Revised October 2004 74VCXR162601 Low Voltage 18-Bit Universal Bus Transceivers with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in the Outputs General Description Features The VCXR162601, 18-bit universal bus transceiver, combines D-type latches and D-type flip-flops to allow data flow in transparent, latched, and clocked modes. ■ 3.6V tolerant inputs and outputs Data flow in each direction is controlled by output-enable (OEAB and OEBA), latch-enable (LEAB and LEBA), and clock (CLKAB and CLKBA) inputs. The clock can be controlled by the clock-enable (CLKENAB and CLKENBA) inputs. For A-to-B data flow, the device operates in the transparent mode when LEAB is HIGH. When LEAB is LOW, the A data is latched if CLKAB is held at a HIGH-toLOW logic level. If LEAB is LOW, the A bus data is stored in the latch/flip-flop on the LOW-to-HIGH transition of CLKAB. Output-enable OEAB is active-LOW. When OEAB is HIGH, the outputs are in the high-impedance state. Data flow for B to A is similar to that of A to B but uses OEBA, LEBA, CLKBA and CLKENBA. The 74VCXR162601 is designed for low voltage (1.4V to 3.6V) VCC applications with I/O compatibility up to 3.6V. The VCXR162601 is also designed with 26Ω series resistors on both the A and B Port outputs. This design reduces line noise in applications such as memory address drivers, clock drivers, and bus transceivers/transmitters. ■ 1.4V to 3.6V VCC supply operation ■ 26Ω series resistors on both the A and B Port outputs. ■ tPD (A to B, B to A) 3.8 ns max for 3.0V to 3.6V VCC ■ Power-down HIGH impedance inputs and outputs ■ Supports live insertion/withdrawal (Note 1) ■ Static Drive (IOH/IOL) ±12 mA @ 3.0V VCC ■ Uses patented noise/EMI reduction circuitry ■ Latchup performance exceeds 300 mA ■ ESD performance: Human body model > 2000V Machine model >200V Note 1: To ensure the high-impedance state during power up or power down, OE 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 74VCXR162601MTD Package Package Description Number MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. © 2004 Fairchild Semiconductor Corporation DS500171 www.fairchildsemi.com 74VCXR162601 Low Voltage 18-Bit Universal Bus Transceivers with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in the Outputs August 1998 74VCXR162601 Connection Diagram Pin Descriptions Pin Names Description OEAB, OEBA Output Enable Inputs (Active LOW) LEAB, LEBA Latch Enable Inputs CLKAB, CLKBA Clock Inputs CLKENAB, CLKENBA Clock Enable Inputs A1–A18 Side A Inputs or 3-STATE Outputs B1–B18 Side B Inputs or 3-STATE Outputs Function Table (Note 2) Inputs Outputs LEAB CLKAB An Bn X H X X X Z X L H X L L CLKENAB OEAB X L H X H H H L L X X B0 (Note 3) H L L X X B0 (Note 3) L L L ↑ L L L L L ↑ H H L L L L X B0 (Note 3) L L L H X B0 (Note 4) H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial (HIGH or LOW, inputs may not float) Z = HIGH Impedance Note 2: A-to-B data flow is shown; B-to-A flow is similar but uses OEBA, LEBA, CLKBA, and CLKENBA. Note 3: Output level before the indicated steady-state input conditions were established Note 4: Output level before the indicated steady-state input conditions were established, provided that CLKAB was HIGH before LEAB went LOW. Logic Diagram www.fairchildsemi.com 2 Recommended