CD74ACT139 Series

Dual 2-to-4 Line Decoder/Demultiplexer

Link to Manufacturer Page: https://www.ti.com/

Catalog

Dual 2-to-4 Line Decoder/Demultiplexer

Part	Voltage - Supply [Max]	Voltage - Supply [Min]	Circuit	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Voltage Supply Source	Mounting Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Package / Case	Package / Case	Type	Independent Circuits
Texas Instruments CD74ACT139M	5.5 V	4.5 V	1 x 2:4	-55 °C	125 °C	16-SOIC	Single Supply	Surface Mount	24 mA	24 mA	16-SOIC	0.154 in, 3.9 mm Width	Decoder/Demultiplexer	2

Key Features

• AC Types Feature 1.5-V to 5.5-V Operation and Balanced Noise Immunity at 30% of the Supply VoltageBuffered InputsIncorporate Two Enable Inputs to Simplify Cascading and/or Data ReceptionSpeed of Bipolar F, AS, and S, With Significantly Reduced Power ConsumptionBalanced Propagation Delays±24-mA Output Drive CurrentFanout to 15 F DevicesSCR-Latchup-Resistant CMOS Process and Circuit DesignExceeds 2-kV ESD Protection Per MIL-STD-883, Method 3015AC Types Feature 1.5-V to 5.5-V Operation and Balanced Noise Immunity at 30% of the Supply VoltageBuffered InputsIncorporate Two Enable Inputs to Simplify Cascading and/or Data ReceptionSpeed of Bipolar F, AS, and S, With Significantly Reduced Power ConsumptionBalanced Propagation Delays±24-mA Output Drive CurrentFanout to 15 F DevicesSCR-Latchup-Resistant CMOS Process and Circuit DesignExceeds 2-kV ESD Protection Per MIL-STD-883, Method 3015

Description

The ’ACT139 devices are dual 2-line to 4-line decoders/demultiplexers designed for 4.5-V to 5.5-V VCCoperation. These devices are designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. When used with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible. The active-low enable (G)\ input can be used as a data line in demultiplexing applications. These decoders/demultiplexers feature fully buffered inputs, each of which represents only one normalized load to its driving circuit. The ’ACT139 devices are dual 2-line to 4-line decoders/demultiplexers designed for 4.5-V to 5.5-V VCCoperation. These devices are designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. When used with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible. The active-low enable (G)\ input can be used as a data line in demultiplexing applications. These decoders/demultiplexers feature fully buffered inputs, each of which represents only one normalized load to its driving circuit.