SN74CB3T1G125DCKR datasheet(2/16 Pages) TI1

部品番号	SN74CB3T1G125DCKR

部品情報	SINGLE FET BUS SWITCH 2.5-V/3.3-V LOW-VOLTAGE SWITCH WITH 5-V-TOLERANT LEVEL SHIFTER

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DESCRIPTION/ORDERING INFORMATION (CONTINUED)

VCC

≈VCC

5.5 V

0 V

NOTE A: If the input high voltage (VIH) level is greater than or equal to VCC – 1 V, and less than or equal to 5.5 V, then the output high voltage

(VOH) level will be equal to approximately the VCC voltage level.

Input Voltages

Output Voltages

0 V

≈VCC − 1 V

VCC

IN

OUT

CB3T

OE

B

A

SW

2

1

4

SN74CB3T1G125

SINGLE FET BUS SWITCH 2.5-V/3.3-V LOW-VOLTAGE SWITCH

WITH 5-V-TOLERANT LEVEL SHIFTER

SCDS150A – OCTOBER 2003 – REVISED SEPTEMBER 2006

Figure 1. Typical DC Voltage Translation Characteristics

This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging

current will not backflow through the device when it is powered down. The device has isolation during power off.

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

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

FUNCTION TABLE

INPUT

INPUT/OUTPUT

FUNCTION

OE

A

L

B

A port = B port

H

Z

Disconnect

LOGIC DIAGRAM (POSITIVE LOGIC)

2

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