ZHCSK26E March 2017 – July 2022 LMH1297
PRODUCTION DATA
The 4-level input configuration pins use a resistor divider to provide four logic states for each control pin. There is an internal 30-k? pullup and a 60-k? pulldown connected to the control pin that sets the default voltage at 2/3 × VIN. These resistors are combined with the external resistor to achieve the desired voltage level. By using the 1-k? pulldown, 20-k? pulldown, no connect, and 1-k? pullup, the optimal voltage levels for each of the four input states are achieved as shown in Table 8-1.
| LEVEL | SETTING | NOMINAL PIN VOLTAGE |
|---|---|---|
| H | Tie 1 kΩ to VIN | VIN |
| F | Float (leave pin open) | 2/3 × VIN |
| R | Tie 20 kΩ to VSS | 1/3 × VIN |
| L | Tie 1 kΩ to VSS | 0 |
Typical 4-Level Input Thresholds: