74VCX164245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs General Description Features The VCX164245 is a dual supply, 16-bit translating transceiver that is designed for two way asynchronous communication between busses at different supply voltages by providing true signal translation. The supply rails consist of VCCB, which is the higher potential rail operating at 2.3V to 3.6V and VCCA, which is the lower potential rail operating at 1.65V to 2.7V. (VCCA must be less than or equal to VCCB for proper device operation.) This dual supply design allows for translation from 1.8V to 2.5V busses to busses at a higher potential, up to 3.3V. Bidirectional interface between busses ranging from 1.65V to 3.6V The Transmit/Receive (T/R) input determines the direction of data flow. Transmit (active-HIGH) enables data from A Ports to B Ports. Receive (active-LOW) enables data from B Ports to A Ports. The Output Enable (OE) input, when HIGH, disables both A and B Ports by placing them in a High-Z condition. The A Port interfaces with the lower voltage bus (1.8V 2.5V). The B Port interfaces with the higher voltage bus (2.7V 3.3V). Also the VCX164245 is designed so that the control pins (T/Rn, OEn) are supplied by VCCB. The 74VCX164245 is suitable for mixed voltage applications such as notebook computers using a 1.8V CPU and 3.3V peripheral components. It is fabricated with an Advanced CMOS technology to achieve high speed operation while maintaining low CMOS power dissipation. Supports Live Insertion and Withdrawal (Note 1) Static Drive (IOH/IOL) r24 mA @ 3.0V VCC r18 mA @ 2.3V VCC r6 mA @ 1.65V VCC Uses proprietary noise/EMI reduction circuitry Functionally compatible with 74 series 16245 Latchup performance exceeds 300 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 power down, OEn should be tied to VCCB 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 Package Description 74VCX164245G (Note 2)(Note 3) BGA54A 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide 74VCX164245MTD (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: Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code. Logic Diagram (c) 2005 Fairchild Semiconductor Corporation DS500159 www.fairchildsemi.com 74VCX164245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs March 2000 Revised June 2005 74VCX164245 Connection Diagrams Pin Descriptions Pin Assignment for TSSOP Pin Names Description OEn Output Enable Input (Active LOW) 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 VCCB VCCA 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 VCCB VCCA A11 H B14 B13 NC NC A13 A14 J B15 NC T/R2 OE2 NC A15 Truth Tables Inputs Pin Assignment for FBGA Outputs OE1 T/R1 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 Outputs OE2 (Top Through View) T/R2 L L L H Bus B8-B15 Data to Bus A8-A15 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 (HIGH or LOW, inputs may not float) Z High Impedance Translator Power Up Sequence Recommendations To guard against power up problems, some simple guidelines need to be