The onboard bandgap reference is stable with temperature and scaled for a l.2 V input to the internal power amplifier. The UC385 is available in fixed output voltages of l.5 V, 2.1 V, or 2.5 V. The output voltage of the adjustable version can be set with two external resistors. If the external resistors are omitted, the output voltage defaults t0 1.2 V.
QFN16-0.65 on stock| | | Mtarl | t | CommercIal | |
| Symbol | Parameter | | 53RA1681A | 53RA1681 | 63RA1681A | 63RA1681 | Unlt |
| Typ.t | Mln | Max | Mln | Max | Mln | Max | Mln | Max |
| tW | Width of clock (high or low) | 10 | 20 | | 20 | | 20 | | 20 | | ns |
| 1s(A) | Satup tim~a from address to clock | 28 | 40 | | 45 | | 35 | | 40 | | ns |
| t | Setup time form TS io clock | 20 | 30 | | 35 | | 25 | | 30 | | ns |
| th (A) | Hold time address to clock | -5 | 0 | | O | | 0 | | 0 | | ns |
| t | Hold time d | -5 | 0 | | 0 | | 0 | | 0 | | ns |
| Vcc | Supply voltage | 5 | 4.5 | 5.5 | 4.5 | 5.5 | 4.75 | 5.25 | 4.75 | 5.25 | V |
| ' | Operating temperature b | 25 | -55 | 125 | -55 | 125 | 0 | 75 | O | 75 | oc |
| | | | | | | | | | | |
| A/S | C/B | BRS |
| | -1 | 0 |
| -1 | or0 | 1 |
| or0 | 1 | 0 |
| 1 |
| | -1 | O |
| 1 | or0 | 1 |
| | O |
| 1 | 1 |
| | |
