Other Parts Discussed in Thread: TXB0106
My customer is considering TXS0108E between 1.8V LVCMOS and 3.3V LVCMOS.
According to TI Logic Guide, VoH(min) and VoL(max) for 1.8V LVCMOS and 3.3V LVCMOS are as follows.
1.8V LVCMOS 3.3V LVCMOS
VoH(min) 1.2V 2.4V
VoL(max) 0.45V 0.45V
However, according to TXS0108E datasheet, ViH(min) and ViL(max) for VccA=1.8V and VccB=3.3V are as follows.
ViH(min) VccA-0.2V=1.6V VccB-0.4V=2.9V
VlL(max) 0.15V 0.15V
So, VoH(min) is lower than ViH(min) and VoL(max) is higher than ViL(max).
Does this mean TXS0108E can not be used for level translation between 1.8V LVCMOS and 3.3V LVCMOS? If so, what TI bi-directional level shifters are recommended for 1.8V LVCMOS and 3.3V LVCMOS translation? Required port number is five.