74HC137D

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74HC137D

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Encoders, Decoders, Multiplexers & Demultiplexers 3-TO-8 DECOD/DEMUX INVERTING

  • メーカーNexperia

  • メーカー品番 #74HC137D

  • データシート 74HC137D DataSheet

  • 在庫状況29791

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仕様

属性
Standard Pack Qty 50

概要

Description

The 74HC137D is a high-speed Si-gate CMOS device that belongs to the 74HC series. It is a 3-to-8 line decoder/demultiplexer with latches on the address inputs. This component is designed for use in high-performance applications and offers low power consumption, making it suitable for various digital systems. The device has three binary select inputs (A0, A1, A2), an active-low enable input (E), and three active-high enable inputs (G1, G2A, G2B).
When the enable input E is low, the device functions as a 3-to-8 line decoder, with the binary combination of the select inputs determining which one of the eight outputs (Y0 to Y7) will be active high. The enable and latch features allow for more flexible control over data flow, particularly in applications involving memory addressing, data routing, and code conversion. The 74HC137D is often used in digital circuits where efficient address decoding is required, ensuring reliable and efficient operation.

Equivalent

The 74HC137D is a 3-to-8 line decoder with address latches, often used in digital circuits. Its equivalents include the 74HCT137, 74LS137, and CD74HC137. These ICs generally have similar functionality but may differ in electrical characteristics like logic levels and power consumption, so it's important to check datasheets for compatibility in specific applications.

Features

The 74HC137D is a high-speed CMOS device that operates as a 3-to-8 line decoder/demultiplexer with address latches. Key features include:
1. High-Speed Performance: It offers fast switching times, making it suitable for high-speed applications.
2. CMOS Technology: Low power consumption and high noise immunity.
3. Latch Capability: Includes latches for the address inputs, allowing the address to be stored and used for stable output.
4. Enable Inputs: Two active-low and one active-high enable inputs for flexible cascading and enabling/disabling of the device.
5. Wide Operating Voltage: Typically operates within a voltage range of 2V to 6V.
6. Output Current: Can source or sink a moderate current suitable for driving standard loads.
7. Pin Configuration: Available in a small-outline surface-mount package with a standard pin configuration for easy integration in designs.
8. Temperature Range: Functions reliably over a wide temperature range, making it suitable for various environments.
These features make the 74HC137D a versatile choice for applications requiring efficient decoding and signal routing.

Pinout

The 74HC137D is a 16-pin integrated circuit used as a 3-to-8 line decoder with address latch. It belongs to the 74HC series, which is a high-speed CMOS logic family. Here is the pin configuration and function:
1. Pins 1-3 (A0, A1, A2): Address inputs.
2. Pin 4 (LE): Latch enable input. When high, the address inputs are latched on the rising edge.
3. Pin 5 (E1): Active low enable input.
4. Pin 6 (E2): Active low enable input.
5. Pin 7 (E3): Active high enable input.
6. Pin 8 (GND): Ground.
7. Pins 9-11, 13-15 (Q0-Q7): Output lines.
8. Pin 12 (NC): Not connected.
9. Pin 16 (VCC): Positive supply voltage.
The device decodes the address inputs into one of eight mutually exclusive outputs, providing a low level at the selected output, while the others remain high, enabled by the LE, E1, E2, and E3 lines.

Manufacturer

The 74HC137D is manufactured by Nexperia, a global semiconductor company. Nexperia specializes in producing discrete components, logic devices, and MOSFETs. Originally part of NXP Semiconductors, the company became independent in 2017. Nexperia is known for its efficient, high-reliability semiconductor solutions, serving a range of industries, including automotive, mobile, computing, and industrial.

Application

The 74HC137D is a high-speed CMOS 3-to-8 line decoder/demultiplexer with address latches. It is commonly used in applications requiring data routing and signal demultiplexing. This includes digital data distribution systems, memory address decoding in microprocessor systems, and control logic implementation. It is also utilized in designing complex logic systems for embedded applications, and in communication systems for channel selection. Its ability to latch addresses makes it suitable for applications needing stable outputs even when the input changes, such as in multi-level addressing schemes.

Package

The 74HC137D is a surface-mount package type known as SOIC (Small Outline Integrated Circuit), typically with 16 pins. It's part of the 74HC series, which are high-speed CMOS logic ICs.

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