The MAX7378 is a silicon oscillator with reset from MAXIM that provides the primary and secondary clock source and reset function for microcontrollers in 3V, 3.3V, and 5V applications. It is resistant to vibration and EMI.
The MAX7378 silicon oscillator provides a high‑speed clock (600 kHz to 10 MHz) and a low‑speed 32.768 kHz clock with a glitch‑free switch and integrated reset output for microcontrollers. It operates from 2.7 V to 5.5 V and is supplied in an 8‑pin UMAX package.
Designed for demanding home‑appliance, industrial and automotive environments, the device features a +10 mA clock‑output drive, low jitter (160 ps at 8 MHz), and a reset output that holds the processor in reset for 100 µs after power‑up. The oscillator is resistant to vibration, EMI and harsh humidity conditions.
| Operating Supply Voltage | 2.7 V to 5.5 V |
|---|---|
| High‑Speed Frequency Range | 600 kHz to 10 MHz |
| Low‑Speed Frequency | 32.768 kHz |
| Clock Output Drive Capability | ±10 mA |
| Temperature Range (standard) | -40 °C to +125 °C |
| Jitter (8 MHz output) | 160 ps peak‑to‑peak |
| Output Rise/Fall Time | 5 ns |
| Reset Output Hold Time | 100 µs |
| Output Duty Cycle | 50 % ± 7 % |
The device operates from 2.7 V up to 5.5 V.
The low‑speed clock is fixed at 32.768 kHz.
The reset output remains active for about 100 µs after power‑up.
The clock output can source or sink up to ±10 mA.