Octal Transceiver/Register with 3-State Outputs (Non-inverting)

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 Figures 1 to 4.

• 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.