Datasheet > 逻辑 > 总线驱动器/收发器> SN74HCT646NT

SN74HCT646NT

更新时间： 2024-11-25 22:15:27

品牌	Logo	应用领域
德州仪器 - TI		总线收发器输出元件
页数	文件大小	规格书
8页	156K
描述
OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

阅读下载

中文翻译

获取价格

数据手册
替代型号

如果您发现信息不准确，欢迎纠错

SN74HCT646NT 数据手册

SN54HCT646, SN74HCT646

OCTAL BUS TRANSCEIVERS AND REGISTERS

WITH 3-STATE OUTPUTS

SCLS178B – MARCH 1984 – REVISED MAY 1997

SN54HCT646 . . . JT OR W PACKAGE

SN74HCT646 . . . DW OR NT PACKAGE

(TOP VIEW)

Inputs Are TTL-Voltage Compatible

Independent Registers for A and B Buses

Multiplexed Real-Time and Stored Data

True Data Paths

CLKAB

SAB

DIR

GND

CLKBA

SBA

High-Current 3-State Outputs Can Drive up

to 15 LSTTL Loads

Package Options Include Plastic

Small-Outline (DW) and Ceramic Flat (W)

Packages, Ceramic Chip Carriers (FK), and

Standard Plastic (NT) and Ceramic (JT)

300-mil DIPs

description

The ’HCT646 consist of bus-transceiver circuits

with 3-state outputs, D-type flip-flops, and control

circuitry arranged for multiplexed transmission of

data directly from the input bus or from the internal

registers. DataontheAorBbusisclockedintothe

registers on the low-to-high transition of the

appropriate clock (CLKAB or CLKBA) input.

Figure 1 illustrates the four fundamental bus-

management functions that can be performed

with the ’HCT646.

SN54HCT646 . . . FK PACKAGE

(TOP VIEW)

28 27 26

Output-enable (OE) and direction-control (DIR)

inputs control the transceiver functions. In the

transceiver mode, data present at the

high-impedance port can be stored in either or

both registers.

A5 10

12 13 14 15 16 17 18

The select-control (SAB and SBA) inputs can

multiplex stored and real-time (transparent mode)

data. DIR determines which bus receives data

when OE is active (low). In the isolation mode (OE

high), A data can be stored in one register and/or

B data can be stored in the other register.

NC – No internal connection

When an output function is disabled, the input function is still enabled and can be used to store and transmit

data. Only one of the two buses, A or B, can be driven at a time.

The SN54HCT646 is characterized for operation over the full military temperature range of –55°C to 125°C.

The SN74HCT646 is characterized for operation from –40°C to 85°C.

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 6 7 8

中文翻译

下载PDF

SN74HCT646NT 替代型号

型号	品牌	替代类型	描述	数据表
SN74HCT646DWE4	TI	完全替代	HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOIC-24
SN74HCT646DW	TI	完全替代	OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

与SN74HCT646NT相关器件

型号	品牌	获取价格	描述	数据表
SN74HCT646NT-00	TI	获取价格	HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDIP24
SN74HCT646NT3	TI	获取价格	OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN74HCT646NTP3	TI	获取价格	IC,BUS TRANSCEIVER,SINGLE,8-BIT,HCT-CMOS,DIP,24PIN,PLASTIC
SN74HCT652	TI	获取价格	OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN74HCT652DW	TI	获取价格	OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN74HCT652DW-00	TI	获取价格	HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
SN74HCT652DW3	TI	获取价格	IC,BUS TRANSCEIVER,SINGLE,8-BIT,HCT-CMOS,SOP,24PIN,PLASTIC
SN74HCT652DWE4	TI	获取价格	HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOIC-24
SN74HCT652DWG4	TI	获取价格	Octal Bus Transceivers And Registers With 3-State Outputs 24-SOIC -40 to 85
SN74HCT652DWR	TI	获取价格	Octal Bus Transceivers And Registers With 3-State Outputs 24-SOIC -40 to 85

与SN74HCT646NT相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

45
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

34
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

62
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

59

产品中心

服务支持

精选活动

关于我们

帮助中心

SN74HCT646NT

SN74HCT646NT 数据手册

SN74HCT646NT 替代型号

与SN74HCT646NT相关器件

与SN74HCT646NT相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

SN74HCT646NT

SN74HCT646NT 数据手册

SN74HCT646NT 替代型号

与SN74HCT646NT相关器件

与SN74HCT646NT相关文章

您还可以找

您在本页遇到什么问题？