NC7WB3306_05

NC7WB3306 2-Bit Low Power Bus Switch May 2000 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: Product Package Code Number Top Mark MAB08A MAC08A WB06 U3 Order Number NC7WB3306K8X NC7WB3306L8X 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 Logic Symbol Connection Diagrams (Top View) Pin Descriptions Pin Name A B OE Pin One Orientation Diagram Description Bus A Bus B Bus Enable Input Function Table Bus Enable Input OE L H H HIGH Logic Level L LOW Logic Level 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). Function B Connected to A Disconnected Pad Assignments for MicroPak (Top Through View) www.fairchildsemi.com 2 NC7WB3306 Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) DC Switch Voltage (VS) DC Output Voltage (VIN) (Note 2) DC Input Diode Current (IIK) VIN  0V DC Output (IOUT) Current DC VCC or Ground Current (ICC/GND) Storage Temperature Range (TSTG) Junction Lead Temperature under Bias (TJ) Lead Temperature (TL) Power Dissipation (PD) @ 85qC (Soldering, 10 seconds) 0.5V to 7.0V 0.5V to 7.0V 0.5V to 7.0V 50 mA r100 mA 65qC to 150qC 150qC 260qC 250 mW 128 mA Recommended Operating Conditions (Note 3) Supply Operating (VCC) Control Input Voltage (VIN) Switch Input Voltage (VIN) Output Voltage (VOUT) Operating Temperature (TA) Input Rise and Fall Time (tr, tf) Control Input Thermal Resistance (TJA) Switch I/O 0 ns/V to 5 ns/V 0 ns/V to DC 250qC/W 4.0V to 5.5V 0V to 5.5V 0V to 5.5V 0V to 5.5V 40qC to 85qC 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 VIK VIH VIL VOH IIN IOFF RON Parameter Clamp Diode Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage Input Leakage Current Switch OFF Leakage Current Switch On Resistance (Note 4) VCC (V) 4.5 4.0 to 5.5 4.0 to 5.5 4.5 to 5.5 5.5 5.5 4.5 4.5 4.5 4.0 ICC Quiescent Supply Current Increase in ICC per Input (Note 5) 5.5 5.5 1.0 3.0 3.0 6.0 10.0 see Figure 3 2.0 0.8 Min TA 40qC to 85qC Typ Max Units Conditions IIN 1.2 V V V V 18 mA r1.0 r1.0 7.0 7.0 15.0 20.0 3.0 2.5 PA PA : PA mA VIN 0 d VIN d 5.5V VIN VIN 0V, IIN 0V, IIN 2.4V, IIN 2.4V, IIN 0 3.4V, IO VCC 0 d A, B, d VCC 64 mA 30 mA 15 mA 15 mA VIN VIN VIN IOUT VIN VCC or GND, 0, 'ICC 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 AC Electrical Characteristics TA Symbol Parameter VCC (V) tPHL, tPLH tPZL, tPZH tPLZ, tPHZ Output Disable Time Propagation Delay Bus-to-Bus (Note 6) Output Enable Time 4.5 to 5.5 4.0 4.5 to 5.5 4.0 0.8 0.8 0.8 0.8 2.5 3.0 3.1 2.9 4.2 4.6 4.8 4.4 ns ns VI VI VI VI 7V for tPZL 0V for tPZH 7V for tPLZ 0V for tPHZ 4.0 to 5.5 CL Min 40qC to 85qC RD Typ 50 pF, RU 500: Max 0.25 Units Conditions Figure Number ns VI OPEN Figures 1, 2 Figures 1, 2 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 CI/O (OFF) CI/O (ON) Parameter Control Pin Input Capacitance Port OFF Capacitance Switch ON Capacitance Typ 2.5 6.0 12.0 Max Units pF pF pF VCC VCC VCC 0V 5.0V OE 0V Conditions 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 500 ns. FIGURE 1. AC Test Circuit FIGURE 2. AC Waveforms www.fairchildsemi.com 4 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 Leader (Start End) Carrier Trailer (Hub End) Number Cavities 125 (typ) 250 75 (typ) Cavity Status Empty Filled Empty Cover Tape Status Sealed Sealed Sealed TAPE DIMENSIONS inches (millimeters) TAPE FORMAT for MicroPak Package Designator L8X Tape Section Leader (Start End) Carrier Trailer (Hub End) Number Cavities 125 (typ) 250 75 (typ) Cavity Status Empty Filled Empty Cover Tape Status Sealed Sealed Sealed TAPE DIMENSIONS inches (millimeters) www.fairchildsemi.com 6 NC7WB3306 REEL DIMENSIONS inches (millimeters) Tape Size 8 mm A 7.0 (177.8) B 0.059 (1.50) C 0.512 (13.00) D 0.795 (20.20) N 2.165 (55.00) 0.331  0.059/0.000 (8.40  1.50/0.00) W1 W2 0.567 (14.40) W1  0.078/0.039 (W1  2.00/1.00) W3 7 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 Advance Information Preliminary Formative or In Design First Production Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. 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. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains specifications on a product that has been discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. No Identification Needed Full Production Obsolete Not In Production www.fairchildsemi.com 10