Datasheet > SN54HCT139_15

SN54HCT139_15

更新时间： 2024-09-29 02:58:47

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德州仪器 - TI		/
页数	文件大小	规格书
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DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS

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SN54HCT139_15 数据手册

SN54HCT139, SN74HCT139

DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS

SCLS066B – MARCH 1982 – REVISED MAY 1997

SN54HCT139 . . . J OR W PACKAGE

SN74HCT139 . . . D, DB, N, OR PW PACKAGE

(TOP VIEW)

Inputs Are TTL-Voltage Compatible

Designed Specifically for High-Speed

Memory Decoders and Data Transmission

Systems

Incorporate Two Enable Inputs to Simplify

Cascading and/or Data Reception

1Y0

1Y1

1Y2

1Y3

GND

Package Options Include Plastic

Small-Outline (D), Shrink Small-Outline

(DB), Thin Shrink Small-Outline (PW), and

Ceramic Flat (W) Packages, Ceramic Chip

Carriers (FK), and Standard Plastic (N) and

Ceramic (J) 300-mil DIPs

2Y0

2Y1

2Y2

2Y3

SN54HCT139 . . . FK PACKAGE

(TOP VIEW)

description

The ’HCT139 are designed for high-performance

memory-decoding or data-routing applications

requiring very short propagation delay times. In

high-performance memory systems, these

decoders can minimize the effects of system

decoding. When employed with high-speed

memories utilizing a fast enable circuit, the delay

time of these decoders and the enable time of the

memory are usually less than the typical access

time of the memory. This means that the effective

system delay introduced by the decoders is

negligible.

20 19

1Y0

15 2Y0

9 10 11 12 13

1Y1

1Y2

2Y1

NC – No internal connection

The ’HCT139 comprise two individual 2-line to

4-line decoders in a single package. The

active-low enable (G) input can be used as a data

line in demultiplexing applications. These

decoders/demultiplexers feature fully buffered

inputs, each of which represents only one

normalized load to its driving circuit.

The SN54HCT139 is characterized for operation over the full military temperature range of –55°C to 125°C. The

SN74HCT139 is characterized for operation from –40°C to 85°C.

FUNCTION TABLE

INPUTS

OUTPUTS

SELECT

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information current as of publication date. Products conform to

specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all

parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5

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与SN54HCT139_15相关器件

型号	品牌	获取价格	描述	数据表
SN54HCT139FK	TI	获取价格	DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SN54HCT139FKR	TI	获取价格	HCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CQCC20, CERAMIC, LCC-20
SN54HCT139J	TI	获取价格	DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SN54HCT139W	TI	获取价格	DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS
SN54HCT139WR	TI	获取价格	HCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CDFP16, CERAMIC, FP-16
SN54HCT14	TI	获取价格	HEX SCHMITT-TRIGGER INVERTERS
SN54HCT14_07	TI	获取价格	HEX SCHMITT-TRIGGER INVERTERS
SN54HCT14_08	TI	获取价格	HEX SCHMITT-TRIGGER INVERTERS
SN54HCT14_10	TI	获取价格	HEX SCHMITT-TRIGGER INVERTERS
SN54HCT14FK	TI	获取价格	HEX SCHMITT-TRIGGER INVERTERS

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