Revised June 2000 NC7SB3257 TinyLogic UHS Single 2-to-1 Multiplexer/Demultiplexer Bus Switch General Description Features The NC7SB3257 is a high performance, 2-to-1 NMOS passgate multiplexer/demultiplexer from Fairchild’s Ultra High Speed Series of TinyLogic. The device is fabricated with advanced sub-micron CMOS technology to achieve high speed enable and disable times and low on resistance. The device is specified to operate over the 4.0 to 5.5V VCC operating range. The control input tolerates voltages up to 5.5V independent of the VCC operating range. ■ Space saving SC70 6-lead surface mount package ■ Typical 3Ω switch resistance @ 5.0V VCC ■ Minimal propagation delay through the switch ■ Power down high impedance control input ■ Zero bounce in flow through mode ■ TTL compatible control input ■ Overvoltage tolerance of control input to 7.0V ■ Break before make enable circuitry Ordering Code: Order Number Package Number Product Code Top Mark NC7SB3257P6X MAA06A B7B Package Description Supplied As 6-Lead SC70, EIAJ SC88, 1.25mm Wide Logic Symbol 3k Units on Tape and Reel Connection Diagram Pin Descriptions Pin Names (Top View) Description A, B0, B1 Data Ports SEL Control Input Pin One Orientation Diagram Function Table Input (SEL) Function L B0 Connected to A H B1 Connected to A H = HIGH Logic Level L = LOW Logic Level AAA = 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). TinyLogic is a trademark of Fairchild Semiconductor Corporation. © 2000 Fairchild Semiconductor Corporation DS500325 www.fairchildsemi.com NC7SB3257 TinyLogic UHS Single 2-to-1 Multiplexer/Demultiplexer Bus Switch January 2000 NC7SB3257 Absolute Maximum Ratings(Note 1) Recommended Operating Conditions (Note 2) Supply Voltage (VCC) −0.5V to +7.0V DC Switch Voltage (VS) −0.5V to +7.0V Supply Voltage Operating (VCC) DC Output Voltage (VIN) −0.5V to +7.0V Control Input Voltage (VIN) 0V to VCC Switch Input Voltage (VIN) 0V to VCC DC Input Diode Current (IIK) @ (IIK) VIN < 0V DC Output Current (IOUT) Output Voltage (VOUT) 128 mA Operating Temperature (TA) ±100 mA DC VCC or Ground Current (ICC/IGND) Storage Temperature Range (TSTG) −50 mA Control Input VCC = 4.0V to 5.5V +150°C 350°C/W Note 1: Absolute maximum ratings are DC values beyond which the device may be damaged or have its useful life impaired. The datasheet specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation outside datasheet specifications. +260°C (Soldering, 10 seconds) 0 ns/V to 5 ns/V Thermal Resistance (θJA) Lead Temperature (TL) Power Dissipation (PD) @ +85°C 0V to VCC −40°C to +85°C Input Rise and Fall Time (tr, tf) −65°C to +150°C Junction Lead Temperature under Bias (TJ) 4.0V to 5.5V 180 mW Note 2: Control input must be held HIGH or LOW, it must not float. Note 3: The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. DC Electrical Characteristics Symbol Parameter VCC (V) TA = −40°C to +85°C Min Typ Max −1.2 4.5 Units IIN = −18 mA VIK Clamp Diode Voltage VIH HIGH Level Input Voltage 4.5 − 5.5 VIL LOW Level Input Voltage 4.5 − 5.5 0.8 IIN Input Leakage Current 5.5 ±1 µA 0 ≤ VIN ≤ 5.5V IOFF OFF State Leakage Current 5.5 ±1 µA 0 ≤ A, B ≤ VCC RON Switch ON Resistance (Note 4) 4.5 3 7 Ω VIN = 0V, IIN = 64 mA 4.5 3 7 Ω VIN = 0V, IIN = 30 mA VIN = 2.4V, IIN = 15 mA 2.0 V Conditions V 4.5 6 15 Ω 4.0 10 20 Ω VIN = 2.4V, IIN = 15 mA 10 µA VIN = VCC or GND 2.5 mA ICC Quiescent Supply Current 5.5 ∆ICC Increase in ICC Per Input (Note 5) 5.5 IOUT = 0 0.9 VIN = 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 Ports). Note 5: Per TTL driven Input (VIN = 3.4V, Control input only). A and B pins do not contribute to ICC. www.fairchildsemi.com 2 TA = −40°C to +85°C Symbol Parameter VCC (V) tPHL Propagation Delay Bus to Bus tPLH (Note 6) tPZL Output Enable Time tPZH tPLZ Output Disable Time tPHZ tB-M Break Before Make Time (Note 7) CL = 50 pF, RU = RD =500Ω Min Typ 4.0 − 55 Units Conditions Fig. No. Max 0.25 ns Figures 1, 2 VI = OPEN 4.5 − 5.5 1.8 6.5 4.0 1.8 7.3 4.5 − 5.5 0.8 4.7 VI = 7V for tPLZ 4.0 0.8 5.3 VI = 0V for tPHZ 4.5 − 5.5 0.5 4.0 0.5 ns VI = 7V for tPZL VI = 0V for tPZH ns Figures 1, 2 Figures 1, 2 Figure 3 Note 6: This parameter is guaranteed by design but not tested. The bus switch contributes no propagation delay other than the RC delay of the on resistance of the switch and the 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance). Note 7: Guaranteed by design. Capacitance Symbol (Note 8) Parameter Typ Max Units Conditions CIN Control Pin Input Capacitance 2.3 pF VCC = 0V CIO-B B Port OFF Capacitance 5.7 pF VCC = 5.0V CIO-A A Port ON Capacitance 16 pF VCC = 5.0V Note 8: Capacitance is characterized but not tested. 3 www.fairchildsemi.com NC7SB3257 AC Electrical Characteristics NC7SB3257 AC Loading and Waveforms Note: Input Driven by 50Ω source terminated in 50Ω Note: CL includes load and stray capacitance Note: Input PRR = 1.0 MHz; tW = 500 ns FIGURE 1. AC Test Circuit Input = AC Waveform; PRR = Variable; Duty Cycle = 50% FIGURE 2. AC Waveforms FIGURE 3. Break Before Make Interval Timing www.fairchildsemi.com 4 TAPE FORMAT Package Designator Tape Number Cavity Section Cavities Status Status 125 (typ) Empty Sealed 3000 Filled Sealed 75 (typ) Empty Sealed Leader (Start End) P6X Carrier Trailer (Hub End) Cover Tape TAPE DIMENSIONS inches (millimeters) Package SC70-6 Tape Size 8 mm DIM A DIM B 0.093 0.096 (2.35) (2.45) DIM F DIM Ko 0.138 ± 0.004 0.053 ± 0.004 (3.5 ± 0.10) 5 (1.35 ± 0.10) DIM P1 DIM W 0.157 0.315 ± 0.004 (4) (8 ± 0.1) www.fairchildsemi.com NC7SB3257 Tape and Reel Specification NC7SB3257 Tape and Reel Specification (Continued) REEL DIMENSIONS inches (millimeters) Tape Size 8 mm A B C D N W1 W2 W3 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) www.fairchildsemi.com 6 NC7SB3257 TinyLogic UHS Single 2-to-1 Multiplexer/Demultiplexer Bus Switch Physical Dimensions inches (millimeters) unless otherwise noted 6-Lead SC70, EIAJ SC88, 1.25mm Wide Package Number MAA06A 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: 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. 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 7 www.fairchildsemi.com