74HC125 74HCT125 74LV125 74LVC125

74HC125; 74HCT125
Quad buffer/line driver; 3-state

The 74HC125; 74HCT125 is a quad buffer/line driver with 3-state outputs
controlled by the output enable inputs (nOE).
A HIGH on nOE causes the outputs to assume a high impedance OFF-state.
Inputs include clamp diodes.
This enables the use of current limiting resistors to interface inputs
to voltages in excess of VCC.

The 74HC125: CMOS levels
The 74HCT125: TTL levels

74LV125

Quad buffer/line driver; 3-state

The 74LV125 is a low-voltage Si-gate CMOS device that is pin and
function compatible with 74HC125 and 74HCT125.
The 74LV125 provides four non-inverting buffer/line drivers with 3-state outputs.
The 3-state outputs (nY) are controlled by the output enable input (nOE).
A HIGH at nOE causes the outputs to assume a high-impedance OFF-state.

Wide operating voltage: 1.0 V to 5.5 V
Optimized for low voltage applications: 1.0 V to 3.6 V
Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V

74LVC125A
Quad buffer/line driver with 5 V tolerant input/outputs; 3-state

The 74LVC125A consists of four non-inverting buffers/line drivers
with 3-state outputs (nY) that are controlled by the output enable input (nOE).
A HIGH at nOE causes the outputs to assume a high-impedance OFF-state.
Inputs can be driven from either 3.3 V or 5 V devices.
When disabled, up to 5.5 V can be applied to the outputs.

5 V tolerant inputs/outputs for interfacing with 5 V logic
Wide supply voltage range from 1.2 V to 3.6 V
CMOS low power consumption
Direct interface with TTL levels