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The NTE74LS399 is a monolithic quadruple two-input multiplexer with storage in a 16-lead plastic DIP-type package that provides essentially the equivalent functional capabilities of two separate MSL functions (NTE74LS157 and NTE74LS175). When the word-select input is low, word 1 (A1, B1, C1, D1) is applied to the flip-flops. A high input to word select will cause the selection of word 2 (A2, B2, C2, D2). The selected word is clocked to the output terminals on the positive-going edge of the clock pulse. Typical power dissipation is 37mW.
Selects one of two 4−bit data sources and stores data synchronously with system clock
Absolute Maximum Ratings:
Supply voltage VCC: 7V
Input voltage: 7V
Operating temperature range TA: 0°C to +70°C
Storage temperature range Tstg: -65°C to +150°C
Unless otherwise specified, all voltages are referenced to GND
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