Texas Instruments 74LVCH series, SN74LVCH244APW, Buffer, Non-Inverting, 3-State output, 1.65V to 3.6V supply, 24mA drive, -40°C to 85°C, 20-TSSOP.
| Parameter | Value |
|---|---|
| Series | 74LVCH |
| Logic type | Buffer, Non-Inverting |
| Output type | 3-State |
| Mounting | Surface Mount |
| Supply voltage | 1.65V ~ 3.6V |
| Current - output high, low | 24mA, 24mA |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tube |
| Case | 20-TSSOP (0.173\", 4.40mm Width) |
| Number of elements | 2 |
| Number of bits per element | 4 |
The industrial temperature grade (-40°C to 85°C) covers most factory-floor, outdoor telecom cabinet, and HVAC controller environments. The 3-state outputs allow multiple buffers to share a common data bus — the outputs go high-impedance when the output-enable pin is inactive, preventing bus contention.
The SN74LVCH244APW is the bus-hold version of the standard LVC244. The bus-hold circuit on each input eliminates the need for external pull-up or pull-down resistors on unused or floating inputs, which can simplify PCB layout and reduce component count in high-density designs.
Yes, it is ROHS3 compliant, meeting the latest EU RoHS directive restrictions.
Yes, the supply voltage range of 1.65V to 3.6V includes 3.3V, so it operates directly on a 3.3V rail and its output levels are compatible with standard 3.3V CMOS and TTL logic inputs.
It can translate between supply voltage domains within its 1.65V to 3.6V range. For example, driving a 3.3V input from a 1.8V output is possible if the 1.8V supply is VCC and the receiving device's VIH is met. It is not a dedicated level shifter with direction control, but it serves in simple unidirectional voltage translation scenarios.