This CJMCU-401 4-bit non-inverting translator uses
two separate configurable power-supply rails.
The A port is designed to track VCCA. VCCA accepts
any supply voltage from 1.2 V to 3.6 V.
The B port is designed to track VCCB. VCCB accepts
any supply voltage from 1.65 V to 5.5 V.
This allows for universal low-voltage bidirectional
translation between any of the 1.2-V, 1.5-V,
1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. VCCA 
should not exceed VCCB.

1.2 V to 3.6 V on A Port and 1.65 V to 5.5 V on B Port (VCCA ≤ VCCB)
VCC Isolation Feature – If Either VCC Input Is at GND,
All Outputs Are in the High-Impedance State
OE Input Circuit Referenced to VCCA Low Power Consumption, 5-μA Max ICC
Ioff Supports Partial-Power-Down Mode Operation
Latch-Up Performance Exceeds 100 mA Per JESD
78,Class II ESD Protection Exceeds JESD 22
A Port
2500-V Human-Body Model (A114-B)
1500-V Charged-Device Model (C101)
B Port
±15-kV Human-Body Model (A114-B)
1500-V Charged-Device Model (C101)