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Name: SN74HC138DR
Brand: Texas Instruments
SKU: SN74HC138DR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments SN74HC138DR

Part No.:: SN74HC138DR

Manufacturer:: Texas Instruments

Package:: 16-SOIC (0.154, 3.90mm Width)

Datasheet:: SN74HC138DR.pdf

Description:: IC DECODER/DEMUX 1X3:8 16SOIC

In Stock:: 385

Quantity:: Add To Cart

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SN74HC138DR Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
74HC
ProductStatus:
Active
Type:
Decoder/Demultiplexer
Circuit:
1 x 3:8
IndependentCircuits:
1
Current-OutputHighLow:
5.2mA, 5.2mA
VoltageSupplySource:
Single Supply
Voltage-Supply:
2V ~ 6V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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SN74HC138DR information

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SN74HC138DR Typical application Circuitry

SN74HC138DR

The SN74HC138DR is a high-speed CMOS device known as a 3-to-8 line decoder/demultiplexer. This integrated circuit (IC) is commonly used in applications that require the conversion of a 3-bit binary input to one of eight outputs, making it ideal for a variety of multiplexing and demultiplexing scenarios.

Applications of SN74HC138DR:

1. Memory Address Decoding: The SN74HC138DR is often used in systems with multiple memory blocks to select a specific memory address.

2. Control Line Multiplexing: In microcontroller-based systems, it helps in controlling multiple lines using fewer pins from the microcontroller.

3. Device Selection in Bus Systems: It's used for selecting specific devices connected to a bus in a computer system.

Key Features and Parameters:

- Operating Voltage Range: Typically 2 V to 6 V.

- Quick propagation delays for high-speed performance.

- Low Power Consumption: Fits gadgets that run on batteries.

- Output Current: High current drive capability.

Detailed Circuit Connection (Example: Memory Address Decoding):

1. Input Connections:

- A0, A1, A2 (Pins 1, 2, 3): Connect these pins to the 3-bit address output from the microcontroller or address bus.

2. Enable Pins Configuration:

- G1 (Pin 6), G2A (Pin 4), G2B (Pin 5): Connect these to a logic low (GND) to enable the decoder.

3. Output to Memory Blocks:

- Y0 to Y7 (Pins 15, 14, 13, 12, 11, 10, 9, 7): Each output pin connects to an enable input of a memory block.

4. Power Supply:

- Vcc (Pin 16): Connect to the positive supply voltage.

- GND (Pin 8): Connect to the ground.

Design Considerations:

- Power Supply Stability: Ensure a stable power supply within the operating voltage range.

- Input Signal Integrity: Maintain clean, noise-free input signals.

- Thermal Management: In high-frequency applications, consider heat dissipation.

- Output Load: Be mindful of the current load on each output.

By incorporating these aspects, the SN74HC138DR can be effectively utilized in various electronic applications, maximizing its potential for efficient decoding and multiplexing tasks.

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6. What is the process for return or replacement of SN74HC138DR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the SN74HC138DR we delivered, we will accept the replacement or return of the SN74HC138DR only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of SN74HC138DR.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations