The TC74ACT151F is a high-speed 8-input multiplexer fabricated with silicon gate CMOS technology. It achieves speeds similar to equivalent Advanced Schottky TTL while maintaining the low power dissipation inherent in CMOS integrated circuits. This device selects one of eight data sources, determined by the 3-bit address input, and routes it to the single output. An enable input is provided which, when high, forces the output low regardless of all other input conditions.

Applications

• Data selection and routing in digital systems
• Parallel-to-serial data conversion
• Logic function generation
• Address multiplexing in memory systems
• Instrumentation and measurement equipment

Features

• High-speed operation: tpd = 5.5 ns (typ.) at VCC = 5V
• Low power dissipation: ICC = 8 μA (max.) at VCC = 5V
• TTL compatible inputs
• Output drive capability: 15 LSTTL loads
• Wide operating voltage range: VCC = 4.5V to 5.5V
• Functionally equivalent to the SN74ACT151

Benefits

• Reduced system propagation delays due to high speed
• Minimized power consumption, ideal for battery-powered applications
• Easy integration with TTL-based systems
• High fan-out capability, reducing the need for buffering
• Reliable operation over a wide voltage range

Additional Details

The TC74ACT151F is supplied in a 16-pin SOIC (Small Outline Integrated Circuit) package. The device is designed for operation over the industrial temperature range of -40°C to +85°C. The enable input (E) must be low to enable multiplexer operation. When E is high, the output (Y) is forced to a low state. The address inputs (A, B, C) select the data input to be routed to the output according to the following truth table:

If A=Low, B=Low, C=Low, then I0 is selected.
If A=High, B=Low, C=Low, then I1 is selected.
If A=Low, B=High, C=Low, then I2 is selected.
If A=High, B=High, C=Low, then I3 is selected.
If A=Low, B=Low, C=High, then I4 is selected.
If A=High, B=Low, C=High, then I5 is selected.
If A=Low, B=High, C=High, then I6 is selected.
If A=High, B=High, C=High, then I7 is selected.