UNISONIC TECHNOLOGIES CO., LTD U74HC640 CMOS IC OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS DESCRIPTION The U74AHC640 is a octal bus transceivers with 3-state outputs. It is designed for asynchronous two-way communication between data buses. Depending on the direction-control (DIR) input, data are transmitted from the A bus to the B bus or from the B bus to the A bus. When OE is high, the buses are effectively isolated. When OE is low, the buses are enable. FEATURES * Wide Supply Voltage Range from 2V to 6V * Typical tPD of 8ns at 6V, CL=50pF * Low Power Consumption, ICC = 8μA (Max) at 5.5V * ±7.8mA Output Driver at 6V ORDERING INFORMATION Ordering Number Lead Free Halogen Free U74AHC640L-R20-R U74AHC640G-R20-R U74AHC640L-R20-T U74AHC640G-R20-T www.unisonic.com.tw Copyright © 2011 Unisonic Technologies Co., Ltd Package Packing SSOP-20 SSOP-20 Tape Reel Tube 1 of 7 QW-R126-008.A U74HC640 CMOS IC PIN CONFIGURATION DIR 1 20 VCC A1 2 19 OE A2 3 18 B1 A3 4 17 B2 A4 5 16 B3 A5 6 15 B4 A6 7 14 B5 A7 8 13 B6 A8 9 12 B7 GND 10 11 B8 FUNCTION TABLE INPUTS OE DIR L L H L H X OPERATION B data to A bus A data to B bus Isolation LOGIC DIAGRAM OE DIR A1 B1 To seven other transceivers UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 7 QW-R126-008.A U74HC640 CMOS IC ABSOLUTE MAXIMUM RATING (unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -0.5~7 V Input Voltage VIN -0.5~7 V Output Voltage VOUT -0.5~VCC +0.5 V Input Clamp Current (VIN<0) IIK ±20 mA Output Clamp Current (VOUT<0, or VOUT>VCC) IOK ±20 mA Output Current IOUT ±35 mA VCC or GND Current ICC ±70 mA Storage Temperature TSTG -65 ~ +150 °C Note: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. 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. RECOMMENDED OPERATING COMDITIONS PARAMETER Supply Voltage SYMBOL VCC High-Level Input Voltage VIH Low-Level Input Voltage VIL Input Voltage Output Voltage Input Transition Rise or Fall Rate Operating Temperature CONDITIONS VCC = 2V VCC = 4.5V VCC = 6V VCC = 2V VCC = 4.5V VCC = 6V VIN VOUT Δt/Δv MIN 2 1.5 3.15 4.2 TYP 5 UNIT V V 0.5 1.35 1.8 VCC VCC 1000 500 400 85 0 0 VCC = 2V VCC = 4.5V VCC = 6V TA MAX 6 -40 V V V ns/V °C ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified) PARAMETER High-Level Output Voltage Low-Level Output Voltage Input Leakage Current(DIR or OE ) High-Impedance State Current (A or B) Quiescent Supply Current Input Capacitance (DIR or OE ) SYMBOL VOH VOL II(LEAK) IOZ ICC CIN TEST CONDITIONS IOH = -20μA, VCC = 2V IOH = -20μA, VCC = 4.5V IOH = -20μA, VCC = 6V IOH = -6mA, VCC = 4.5V IOH = -7.8mA, VCC = 6V IOL = 20μA, VCC = 2V IOL = 20μA, VCC = 4.5V IOL = 20μA, VCC = 6V IOL = 6mA, VCC = 4.5V IOL = 7.8mA, VCC = 6V VIN = VCC or 0, VCC = 6V VOUT = VCC or 0, VCC = 6V VIN=VCC or 0,IOUT=0,VCC=6V VIN=VCC or 0,VCC=2V to 6V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 1.9 4.4 5.9 3.98 5.48 TYP 1.998 4.499 5.999 4.3 5.8 0.002 0.001 0.001 0.17 0.15 MAX 0.1 0.1 0.1 0.26 0.26 V ±0.1 ±0.01 ±100 ±0.5 8 10 μA μA μA pF 3 UNIT V 3 of 7 QW-R126-008.A U74HC640 CMOS IC SWITCHING CHARACTERISTICS (TA =25°C) CL=50pF, RL=1kΩ PARAMETER SYMBOL Propagation Delay from A to B or B to A tPD Enable Times from OE to A or B tEN Disable Times from OE to A or B tDIS Output Rise or fall Time CL=150pF, RL=1kΩ PARAMETER tT SYMBOL Propagation Delay from A to B or B to A tPD Enable Times from OE to A or B tEN OUTPUT rise or fall Time tT TEST CONDITIONS VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V MIN TYP 29 10 8 109 27 20 40 18 16 20 8 6 MAX UNIT 105 ns 21 18 230 ns 46 39 150 ns 30 26 60 ns 12 10 TEST CONDITIONS VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V VCC=2V VCC=4.5V VCC=6V MIN TYP 44 14 11 124 31 23 45 17 13 MAX UNIT 190 ns 38 33 315 ns 63 54 210 ns 42 36 OPERATING CHARACTERISTICS (TA =25°C) PARAMETER Power Dissipation Capacitance SYMBOL TEST CONDITIONS CPD No load UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP 40 UNIT pF 4 of 7 QW-R126-008.A U74HC640 CMOS IC TEST CIRCUIT AND WAVEFORMS VCC Input TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open VLOAD GND VM VLOAD VIN tR, tF 3.3V±0.3V VCC ≤3ns VCC/2 VCC 5V±0.5V VCC ≤3ns VCC/2 VCC 90% CL 50pF 150pF 50pF 150pF RL VΔ 1kΩ 0.3V 1kΩ 0.5V VCC 90% Input 10% 10% tR tF 0V Voltage Waveforms Input Rise and Fall Times UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R126-008.A U74HC640 CMOS IC TEST CIRCUIT AND WAVEFORMS(Cont.) VIN Input VM VM 0V tPHL tPLH 90% Output VOH 90% VM VM 10% 10% tR tPHL tPLH tF 90% 90% Output VM VOL VOH VM 10% 10% VOL tR tF Voltage Waveforms Propagation Delay and Output Transition Times VIN Input VM VM 0V tPZL tPLZ VLOAD Output VM S1 at VLOAD VOL+VΔ tPHZ tPZH VOH-VΔ Output VOL VOH VM S1 at GND 0V VOLTAGE WAVEFORMS 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 ≤1MHz, ZO = 50Ω, tR=6ns, tF=6ns. 3. tPLH and tPHL are the same as tPD . 4. tPLZ and tPHZ are the same as tDIS . 5. tPZH and tPZL are the same as tEN . UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 7 QW-R126-008.A U74HC640 CMOS IC 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 7 of 7 QW-R126-008.A