adhered to. The VCX164245 is designed so that the control pins (T/Rn, OEn) are supplied by VCCB. Therefore the first recommendation is to begin by powering up the control side of the device, VCCB. The OEn control pins should be ramped with or ahead of VCCB, this will guard against bus contentions and oscillations as all A Port and B Port outputs will be disabled. To ensure the high impedance state during power up or power down, OEn should be tied to VCCB through a pull up resistor. The minimum value of the resistor is determined by the current www.fairchildsemi.com sourcing capability of the driver. Second, the T/Rn control pins should be placed at logic low (0V) level, this will ensure that the B-side bus pins are configured as inputs to help guard against bus contention and oscillations. B-side Data Inputs should be driven to a valid logic level (0V or VCCB), this will prevent excessive current draw and oscillations. VCCA can then be powered up after VCCB, but should never exceed the VCCB voltage level. Upon completion of these steps the device can then be configured for the users desired operation. Following these steps will help to prevent possible damage to the translator device as well as other system components. 2 74VCX164245 Logic Diagrams Please note that these diagrams are provided only for the understanding of logic operations and should not be used to estimate propagation delays. 3 www.fairchildsemi.com 74VCX164245 Absolute Maximum Ratings(Note 4) Recommended Operating Conditions (Note 6) Supply Voltage 0.5V to VCCB 0.5V to 4.6V 0.5V to 4.6V VCCA VCCB DC Input Voltage (VI) Power Supply (Note 7) DC Output Voltage (VI/O) VCCA 1.65V to 2.7V VCCB 2.3V to 3.6V Input Voltage (VI) @ OE, T/R 0.5V to 4.6V Outputs 3-STATE Outputs Active (Note 5) 0.5V to VCCA 0.5V 0.5V to VCCB 0.5V An Bn VO ! VCC DC Output Source/Sink Current 0V to VCCA Bn 0V to VCCB VCCA 2.3V to 2.7V 50 mA VCCA 1.65V to 1.95V VCCB 3.0V to 3.6V 50 mA 50 mA r50 mA VCCB 2.3V to 2.7V DC Output Diode Current (IOK) VO 0V An Output Current in IOH/IOL DC Input Diode Current (IIK) VI 0V Free Air Operating Temperature (TA) VIN r100 mA 0.8V to 2.0V, VCC 3.0V 10 ns/V 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. Supply Pin (ICC or Ground) 65qC to 150qC Storage Temperature (TSTG) r18 mA r6 mA r24 mA r18 mA 40qC to 85qC Minimum Input Edge Rate ('t/'V) (IOH/IOL) DC VCC or Ground Current 0V to VCCB Input/Output Voltage (VI/O) Note 5: IO Absolute Maximum Rating must be observed. Note 6: Unused inputs or I/O pins must be held HIGH or LOW. They may not float. Note 7: Operation requires: VCCA d VCCB DC Electrical Characteristics (1.65V VCCA d 1.95V, 2.3V VCCB d 2.7V) Symbol VIHA Parameter HIGH Level Input Voltage An VIHB VILA Bn, T/R, OE LOW Level Input Voltage An VILB VOHA VOHB VOLA VOLB Conditions Bn, T/R, OE HIGH Level Output Voltage HIGH Level Output Voltage LOW Level Output Voltage LOW Level Output Voltage IOH 100 PA IOH 6 mA IOH IOH VCCB (V) (V) 1.651.95 2.32.7 0.65 x VCC V 1.651.95 2.32.7 1.6 V 1.61.95 2.32.7 0.35 x VCC V 