SN74CB3T1G125_15 Datasheet, PDF (2/16 Pages) Texas Instruments – SINGLE FET BUS SWITCH 2.5-V/3.3-V LOW-VOLTAGE SWITCH WITH 5-V-TOLERANT LEVEL SHIFTER

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
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
V_CC
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5.5 V
V_CC
≈V_CC − 1 V
IN
OUT
CB3T
≈V_CC
≈V_CC − 1 V
0V
0V
Input Voltages
Output Voltages
NOTE A: If the input high voltage (V_IH) level is greater than or equal to V_CC – 1 V, and less than or equal to 5.5 V, then the output high voltage
(V_OH) level will be equal to approximately the V_CC voltage level.
Figure 1. Typical DC Voltage Translation Characteristics
This device is fully specified for partial-power-down applications using I_off. The I_off 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 V_CC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
INPUT
OE
L
H
FUNCTION TABLE
INPUT/OUTPUT
A
B
Z
FUNCTION
A port = B port
Disconnect
LOGIC DIAGRAM (POSITIVE LOGIC)
2
A
4
SW
B
1
OE
2
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