Datasheet > 逻辑 > 总线驱动器/收发器> SN74LVCHR32245A

SN74LVCHR32245A

更新时间： 2024-01-06 11:39:23

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
11页	249K
描述
32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

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SN74LVCHR32245A 数据手册

SN74LVCHR32245A

32-BIT BUS TRANSCEIVER

WITH 3-STATE OUTPUTS

www.ti.com

SCES601–AUGUST 2004–REVISED SEPTEMBER 2005

FEATURES

•

Member of the Texas Instruments Widebus+™

Family

•

I_offSupports Partial-Power-Down Mode

Operation

•

Operates From 1.65 V to 3.6 V

Inputs Accept Voltages to 5.5 V

Max t_pdof 4.8 ns at 3.3 V

Supports Mixed-Mode Signal Operation on All

Ports (5-V Input/Output Voltage With 3.3-V

V_CC

)

•

Other Products to Consider: SN74LVC32245,

SN74LVCH32245A, SN74LVCR32245A

Input and Output Ports Have Equivalent 26-Ω

Series Resistors, So No External Resistors

Are Required

Latch-Up Performance Exceeds 250 mA Per

JESD 17

•

Typical V_OLP(Output Ground Bounce) <0.8 V

at V_CC= 3.3 V, T_A= 25°C

ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

Typical V_OHV(Output V_OHUndershoot) >2 V at

V_CC= 3.3 V, T_A= 25°C

Bus Hold on Data Inputs Eliminates the Need

for External Pullup/Pulldown Resistors

– 1000-V Charged-Device Model (C101)

DESCRIPTION/ORDERING INFORMATION

This 32-bit (quad-octal) noninverting bus transceiver is designed for 1.65-V to 3.6-V V_CCoperation.

The SN74LVCHR32245A is designed for asynchronous communication between data buses. The

control-function implementation minimizes external timing requirements.

This device can be used as four 8-bit transceivers, two 16-bit transceivers, or one 32-bit transceiver. It allows

data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the

direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses

are effectively isolated.

The data I/Os and control inputs are overvoltage tolerant. This feature allows the use of this device for down

translation in a mixed-voltage environment.

The outputs, which are designed to sink up to 12 mA, include equivalent 26-Ω resistors to reduce overshoot and

undershoot.

This device is fully specified for partial-power-down applications using I_off. The I_offcircuitry disables the outputs,

preventing damaging current backflow through the device when it is powered down.

To ensure the high-impedance state during power up or power down, OE should be tied to V_CCthrough a pullup

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or

pulldown resistors with the bus-hold circuitry is not recommended. The bus-hold circuitry is part of the input

circuit and is not disabled by OE or DIR.

ORDERING INFORMATION

T_A

PACKAGE⁽¹⁾

ORDERABLE PART NUMBER

SN74LVCHR32245AKR

TOP-SIDE MARKING

LFBGA – GKE

LFBGA – ZKE (Pb-free)

–40°C to 85°C

Tape and reel

LQ245A

74LVCHR32245AZKER

(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

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.

Widebus+ is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...11

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与SN74LVCHR32245A相关器件

型号	品牌	获取价格	描述	数据表
SN74LVCHR32245AKR	TI	获取价格	32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SN74LVCR162245	TI	获取价格	16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SN74LVCR162245_06	TI	获取价格	16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SN74LVCR162245DGG	TI	获取价格	16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SN74LVCR162245DGGR	TI	获取价格	16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SN74LVCR162245DL	TI	获取价格	16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SN74LVCR162245DLR	TI	获取价格	16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SN74LVCR162245KR	TI	获取价格	16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SN74LVCR16245A	TI	获取价格	16 BIT BUS TRANSCEIVER WITH 3 STATE OUTPUTS
SN74LVCR16245A_07	TI	获取价格	16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

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