TN1.pdf

The 74LVC1T45 is a single bit,dual supply translating transceiverwith 3-state outputs suitable for transmitting a single logic bit across different voltage domains. The A input/output pin is designed to track VCCA while the B input/output tracks VCCB. This arrangement allows for universal low-voltage translation between any voltages from 1.65V to 5.5V. The Direction pin (DIR) controls the direction of the transceiver and in a logic voltage related to VCCA. When a high logic level is applied to DIR the A pin becomes an input and the B pin becomes the output. Conversely the roles of A and B are reversed when DIR is asserted low. The 3-state feature occurs when either of the power supply voltages are zero. This is also an Ioff feature and allows for the output to remain in a high impedance state with both power supplies at 0V preventing and damaging backflow currents and providing power down electrical isolation up to 5.5V as not to interfere with any logic activity on pin A or B.

The 74LVC240A provides two 4-bit buffers/drivers with separate output-enable (OE) inputs. WhenOEis low, the device passes data from the A inputs to the Y outputs. WhenOEis high, the outputs are in the high-impedance state.

The 74LVC244A provides two 4-bit line drivers with separate output-enable (OE) inputs. WhenOEis low, the device passes data from the A inputs to the Y outputs. WhenOEis high, the outputs are in the high-impedance state.

The 74LVC2G00 is a dual two input NAND gate. Both gates have push-pull outputs designed for operation over a power supply range of 1.65V to 5.5V. The device is fully specified for partial power down applications using IOFF. The IOFFcircuitry disables the output preventing damaging current backflow when the device is powered down.

The 74LVC2G02 is dual 2-input positive NOR gate with a standard push-pull output. The device is designed for operation with a power supply range of 1.65V to 5.5V. The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using IOFF. The IOFFcircuitry disables the output preventing damaging current backflow when the device is powered down.

The 74LVC2G04 is a dual inverter gate with standard pushpull outputs. The device is designed for operation with a power supply range of 1.65V to 5.5V. The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using IOFF. The IOFFcircuitry disables the output preventing damaging current backflow when the device is powered down. The gate performs the positive Boolean function: Y = A

The 74LVC2G06 is a dual inverter gate with open drain outputs. The device is designed for operation with a power supply range of 1.65V to 5.5V. The input is tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using IOFF. The IOFFcircuitry disables the output preventing damaging current backflow when the device is powered down. The open-drain output can be connected to other open drain outputs to implement activelow wired-OR or active-high wired-AND functions. The maximum sink current is 32 mA.

The 74LVC2G08 is a dual 2-input positive AND gate with a standard push-pull output. The device is designed for operation with a power supply range of 1.65V to 5.5V. The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using IOFF. The IOFFcircuitry disables the output preventing damaging current backflow when the device is powered down.

The 74LVC2G125 is a dual bus buffer gate with 3-state outputs. The device is designed for operation with a power supply range of 1.65V to 5.5V. The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using IOFF. The IOFFcircuitry disables the output preventing damaging current backflow when the device is powered down.