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The 74F538N is a high-speed 3-to-8 line decoder/demultiplexer IC from the 74F series of logic devices.

Manufacturer:

• Fairchild Semiconductor (now part of ON Semiconductor)

Key Specifications:

• Logic Family: 74F (Fast TTL)
• Function: 3-to-8 Line Decoder/Demultiplexer
• Supply Voltage (VCC): 4.5V to 5.5V (Nominal 5V)
• Operating Temperature Range: 0°C to +70°C
• Input Current (High): 20μA (Max)
• Input Current (Low): 0.6mA (Max)
• Output Current (High): -1mA (Max)
• Output Current (Low): 20mA (Max)
• Propagation Delay: Typically 5.5ns (Max 9ns)
• Package Type: DIP-16 (Plastic Dual In-Line Package)

Description:

The 74F538N is a decoder/demultiplexer that converts a 3-bit binary input into one of eight mutually exclusive outputs. It features three enable inputs (two active-low and one active-high) for flexible control.

Features:

• High-Speed Operation: Optimized for fast switching applications.
• Active-Low Outputs: All eight outputs are active-low (Y0-Y7).
• Multiple Enable Inputs:
• G1 (Active-High Enable)
• G2A, G2B (Active-Low Enables)
• TTL-Compatible Inputs & Outputs
• Low Power Consumption: Compared to standard TTL.

This IC is commonly used in digital systems for address decoding, memory selection, and data routing applications.

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