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SN74LVT646DB

更新时间： 2024-11-08 23:06:23

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	157K
描述
3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

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SN74LVT646DB 数据手册

SN54LVT646, SN74LVT646

3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS

WITH 3-STATE OUTPUTS

SCBS140D – MAY 1992 – REVISED JULY 1995

SN54LVT646 . . . JT OR W PACKAGE

SN74LVT646 . . . DB, 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

Support Mixed-Mode Signal Operation (5-V

Input and Output Voltages With 3.3-V V

CLKBA

SBA

)

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

ESD Protection Exceeds 2000 V Per

MIL-STD-883C, Method 3015; Exceeds

200 V Using Machine Model

(C = 200 pF, R = 0)

GND

Latch-Up Performance Exceeds 500 mA

Per JEDEC Standard JESD-17

SN54LVT646 . . . FK PACKAGE

(TOP VIEW)

Bus-Hold Data Inputs Eliminate the Need

for External Pullup Resistors

Support Live Insertion

Package Options Include Plastic

Small-Outline (DW), Shrink Small-Outline

(DB), and and Thin Shrink Small-Outline

(PW) Packages, Ceramic Chip Carriers

(FK), Ceramic Flat (W) Packages, and

Ceramic (JT) DIPs

28 27 26

21 B3

description

These bus transceivers and registers are

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

12 13 14 15 16 17 18

operation, but with the capability to provide a TTL

interface to a 5-V system environment.

NC – No internal connection

The ’LVT646 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 ′LVT646.

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 may 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 may be stored in one register and/or B data may be stored in the other register.

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

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

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.

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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与SN74LVT646DB相关器件

型号	品牌	获取价格	描述	数据表
SN74LVT646DBLE	TI	获取价格	3.3-V ABT Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85
SN74LVT646DW	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN74LVT646DWR	TI	获取价格	3.3-V ABT Octal Bus Transceivers And Registers With 3-State Outputs 24-SOIC -40 to 85
SN74LVT646PW	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN74LVT646PWLE	TI	获取价格	3.3-V ABT Octal Bus Transceivers And Registers With 3-State Outputs 24-TSSOP -40 to 85
SN74LVT652	TI	获取价格	3.3-V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
SN74LVT652DB	TI	获取价格	LVT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
SN74LVT652DBLE	TI	获取价格	3.3-V ABT Octal Bus Transceivers And Registers With 3-State Outputs 24-SSOP -40 to 85
SN74LVT652DBR	TI	获取价格	LVT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, PLASTIC, SSOP-24
SN74LVT652DW	TI	获取价格	3.3-V ABT Octal Bus Transceivers And Registers With 3-State Outputs 24-SOIC -40 to 85

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