Revised December 2005 NC7WB3306 2-Bit Low Power Bus Switch General Description The NC7WB3306 is a 2-bit ultra high-speed CMOS FET bus switch 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 2bit 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. 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 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 Ordering Code: Order Number Product Package Code Number Top Mark NC7WB3306K8X MAB08A WB06 NC7WB3306L8X MAC08A U3 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 DS500377 www.fairchildsemi.com NC7WB3306 2-Bit Low Power Bus Switch May 2000 NC7WB3306 Logic Symbol Connection Diagrams (Top View) Pin Descriptions Pin One Orientation Diagram Pin Name Description A Bus A B Bus B OE Bus Enable Input Function Table 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). Bus Enable Input OE Function L B Connected to A H Disconnected 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) Current 128 mA DC VCC or Ground Current (ICC/GND) Storage Temperature Range (TSTG) Junction Lead Temperature under Bias (TJ) Power Dissipation (PD) @ 85qC 0V to 5.5V Output Voltage (VOUT) 0V to 5.5V 40qC to 85qC Input Rise and Fall Time (tr, tf) Control Input 0 ns/V to 5 ns/V Switch I/O 0 ns/V to DC Thermal Resistance (TJA) 260qC (Soldering, 10 seconds) 0V to 5.5V Switch Input Voltage (VIN) Operating Temperature (TA) r100 mA 65qC to 150qC 150qC Lead Temperature (TL) 4.0V to 5.5V Control Input Voltage (VIN) 250qC/W 250 mW 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. 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 4.5 Conditions Max Clamp Diode Voltage VIH HIGH Level Input Voltage 4.0 to 5.5 VIL LOW Level Input Voltage 4.0 to 5.5 VOH HIGH Level Output Voltage 4.5 to 5.5 IIN Input Leakage Current 5.5 IOFF Switch OFF Leakage Current 5.5 RON Switch On Resistance 4.5 3.0 7.0 VIN 0V, IIN 64 mA (Note 4) 4.5 3.0 7.0 VIN 0V, IIN 30 mA 4.5 6.0 15.0 VIN 2.4V, IIN 15 mA 4.0 10.0 20.0 VIN 2.4V, IIN 15 mA VCC or GND, ICC Quiescent Supply Current 5.5 'ICC Increase in ICC per Input 5.5 2.0 V IIN 18 mA VIK V 0.8 V r1.0 r1.0 PA PA see Figure 3 V : VIN 0 d A, B, d VCC 3.0 PA VIN 2.5 mA VIN IOUT 1.0 (Note 5) VCC 0 d VIN d 5.5V 0 3.4V, IO 0, Control Input Only 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 NC7WB3306 Absolute Maximum Ratings(Note 1) NC7WB3306 AC Electrical Characteristics TA Symbol Parameter tPHL, Propagation Delay Bus-to-Bus tPLH (Note 6) tPZL, Output Enable Time Output Disable Time CL (V) Min 40qC to 85qC 50 pF, RU RD 500: Typ Conditions 0.8 2.5 4.2 4.0 0.8 3.0 4.6 4.5 to 5.5 0.8 3.1 4.8 4.0 0.8 2.9 4.4 Figure Number 0.25 4.5 to 5.5 tPHZ Units Max 4.0 to 5.5 tPZH tPLZ, VCC ns ns ns VI OPEN Figures 1, 2 Figures 1, 2 VI 7V for tPZL VI 0V for tPZH VI 7V for tPLZ VI 0V for 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 Parameter CIN Control Pin Input Capacitance CI/O (OFF) Port OFF Capacitance CI/O (ON) Switch ON Capacitance Typ Max Units 2.5 Conditions pF VCC 0V 6.0 pF VCC 5.0V 12.0 pF VCC 5.0V, OE 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. 0V NC7WB3306 DC Characteristics FIGURE 3. Typical High Level Output Voltage vs. Supply Voltage 5 www.fairchildsemi.com NC7WB3306 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 NC7WB3306 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) W1 W2 (8.40 1.50/0.00) (14.40) 0.331 0.059/0.000 7 0.567 W3 W1 0.078/0.039 (W1 2.00/1.00) www.fairchildsemi.com NC7WB3306 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 NC7WB3306 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Pb-Free 8-Lead MicroPak, 1.6 mm Wide Package Number MAC08A 9 www.fairchildsemi.com NC7WB3306 2-Bit Low Power Bus Switch 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