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Vedi Specifiche Tecniche

CD74HCT138E +BOM

Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder

Produttore:

Texas Instruments
ProduttorePart #:

CD74HCT138E
Scheda dati:

CD74HCT138E Scheda dati (PDF)
Technology Family:

HCT
Number Of Channels:

1
Operating Temperature Range (°C):

-55 to 125
Rating:

Catalog
EDA/CAD Modelli:

Richiedi modelli CAD gratuiti per CD74HCT138E

CD74HCT138E Descrizione generale

Texas Instruments' CD74HCT138E is a reliable 3-to-8 line decoder/demultiplexer IC designed for address decoding and data routing applications. Its compatibility with standard TTL logic levels, low power consumption, and active low enable input make it a versatile component for digital systems. With low propagation delay for fast decoding and various package options for flexible circuit design, this IC is well-suited for memory address decoding, data routing, interface control, and signal demultiplexing tasks. Consider alternatives like the 74HC138 and CD4514 for similar functionalities in more complex systems

Caratteristiche principali

Select One Of Eight Data Outputs Active Low for 138, Active High for 238
I/O Port or Memory Selector
Three Enable Inputs to Simplify Cascading
Typical Propagation Delay of 13ns at VCC = 5V, CL = 15pF, TA = 25°C
Fanout (Over Temperature Range)
- Standard Outputs . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . 15 LSTTL Loads
Wide Operating Temperature Range . . . –55°C to 125°C
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL Logic ICs
HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il1μA at VOL, VOH

Data sheet acquired from Harris Semiconductor

Description

The ’HC138, ’HC238, ’HCT138, and ’HCT238 are high speed silicon gate CMOS decoders well suited to memory address decoding or data routing applications. Both circuits feature low power consumption usually associated with CMOS circuitry, yet have speeds comparable to low power Schottky TTL logic. Both circuits have three binary select inputs (A0, A1 and A2). If the device is enabled, these inputs determine which one of the eight normally high outputs of the HC/HCT138 series will go low or which of the normally low outputs of the HC/HCT238 series will go high.

Two active low and one active high enables (E1\, E2\, and E3) are provided to ease the cascading of decoders. The decoder’s 8 outputs can drive 10 low power Schottky TTL equivalent loads.

Specifiche

Technology family	HCT	Number of channels	1
Operating temperature range (°C)	-55 to 125	Rating	Catalog
Supply current (max) (µA)	160

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Valutazioni e recensioni

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G**n 08/13/2023

it is CH340G chip but the PCBA is not suitable for programming arduino pro mini... but after little bit of reasearch i was able to hack it the way i want it to be :)

I**c 07/26/2023

I recommend the order satisfied with the seller.

J**n 03/01/2023

Excellente seller Fast Shiping

D**n 10/30/2022

Thank you. Order received. All ok. Delivered very quickly.