4 Channel breakout board for 2N7001T Single-Bit Dual-Supply Buffered Voltage Signal Converter. The 2N7001T is a single-bit buffered voltage signal converter that uses two separate configurable powersupply rails to up or down translate a unidirectional signal. The device is operational with both VCCA and VCCB supplies down to 1.65 V and up to 3.60 V. VCCA defines the input threshold voltage on the A input. VCCB defines the output drive voltage on the B output. This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry ensures that no excessive current is drawn from or to an input, output, or combined I/O that is biased to a specific voltage while the device is powered down. The VCC isolation feature ensures that if either VCCA or VCCB is less than 100 mV, the output port (B) enters a high-impedance state.https://www.ti.com/store/ti/en/p/product/?p=2N7001TDCKR