SN54LVTH646

更新时间： 2024-11-19 23:03:07

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
10页	139K
描述
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

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SN54LVTH646 数据手册

SN54LVTH646, SN74LVTH646

3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS

WITH 3-STATE OUTPUTS

SCBS705E – AUGUST 1997 – REVISED APRIL 1999

SN54LVTH646 . . . JT OR W PACKAGE

SN74LVTH646 . . . DB, DGV, DW, OR PW PACKAGE

(TOP VIEW)

State-of-the-Art Advanced BiCMOS

Technology (ABT) Design for 3.3-V

Operation and Low Static-Power

Dissipation

CLKAB

SAB

DIR

GND

and Power-Up 3-State Support Hot

CLKBA

SBA

off

Insertion

Bus Hold on Data Inputs Eliminates the

Need for External Pullup/Pulldown

Resistors

Support Mixed-Mode Signal Operation

(5-V Input and Output Voltages With

3.3-V V

)

Support Unregulated Battery Operation

Down to 2.7 V

Typical V

< 0.8 V at V

(Output Ground Bounce)

OLP

= 3.3 V, T = 25°C

SN54LVTH646 . . . FK PACKAGE

(TOP VIEW)

Latch-Up Performance Exceeds 500 mA Per

JESD 17

ESD Protection Exceeds 2000 V Per

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

28 27 26

Package Options Include Plastic

Small-Outline (DW), Shrink Small-Outline

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

Thin Very Small-Outline (DGV) Packages,

Ceramic Chip Carriers (FK), Ceramic Flat

(W) Package, and Ceramic (JT) DIPs

12 13 14 15 16 17 18

description

These bus transceivers and registers are

designed specifically for low-voltage (3.3-V) V

operation, but with the capability to provide a TTL

interface to a 5-V system environment.

NC – No internal connection

The ’LVTH646 devices consist of bus transceiver circuits, D-type flip-flops, and control circuitry arranged for

multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B

bus is clocked into the 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 ’LVTH646.

Output-enable (OE) and direction-control (DIR) inputs are provided to control the transceiver functions. In the

transceiver mode, data present at the high-impedance port can be stored in either register or in both.

The select-control (SAB and SBA) inputs can multiplex stored and real-time (transparent mode) data. The

direction control (DIR) determines which bus receives data when OE is 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.

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.

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.

PRODUCTION DATA information is 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...10

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SN54LVTH646 替代型号

型号	品牌	替代类型	描述	数据表
SN74LVTH646	TI	功能相似	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

与SN54LVTH646相关器件

型号	品牌	获取价格	描述	数据表
SN54LVTH646_15	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN54LVTH646FK	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN54LVTH646JT	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN54LVTH646W	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN54LVTH652	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN54LVTH652_08	TI	获取价格	3.3V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN54LVTH652FK	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN54LVTH652JT	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN54LVTH652W	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN54LVTH652WR	TI	获取价格	LVT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, CDFP24, CERAMIC, DFP-24

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