Revised April 1999 74VCX162601 Low Voltage 18-Bit Universal Bus Transceivers with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in the B-Port Outputs General Description Features The VCX162601, 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 74VCX162601 is designed for low voltage (1.65V to 3.6V) VCC applications with I/O compatibility up to 3.6V. The VCX162601 is also designed with 26Ω series resistors in the B-Port outputs. This design reduces line noise in applications such as memory address drivers, clock drivers, and bus transceivers/transmitters. ■ 1.65V–3.6V VCC supply operation ■ 26Ω series resistors in B-Port outputs ■ tPD (A to B) 3.8 ns max for 3.0V to 3.6V VCC 4.6 ns max for 2.3V to 2.7V VCC 9.2 ns max for 1.65V to 1.95V VCC ■ Power-down high impedance inputs and outputs ■ Supports live insertion/withdrawal (Note 1) ■ Static Drive (IOH/IOL B outputs) ±12 mA @ 3.0V VCC ±8 mA @ 2.3V VCC ±3 mA @ 1.65V 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 Package Number Package Description 74VCX162601MTD 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. 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 © 1999 Fairchild Semiconductor Corporation DS500150.prf www.fairchildsemi.com 74VCX162601 Low Voltage 18-Bit Universal Bus Transceivers with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in the B-Port Outputs April 1998 74VCX162601 Connection Diagram Function Table (Note 2) Inputs Outputs CLKENAB OEAB LEAB CLKAB An Bn X Z X H X X X L H X L L 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 Supply Voltage (VCC) −0.5V to +4.6V DC Input Voltage (VI) −0.5V to +4.6V Output Voltage (VO) Output in Active States −0.5 to VCC + 0.5V DC Input Diode Current (IIK) VI < 0V −50 mA DC Output Diode Current (IOK) VO < 0V −50 mA VO > VCC +50 mA ±8 mA VCC = 1.65V to 1.95V ±3 mA VCC = 3.0V to 3.6V ±24 mA VCC = 2.3V to 2.7V ±18 mA ±6 mA Free Air Operating Temperature (TA) DC VCC or Ground Current per Storage Temperature Range (TSTG) ±12 mA VCC = 2.3V to 2.7V VCC = 1.65V to 2.3V ±50 mA −40°C to +85°C Minimum Input Edge Rate (∆t/∆V) ±100 mA Supply Pin (ICC or Ground) VCC = 3.0V to 3.6V Output Current in ±IOH/IOL A Outputs DC Output Source/Sink Current (IOH/IOL) 0.0V to 3.6V Output Current in IOH/IOL B Outputs −0.5V to +4.6V Outputs Active (Note 6) 0V to VCC Output in 3-STATE Output Voltage (VO) Outputs 3-State −0.3V to 3.6V Input Voltage VIN = 0.8V to 2.0V, VCC = 3.0V −65°C to +150°C 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. Recommended Operating Conditions (Note 7) Power Supply Note 6: IO Absolute Maximum Rating must be observed. Operating 1.65V to 3.6V Data Retention Only Note 7: Floating or unused pin (inputs or I/O's) must be held HIGH or LOW. 1.2V to 3.6V DC Electrical Characteristics (2.7V < VCC ≤ 3.6V) Symbol Parameter Conditions VCC (V) VIH HIGH Level Input Voltage 2.7 − 3.6 VIL LOW Level Input Voltage 2.7 − 3.6 VOH HIGH Level Output Voltage Max 2.0 2.7 − 3.6 VCC − 0.2 2.2 Units V 0.8 IOH = −6 mA 2.7 IOH = −8 mA 3.0 2.4 IOH = −12 mA 3.0 