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产品描述
3-to-8 line decoder, demultiplexer
inverting - Description: 3-to-8 Line Decoder/Demultiplexer
Inverting
Logic switching levels: CMOS
Number of pins: 16
Output drive capability: +/- 5.2 mA
Power dissipation considerations: Low Power or Battery Applications
Propagation delay: 12@5V ns
Voltage: 2.0-6.0 V
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FEATURES
● Demultiplexing capability
● Multiple input enable for easy expansion
● Ideal for memory chip select decoding
● Active LOW mutually exclusive outputs
● Output capability: standard
● ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT138 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL).They are specified in compliance with JEDEC standard no.7A.
The 74HC/HCT138 decoders accept three binary weighted address inputs(A0, A1, A2) and when enabled,provide 8 mutually exclusive active LOW outputs (Y0 to Y7).
The “138"features three enable inputs: two active Low(E1 and E2)and one active HIGH(E3).Every output will be HIGH unless E1 and E2 are LOW and E3 is HIGH.
This multiple enable function allows easy parallel expansion of the “138" to a 1-of-32 (5 lines to 32 lines) decoder with just four “138" ICs and one inverter.
The ”138" can be used as an eight output demultiplexer by using one of the active Low enable inputs as the data input and the remaining enable inputs as strobes. Unused enable inputs must be permanently tied to their appropriate active HIGH or LOW state.
The "138" is identical to the "238" but has inverting outputs.
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有1088个来至China的买家评价
Lisa Edwards
Length of registration:7 years
I recently purchased the integrated circuit 74HC138N from Utsource and I'm very pleased with the product. The circuit was well packaged and arrived quickly. The circuit was tested and worked perfectly. I'm very satisfied with the qu of the product and the customer service provided by Utsource. Highly recommended!
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03/17/2023
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74HC138N
74HC138N has several brands around the world that may have alternate names for 74HC138N due to regional differences or acquisition. 74HC138N may also be known as the following names:
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