Revised May 2005 74LCX16245 Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs and Outputs General Description Features The LCX16245 contains sixteen non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus oriented applications. The device is designed for low voltage (2.5V or 3.3V) VCC applications with capability of interfacing to a 5V signal environment. The device is byte controlled. Each byte has separate control inputs which could be shorted together for full 16-bit operation. The T/R inputs determine the direction of data flow through the device. The OE inputs disable both the A and B ports by placing them in a high impedance state. The LCX16245 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining CMOS low power dissipation. ■ 5V tolerant inputs and outputs ■ 2.3V–3.6V VCC specifications provided ■ 4.5 ns tPD max (VCC 3.3V), 20 PA ICC max ■ Power down high impedance inputs and outputs ■ Supports live insertion/withdrawal (Note 1) ■ r24 mA output drive (VCC 3.0V) ■ Uses patented noise/EMI reduction circuitry ■ Latch-up performance exceeds 500 mA ■ ESD performance: Human body model ! 2000V Machine model ! 200V ■ Also packaged in plastic Fine-Pitch Ball Grid Array (FBGA) 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. Ordering Code: Order Number Package Number 74LCX16245G (Note 2)(Note 3) BGA54A Package Description 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide 74LCX16245MEA (Note 3) MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide 74LCX16245MTD (Note 3) MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Note 2: Ordering code “G” indicates Trays. Note 3: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol © 2005 Fairchild Semiconductor Corporation DS012001 www.fairchildsemi.com 74LCX16245 Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs and Outputs February 1994 74LCX16245 Connection Diagrams Pin Descriptions Pin Names Pin Assignment for SSOP and TSSOP Description OEn Output Enable Input T/Rn Transmit/Receive Input A0–A15 Side A Inputs or 3-STATE Outputs B0–B15 Side B Inputs or 3-STATE Outputs NC No Connect FBGA Pin Assignments 1 2 3 4 5 6 A B0 NC T/R1 OE1 NC A0 B B2 B1 NC NC A1 A2 C B4 B3 VCC VCC A3 A4 D B6 B5 GND GND A5 A6 E B8 B7 GND GND A7 A8 F B10 B9 GND GND A9 A10 A12 G B12 B11 VCC VCC A11 H B14 B13 NC NC A13 A14 J B15 NC T/R2 OE2 NC A15 Truth Tables Inputs Pin Assignment for FBGA OE1 T/R1 Outputs 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 Inputs OE2 T/R2 Outputs L L Bus B8–B15 Data to Bus A8–A15 L H Bus A8–A15 Data to Bus B8–B15 H X HIGH Z State on A8–A15, B8–B15 H HIGH Voltage Level L LOW Voltage Level X Immaterial Z High Impedance (Top Thru View) Logic Diagrams Note: Please note that these diagrams are provided only for the understanding of logic operations and should not be used to estimate propagation delays. www.fairchildsemi.com 2 Symbol Parameter VCC Supply Voltage VI DC Input Voltage VO DC Output Voltage IIK DC Input Diode Current IOK DC Output Diode Current Value IO DC Output Source/Sink Current ICC DC Supply Current per Supply Pin IGND DC Ground Current per Ground Pin TSTG Storage Temperature Conditions 0.5 to 7.0 0.5 to 7.0 0.5 to 7.0 0.5 to VCC 0.5 50 50 50 r50 r100 r100 65 to 150 Units V V Output in 3-STATE Output in HIGH or LOW State (Note 5) VI GND V mA VO GND mA VO ! VCC mA mA mA qC Recommended Operating Conditions (Note 6) Symbol VCC Parameter VI Input Voltage VO Output Voltage IOH/IOL Min Max Operating 2.0 3.6 Data Retention 1.5 3.6 Supply Voltage Output Current TA Free-Air Operating Temperature 't/'V Input Edge Rate, VIN 0.8V–2.0V, VCC 0 5.5 