Datasheet

www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
V
CC
≈V
CC
5.5 V
0 V
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.
Input Voltages Output Voltages
0 V
≈V
CC
− 1 V ≈V
CC
− 1 V
V
CC
IN OUT
CB3T
OE
BA 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 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.
FUNCTION TABLE
INPUT INPUT/OUTPUT
FUNCTION
OE A
L B A port = B port
H Z Disconnect
LOGIC DIAGRAM (POSITIVE LOGIC)
2
Submit Documentation Feedback