UNISONIC TECHNOLOGIES CO., LTD U74CBT3257C CMOS IC 4-BIT 1-OF-2 FET MULTIPLEXER/ DEMULTIPLEXER DESCRIPTION The UTC U74CBT3257C is a 4-BIT 1-OF-2 FET multiplexer/ demultiplexer with Low ON-State Resistance (RON) and TTL-compatibility. FEATURES * Undershoot Protection for Off-Isolation on A and B Ports Up to -2V * VCC Operating Range From 4V to 5.5V * Bidirectional Data Flow, With Near-Zero Propagation Delay * Low ON-State Resistance (RON) Characteristics (RON =3Ω Typ.) * Low Power Consumption ICC =3μA (Max) * Data and Control Inputs Provide Undershoot Clamp Diodes * Data I/Os Support 0 to 5-V Signaling Levels (0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V) * Control Inputs Can be Driven by TTL or 5V/3.3V CMOS Outputs * IOFF Supports Partial-Power-Down Mode Operation 2 * Supports I C Bus Expansion ORDERING INFORMATION Ordering Number U74CBT3257CG-R16-R U74CBT3257CG-P16-R Package SSOP-16 TSSOP-16 Packing Tape Reel Tape Reel MARKING SSOP-16 www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd TSSOP-16 1 of 5 QW-R502-359.D U74CBT3257C CMOS IC PIN CONFIGURATION FUNCTION TABLE INPUT OE S2 L L H L H X INPUT/OUTPUT A B1 B2 Z FUNCTION A port=B1 port A port=B2 port Disconnect LOGIC DIAGRAM 1A SW 1B1 SW 2A 2B1 SW SW 3A 2B2 3B1 SW SW 4A 1B2 SW 3B2 4B1 SW 4B2 S OE UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R502-359.D U74CBT3257C CMOS IC ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified) PARAMETER Supply Voltage DC Input Voltage (Note 2, 3) SYMBOL RATINGS UNIT VCC -0.5 ~ 7 V VIN -0.5 ~ 7 V VIN(SW) DC Switch Voltage (Note 2, 3) -0.5 ~7 V VOUT(SW) Control Input Clamp Current IIK -50 mA DC VCC or GND Current ICC ±100 mA IIN(SW) ON-State Switch Current ±128 mA IOUT(SW) Operating Temperature TOPR -40~+85 °C Storage Temperature TSTG -65~+150 °C Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. All voltages are with respect to ground 3. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed. THERMAL DATA PARAMETER Junction to Ambient SYMBOL SSOP-16 TSSOP-16 θJA UNIT °C/W RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage High-Level Control Input Voltage Low-Level Control Input Voltage Data Input Voltage Data Output Voltage Operating Temperature RATINGS 90 110 SYMBOL VCC VIH VIL VIN VOUT TA MIN 4 2 0 0 0 -40 TYP MAX 5.5 5.5 0.8 5.5 5.5 85 UNIT V V V V °C ELECTRICAL CHARACTERISTICS (TA=25°C, unless otherwise specified) PARAMETER Control Input Clamp Voltage Data Inputs Clamp Voltage Input Leakage Current SYMBOL VIK VIKU II(LEAK) Output OFF-State Current IOZ Power OFF Leakage Current IOFF Quiescent Supply Current ICC Additional Quiescent Supply Current ∆ICC Control Input Capacitance A Port Input Capacitance B Port Input Capacitance Port Input Capacitance CIN ON-Resistance CIO(OFF) CIO(ON) RON TEST CONDITIONS VCC =4.5V, IIN = -18mA VCC =5V, 0mA >IIN ≥ -50mA GND, Switch OFF VCC =5.5V, VIN =VCC or GND VCC=5.5V, VOUT=0 to 5.5V, VIN=0 VIN =VCC or GND, Switch OFF VCC=0, VO=0 to 5.5V, VIN=0 VCC=5.5 V, IIN /IOUT =0 VIN=VCC or GND, Switch ON or OFF VCC=5.5V, One input at 3.4V, Other inputs at VCC or GND VIN=3V or 0 VCC=5V VIN/VOUT=3V or 0, VCC=5V VIN=VCC or GND, Switch OFF VI/O=3V or 0, VIN=VCC or 0, Switch ON VCC=4V, VIN=2.4V,IOUT =-15mA IOUT =64mA VCC =4.5V, VIN =0 IOUT =30mA VCC =4.5V, VIN =2.4V IOUT =-15mA UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN TYP MAX UNIT -1.8 V 3.5 8.5 5.5 16.5 8 3 3 5 -2 V ±1 µA ±10 µA 10 µA 3 µA 2.5 mA 12 6 6 10 pF pF pF pF Ω Ω Ω Ω 3 of 5 QW-R502-359.D U74CBT3257C CMOS IC SWITCHING CHARACTERISTICS CL=50PF (see TEST CIRCUIT AND WAVEFORMS) PARAMETER From input (A or B) to output (B or A) (Note) SYMBOL TEST CONDITIONS MIN TYP MAX UNIT VCC=4V, CL=50pF, RL=500Ω 0.24 ns tPD 0.15 ns VCC= 5V±0.5V, CL=50pF, RL=500Ω VCC=4V, CL=50pF, RL=500Ω 6.0 ns From input S to output A tPD(S) VCC= 5V±0.5V, CL=50pF, RL=500Ω 1.5 5.6 ns VCC=4V, CL=50pF, RL=500Ω 6.3 ns From input S to output B 1.5 5.8 ns VCC= 5V±0.5V, CL=50pF, RL=500Ω tEN VCC=4V, CL=50pF, RL=500Ω 6.3 ns From input OE to output (A or B) 1.5 5.8 ns VCC= 5V±0.5V, CL=50pF, RL=500Ω VCC=4V, CL=50pF, RL=500Ω 6.5 ns From input S to output B 1.5 6.0 ns VCC= 5V±0.5V, CL=50pF, RL=500Ω tDIS VCC=4V, CL=50pF, RL=500Ω 5.9 ns From input OE to output (A or B) 1.5 5.9 ns VCC= 5V±0.5V, CL=50pF, RL=500Ω Note: The propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load capacitance, when driven by an ideal voltage source (zero output impedance). UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R502-359.D U74CBT3257C CMOS IC TEST CIRCUIT AND WAVEFORMS TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH VCC 4V 5V±0.5V 4V 5V±0.5V 4V 5V±0.5V VI VCC or GND VCC or GND GND GND VCC VCC tR / tF ≤2.5ns ≤2.5ns ≤2.5ns ≤2.5ns ≤2.5ns ≤2.5ns Propagation Delay Times V∆ 0.3V 0.3V 0.3V 0.3V S Open Open VEXT VEXT Open Open CL 50pF 50pF 50pF 50pF 50pF 50pF RL 500Ω 500Ω 500Ω 500Ω 500Ω 500Ω Enable and Disable Times Notes: 1. CL includes probe and jig capacitance. 2. All input pulses are supplied by generators having the following characteristics: PRR≤10MHz, ZO=50Ω, tR≤2.5ns, tF≤2.5 ns. 3. The outputs are measured one at a time with one transition per measurement. 4. tPLZ and tPHZ are the same as tDIS. 5. tPZL and tPZH are the same as tEN. 6. tPLH and tPHL are the same as tPD(S). 7. All parameters and waveforms are not applicable to all devices. UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R502-359.D