What is the Additional Feature ?

Name: SN74HC138NS
Brand: Texas Instruments
SKU: SN74HC138NS
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 SN74HC138NS

Part No.:: SN74HC138NS

Manufacturer:: Texas Instruments

Package:: 16-SOIC (0.209, 5.30mm Width)

Datasheet:: SN74HC138NS.pdf

Description:: IC DECODER/DEMUX 1 X 3:8 16SO

In Stock:: 3885

Quantity:: Add To Cart

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SN74HC138NS Specifications

Packaging:
Tube
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 (TA)
MountingType:
Surface Mount

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SN74HC138NS information

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SN74HC138NS Typical application Circuitry

SN74HC138NS

The SN74HC138NS is a high-speed CMOS 3-to-8 line decoder/demultiplexer. This chip is widely used in digital systems for its ability to decode and demultiplex signals, making it crucial for addressing and selecting among multiple lines, such as in memory chip selection, data multiplexing, and for control line applications.

Applications: The SN74HC138NS is typically used in systems that require multiple data line selection, such as in computer systems, microprocessor-based systems, and digital signal processing.

Parameter Features: This device has several key features

- High-speed CMOS technology.

- Low power consumption.

- 3-to-8 line decoder/demultiplexing capability.

- Wide operating voltage range.

- High noise immunity.

Example Application Circuit - Memory Chip Selection:

1. Input Connections: Connect A0, A1, and A2 pins of SN74HC138NS to the output of the microprocessor or the system that provides the selection signal.

2. Enable Pins Configuration: Connect G1 to ground and G2A and G2B to Vcc to enable the decoder.

3. Output to Memory Chips: Connect one of the eight output lines (Y0 to Y7) to the enable or chip select pin of the memory ICs.

4. Connections to the Power Supply: GND should be linked to ground and Vcc to the positive supply.

5. Decoding Logic: The decoder outputs are active low; thus, when the microprocessor selects a line, the corresponding output pin goes low, enabling the selected memory chip.

6. Pull-up Resistors: It's advisable to use pull-up resistors on the output lines to ensure a defined logic level when the outputs are inactive.

It is essential to take into account aspects like power supply stability, signal integrity, and interference while designing circuits utilizing the SN74HC138NS. To filter noise, appropriate decoupling capacitors should be placed close to the power pins. Additionally, in order to lower the possibility of electromagnetic interference, the plan should minimize the length of high-speed transmission routes.

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6. What is the process for return or replacement of SN74HC138NS?

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 SN74HC138NS we delivered, we will accept the replacement or return of the SN74HC138NS 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 SN74HC138NS.

(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