74LCX646

更新时间： 2024-11-06 22:56:19

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
10页	107K
描述
Low Voltage Octal Transceiver/Register with 5V Tolerant Inputs and Outputs

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74LCX646 数据手册

February 1994

Revised March 2001

74LCX646

Low Voltage Octal Transceiver/Register

with 5V Tolerant Inputs and Outputs

General Description

Features

■ 5V tolerant inputs and outputs

The LCX646 consists of registered bus transceiver circuits,

D-type flip-flops, and control circuitry providing multiplexed

transmission of data directly from the input bus or from the

internal storage registers. Data on the A or B bus will be

loaded into the respective registers on the LOW-to-HIGH

transition of the appropriate pin (CPAB or CPBA) (see

Functional Description).

■ 2.3V − 3.6V V_CCspecifications provided

■ 7.0 ns t_PDmax (V_CC= 3.3V), 10 µA I_CCmax

■ Power down high impedance inputs and outputs

■ Supports live insertion/withdrawal (Note 1)

■ ±24 mA output drive (V_CC= 3.0V)

The LCX646 is designed for low voltage (2.5V or 3.3V) V_CC

■ Implements patented noise/EMI reduction circuitry

■ Latch-up performance exceeds 500 mA

■ ESD performance:

applications with capability of interfacing to a 5V signal

environment.

The LCX646 is fabricated with an advanced CMOS tech-

nology to achieve high speed operation while maintaining

CMOS low power dissipation.

Human body model > 2000V

Machine model > 200V

Note 1: To ensure the high-impedance state during power up or down, OE

should be tied to V_CCthrough a pull-up resistor: the minimum value or the

resistor is determined by the current-sourcing capability of the driver.

Ordering Code:

Order Number Package Number

Package Description

74LCX646WM

74LCX646MSA

74LCX646MTC

M24B

MSA24

MTC24

24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide

24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Pin Descriptions

Pin Names

A₀–A₇

Description

Data Register A Inputs

Data Register A Outputs

Data Register B Inputs

Data Register B Outputs

Clock Pulse Inputs

B₀–B₇

CPAB, CPBA

SAB, SBA

Transmit/Receive Inputs

Output Enable Input

DIR

Direction Control Input

DS011997

www.fairchildsemi.com

12 3 4 5 6 7...10

中文翻译

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与74LCX646相关器件

型号	品牌	获取价格	描述	数据表
74LCX646_04	STMICROELECTRONICS	获取价格	LOW VOLT. CMOS OCTAL BUS TRANSCEIVER/REGISTER WITH 5 VOLT TOLERANT INPUTS AND OUTPUTS(3-ST
74LCX646CW	FAIRCHILD	获取价格	Registered Bus Transceiver, LVC/LCX/Z Series, 1-Func, 8-Bit, True Output, CMOS
74LCX646M	ETC	获取价格	Single 8-bit Bus Transceiver
74LCX646M1R	STMICROELECTRONICS	获取价格	LOW VOLT. CMOS OCTAL BUS TRANSCEIVER/REGISTER WITH 5 VOLT TOLERANT INPUTS AND OUTPUTS(3-ST
74LCX646MSA	FAIRCHILD	获取价格	Low Voltage Octal Transceiver/Register with 5V Tolerant Inputs and Outputs
74LCX646MSAX	FAIRCHILD	获取价格	Low Voltage Octal Transceiver/Register with 5V Tolerant Inputs and Outputs
74LCX646MTC	FAIRCHILD	获取价格	Low Voltage Octal Transceiver/Register with 5V Tolerant Inputs and Outputs
74LCX646MTCX	FAIRCHILD	获取价格	Low Voltage Octal Transceiver/Register with 5V Tolerant Inputs and Outputs
74LCX646MTR	STMICROELECTRONICS	获取价格	暂无描述
74LCX646RM13TR	STMICROELECTRONICS	获取价格	LOW VOLT. CMOS OCTAL BUS TRANSCEIVER/REGISTER WITH 5 VOLT TOLERANT INPUTS AND OUTPUTS(3-ST

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