Revised December 2005 NC7WBD3306 2-Bit Low Power Bus Switch with Level Shifting General Description The NC7WBD3306 is a 2-bit ultra high-speed CMOS FET bus switch with enhanced level shifting circuitry and with TTL-compatible active LOW control inputs. The low On Resistance of the switch allows inputs to be connected to outputs with minimal propagation delay and without generating additional ground bounce noise. The device is organized as a 2-bit switch with independent bus enable (OE) controls. When OE is LOW, the switch is ON and Port A is connected to Port B. When OE is HIGH, the switch is OPEN and a high-impedance state exists between the two ports. Reduced voltage drive to the gate of the FET switch permits nominal level shifting of 5V to 3V through the switch. Control inputs tolerate voltages up to 5.5V independent of VCC. Features O Space saving US8 surface mount package O MicroPak¥ Pb-Free leadless package O Typical 3: switch resistance at 5.0V VCC, VIN O Level shift facilitates 5V to 3.3V interfacing O Minimal propagation delay through the switch O Power down high impedance input/output O Zero bounce in flow through mode O TTL compatible active LOW control inputs O Control inputs are overvoltage tolerant 0V Ordering Code: Order Number Product Package Code Number Top Mark NC7WBD3306K8X MAB08A WB6D NC7WBD3306L8X (Preliminary) MAC08A P7 Package Description Supplied As 8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3k Units on Tape and Reel Pb-Free 8-Lead MicroPak, 1.6 mm Wide 5k Units on Tape and Reel Pb-Free package per JEDEC J-STD-020B. MicroPak¥ is a trademark of Fairchild Semiconductor Corporation. © 2005 Fairchild Semiconductor Corporation DS500375 www.fairchildsemi.com NC7WBD3306 2-Bit Low Power Bus Switch with Level Shifting May 2000 NC7WBD3306 Logic Diagram Connection Diagrams (Top View) Pin Descriptions Pin One Orientation Diagram Pin Name Description A Bus A Switch I/O B Bus B Switch I/O OE Bus Enable Input Function Table Bus Enable Input (OE) Function L B Connected to A H Disconnected AAA represents Product Code Top Mark - see ordering code Note: Orientation of Top Mark determines Pin One location. Read the top product code mark left to right, Pin One is the lower left pin (see diagram). Pad Assignments for MicroPak H HIGH Logic Level L LOW Logic Level (Top Through View) www.fairchildsemi.com 2 Recommended Operating Conditions (Note 3) 0.5V to 7.0V 0.5V to 7.0V 0.5V to 7.0V Supply Voltage (VCC) DC Switch Voltage (VS) DC Output Voltage (VIN) (Note 2) DC Input Diode Current (IIK) VIN 0V Supply Operating (VCC) 50 mA DC Output (IOUT) Sink Current DC VCC or Ground Current (ICC/IGND) Storage Temperature Range (TSTG) Control Input 0 ns/V to 5 ns Switch I/O 0 ns/V to DC Thermal Resistance (TJA) 250qC/W Note 1: 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. 260qC (Soldering, 10 Seconds) Power Dissipation (PD) @ 85qC 0V to 5.5V 40qC to 85qC Input Rise and Fall Time (tr, tf) 150qC Junction Lead Temperature (TL) 0V to 5.5V Operating Temperature (TA) r100 mA 65qC to 150qC under Bias (TJ) 0V to 5.5V Switch Input Voltage (VIN) Switch Output Voltage (VOUT) 128 mA Junction Temperature 4.5V to 5.5V Control Input Voltage (VIN) 250 mW Note 2: The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. Note 3: Unused logic inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol Parameter VCC (V) TA Min 40qC to 85qC Typ Units 1.2 Clamp Diode Voltage VIH HIGH Level Input Voltage 4.5 to 5.5 VIL LOW Level Input Voltage 4.5 to 5.5 VOH HIGH Level Output Voltage 4.5 to 5.5 IIN Input Leakage Current 5.5 IOFF Power OFF Leakage Current 5.5 RON Switch On Resistance 4.5 3.0 7.0 (Note 4) 4.5 3.0 7.0 4.5 15.0 50.0 ICC Quiescent Supply Current 4.5 2.0 Increase in ICC per Input (Note 5) V IIN 18 mA V 0.8 V r1.0 r1.0 PA PA