONS inches (millimeters) Tape Size 12 mm A B C D N W1 W2 13.0 0.059 0.512 0.795 2.165 0.488 0.724 (330.0) (1.50) (13.00) (20.20) (55.00) (12.4) (18.4) www.fairchildsemi.com 8 74VCX245 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M20B 9 www.fairchildsemi.com 74VCX245 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 4.5mm Package Number MLP020B www.fairchildsemi.com 10 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20 Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 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. 1. 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 to the user. www.fairchildsemi.com 11 www.fairchildsemi.com 74VCX245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued)