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NC7WB66 TinyLogic Low Voltage UHS Dual SPST Normally Open Bus Switch
May 2000 Revised August 2003
NC7WB66 TinyLogic Low Voltage UHS Dual SPST Normally Open Bus Switch
General Description
The NC7WB66 is an ultra high-speed (UHS) dual singlepole/single-throw (SPST) bus switch. The device is fabricated with advanced sub-micron CMOS technology to achieve high speed enable and disable times and low On Resistance over a broad VCC range. The device is specified to operate over the 1.65 to 5.5V VCC operating range. The device is organized as a dual switch with independent CMOS compatible switch enable (OE) controls. When OE is HIGH, the switch is ON and Port A is connected to Port B. When OE is LOW, the switch is OPEN and a highimpedance state exists between the two ports. The enable inputs tolerate voltages up to 5.5V independent of the VCC operating range.
Features
s Useful in both analog and digital applications s Space saving US8 surface mount package s MicroPak leadless package s Typical 7 On Resistance @ 5V VCC s Broad VCC operating range: 1.65V to 5.5V s Rail-to-rail signal handling s Power down high impedance control inputs s Control inputs are overvoltage tolerant s Control inputs are CMOS compatible
Ordering Code:
Product Order Number Package Code WB66 P4 Package Description Supplied As Number Top Mark 8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3K Units on Tape and Reel 8-Lead MicroPak, 1.6 mm Wide 5K Units on Tape and Reel
NC7WB66K8X MAB08A NC7WB66L8X MAC08A
TinyLogic is a registered trademark of Fairchild Semiconductor Corporation. MicroPak is a trademark of Fairchild Semiconductor Corporation.
(c) 2003 Fairchild Semiconductor Corporation
DS500373
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NC7WB66
Logic Symbol
Connection Diagrams
(Top View) Pin One Orientation Diagram
Pin Descriptions
Pin Names A B OE Description Switch Port A Switch Port B Control Input
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 Table
Switch Enable Input (OE) L H
H = HIGH Logic Level
Function Disconnect B Connected to A
Pad Assignments for MicroPak
L = LOW Logic Level
(Top Through View)
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NC7WB66
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) DC Switch Voltage (VS) DC Input Voltage (VIN) (Note 2) DC Input Diode Current @ (IIK) VIN < 0V DC Switch Output Current (IOUT) DC VCC or Ground Current (ICC/IGND) Storage Temperature Range (TSTG) Junction Lead Temperature under Bias (TJ) Junction Lead Temperature (TL) (Soldering, 10 Seconds) Power Dissipation (PD) @ +85C SC70-6 250 mW
-0.5V to +7.0V -0.5V to VCC + 0.5V -0.5V to +7.0V -50 mA 128 mA 100 mA -65C to +150C +150C +260C
Recommended Operating Conditions (Note 3)
Supply Voltage (VCC) Control Input Voltage (VIN) Switch Input Voltage (VIN) Switch Output Voltage (VOUT) Operating Temperature (TA) Input Rise and Fall Time (tr, tf) Control Input VCC = 1.65V-2.7V Control Input VCC = 3.0V-3.6V Control Input VCC = 4.5V-5.5V Thermal Resistance (JA) 0 ns/V to 20 ns/V 0 ns/V to 10 ns/V 0 ns/V to 5 ns/V 250C/W 1.65V to 5.5V 0V to 5.5V 0V to VCC 0V to VCC
-40C to +85C
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 inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol VIH VIL IIN IOFF RON Parameter HIGH Level Input Voltage LOW Level Input Voltage Input Leakage Current Switch OFF Leakage Current Switch ON Resistance (Note 4) 4.5 VCC (V) 2.3-5.5 1.65-1.95 2.3-5.5 0-5.5 1.65-5.5 6 7 6 3.0 2.3 1.65 ICC Quiescent Supply Current All Channels ON or OFF Analog Signal Range RRange ON Resistance over Signal Range (Note 4)(Note 5) RON ON Resistance Match Between Channels (Note 4)(Note 7) 7.5 8.5 9 10.5 12.5 17 5.5 VCC 4.5 3.0 2.3 1.65 4.5 3.0 2.3 1.65 0 8 15 45 150 0.2 0.2 0.5 0.6 Min 0.7 VCC 0.25 VCC 0.3 VCC 0.1 0.1 10 13.5 10 15 15 20 20 30 30 1 VCC 15 30 75 275 0 1.65-1.95 0.75 VCC TA = +25C Typ Max TA= -40C to +85C Min 0.75 VCC 0.7 VCC 0.25VCC 0.3 VCC 1.0 1.0 10 13.5 10 15 15 20 20 30 30 10 VCC 15 30 75 275 A V IO = -30 mA, 0 VI VCC IO = -24 mA, 0 VI VCC IO = -8 mA, 0 VI VCC IO = -4 mA, 0 VI VCC IO = -30 mA, VI = 3.15 IO = -24 mA, VI = 2.1 IO = -8 mA, VI = 1.6 IO = -4 mA, VI = 1.15 Max V V A A 0 VIN 5.5V 0 A, B VCC VI = 0V, IO = 30 mA VI = 2.4V, IO = -30 mA VI = 4.5V, IO = -30 mA VI = 0V, IO = 24 mA VI = 3V, IO = -24 mA VI = 0V, IO = 8 mA VI = 2.3V, IO = -8 mA VI = 0V, IO = 4 mA VI = 1.65V, IO = -4 mA VIN = VCC or GND IOUT = 0 Units Conditions
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NC7WB66
DC Electrical Characteristics
Symbol Rflat Parameter ON Resistance Flatness (Note 4)(Note 5)(Note 6) VCC (V) 4.5 3.0 2.3 1.65
(Continued)
TA = +25C TA= -40C to +85C Max 6 17.5 60 250 Min Max 6 17.5 60 250 IO = -30 mA, 0 VI VCC IO = -24 mA, 0 VI VCC IO = -8 mA, 0 V I VCC IO = -4 mA, 0 V I VCC
Units
Conditions
Min
Typ 2.5 8 33 135
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: Guaranteed by design. Note 6: Flatness is defined as the difference between the minimum and maximum value of ON resistance over the specified range of conditions. Note 7: RON = RON max - RON min measured at identical VCC, temperature and voltage levels.
AC Electrical Characteristics
Symbol tPHL, tPLH Parameter Propagation Delay Bus to Bus (Note 8) VCC (V) 4.5-5.5 3.0-3.6 2.3-2.7 1.65-1.95 tPZL, tPZH Output Enable Time Turn on Time 4.5-5.5 3.0-3.6 2.3-2.7 1.65-1.95 tPLZ, tPHZ Output Disable Time Turn Off Time 4.5-5.5 3.0-3.6 2.3-2.7 1.65-1.95 0.8 1.2 1.5 2.5 0.8 1.5 2.0 3.0 TA= -40C to +85C Min Typ 0.35 0.7 1.1 2.0 2.0 2.5 3.2 5.7 2.6 3.4 4.2 6.2 Max 1.0 1.5 2.5 4.0 3.2 3.9 5.6 10 4.1 5.0 6.9 10.5 ns VI = 0V for tPHZ VI = 2 x VCC for tPLZ CL = 50 pF, RU = RD = 500 Figures 2, 1 ns VI = 0V for tPZH VI = 2 x VCC for tPZL CL = 50 pF, RU = RD = 500 Figures 2, 1 ns VI = OPEN CL = 50 pF, RU = RD = 500 Figures 2, 1 Units Conditions Figure Number
Note 8: This parameter is guaranteed by design. The switch contributes no propagation delay other than the RC delay of the On resistance of the switch and the 50 pF load capacitance.
Capacitance
Symbol CIN CI/O (ON) Parameter Control Pin Input Capacitance Switch Port Capacitance when Switch is Enabled Typ 2.5 5 10 Max Units pF pF pF VCC = 0V VCC = 5.0V VCC = 5.0V Figure 3 Figure 4 Conditions Figures
CI/O (OFF) Switch Port Off Capacitance
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NC7WB66
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
FIGURE 3. Channel Off Capacitance
FIGURE 4. Channel On Capacitance
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NC7WB66
Tape and Reel Specification
TAPE FORMAT Package Designator K8X Tape Section Leader (Start End) Carrier Trailer (Hub End) TAPE DIMENSIONS inches (millimeters) Number Cavities 125 (typ) 250 75 (typ) Cavity Status Empty Filled Empty Cover Tape Status Sealed Sealed Sealed
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)
W1 0.331 + 0.059/-0.000 (8.40 + 1.50/-0.00)
W2 0.567 (14.40)
W3 W1 + 0.078/-0.039 (W1 + 2.00/-1.00)
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NC7WB66
Physical Dimensions inches (millimeters) unless otherwise noted
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide Package Number MAB08A
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NC7WB66 TinyLogic Low Voltage UHS Dual SPST Normally Open Bus Switch
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
8-Lead MicroPak, 1.6 mm Wide Package Number MAC08A
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. 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: 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, and (c) whose failure 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 user. www.fairchildsemi.com 8 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com

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