see Figure 3 V : 5.5 1.1 ' ICC Conditions Max VIK 5.5 1.0 1.5 mA 10.0 PA 2.5 mA VIN VCC 0 d VIN d 5.5V 0 d A, B d VCC VIN 0V, IIN 64 mA VIN 0V, IIN 30 mA VIN 2.4V, IIN VIN VCC or GND, IOUT OE1 OE1 VIN 15 mA OE2 GND OE2 VCC 3.4V, IO 0 0, one Control Input Only, Other OE VCC Note 4: Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the voltages on the two (A or B) pins. Note 5: Per TTL driven input (VIN 3.4V, control input only). A and B pins do not contribute to ICC. 3 www.fairchildsemi.com NC7WBD3306 Absolute Maximum Ratings(Note 1) NC7WBD3306 AC Electrical Characteristics TA Symbol Parameter tPHL, Propagation Delay Bus to Bus tPLH (Note 6) tPZL, Output Enable Time VCC CL (V) Min 40qC to 85qC, 50 pF, RU RD Typ 1.0 Units 3.5 Output Disable Time 4.5 to 5.5 0.8 3.5 Figure Number 0.25 ns VI OPEN Figures 1, 2 5.8 ns VI 7V for tPZL VI 0V for tPZH Figures 1, 2 VI 7V for tPLZ VI 0V for tPHZ tPZH tPLZ, Conditions Max 4.5 to 5.5 4.5 to 5.5 500: 4.8 ns tPHZ Figures 1Figure 2 Note 6: This parameter is guaranteed. The bus switch contributes no propagation delay other than the RC delay of the typical On Resistance of the switch and the 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance). The specified limit is calculated on this basis. Capacitance Symbol CIN Parameter Typ Control Pin Input Capacitance 2.5 Max Units pF Conditions VCC 0V CI/O (OFF) Port OFF Capacitance 6.0 pF VCC 5.0V CI/O (ON) Port ON Capacitance 12.0 pF VCC 5.0V, OE AC Loading and Waveforms Input driven by 50: source terminated in 50: CL includes load and stray capacitance Input PRR 1.0 MHz; tW FIGURE 1. AC Test Circuit FIGURE 2. AC Waveforms www.fairchildsemi.com 4 500 ns OE 0V NC7WBD3306 DC Characteristics FIGURE 3. Typical High Level Output Voltage vs. Supply Voltage 5 www.fairchildsemi.com NC7WBD3306 Tape and Reel Specification TAPE FORMAT for US8 Package Designator K8X Tape Section Number Cavities Cavity Status Cover Tape Status Leader (Start End) 125 (typ) Empty Sealed Carrier 250 Filled Sealed Trailer (Hub End) 75 (typ) Empty Sealed Tape Section Number Cavities Cavity Status Cover Tape Status Leader (Start End) 125 (typ) Empty Sealed Carrier 250 Filled Sealed Trailer (Hub End) 75 (typ) Empty Sealed TAPE DIMENSIONS inches (millimeters) TAPE FORMAT for MicroPak Package Designator L8X TAPE DIMENSIONS inches (millimeters) www.fairchildsemi.com 6 NC7WBD3306 REEL DIMENSIONS inches (millimeters) Tape Size 8 mm A B C D N 7.0 0.059 0.512 0.795 2.165 (177.8) (1.50) (13.00) (20.20) (55.00) 7 W1 W2 (8.40 1.50/0.00) (14.40) 0.331 0.059/0.000 0.567 W3 W1 0.078/0.039 (W1 2.00/1.00) www.fairchildsemi.com NC7WBD3306 Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide Package Number MAB08A www.fairchildsemi.com 8 NC7WBD3306 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Pb-Free 8-Lead MicroPak, 1.6 mm Wide Package Number MAC08A 9 www.fairchildsemi.com NC7WBD3306 2-Bit Low Power Bus Switch with Level Shifting DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. 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 FAIRCHILD SEMICONDUCTOR CORPORATION As used herein: provided in the labeling, can be reasonably expected to result in significant injury to the user. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or 2. A critical component is any component of a life support (b) support or sustain life, or (c) whose failure to perform device or system whose failure to perform can be reasonwhen properly used in accordance with instructions for use ably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. PRODUCT STATUS DEFINITIONS Definition of terms Datasheet Identification Product Status Definition Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary First Production This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. www.fairchildsemi.com 10