2.2 HIGH Level Output Voltage IOH = −100 µA 2.7 − 3.6 VCC − 0.2 A Outputs IOH = −12 mA 2.7 2.2 IOH = −18 mA 3.0 2.4 IOH = −24 mA 3.0 2.2 LOW Level Output Voltage IOL = 100 µA 2.7 − 3.6 B Outputs IOL = 6 mA 2.7 0.4 IOL = 8 mA 3.0 0.55 IOL = 12 mA 3.0 0.8 LOW Level Output Voltage IOL = 100 µA 2.7 − 3.6 0.2 A Outputs IOL = 12 mA 2.7 0.4 IOL = 18 mA 3.0 0.4 IOL = 24 mA 3.0 0.55 B Outputs VOL IOH = −100 µA Min V V V 0.2 V V II Input Leakage Current 0V ≤ VI ≤ 3.6V 2.7 − 3.6 ±5.0 µA IOZ 3-STATE Output Leakage 0V ≤ VO ≤ 3.6V 2.7 − 3.6 ±10 µA µA VI = V IH or VIL IOFF Power Off Leakage Current 0V ≤ (VI, VO) ≤ 3.6V 0 10 ICC Quiescent Supply Current VI = V CC or GND 2.7 − 3.6 20 VCC ≤ (VI, VO) ≤ 3.6V (Note 8) 2.7 − 3.6 ±20 VIH = VCC − 0.6V 2.7 − 3.6 750 ∆ICC Increase in ICC per Input µA µA Note 8: Outputs disabled or 3-STATE only. 3 www.fairchildsemi.com 74VCX162601 Absolute Maximum Ratings(Note 5) 74VCX162601 DC Electrical Characteristics (2.3V ≤ VCC ≤ 2.7V) Symbol Parameter VCC Conditions (V) VIH HIGH Level Input Voltage 2.3 − 2.7 VIL LOW Level Input Voltage 2.3 − 2.7 VOH HIGH Level Output Voltage IOH = −100 µA B Outputs VOL Min Max 1.6 V 0.7 2.3 − 2.7 VCC − 0.2 IOH = −4 mA 2.3 2.0 IOH = −6 mA 2.3 1.8 IOH = −8 mA 2.3 1.7 2.3 − 2.7 VCC − 0.2 Units V V HIGH Level Output Voltage IOH = − 100µA A Outputs IOH = −6 mA 2.3 2.0 IOH = −12 mA 2.3 1.8 IOH = −18 mA 2.3 1.7 LOW Level Output Voltage IOL = 100 µA 2.3 − 2.7 0.2 B Outputs IOL = 6 mA 2.3 0.4 IOL = 8 mA 2.3 0.6 V LOW Level Output Voltage IOL = 100 µA 2.3 − 2.7 0.2 A Outputs IOL = 12 mA 2.3 0.4 IOL = 18 mA 2.3 0.6 V V II Input Leakage Current 0 ≤ VI ≤ 3.6V 2.3 − 2.7 ±5.0 µA IOZ 3-STATE Output Leakage 0 ≤ VO ≤ 3.6V 2.3 − 2.7 ±10 µA µA VI = VIH or VIL IOFF Power Off Leakage Current 0 ≤ (VI, VO) ≤ 3.6V 0 10 ICC Quiescent Supply Current VI = VCC or GND 2.3 − 2.7 20 VCC ≤ (VI, VO) ≤ 3.6V (Note 9) 2.3 − 2.7 ±20 µA Note 9: Outputs disabled or 3-STATE only. DC Electrical Characteristics (1.65V ≤ VCC < 2.3V) Symbol Parameter Conditions VCC (V) VIH HIGH Level Input Voltage 1.65 - 2.3 VIL LOW Level Input Voltage 1.65 - 2.3 VOH HIGH Level Output Voltage VOL IOH = −100 µA B Outputs IOH = −3 mA HIGH Level Output Voltage OH A Outputs 1.65 - 2.3 Min Max 0.65 × VCC V 0.35 × VCC VCC − 0.2 1.65 1.4 VCC − 0.2 IOH = −6 mA 1.65 1.25 LOW Level Output Voltage IOL = 100 µA 1.65 - 2.3 0.2 B Outputs IOL = 3 mA 1.65 0.3 LOW Level Output Voltage IOL = 100 µA A Outputs IOL = 6 mA V V 1.65 - 2.3 = −100 µA Units V 1.65 - 2.3 0.2 1.65 0.3 V V II Input Leakage Current 0 ≤ VI ≤ 3.6V 1.65 - 2.3 ±5.0 µA IOZ 3-STATE Output Leakage 0 ≤ VO ≤ 3.6V 1.65 - 2.3 ±10 µA µA VI = VIH or VIL IOFF Power Off Leakage Current 0 ≤ (VI, VO) ≤ 3.6V 0 10 ICC Quiescent Supply Current VI = VCC or GND 1.65 - 2.3 20 VCC ≤ (VI, VO) ≤ 3.6V (Note 10) 1.65 - 2.3 ±20 Note 10: Outputs disabled or 3-STATE only. www.fairchildsemi.com 4 µA TA = −40°C to +85°C, CL = 30 pF, RL = 500Ω Symbol Parameter VCC = 3.3V ± 0.3V Min Max VCC = 2.5 ± 0.2V Min Max 200 VCC = 1.8V ± 0.15V Min Units Max fMAX Maximum Clock