MC74F399 Datasheet (Motorola) - QUAD 2-PORT REGISTER FAST SCHOTTKY TTL

MC74F399, QUAD 2-PORT REGISTER FAST SCHOTTKY TTL

The MC54/74F398 is a high-speed quad 2-port register.

It will select four bits of data from either of two sources (Ports) under control of a common Select input (S).

The selected data is transferred to a 4-bit output register synchronous with the LOW-to-HIGH transition of the Clock input (CP).

The 4

www.DataSheet4U.com MC54/74F399 QUAD 2-PORT REGISTER The MC54/74F399 is the logical equivalent of a quad 2-input multiplexer feeding into four edge-triggered flip flops.

A common Select input determines which of the two 4-bit words is accepted.

The selected data enters the flipflops on the rising edge of the clock.

The MC54/74F399 is the 16-pin version of the MC54/74F398, with only the Q outputs of the flip-flops available.

QUAD 2-PORT REGISTER FAST™ SCHOTTKY TTL Select Inputs from