MC74ACT640 Octal 3-State Inverting Transciever The MC74ACT640 octal bus transceiver is designed for asynchronous two-way communication between data buses. The device transmits data from bus A to bus B when T/R = HIGH, or from www.onsemi.com bus B to bus A when T/R = LOW. The enable input can be used to disable the device so the buses are effectively isolated. Features SOIC20W Bidirectional Data Path DW SUFFIX CASE 751D A and B Outputs Sink 24 mA/Source 24 mA 1 TTL Compatible Inputs These are PbFree Devices ORDERING INFORMATION V OE B B B B B B B B CC 0 1 2 3 4 5 6 7 See detailed ordering and shipping information in the package dimensions section on page 5 of this data sheet. 20 19 18 17 16 15 14 12 13 11 DEVICE MARKING INFORMATION See general marking information in the device marking section on page 5 of this data sheet. 1 2 3 4567 9 8 10 T/R A A A A A A A A GND 0 1 2 3 4 5 6 7 Figure 1. Pinout: 20Lead Packages Conductors (Top View) PIN ASSIGNMENT PIN FUNCTION A A Side A Inputs or 3-State Outputs 0 7 OE Output Enable Input T/R Transmit/Receive Input B B Side B Inputs or 3-State Outputs 0 7 TRUTH TABLE Valid Applied Direction OE T/R Inputs I/PO/P Output H X X X X L H H A to B L L H L A to B H L L H B to A L L L L B to A H H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: March, 2015 Rev. 4 MC74ACT640/DMC74ACT640 MAXIMUM RATINGS Symbol Parameter Value Unit V DC Supply Voltage (Referenced to GND) 0.5 to +7.0 V CC V DC Input Voltage (Referenced to GND) 0.5 to V +0.5 V IN CC V DC Output Voltage (Referenced to GND) (Note 1) 0.5 to V +0.5 V OUT CC I DC Input Diode Current 20 mA IK I DC Output Diode Current 50 mA OK I DC Output Sink/Source Current 50 mA OUT I DC Supply Current, per Output Pin 50 mA CC I DC Ground Current, per Output Pin 100 mA GND T Storage Temperature Range 65 to 150 C STG T Lead temperature, 1 mm from Case for 10 Seconds 260 C L T Junction Temperature Under Bias 140 C J Thermal Resistance (Note 2) 65.8 C/W JA MSL Moisture Sensitivity Level 1 F Flammability Rating Oxygen Index: 30% 35% UL 94 V0 0.125 in R V ESD Withstand Voltage Human Body Model (Note 3) > 2000 V ESD Machine Model (Note 4) > 200 Charged Device Model (Note 5) > 1000 I 100 mA Latchup Performance Above V and Below GND at 85 C (Note 6) Latchup CC Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. I absolute maximum rating must be observed. OUT 2. The package thermal impedance is calculated in accordance with JESD 517. 3. Tested to EIA/JESD22A114A. 4. Tested to EIA/JESD22A115A. 5. Tested to JESD22C101A. 6. Tested to EIA/JESD78. RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min Typ Max Unit V DC Input Voltage (Referenced to GND) 4.5 5.5 V CC V , V DC Input Voltage, Output Voltage (Referenced to GND) 0 V V in out CC T Operating Temperature, All Package Types 40 25 +85 C A t , t Input Rise and Fall Time (Note 8) V = 4.5 V 0 10 10 ns/V r f CC V = 5.5 V 0 8.0 8.0 CC I Output Current High 24 mA OH I Output Current Low 24 mA OL Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. 7. Unused Inputs may not be left open. All inputs must be tied to a high voltage level or low logic voltage level. 8. V from 0.8 V to 2.0 V refer to individual Data Sheets for devices that differ from the typical input rise and fall times. in www.onsemi.com 2