Datasheet > 74HC138_12

74HC138_12

更新时间： 2024-11-02 12:26:07

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
19页	211K
描述
3-to-8 line decoder/demultiplexer; inverting

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74HC138_12 数据手册

74HC138; 74HCT138

3-to-8 line decoder/demultiplexer; inverting

Rev. 4 — 27 June 2012

Product data sheet

1. General description

The 74HC138; 74HCT138 is a high-speed Si-gate CMOS device and is pin compatible

with Low-power Schottky TTL (LSTTL).

The 74HC138; 74HCT138 decoder accepts three binary weighted address inputs (A0, A1

and A3) and when enabled, provides 8 mutually exclusive active LOW outputs (Y0 to Y7).

The 74HC138; 74HCT138 features three enable inputs: two active LOW (E1 and E2) and

one active HIGH (E3). Every output is HIGH unless E1 and E2 are LOW and E3 is HIGH.

This multiple enable function allows easy parallel expansion of the 74HC138; 74HCT138

to a 1-of-32 (5 lines to 32 lines) decoder with just four 74HC138; 74HCT138 ICs and one

inverter.

The 74HC138; 74HCT138 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. Permanently tie unused enable inputs to their appropriate active HIGH- or

LOW-state.

The 74HC138; 74HCT138 is identical to the 74HC238; 74HCT238 but has inverting

outputs.

2. Features and benefits

 Demultiplexing capability

 Multiple input enable for easy expansion

 Complies with JEDEC standard no. 7A

 Ideal for memory chip select decoding

 Active LOW mutually exclusive outputs

 ESD protection:

 HBM EIA/JESD22-A114F exceeds 2000 V

 MM EIA/JESD22-A115-A exceeds 200 V

 Multiple package options

 Specified from −40 °C to +85 °C and from −40 °C to +125 °C

12 3 4 5 6 7...19

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型号	品牌	获取价格	描述	数据表
74HC138BQ	NXP	获取价格	3-to-8 line decoder/demultiplexer; inverting
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74HC138BQ,115	NXP	获取价格	74HC(T)138 - 3-to-8 line decoder/demultiplexer; inverting QFN 16-Pin
74HC138BQ-Q100	NXP	获取价格	3-to-8 line decoder/demultiplexer; inverting
74HC138BQ-Q100	NEXPERIA	获取价格	3-to-8 line decoder/demultiplexer; invertingProduction
74HC138BQ-Q100,115	NXP	获取价格	74HC(T)138-Q100 - 3-to-8 line decoder/demultiplexer; inverting QFN 16-Pin
74HC138D	NXP	获取价格	3-to-8 line decoder/demultiplexer; inverting
74HC138D	NEXPERIA	获取价格	3-to-8 line decoder/demultiplexer; invertingProduction
74HC138D	TOSHIBA	获取价格	3-to-8 Line Decoder, SOIC16
74HC138D,652	NXP	获取价格	74HC(T)138 - 3-to-8 line decoder/demultiplexer; inverting SOP 16-Pin