UNISONIC TECHNOLOGIES CO., LTD U74CBT3251 CMOS IC 1-OF-8 FET MULTIPLEXER/ DEMULTIPLEXER DESCRIPTION The U74CBT3251 is a 1-OF-8 high-speed TTL-compatible FET multiplexer / demultiplexer. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. When output enable (OE) is low, the U74CBT3251 is enabled. S0, S1, and S2 select one of the B outputs for the A-input data. FEATURES * VCC Operating Range From 4V to 5.5V * Bidirectional Data Flow, With minimal Propagation Delay * Low ON-State Resistance (RON) Characteristics (RON =5Ω Typ.) * Low Power Consumption ICC=3μA (Max) ORDERING INFORMATION Ordering Number U74CBT3251G-R16-R U74CBT3251G-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 6 QW-R502-907.C U74CBT3251 CMOS IC PIN CONFIGURATION FUNCTION TABLE INPUT OE S2 S1 S0 L L L L L L L L H L L L L H H H H X L L H H L L H H X L H L H L H L H X FUNCTION A port=B1 port A port=B2 port A port=B3 port A port=B4 port A port=B5 port A port=B6 port A port=B7 port A port=B8 port Disconnect UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R502-907.C U74CBT3251 CMOS IC LOGIC DIAGRAM A SW B1 B2 SW B3 SW B4 SW SW B5 SW B6 B7 SW SW B8 OE S0 S1 S2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R502-907.C U74CBT3251 CMOS IC ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified) PARAMETER Supply Voltage DC Input Voltage(see Note 2,3) Control Input Clamp Current SYMBOL RATINGS UNIT VCC -0.5 ~ 7 V VIN -0.5 ~ 7 V IIK -50 mA IIN(SW) ±128 mA ON-State Switch Current 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 V °C ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise specified) PARAMETER Control Input Clamp Voltage Input Leakage Current Quiescent Supply Current Additional Quiescent Supply Current Control Input Capacitance A Port Input Capacitance B Port Input Capacitance ON-Resistance SYMBOL VIK II(LEAK) ICC ∆ICC CIN CIO(OFF) RON TEST CONDITIONS VCC =4.5V, IIN = -18mA VCC =5.5V, VIN =VCC or GND 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 VIN=VCC or GND, Switch OFF 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 -1.2 V ±1 µA 3.5 17.5 4 14 5 5 10 3 µA 2.5 mA 20 7 7 15 pF pF pF Ω Ω Ω Ω 4 of 6 QW-R502-907.C UNISONIC TECHNOLOGIES CO., LTD U74CBT3251 CMOS IC SWITCHING CHARACTERISTICS (CL=50pF, RL=500Ω；see TEST CIRCUIT AND WAVEFORMS) PARAMETER From input (A or B) to output (B or A) (Note) From input S to output A SYMBOL tpd tpd(s) From input S to output B From input OE to output (A or B) From input S to output B ten TEST CONDITIONS VCC=4V VCC= 5V±0.5V VCC=4V VCC= 5V±0.5V VCC=4V VCC= 5V±0.5V VCC=4V VCC= 5V±0.5V VCC=4V VCC= 5V±0.5V VCC=4V MIN TYP MAX UNIT 0.35 ns 0.25 ns 6.0 ns 2 5.5 ns 6.4 ns 1.5 5.6 ns 6.4 ns 1.6 5.8 ns 1.9 6.8 6.4 6.0 ns ns ns tdis From input OE to output VCC= 5V±0.5V 2.3 6.2 ns (A or B) 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). www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 5 of 6 QW-R502-907.C U74CBT3251 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 VEXT Open Open 7V 7V 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 6 of 6 QW-R502-907.C