Frequency 250 tPHL, tPLH Propagation Delay B to A 0.8 2.9 1.0 3.5 100 1.5 7.0 tPHL, tPLH Propagation Delay A to B 0.8 3.8 1.0 4.6 1.5 9.2 tPHL, tPLH Propagation Delay Clock to A 0.8 3.5 1.0 4.4 1.5 8.8 tPHL, tPLH Propagation Delay Clock to B 0.8 4.4 1.0 5.5 1.5 9.8 tPHL, tPLH Propagation Delay LEBA to A 0.8 3.5 1.0 4.4 1.5 8.8 tPHL, tPLH Propagation Delay LEAB to B 0.8 4.4 1.0 5.8 1.5 9.8 tPZL, tPZH Output Enable Time OEBA to A 0.8 3.8 1.0 4.9 1.5 9.8 tPZL, tPZH Output Enable Time OEAB to B 0.8 4.3 1.0 5.9 1.5 9.8 tPLZ, tPHZ Output Disable Time OEBA to A 0.8 3.7 1.0 4.2 1.5 7.6 tPLZ, tPHZ Output Disable Time OEAB to B 0.8 4.3 1.0 4.9 1.5 8.8 tS Setup Time 1.5 tH Hold Time 1.0 1.0 1.0 ns tW Pulse Width 1.5 1.5 4.0 ns tOSHL Output to Output tOSLH Skew (Note 12) 1.5 0.5 MHz 2.5 0.5 ns ns ns ns ns ns ns ns ns ns ns 0.75 ns Note 11: For CL = 50pF, add approximately 300ps to the AC maximum specification. Note 12: 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 74VCX162601 AC Electrical Characteristics (Note 11) 74VCX162601 Dynamic Switching Characteristics Symbol VOLP VOLP VOLV VOLV VOHV VOHV Parameter Conditions Quiet Output Dynamic Peak VOL, B to A CL = 30 pF, VIH = VCC, VIL = 0V Quiet Output Dynamic Peak VOL, A to B CL = 30 pF, VIH = VCC, VIL = 0V Quiet Output Dynamic Valley VOL, B to A CL = 30 pF, VIH = VCC, VIL = 0V Quiet Output Dynamic Valley VOL, A to B CL = 30 pF, VIH = VCC, VIL = 0V Quiet Output Dynamic Valley VOH, B to A CL = 30 pF, VIH = VCC, VIL = 0V Quiet Output Dynamic Valley VOH, A to B CL = 30 pF, VIH = VCC, VIL = 0V VCC (V) TA = +25°C Typical Units 1.8 2.5 3.3 0.25 0.6 0.8 V 1.8 2.5 3.3 0.15 0.25 0.35 V 1.8 2.5 3.3 −0.25 −0.6 −0.8 V 1.8 2.5 3.3 0.15 −0.25 −0.35 V 1.8 2.5 3.3 1.5 1.9 2.2 V 1.8 2.5 3.3 1.5 2.05 2.65 V TA = +25°C Units 6 pF 7 pF 20 pF Capacitance Symbol Parameter CIN Input Capacitance CI/O Output Capacitance CPD Power Dissipation Capacitance Conditions VCC = 1.8V, 2.5V, or 3.3V, VI = 0V or VCC VI = 0V, or VCC, VCC = 1.8V, 2.5V or 3.3V VI = 0V or VCC, f = 10 MHz VCC = 1.8V, 2.5V or 3.3V www.fairchildsemi.com 6 74VCX162601 AC Loading and Waveforms FIGURE 1. AC Test Circuit TEST SWITCH tPLH, tPHL Open tPZL, tPLZ 6V at VCC = 3.3 ± 0.3V; VCC x 2 at VCC = 2.5 ± 0.2V; 1.8V ± 0.15V tPZH, tPHZ 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 FIGURE 6. Setup Time, Hold Time and Recovery Time for Low Voltage Logic FIGURE 5. Propagation Delay, Pulse Width and trec Waveforms Symbol 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 74VCX162601 Low Voltage 18-Bit Universal Bus Transceivers with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in the B-Port Outputs Physical Dimensions inches (millimeters) unless otherwise noted 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Package Number MTD56 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 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. 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 www.fairchildsemi.com user. 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.