Operating Conditions (Note 7) Supply Voltage (VCC) −0.5V to +4.6V DC Input Voltage (VI) −0.5V to +4.6V Power Supply Operating 1.4V to 3.6V −0.5V to +4.6V Input Voltage −0.3V to 3.6V Output Voltage (VO) Outputs 3-STATED Outputs Active (Note 6) −0.5 to VCC + 0.5V DC Input Diode Current (IIK) VI < 0V Output Voltage (VO) −50 mA Output in Active States DC Output Diode Current (IOK) VO < 0V −50 mA VO > VCC +50 mA ±50 mA (IOH/IOL) 0.0V to 3.6V Output Current in IOH/IOL DC Output Source/Sink Current VCC = 3.0V to 3.6V ±12 mA VCC = 2.3V to 2.7V ±8 mA VCC =1.65V to 2.3V ±3 mA VCC = 1.4V to 1.6V DC VCC or Ground Current per ±100 mA Supply Pin (ICC or Ground) Storage Temperature Range (TSTG) 0V to VCC Output in 3-STATE ±1 mA Free Air Operating Temperature (TA) −65°C to +150°C −40°C to +85°C 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 tables will define the conditions for actual device operation. Note 6: IO Absolute Maximum Rating must be observed. Note 7: Floating or unused pin (inputs or I/O's) must be held HIGH or LOW. DC Electrical Characteristics Symbol VIH VIL Parameter Conditions HIGH Level Input Voltage LOW Level Input Voltage VCC (V) Min 2.7 - 3.6 2.0 2.3 - 2.7 1.6 1.65 - 2.3 0.65 x VCC 1.4 - 1.6 0.65 x VCC HIGH Level Output Voltage IOH = −100 µA 0.8 2.3 - 2.7 0.7 1.65 - 2.3 0.35 x VCC VCC - 0.2 IOH = −6 mA 2.7 2.2 IOH = −8 mA 3.0 2.4 IOH = −12 mA 3.0 2.2 IOH = −100 µA 2.3 - 2.7 VCC - 0.2 IOH = −4 mA 2.3 2.0 IOH = −6 mA 2.3 1.8 IOH = −100 µA IOH = −3 mA IOH = −100 µA IOH = −1 mA 3 V 0.35 x VCC 2.7 - 3.6 IOH = −8 mA Units V 2.7 - 3.6 1.4 - 1.6 VOH Max 2.3 1.7 1.65 - 2.3 VCC - 0.2 1.65 1.25 1.4 - 1.6 VCC - 0.2 1.4 1.05 V www.fairchildsemi.com 74VCXR162601 Absolute Maximum Ratings(Note 5) 74VCXR162601 DC Electrical Characteristics Symbol (Continued) Parameter Conditions VCC Min Max Units (V) VOL LOW Level Output Voltage IOL = 100 µA 2.7 - 3.6 0.2 IOL = 6 mA 2.7 0.4 IOL = 8 mA 3.0 0.55 IOL = 12 mA 3.0 0.8 IOL = 100 µA 2.3 - 2.7 0.2 IOL = 6 mA 2.3 0.4 IOL = 8 mA 2.3 0.6 IOL = 100 µA IOL = 3 mA IOL = 100 µA IOL = 1 mA 1.65 - 2.3 0.2 1.65 0.3 1.4 - 1.6 0.2 1.4 0.35 1.4 - 3.6 ±5.0 µA 1.4 - 3.6 ±10.0 µA 0 10.0 µA II Input Leakage Current 0 ≤ VI ≤ 3.6V IOZ 3-STATE Output Leakage 0 ≤ VO ≤ 3.6V IOFF Power-OFF Leakage Current 0 ≤ (VI, VO) ≤ 3.6V ICC Quiescent Supply Current VI = VCC or GND 1.4 - 3.6 20.0 VCC ≤ (VI, VO) ≤ 3.6V (Note 8) 1.4 - 3.6 ±20.0 VIH = VCC - 0.6V 2.7 - 3.6 750 VI = VIH or VIL ∆ICC Increase in ICC per Input Note 8: Outputs disabled or 3-STATE only. www.fairchildsemi.com 4 V µA µA Symbol fMAX Parameter Maximum Clock Frequency tPHL Propagation Delay tPLH A to B or B to A tPHL Propagation Delay tPLH Clock to A or B tPHL Propagation Delay tPLH LEBA or LEAB to A or B Conditions CL = 30 pF tPZL Output Enable Time OEBA or OEAB to A or B Output Disable Time tPHZ OEBA or OEAB to A or B tS tH tW Setup Time Hold Time Pulse Width tOSHL Output to Output Skew tOSLH (Note 10) Min 3.3 ± 0.3 250 Max 200 1.8 ± 0.15 100 CL = 15 pF 1.5 ± 0.1 80.0 CL = 30 pF, RL = 500Ω 3.3 ± 0.3 0.6 2.5 ± 0.2 0.8 4.6 1.8 ± 0.15 1.5 9.2 CL = 15 pF, RL = 2kΩ 1.5 ± 0.1 1.0 18.4 CL = 30 pF, RL = 500Ω 3.3 ± 0.3 0.6 4.4 2.5 ± 0.2 0.8 5.5 1.8 ± 0.15 1.5 9.8 CL = 15 pF, RL = 500Ω 1.5 ± 0.1 1.0 19.6 CL = 30 pF, RL = 500Ω 3.3 ± 0.3 0.6 4.4 2.5 ± 0.2 0.8 5.8 