SLVSJY8 November 2025 THVD4431A
PRODUCTION DATA
| NAME | NO. | TYPE | DESCRIPTION |
|---|---|---|---|
| L1 | 1 | O | Logic output (RS-232). Integrated weak pull-up resistor. |
| L2 | 2 | O | Logic output (RS-232/RS-485). Integrated weak pull-up resistor. |
| L3 | 3 | I | Logic input (RS-232/RS-485). Integrated weak pull-up resistor. |
| L4 | 4 | I | Logic input. Integrated weak pull-up resistor |
| L5 | 5 | O | Logic output. Integrated weak pull-up resistor. |
| L6 | 6 | I | Logic input, Integrated weak pull-up resistor |
| L7 | 7 | O | Logic output. Integrated weak pull-up resistor. |
| L8 | 8 | O | Logic output. Integrated weak pull-up resistor. |
| VIO / VCC | 9 | P | 1.65V to 5.5V logic supply voltage. Can also be shorted to VCC if lower logic IO is not needed. |
| NC/GND | 10 | G | Can be left open or Grounded on PCB. |
| SLR | 11 | I | Slew rate control, internal pull-down resistor. SLR=H enables slow speed |
| DIR | 12 | I | RS-485 TX/RX enable/disable. Internal pull-down resistor. |
| MODE2 | 13 | I | MODE control pins, Integrated weak pull-down resistor |
| MODE0 | 14 | I | |
| MODE1 | 15 | I | |
| NC | 16 | NC | Not connected internally. Can be connected to supply or left open on PCB. |
| TERM | 17 | I | Enable/disable 120Ω termination across R1/R2 in RS485-HD mode and across R3/R4 in RS485-FD mode. Internal Pull down resistor |
| NC | 18 | NC | Not connected internally. Can be left open or Grounded on PCB. |
| SHDN | 19 | I | Device enable/disable. Internal pull-down resistor |
| VCC | 20 | P | 3 to 5.5V supply voltage |
| R8 | 21 | I | RS-232 receiver input |
| R7 | 22 | I | RS-232 receiver input |
| GND | 23 | G | Ground |
| R6 | 24 | O | RS-232 driver output |
| R5 | 25 | I | RS-232 receiver input |
| GND | 26 | G | Ground |
| R4 | 27 | I/O | RS-232 driver output or RS-485 inverting receiver input (B) |
| R3 | 28 | I/O | RS-232 driver output or RS-485 non-inverting receiver input (A) |
| GND | 29 | G | Ground |
| R2 | 30 | I/O | RS-232 receiver input or RS-485 bus pin (Y or A) |
| R1 | 31 | I/O | RS-232 receiver input or RS-485 bus pin (Z or B) |
| VCC | 32 | P | 3V to 5.5V supply voltage |
| V- | 33 | Negative charge pump rail | |
| C2- | 34 | Negative terminal of charge pump capacitor | |
| C1- | 35 | Negative terminal of charge pump capacitor | |
| NC | 36 | NC | Not connected internally. Can be left open or Grounded on PCB. |
| C1+ | 37 | Positive terminal of charge pump capacitor | |
| VCC | 38 | P | 3V to 5.5V supply voltage |
| C2+ | 39 | Positive terminal of charge pump capacitor | |
| V+ | 40 | Positive charge pump rail |