74HCT138BQ

更新时间： 2024-02-17 18:08:13

品牌	Logo	应用领域
恩智浦 - NXP		逻辑集成电路驱动
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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74HCT138BQ 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
74HCT138BQ,115	NXP	获取价格	74HC(T)138 - 3-to-8 line decoder/demultiplexer; inverting QFN 16-Pin
74HCT138BQ-Q100	NXP	获取价格	3-to-8 line decoder/demultiplexer; inverting
74HCT138BQ-Q100	NEXPERIA	获取价格	3-to-8 line decoder/demultiplexer; invertingProduction
74HCT138BQ-Q100,11	NXP	获取价格	74HC(T)138-Q100 - 3-to-8 line decoder/demultiplexer; inverting QFN 16-Pin
74HCT138BQ-Q100,115	NXP	获取价格	Decoder/Driver, HCT Series, Inverted Output, CMOS, PQCC16
74HCT138D	NXP	获取价格	3-to-8 line decoder/demultiplexer; inverting
74HCT138D	NEXPERIA	获取价格	3-to-8 line decoder/demultiplexer; invertingProduction
74HCT138D,652	NXP	获取价格	74HC(T)138 - 3-to-8 line decoder/demultiplexer; inverting SOP 16-Pin
74HCT138DB	NXP	获取价格	3-to-8 line decoder/demultiplexer; inverting
74HCT138D-Q100	NXP	获取价格	3-to-8 line decoder/demultiplexer; inverting