The HD74HC139FP is a high-speed silicon gate CMOS decoder/demultiplexer fabricated with silicon gate CMOS technology. It achieves speeds similar to equivalent LSTTL while maintaining the low power dissipation inherent in CMOS integrated circuits. This device contains two independent two-to-four line decoders. Each decoder has two inputs (A and B) and an enable input (G). When G is high, the outputs are all high. When G is low, one of the four outputs will be low based on the binary input at A and B.

Applications

• Memory address decoding
• Data routing
• Demultiplexing applications
• Digital logic circuits

Features

• High Speed Operation: tpd = 13 ns (typ.) at VCC = 5V
• Low Power Dissipation: ICC = 4 μA (max.) at Ta = 25°C
• High Noise Immunity: VNIH = VNIL = 28 % VCC (min.)
• Output Drive Capability: 10 LSTTL Loads
• Symmetrical Output Impedance: |IOH| = IOL = 4 mA (min.)
• Balanced Propagation Delays: tPLH ≈ tPHL
• Wide Operating Voltage Range: VCC = 2 V to 6 V

Benefits

• Improved system performance due to high-speed operation.
• Reduced power consumption, leading to energy savings and cooler operation.
• Enhanced noise immunity, providing more reliable operation in noisy environments.
• Increased output drive capability for driving multiple loads.
• Simplified circuit design with symmetrical output impedance and balanced propagation delays.
• Versatile operation with a wide operating voltage range.

Additional Details

The HD74HC139FP is supplied in a SOP-16 (Small Outline Package) offering a compact footprint for space-constrained applications. It is pin-compatible with standard TTL logic devices, simplifying the replacement or upgrade of existing designs. The device is designed to operate over a wide temperature range, making it suitable for various industrial and commercial applications. Its CMOS construction provides excellent ESD protection.