HIGH or LOW State 0 VCC 3-STATE 0 5.5 VCC 3.0V 3.6V VCC 2.7V 3.0V VCC 2.3V 2.7V r24 r12 r8 Units V V V mA 40 85 qC 0 10 ns/V 3.0V Note 4: 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 5: IO Absolute Maximum Rating must be observed. Note 6: Unused inputs or I/O's must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol VIH VIL VOH VOL Parameter Conditions HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Voltage VCC TA 40qC to 85qC (V) 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 IOH 100 PA IOH 8 mA 2.3 3.6 2.3 1.8 IOH 12 mA 2.7 2.2 IOH 18 mA 3.0 2.4 2.2 V 24 mA 3.0 IOL 100 PA 2.3 3.6 0.2 IOL 8mA 2.3 0.6 IOL 12 mA 2.7 0.4 IOL 16 mA 3.0 0.4 IOL 24 mA 3.0 0.55 II Input Leakage Current 0 d VI d 5.5V 2.3 3.6 r5.0 IOZ 3-STATE I/O Leakage 0 d VO d 5.5V 2.3 3.6 r5.0 0 10 IOFF Power-Off Leakage Current V IH or VIL VI or VO 5.5V 3 V VCC 0.2 IOH VI Units V PA PA PA www.fairchildsemi.com 74LCX16245 Absolute Maximum Ratings(Note 4) 74LCX16245 DC Electrical Characteristics Symbol (Continued) Parameter VCC Conditions ICC Quiescent Supply Current VI VCC or GND 3.6V d VI, VO d 5.5V (Note 7) 'ICC Increase in ICC per Input VIH VCC 0.6V 40qC to 85qC TA (V) Min Units Max 2.3–3.6 20 2.3–3.6 r20 2.3–3.6 500 PA PA Note 7: Outputs disabled or 3-STATE only. AC Electrical Characteristics TA Symbol Parameter VCC CL 40qC to 85qC, RL 3.3V r 0.3V 50 pF VCC 2.7V CL 50 pF 500: VCC CL 2.5V r 0.2V 30 pF Min Max Min Max Min Max tPHL Propagation Delay 1.5 4.5 1.5 5.2 1.5 5.4 tPLH An to Bn or Bn to An 1.5 4.5 1.5 5.2 1.5 5.4 tPZL Output Enable Time 1.5 6.5 1.5 7.2 1.5 8.5 1.5 6.5 1.5 7.2 1.5 8.5 1.5 6.4 1.5 6.9 1.5 7.7 1.5 6.4 1.5 6.9 1.5 7.7 tPZH tPLZ Output Disable Time tPHZ tOSHL Output to Output Skew 1.0 tOSLH (Note 8) 1.0 Units ns ns ns ns Note 8: 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). Parameter guaranteed by design. Dynamic Switching Characteristics Symbol VOLP VOLV Parameter Quiet Output Dynamic Peak VOL Quiet Output Dynamic Valley VOL VCC Conditions TA 25qC (V) Typical CL 50 pF, VIH 3.3V, VIL 0V 3.3 0.8 CL 30 pF, VIH 2.5V, VIL 0V 2.5 0.6 CL 50 pF, VIH 3.3V, VIL 0V 3.3 0.8 CL 30 pF, VIH 2.5V, VIL 0V 2.5 0.6 Units V V Capacitance Symbol Parameter Conditions CIN Input Capacitance VCC Open, VI CI/O Input/Output Capacitance VCC 3.3V, VI 0V or VCC CPD Power Dissipation Capacitance VCC 3.3V, VI 0V or VCC, f www.fairchildsemi.com 4 0V or VCC 10 MHz Typical Units 7 pF 8 pF 20 pF 74LCX16245 AC LOADING and WAVEFORMS Generic for LCX Family FIGURE 1. AC Test Circuit (CL includes probe and jig capacitance) Test Switch tPLH, tPHL Open tPZL, tPLZ 6V at VCC 3.3 r 0.3V VCC x 2 at VCC 2.5 r 0.2V tPZH,tPHZ GND 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 trise and tfall 3-STATE Output Low Enable and Disable Times for Logic FIGURE 2. Waveforms (Input Characteristics; f =1MHz, tr = tf = 3ns) Symbol VCC 3.3V r 0.3V 2.7V 2.5V r 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 5 www.fairchildsemi.com 74LCX16245 Schematic Diagram Generic for LCX Family www.fairchildsemi.com 6 74LCX16245 Physical Dimensions inches (millimeters) unless otherwise noted 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide Package Number BGA54A 7 www.fairchildsemi.com 74LCX16245 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide Package Number MS48A www.fairchildsemi.com 8 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Package Number MTD48 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 9 www.fairchildsemi.com 74LCX16245 Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs and Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued)