FAIRCHILD NC7WBD3125 2-Bit Low Power Bus Switch with Level Shifting handbook
Contents
1. 2X 0 10 C 0 8 B 16 LA 0 625 0 375 0 805 0 125 0 41 RS 1 6 p 0 125 NN Li lt INDEX AREA SS 1 2x 0 10 c i 0 4 8X TOP VIEW A x 0 55 MAX 0 25 8 0 05 C LL Recommended Landpattern 0 05 1 D i 0 00 Cc 0 05 C 1 0 H 8X 0 09 H 4 a 0 8 co Wt W et aoe H Ep4 0 35 7 BP 0 15 8X 0 25 025 8X To10 C AIB 3X 0 2 7 0 05 C BOTTOM VIEW Notes 1 PACKAGE CONFORMS TO JEDEC MO 255 VARIATION UAAD 2 DIMENSIONS ARE IN MILLIMETERS 3 DRAWING CONFORMS TO ASME Y 14M 1994 4 PIN 1 FLAG END OF PACKAGE OFFSET MACO8AREVC Pb Free 8 Lead MicroPak 1 6 mm Wide Package Number MAC08A www fairchildsemi com ScLEGEMZON ifting NC7WBD3125 2 Bit Low Power Bus Switch with Level Sh DISCLAIMER LIFE SUPPORT POLICY As used herein 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 or c whose failure to perform when properly used in accordance with instructions for use PRODUCT STATUS DEFINITIONS Definition of terms Advance Information Formative or In Design Preliminary First Production No Identification Needed Full Production Obsolete Not In Production FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY FUNCTION OR DESIGN FA2. www fairchildsemi com ScLEGEMZON NC7WBD3125 1 4 lAlo2lclela ALL LEAD TIPS PIN 1 IDENT ALL LEAD TIPS OJ0 1 C 0 90 MAX 4 ie 0 70 0 10 UE 1 Lg Le 0 17 0 27 0 50TYP 0130 a BO cO NOTES A CONFORMS TO JEDEC REGISTRATION MO 187 B DIMENSIONS ARE IN MILLIMETERS C DIMENSIONS ARE EXCLUSIVE OF BURRS MOLD FLASH AND TIE BAR EXTRUSIONS D DIMENSIONS AND TOLERANCES PER ANSI Y14 5M 1982 MABO8AREVC Physical Dimensions inches millimeters unless otherwise noted 1 80 Het 2 70 3 490 1 00 Te 0 30 TYP 05TYP te LAND PATTERN RECOMMENDATION DETAIL A a aaa 0 4 TYP 4 GAGE PLANE 0 12 ee T es DETAIL A 8 Lead US8 JEDEC MO 187 Variation CA 3 1mm Wide Package Number MAB08A www fairchildsemi com Physical Dimensions inches millimeters unless otherwise noted Continued
3. D FAIRCHILD ea ae a SEMICONDUCTOR NC7WBD3125 May 2000 Revised December 2005 2 Bit Low Power Bus Switch with Level Shifting General Description The NC7WBD3125 is a 2 bit ultra high speed CMOS FET bus switch with enhanced level shifting circuitry and with TTL com patible 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 indepen dent of Voc Features E Space saving US8 surface mount package E MicroPak Pb Free leadless package E Typical 3Q switch resistance at 5 0V Voc Vin OV E Level shift facilitates 5V to 3 3V interfacing E Minimal propagation delay through the switch E Power down high impedance input output E Zero bounce in flow through mode E TTL compatible active LOW control inputs E Control inputs are overvoltage tolerant E Bus switch replacement for x125 logic part Ordering Code Package Order Package Code Package Description Supplied
4. 8 3 0 4 8 ns Vi 7V for tpLz Figures Big Vi OV for tppz 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 Typ Max Units Conditions Cin Control Pin Input Capacitance 2 5 pF Voc 0V Cio OFF Port OFF Capacitance 6 0 pF Voc 5 0V OE Cyo ON Port ON Capacitance 12 0 pF Voc 5 0V OE 0V AC Loading and Waveforms VI RU From Output Under Test CL RD Input PRR 1 0 MHz tw 500 ns FIGURE 1 AC Test Circuit t 2 5 ns FIGURE 2 AC Waveforms CL includes load and stray capacitance 3 0V SWITCH INPUT GND tpzL lt Vou SWITCH OUTPUT 1 5V 1 5V VoL gt tpz Le Input driven by 50Q source terminated in 50Q 3 0V GND Vo 0 3V VoL tpz M You Voy 0 3V www fairchildsemi com 4 NC7WBD3125 LIN 4 8 E R 4 8 oO Go 4 Nn NN ON Le A aeon ndino jaaa Yybiy HOA N DC Electrical Characteristics 5 25 5 50 5 75 5 00 4 75 n Vcc Supply Voltage V E Los n mn 8 E amp 4 8 N aeon yndjng 18487 ybiy HOA Vcc Supply Voltage V 0 in a 8
5. As Number Number Top Mark NC7WBD3125K8X MABO8A WB5D 8 Lead US8 JEDEC MO 187 Variation CA 3 1mm Wide 3k Units on Tape and Reel NC7WBD3125L8X MACO8A T9 Pb Free 8 Lead MicroPak 1 6 mm Wide 5k Units on Tape and Reel Preliminary Pb Free package per JEDEC J STD 020B MicroPak is a trademark of Fairchild Semiconductor Corporation 2005 Fairchild Semiconductor Corporation DS500374 www fairchildsemi com Bulyiys 19497 YUM UOIMS SNg 19MOd MOT H9 2 SCLEGEMZLON NC7WBD3125 Logic Diagram Pin Descriptions Pin Name Description A Bus A Switch I O B Bus B Switch I O OE Bus Enable Input Function Table Bus Enable In us Enable Input Function OE L B Connected to A H Disconnected H HIGH Logic Level L LOW Logic Level Connection Diagrams Pin Assignments for US8 Top View Pin One Orientation Diagram Top View 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 OE 1A 2A 7 6 5 Co C1 Top Through View www fairchildsemi com Absolute Maximum RatingS Note 1 Supply Voltage Vcc DC Switch Voltage Vs DC Output Voltage Vin Note 2 DC Input Diode Current lik Vin lt OV DC Output lour Current DC Vcc or Ground
6. Current I c lanp Storage Temperature Range Tsrc Junction Temperature under Bias Ty Lead Temperature TL Soldering 10 Seconds Power Dissipation Pp 85 C 0 5V to 7 0V 0 5V to 7 0V 0 5V to 7 0V 50 mA 128 mA 100 mA 65 C to 150 C 150 C 260 C 250 mW DC Electrical Characteristics Recommended Operating Conditions note 3 Supply Operating Vcc Control Input Voltage Vin Switch Input Voltage Vin Switch Output Voltage Vour Operating Temperature Ta Input Rise and Fall Time t ts Control Input Switch I O Thermal Resistance 0 ja 4 5V to 5 5V OV to 5 5V OV to 5 5V OV to 5 5V 40 C to 85 C 0 ns V to 5 ns V 0 ns V to DC 250 C 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 lim its The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings The Recommended Operating Condi tions 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 Vec Ta 40 C to 85 C g n Symbol Parameter U
7. E amp 8 N N N eBeyoa yndyng 18487 ybiy HOA o N Vcc Supply Voltage M FIGURE 3 Typical High Level Output Voltage vs Supply Voltage www fairchildsemi com NC7WBD3125 Tape and Reel Specification TAPE FORMAT for US8 Package Tape Number Cavity Cover Tape Designator Section Cavities Status Status Leader Start End 125 typ Empty Sealed K8X Carrier 250 Filled Sealed Trailer Hub End 75 typ Empty Sealed TAPE DIMENSIONS inches millimeters e 4 00 2 00 4 00 I 3 50 0 05 ns 1 00 0 25 TYP TAPE FORMAT for MicroPak Package Tape Number Cavity Cover Tape Designator Section Cavities Status Status Leader Start End 125 typ Empty Sealed L8X Carrier 250 Filled Sealed Trailer Hub End 75 typ Empty Sealed TAPE DIMENSIONS inches millimeters 4 2 00 4 00 2 5099 as 1 750 10 7 8 og 930 A ieee O OF 3 50 0 05 5 MAX 1 782 0 05 0 50 0 05 0 254 40 020 po Cr Cerner and Pra www fairchildsemi com 6 REEL DIMENSIONS inches millimeters TAPE SLOT pra Le W DETAIL X Le ws SCALE 3X Wo Tape Size A B C D N W1 W2 W3 pg 7 0 0 059 0 512 0 795 2 165 0 331 0 059 0 000 0 567 W1 0 078 0 039 177 8 1 50 13 00 20 20 55 00 8 40 1 50 0 00 14 40 W1 2 00 1 00
8. IRCHILD 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 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 provided in the labeling can be reasonably expected to result in significant injury to the user 2 A critical component is any component of a life support device or system whose failure to perform can be reason ably expected to cause the failure of the life support device or system or to affect its safety or effectiveness This datasheet contains the design specifications for product develop ment 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 dis continued by Fairchild Semiconductor The datasheet is printed for ref erence information only www fairchildsemi com 10
9. nits Conditions V Min Typ Max Vik Clamp Diode Voltage 4 5 1 2 V lin 18 mA Vin HIGH Level Input Voltage 4 5 to 5 5 2 0 Vv Vit LOW Level Input Voltage 4 5 to 5 5 0 8 Vv Vou HIGH Level Output Voltage 4 5 to 5 5 See Figure 3 V Vin Voc lin Input Leakage Current 5 5 1 0 LA O lt VN lt 5 5V lor Power OFF Leakage Current 5 5 1 0 uA 0 lt A B lt Voc Ron Switch On Resistance 4 5 3 0 7 0 Vin OV lin 64 mA Note 4 4 5 3 0 7 0 Q Vin OV lin 30 mA 4 5 15 0 50 0 Vin 2 4Y lin 15 mA loc Quiescent Supply Current 5 5 Vin Voc or GND lour 0 1 1 1 5 mA OE OE GND 10 0 uA OE OE Vec A lcc Increase in Icc per Input 55 10 25 na Vin 3 AV One OE Input only Note 5 Other OE Voc 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 www fairchildsemi com ScLEGEMZON NC7WBD3125 AC Electrical Characteristics TA 40 C to 85 C Symbol Parameter Vec C 50 pF RU RD 5009 Units Conditions Figure V Min Typ Max Number PHL Propagation Delay Bus to Bus 4 5 to 5 5 0 25 ns V OPEN Figures teLH Note 6 1 2 tpzL Output Enable Time 4 5 to 5 5 1 0 8 5 5 8 ns Vi 7V for tpz Figures tpzH Vi OV for tpzy 1 2 tPLZ Output Disable Time 4 5 to 5 5 0
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FAIRCHILD NC7WBD3125 2 Bit Low Power Bus Switch with Level Shifting handbook