1.651.95 2.32.7 0.7 V Min Max Units 1.651.95 2.32.7 VCCA0.2 1.65 2.32.7 1.25 100 PA 1.651.95 2.32.7 VCCB0.2 18 mA 1.651.95 2.3 1.7 IOL 100 PA 1.651.95 2.32.7 0.2 IOL 6 mA 1.65 2.32.7 0.3 IOL 100 PA 1.651.95 2.32.7 0.2 IOL 18 mA 1.651.95 2.3 0.6 1.651.95 2.32.7 r5.0 PA 1.651.95 2.32.7 r10 PA II Input Leakage Current @ OE, T/R 0V d VI d 3.6V IOZ 3-STATE Output Leakage 0V d VO d 3.6V OE VI V CCB V V V V VIH or VIL IOFF Power OFF Leakage Current 0d (VI, VO) d 3.6V ICCA/ICCB Quiescent Supply Current, An per supply, VCCA / VCCB Bn, OE, & T/R VCCA or GND VCCB or GND VCCA d An d 3.6V VCCB d Bn, OE, T/R d 3.6V 'ICC VCCA 0 0 10 PA 1.651.95 2.32.7 20 PA 1.651.95 2.32.7 r20 PA Increase in ICC per Input, Bn, T/R, OE VI VCCB - 0.6V 1.651.95 2.32.7 750 PA Increase in ICC per Input, An VI VCCA - 0.6V 1.651.95 2.32.7 750 PA www.fairchildsemi.com 4 Symbol Parameter Conditions VCCA VCCB (V) (V) Min Max Units VIHA HIGH Level An 1.65-1.95 3.0-3.6 0.65 x VCC V VIHB Input Voltage Bn, T/R, OE 1.65-1.95 3.0-3.6 2.0 V VILA LOW Level An 1.65-1.95 3.0-3.6 0.35 x VCC V VILB Input Voltage Bn, T/R, OE 1.65-1.95 3.0-3.6 0.8 V VOHA HIGH Level Output Voltage VOHB VOLA VOLB HIGH Level Output Voltage LOW Level Output Voltage LOW Level Output Voltage IOH 100 PA IOH 6 mA IOH IOH 1.65-1.95 3.0-3.6 VCCA-0.2 1.65 3.0-3.6 1.25 100 PA 1.65-1.95 3.0-3.6 VCCA-0.2 24 mA 1.65-1.95 3.0 2.2 IOL 100 PA 1.65-1.95 3.0-3.6 0.2 IOL 6 mA 1.65 3.0-3.6 0.3 IOL 100 PA 1.65-1.95 3.0-3.6 0.2 IOL 24 mA 1.65-1.95 3.0 0.55 1.65-1.95 3.0-3.6 r5.0 PA 1.65-1.95 3.0-3.6 r10 PA 0 0 10 PA 1.65-1.95 3.0-3.6 20 PA 1.65-1.95 3.0-3.6 r20 PA II Input Leakage Current @ OE, T/R 0V d VI d 3.6V IOZ 3-STATE Output Leakage 0V d VO d 3.6V OE* VI VCCB V V V VIH or VIL IOFF Power Off Leakage Current 0 d (VI, VO) d 3.6V ICCA/ICCB Quiescent Supply Current, An per supply, VCCA/VCCB Bn, OE, & T/R VCCA or GND VCCB or GND VCCA d An d 3.6V VCCB d Bn, OE, T/R d 3.6V 'ICC V Increase in ICC per Input, Bn, T/R, OE VI VCCB 0.6V 1.65-1.95 3.0-3.6 750 PA Increase in ICC per Input, An VI VCCA 0.6V 1.65-1.95 3.0-3.6 750 PA DC Electrical Characteristics (2.3V VCCA d 2.7V, 3.0V d VCCB d 3.6V) Symbol VIHA Parameter HIGH Level Input Voltage An VIHB VILA Conditions Bn, T/R, OE LOW Level Input Voltage An VILB Bn, T/R, OE VCCA VCCB (V) (V) 2.3-2.7 3.0-3.6 1.6 2.3-2.7 3.0-3.6 2.0 2.3-2.7 3.0-3.6 0.7 V 2.3-2.7 3.0-3.6 0.8 V 2.3-2.7 3.0-3.6 Min Max Units V V VOHA HIGH Level Output Voltage IOH 100 PA IOH 18 mA 2.3 3.0-3.6 1.7 VOHB HIGH Level Output Voltage IOH 100 PA 2.3-2.7 3.0-3.6 VCCB-0.2 IOH 24 mA 2.3-2.7 3.0 2.2 VOLA LOW Level Output Voltage IOL 100 PA 2.3-2.7 3.0-3.6 0.2 IOL 18 mA 2.3 3.0-3.6 0.6 VOLB LOW Level Output Voltage IOL 100 PA 2.3-2.7 3.0-3.6 0.2 IOL 24 mA 2.3-2.7 3.0 0.55 2.3-2.7 3.0-3.6 r5.0 PA 2.3-2.7 3.0-3.6 r10 PA 0 0 10 PA 2.3-2.7 3.0-3.6 20 PA 2.3-2.7 3.0-3.6 r20 PA II Input Leakage Current @ OE, T/R 0V d VI d 3.6V IOZ 3-STATE Output Leakage @ An 0V d VO d 3.6V OE VI V CCA V V V V VIH or VIL IOFF Power OFF Leakage Current 0 d (VI, VO) d 3.6V ICCA/ICCB Quiescent Supply