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Wide Operating Voltage Range of 2 V to 6 V

High-Current 3-State Outputs Can Drive Up

To 15 LSTTL Loads

Low Power Consumption, 80-μA Max ICC

Typical tpd = 11 ns

±6-mA Output Drive at 5 V

Low Input Current of 1 μA Max

Independent Registers and Enables for

A and B Buses

Multiplexed Real-Time and Stored Data

True Data Paths

description/ordering information

The ’HC652 devices consist of bus-transceiver circuits, D-type flip-flops, and control circuitry arranged for

multiplexed transmission of data directly from the data bus or from the internal storage registers. Output-enable

(OEAB and OEBA) inputs are provided to control the transceiver functions. Select-control (SAB and SBA) inputs

are provided to select real-time or stored-data transfer. A low input level selects real-time data, and a high input

level selects stored data. Figure 1 illustrates the four fundamental bus-management functions that can be

performed with these devices.