Product Overview MC74ACT646: Octal Bus Transceiver/Register with 3-State Outputs (Noninverting) For complete documentation, see the data sheet Product Description The MC74AC646/74ACT646 consist of registered bus transceiver circuits, with outputs, D-type flip-flops and control circuitry providing multiplexed transmission of data directly from the input bus or from the internal storage registers. Data on the A or B bus will be loaded into the respective registers on the LOW-to-HIGH transition of the appropriate clock pin (CAB or CBA). The four fundamental data handling functions available are illustrated in the following figures. Features • • • • • • • • Independent Registers for A and B Buses Multiplexed Real-Time and Stored Data Transfers Choice of True and Inverting Data Paths 3-State Outputs 300 mil Slim Dual In-Line Package Outputs Source/Sink 24 mA ACT646 Has TTL Compatible Inputs These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative. Part Electrical Specifications Product Compliance Status Channels Output VCC Min (V) VCC Max (V) tpd Max (ns) IO Max (mA) Package Type MC74ACT646DWG Pb-free Active 8 3-State 4.5 5.5 14.5 24 SOIC-24 Active 8 3-State 4.5 5.5 14.5 24 SOIC-24 Halide free MC74ACT646DWR2G Pb-free Halide free For more information please contact your local sales support at www.onsemi.com Created on: 6/30/2016