Current, An per supply, VCCA/V CCB Bn, OE, & T/R VCCA or GND VCCB or GND VCCA d An d 3.6V VCCB d Bn, OE, T/R d 3.6V 'ICC VCCA-0.2 Increase in ICC per Input, Bn, T/R, OE VI VCCB 0.6V 2.3-2.7 3.0-3.6 750 PA Increase in ICC per Input, An VI VCCA 0.6V 2.3-2.7 3.0-3.6 750 PA 5 www.fairchildsemi.com 74VCX164245 DC Electrical Characteristics (1.65V VCCA d 1.95V, 3.0V VCCB d 3.6V) 74VCX164245 AC Electrical Characteristics CL Symbol VCCA Parameter VCCB 500:, TA 30 pF, RL 1.65V to 1.95V VCCA 2.3V to 2.7V VCCB 40qC to 85qC, 1.65V to 1.95V VCCA 2.3V to 2.7V 3.0V to 3.6V VCCB 3.0V to 3.6V Units Min Max Min Max Min Max tPHL, tPLH Propagation Delay, A to B 0.8 5.5 0.6 5.1 0.6 4.0 tPHL, tPLH Propagation Delay, B to A 1.5 5.8 1.5 6.2 0.8 4.4 ns tPZL, tPZH Output Enable Time, OE to B 0.8 5.3 0.6 5.1 0.6 4.0 ns tPZL, tPZH Output Enable Time, OE to A 1.5 8.3 1.5 8.2 0.8 4.6 ns tPLZ, tPHZ Output Disable Time, OE to B 0.8 5.2 0.8 5.6 0.8 4.8 ns tPLZ, tPHZ Output Disable Time, OE to A 0.8 4.6 0.8 4.5 0.8 4.4 ns tosHL Output to Output Skew tosLH (Note 8) 0.75 ns 0.5 0.5 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). Dynamic Switching Characteristics Symbol VOLP Parameter Quiet Output Dynamic Peak VOL, Conditions CL 30 pF, VIH VCC, VIL VCCB (V) (V) Typical 1.8 2.5 0.25 1.8 3.3 0.25 2.5 3.3 0.6 1.8 2.5 0.6 1.8 3.3 0.8 2.5 3.3 0.8 1.8 2.5 0.25 1.8 3.3 0.25 2.5 3.3 0.6 1.8 2.5 0.6 1.8 3.3 0.8 2.5 3.3 0.8 1.8 2.5 1.7 1.8 3.3 2.0 2.5 3.3 2.0 1.8 2.5 1.3 1.8 3.3 1.3 2.5 3.3 1.7 0V B to A Quiet Output Dynamic Peak VOL, CL 30 pF, VIH VCC, VIL 0V A to B VOLV Quiet Output Dynamic Valley VOL, CL 30 pF, VIH VCC, VIL 0V B to A Quiet Output Dynamic Valley VOL, CL 30 pF, VIH VCC, VIL 0V A to B VOHV Quiet Output Dynamic Valley VOH, CL 30 pF, VIH VCC, VIL 0V A to B Quiet Output Dynamic Valley VOH, CL 30 pF, VIH VCC, VIL 0V B to A TA 25qC VCCA Units V V V V V V Capacitance Symbol Parameter Conditions TA 25qC Typical Units CIN Input Capacitance VCCA 2.5V, VCCB 3.3V, VI 0V or VCCA/B 5 pF CI/O Input/Output Capacitance VCCA 2.5V, VCCB 3.3V, VI 0V or VCCA/B 6 pF CPD Power Dissipation Capacitance VCCA 2.5V, VCCB 3.3V, VI 0V or VCCA/B 20 pF f www.fairchildsemi.com 10 MHz 6 74VCX164245 AC Loading and Waveforms FIGURE 1. AC Test Circuit 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; 1.8V r 0.15V tPZH, tPHZ GND FIGURE 2. Waveform for Inverting and Non-inverting Functions tR tF d 2.0 ns, 10% to 90% FIGURE 3. 3-STATE Output High Enable and Disable Times for Low Voltage Logic tR tF d 2.0 ns, 10% to 90% FIGURE 4. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic tR tF d 2.0 ns, 10% to 90% Symbol 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 7 www.fairchildsemi.com 74VCX164245 Physical Dimensions inches (millimeters) unless otherwise noted 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide Package Number BGA54A 8 www.fairchildsemi.com 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 74VCX164245 Low Voltage 16-Bit Dual Supply Translating Transceiver with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued)