Datasheet > RS8T245

RS8T245

更新时间： 2024-04-09 19:02:34

品牌	Logo	应用领域
润石 - RUNIC		转换器电平转换器
页数	文件大小	规格书
18页	680K
描述
电平转换器

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RS8T245 数据手册

RS8T245

8-Bit Dual-Supply Bus Transceiver with Configurable

Voltage Translation and 3-State Output

1 FEATURES

3 DESCRIPTIONS

This 8-bit non-inverting bus transceiver is a bidirectional

•

Control Input V_IH/V_ILLevels are

voltage-level translator and can be used to establish digital

switching compatibility between mixed-voltage systems. It

uses two separate configurable power-supply rails, Both

V_CC(A)and V_CC(B)supporting operating voltages from 1.65 V

Referenced to V_CCAVoltage

Power-Supply Range:

V_CCAand V_CCB:1.65V to 5.5V

Latch-up performance exceeds 100mA per

JESD 78, Class II

V_CCIsolation: If Either V_CCis at GND, Both

Ports are in the High-Impedance State

I_OFF: Supports Partial-Power-Down Mode

Operation

̅̅̅̅

to 5.5 V, A ports, DIR and OE tracks the V_CCAsupply and B

ports tracks the V_CCBsupply. This allows the support of both

lower and higher logic signal levels while providing

bidirectional translation capabilities between any of the

1.8V, 2.5V, 3.3V and 5.5V voltage nodes.

The

RS8T245

designed

for

asynchronous

Extended Temperature: -40°C to +125°C

communication between two data buses. The logic levels

of the direction-control (DIR) input and the output-enable

̅̅̅̅

(OE) input activate either the B-port outputs or the A-port

2 APPLICATIONS

outputs or place both output ports into the high-impedance

mode. The device transmits data from the A bus to the B

bus when the B-port outputs are activated, and from the B

bus to the A bus when the A-port outputs are activated. The

input circuitry on both A and B ports is always active and

must have a logic HIGH or LOW level applied to prevent

•

Handset

Smartphone

Tablet

Desktop PC

excess I_CCand I_CCZ

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.

The V_CCisolation feature ensures that if either V_CCinput is

at GND, all outputs are in the high-impedance state.

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.

The RS8T245 is designed so that the control pins (DIR and

̅̅̅̅

OE) are supplied by V_CCA. It operates over an ambient

temperature range of -40°C to +125°C.

Device Information ⁽¹⁾

PART

NUMBER

PACKAGE

BODY SIZE (NOM)

7.80mm×4.40mm

15.40mm×7.50mm

TSSOP24(24)

RS8T245

SOIC-24

(SOP24)(24)

(1) For all available packages, see the orderable addendum at the end

of the data sheet.

REV A.4

1 / 18

www.run-ic.com

12 3 4 5 6 7...18

中文翻译

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