1.8 ± 0.15 1.5 9.8 1.5 ± 0.1 1.0 19.6 3.3 ± 0.3 0.6 4.3 2.5 ± 0.2 0.8 5.9 CL = 30 pF, RL = 500Ω CL = 15 pF, RL = 2kΩ tPLZ TA = −40°C to +85°C (V) 2.5 ± 0.2 CL = 15 pF, RL = 500Ω tPZH VCC CL = 30 pF, RL = 500Ω Figure Number MHz 3.8 1.8 ± 0.15 1.5 9.8 1.5 ± 0.1 1.0 19.6 4.3 3.3 ± 0.3 0.6 2.5 ± 0.2 0.8 4.9 1.8 ± 0.15 1.5 8.8 CL = 15 pF, RL = 2kΩ 1.5 ± 0.1 1.0 17.6 CL = 30 pF, RL = 500Ω 3.3 ± 0.3 1.5 2.5 ± 0.2 1.5 1.8 ± 0.15 2.5 CL = 15 pF, RL = 500Ω 1.5 ± 0.1 3.0 CL = 30 pF, RL = 500Ω 3.3 ± 0.3 1.0 2.5 ± 0.2 1.0 1.8 ± 0.15 1.0 CL = 15 pF, RL = 500Ω 1.5 ± 0.1 2.0 CL = 30 pF, RL = 500Ω 3.3 ± 0.3 1.5 2.5 ± 0.2 1.5 1.8 ± 0.15 4.0 CL = 15 pF, RL = 500Ω 1.5 ± 0.1 4.0 CL = 30 pF, RL = 500Ω 3.3 ± 0.3 CL = 15 pF, RL = 2kΩ Units ns Figures 1, 2 Figures 7, 8 ns Figures 1, 2 Figures 7, 8 ns Figures 1, 2 Figures 7, 8 ns Figures 1, 3, 4 Figures 7, 9, 10 ns Figures 1, 3, 4 Figures 7, 9, 10 ns Figure 6 ns Figure 6 ns Figure 5 0.5 2.5 ± 0.2 0.5 1.8 ± 0.15 0.75 1.5 ± 0.1 1.5 ns Note 9: For CL = 50 pF, 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). 5 www.fairchildsemi.com 74VCXR162601 AC Electrical Characteristics 74VCXR162601 Dynamic Switching Characteristics Symbol VOLP Parameter Quiet Output Dynamic Conditions CL = 30 pF, VIH = VCC, VIL = 0V Peak VOL VOLV Quiet Output Dynamic CL = 30 pF, VIH = VCC, VIL = 0V Valley VOL VOHV Quiet Output Dynamic CL = 30 pF, VIH = VCC, VIL = 0V Valley VOH VCC TA = +25°C (V) Typical 1.8 0.15 2.5 0.25 3.3 0.35 1.8 −0.15 2.5 −1.25 3.3 −0.35 1.8 1.5 2.5 2.05 3.3 2.65 Units V V V Capacitance Symbol CIN Parameter Input Capacitance Conditions VCC = 1.8V, 2.5V, or 3.3V, VI = 0V or VCC CI/O Output Capacitance VI = 0V, or VCC, VCC = 1.8V, 2.5V or 3.3V CPD Power Dissipation Capacitance VI = 0V or VCC, f = 10 MHz VCC = 1.8V, 2.5V or 3.3V www.fairchildsemi.com 6 TA = +25°C Units 6.0 pF 7.0 pF 20.0 pF 74VCXR162601 AC Loading and Waveforms (VCC 3.3V ± 0.3V to 1.8V ± 0.15V) TEST SWITCH tPLH, tPHL Open tPZL, tPLZ 6V at VCC = 3.3V ± 0.3V; VCC x 2 at VCC = 2.5V ± 0.2V; 1.8V ± 0.15V tPZH, tPHZ GND FIGURE 1. AC Test Circuit FIGURE 3. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic FIGURE 2. Waveform for Inverting and Non-inverting Functions FIGURE 4. 3-STATE Output High Enable and Disable Times for Low Voltage Logic FIGURE 5. Propagation Delay, Pulse Width and trec Waveforms Symbol FIGURE 6. Setup Time, Hold Time and Recovery Time for Low Voltage Logic VCC 3.3V ± 0.3V 2.5V ± 0.2V 1.8V ± 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 74VCXR162601 AC Loading and Waveforms (VCC 1.5V ± 0.1V) TEST SWITCH tPLH, tPHL Open tPZL, tPLZ VCC x 2 at VCC = 1.5V ± 0.1V tPZH, tPHZ GND FIGURE 7. AC Test Circuit FIGURE 8. Waveform for Inverting and Non-inverting Functions FIGURE 9. 3-STATE Output High Enable and Disable Times for Low Voltage Logic FIGURE 10. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic VCC Symbol 1.5V ± 0.1V Vmi www.fairchildsemi.com VCC/2 Vmo VCC/2 VX VOL + 0.1V VY VOH − 0.1V 8 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Package Number MTD56 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 74VCXR162601 Low Voltage 18-Bit Universal Bus Transceivers with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in the Outputs Physical Dimensions inches (millimeters) unless otherwise noted