Micrel

MICRF009

January 18, 2005

4

M9999-011805

(408) 955-1690

Symbol

Parameter

Condition

Min

Typ

Max

U

Digital/Control Section

Input High Voltage

SEL0, SEL1, SWEN

0.8

Input Low Voltage

SEL0, SEL1, SWEN

0.2

Output Current

DO pin, push-pull

45

µA

Output High Voltage

0.9

Output Low Voltage

0.1

Output Rise and Fall Time

4

µs

Notes:

1. Exceeding absolute maximum ratings may damage the device.

2. The device is not guaranteed to function outside its operating ratings.

3. Devices are ESD sensitive, use appropriate ESD precautions. The device meets Class 1 ESD test requirements, (human body model HBM), in

accordance with MIL-STD-883C, method 3015. Do not operate or store near strong electrostatic fields.

be matched to 50Ω.

parameter value as the ratio:

f

9.794MHz

× parameter value at 9.79MHz

()

6. Spurious reverse isolation represents the spurious components, which appear on the RF input pin (ANT) measured into 50Ω with an input RF

matching network.

7. Series resistance of the resonator (ceramic resonator or crystal) should be minimized to the extent possible. In cases where the resonator series

resistance is too great, the oscillator may oscillate at a diminished peak-to-peak level, or may fail to oscillate entirely. Micrel recommends that

series resistances for ceramic resonators and crystals not exceed 50Ω and 100Ω, respectively.

8. Crystal load capacitor is 10pF. See Figure 5 in “REFOSC” section for reference oscillator operation.

parameter value as the ratio:

9.794MHz

f

× parameter value at 9.794MHz

()